技术领域technical field
本发明涉及可再生低碳燃料内燃机技术领域，尤其涉及一种射流点火式甲醇发动机燃烧系统。The invention relates to the technical field of renewable low-carbon fuel internal combustion engines, in particular to a jet ignition type methanol engine combustion system.
背景技术Background technique
甲醇以其辛烷值高、氧含量高等优点，成为一种优质的发动机替代燃料，具有良好的发展前景。但是，甲醇发动机的发展，也面临一些问题。例如，由于甲醇汽化潜热大，在低温下的饱和蒸气压低，导致在低温环境下甲醇很难在缸内蒸发并形成浓度适宜点燃的混合气，从而导致甲醇发动机低温冷启动的困难。很多甲醇发动机产品采用易于低温冷启动的燃料来进行冷启动，这就要增加一个副油箱，从而增加了发动机的制造和维护成本。With its high octane number and high oxygen content, methanol has become a high-quality alternative fuel for engines and has a good development prospect. However, the development of methanol engines also faces some problems. For example, due to the large latent heat of vaporization of methanol and the low saturated vapor pressure at low temperatures, it is difficult for methanol to evaporate in the cylinder and form a mixture with a concentration suitable for ignition in a low temperature environment, which leads to difficulties in cold start of methanol engines at low temperatures. Many methanol engine products use fuel that is easy to cold start at low temperature for cold start, which requires adding an auxiliary fuel tank, thereby increasing the manufacturing and maintenance costs of the engine.
此外，多数甲醇单一燃料发动机都是采用类似汽油机的燃烧模式，以奥托循环运行，在进气道或缸内喷射甲醇燃料，形成均质混合气，再由火花塞点火，燃烧速率受控于火焰扩散速率。这种燃烧模式在低负荷下存在节气损失较高的问题，使其热效率较低，而在高负荷下存在易爆震的问题，使发动机难以达到很高的功率密度。In addition, most methanol single-fuel engines adopt a combustion mode similar to that of gasoline engines. They operate on the Otto cycle. Methanol fuel is injected into the intake port or in the cylinder to form a homogeneous mixture, which is then ignited by the spark plug. The combustion rate is controlled by the flame. Diffusion rate. This combustion mode has the problem of high throttling loss at low load, which makes its thermal efficiency low, and has the problem of easy knocking at high load, making it difficult for the engine to achieve high power density.
发明内容Contents of the invention
本发明的目的是提供一种射流点火式甲醇发动机燃烧系统，来取代柴油-甲醇双直喷燃烧系统，实现甲醇单一燃料的喷雾扩散燃烧方式，确保甲醇发动机的低温冷启动，提高发动机热效率和功率密度，并降低发动机的成本。The purpose of the present invention is to provide a jet ignition type methanol engine combustion system to replace the diesel-methanol double direct injection combustion system, realize the spray diffusion combustion mode of methanol single fuel, ensure the low temperature cold start of the methanol engine, and improve the thermal efficiency and power of the engine density, and reduce the cost of the engine.
为实现上述目的，本发明提供了一种射流点火式甲醇发动机燃烧系统，包括：To achieve the above object, the present invention provides a jet ignition type methanol engine combustion system, comprising:
第一甲醇喷射装置，所述第一甲醇喷射装置安装在发动机的缸盖上，所述第一甲醇喷射装置用于向所述发动机的气缸内喷射甲醇，形成高压甲醇喷雾束；The first methanol injection device, the first methanol injection device is installed on the cylinder head of the engine, and the first methanol injection device is used to inject methanol into the cylinder of the engine to form a high-pressure methanol spray beam;
点火室，所述点火室设置于所述缸盖上，所述点火室内安装有点火装置、电热塞和第二甲醇喷射装置，所述第二甲醇喷射装置用于向点火室内喷射甲醇，所述点火装置用于点燃所述点火室内的甲醇混合气，所述电热塞用于在冷启动工况时预热所述点火室的壁面及所述点火室内的空气；所述点火室的底部开设有若干个点火室通道，所述点火室通过所述点火室通道与所述气缸的主燃烧室连通。an ignition chamber, the ignition chamber is arranged on the cylinder head, an ignition device, a glow plug and a second methanol injection device are installed in the ignition chamber, the second methanol injection device is used to inject methanol into the ignition chamber, the The ignition device is used to ignite the methanol mixture in the ignition chamber, and the glow plug is used to preheat the wall surface of the ignition chamber and the air in the ignition chamber during cold start; the bottom of the ignition chamber is provided with Several ignition chamber passages, through which the ignition chamber communicates with the main combustion chamber of the cylinder.
点火室内的甲醇混合气着火燃烧之后，高温燃烧火焰经过点火室通道进入主燃烧室，形成若干束火焰射流，其中至少一束火焰射流与一束高压甲醇喷雾束在空间交汇，高温的火焰射流点燃甲醇喷雾，从而实现高压直喷甲醇的高能射流点火、扩散燃烧模式。After the methanol mixture in the ignition chamber is ignited and burned, the high-temperature combustion flame enters the main combustion chamber through the passage of the ignition chamber, forming several flame jets, at least one of which intersects with a high-pressure methanol spray beam in space, and the high-temperature flame jet ignites Methanol spray, so as to realize the high-energy jet ignition and diffusion combustion mode of high-pressure direct methanol injection.
优选的，所述点火室包括壳体和扣合在所述壳体顶部的壳体盖，所述壳体固定安装在所述缸盖上，所述点火装置、所述电热塞、所述第二甲醇喷射装置均固定安装在所述壳体盖和/或所述壳体上，所述点火室通道开设在所述壳体的底部。Preferably, the ignition chamber includes a housing and a housing cover fastened on the top of the housing, the housing is fixedly mounted on the cylinder head, the ignition device, the glow plug, the second The dimethanol injection devices are all fixedly installed on the housing cover and/or the housing, and the ignition chamber channel is opened at the bottom of the housing.
优选的，所述点火室的内壁上涂覆有隔热陶瓷。Preferably, the inner wall of the ignition chamber is coated with heat-insulating ceramics.
优选的，所述点火装置采用火花塞或等离子体点火器或激光点火器。Preferably, the ignition device adopts a spark plug or a plasma igniter or a laser igniter.
优选的，所述第一甲醇喷射装置采用电控多孔喷射器，喷射压力大于50MPa；所述第二甲醇喷射装置采用电控旋流喷射器，喷射压力为15MPa～30MPa。Preferably, the first methanol injection device adopts an electronically controlled multi-hole injector, and the injection pressure is greater than 50 MPa; the second methanol injection device adopts an electronically controlled swirl injector, and the injection pressure is 15 MPa-30 MPa.
优选的，所述第二甲醇喷射装置的喷射定时为40°CA BTDC～10°CA BTDC；所述点火装置的点火定时比所述第二甲醇喷射装置的喷射定时晚5°CA～30°CA。Preferably, the injection timing of the second methanol injection device is 40°CA BTDC to 10°CA BTDC; the ignition timing of the ignition device is 5°CA to 30°CA later than the injection timing of the second methanol injection device .
优选的，所述第一甲醇喷射装置的喷射策略采用单次喷射或多次喷射，其中至少一次的喷射定时比所述点火装置的点火定时晚-10°CA～10°CA，使所述第一甲醇喷射装置产生的高压甲醇喷雾束与所述点火室产生的火焰射流能够在相同的续存时间内在所述主燃烧室内发生空间交汇。Preferably, the injection strategy of the first methanol injection device adopts single injection or multiple injections, wherein at least one injection timing is -10°CA~10°CA later than the ignition timing of the ignition device, so that the first methanol injection The high-pressure methanol spray beam generated by a methanol injection device and the flame jet generated by the ignition chamber can intersect in the main combustion chamber within the same duration.
优选的，该燃烧系统应用于四冲程发动机或缸径不大于300mm的二冲程发动机时，每个所述气缸设置1个所述点火室；该燃烧系统应用于缸径大于300mm的二冲程发动机时，每个所述气缸设置2～3个所述点火室。Preferably, when the combustion system is applied to a four-stroke engine or a two-stroke engine with a bore no greater than 300mm, one ignition chamber is provided for each cylinder; when the combustion system is applied to a two-stroke engine with a bore greater than 300mm, each Two to three ignition chambers are provided for each cylinder.
优选的，所述点火室的总容积占所述气缸压缩容积的比例为1.0％～6.0％，任一所述点火室上所述点火室通道的数量为1～12个。Preferably, the ratio of the total volume of the ignition chamber to the compressed volume of the cylinder is 1.0%-6.0%, and the number of the ignition chamber channels on any one of the ignition chambers is 1-12.
优选的，所述点火室内供给甲醇燃料的比例为总燃料的1％～6％，所述主燃烧室内供给甲醇燃料的比例为总燃料的94％～99％。Preferably, the proportion of methanol fuel supplied in the ignition chamber is 1%-6% of the total fuel, and the proportion of methanol fuel supplied in the main combustion chamber is 94%-99% of the total fuel.
一种射流点火式甲醇发动机燃烧系统的工作方式，包括以下几种：A working method of a jet ignition type methanol engine combustion system, including the following:
方式F1：在冷启动工况，首先采用电热塞预热点火室内的空气和隔热陶瓷，既提高了点火室内的压缩初始温度，又降低了点火室内的壁面散热损失，使点火室内的空气可以保持较高的温度，甲醇的饱和蒸气压也相应大幅提高，因而，由第二甲醇喷射器喷射的甲醇喷雾可以在点火室内快速蒸发并形成适宜点燃的当量比混合气，由点火装置点燃之后，迅速燃烧，并喷入主燃烧室形成温度高达2000℃以上的湍流火焰射流，能可靠地点燃主燃烧室内的甲醇喷雾，并在缸内形成稳定的喷雾燃烧，确保冷启动成功。Mode F1: In the cold start condition, first use the electric glow plug to preheat the air in the ignition chamber and heat insulation ceramics, which not only increases the initial compression temperature in the ignition chamber, but also reduces the heat dissipation loss of the wall surface in the ignition chamber, so that the air in the ignition chamber can be Keeping a higher temperature, the saturated vapor pressure of methanol is correspondingly greatly increased. Therefore, the methanol spray sprayed by the second methanol injector can quickly evaporate in the ignition chamber and form a mixture gas with an equivalence ratio suitable for ignition. After being ignited by the ignition device, It burns rapidly and sprays into the main combustion chamber to form a turbulent flame jet with a temperature above 2000°C, which can reliably ignite the methanol spray in the main combustion chamber and form a stable spray combustion in the cylinder to ensure a successful cold start.
方式F2：在发动机启动成功之后的工况，切断预热塞电源，压缩温度可以满足点火室内甲醇的蒸发；在发动机压缩冲程，由第二甲醇喷射器向点火室内喷射适量的甲醇，使点火室内在压缩冲程末期形成适宜点燃的甲醇预混合气，由点火装置点燃，燃烧产物和火焰形成湍流火焰射流经点火室通道喷入主燃烧室，点燃主燃烧室内由第一甲醇喷射装置喷射的高压甲醇喷雾束，使缸内的甲醇以喷雾扩散的模式进行燃烧；此时缸内喷雾燃烧过程类似柴油机，不存在末端混合气自燃的情况，因此不会产生爆震，其燃烧速率受控于喷雾混合速率，可以达到近似于柴油机的功率密度。Mode F2: In the working condition after the engine starts successfully, cut off the power supply of the glow plug, and the compression temperature can satisfy the evaporation of methanol in the ignition chamber; during the compression stroke of the engine, inject an appropriate amount of methanol into the ignition chamber from the second methanol injector to make the ignition chamber At the end of the compression stroke, methanol premixed gas suitable for ignition is formed, which is ignited by the ignition device, and the combustion products and flame form a turbulent flame jet, which is injected into the main combustion chamber through the passage of the ignition chamber, and ignites the high-pressure methanol injected by the first methanol injection device in the main combustion chamber. The spray beam makes the methanol in the cylinder burn in the mode of spray diffusion; at this time, the spray combustion process in the cylinder is similar to that of a diesel engine, and there is no spontaneous combustion of the end mixture, so there is no knocking, and its combustion rate is controlled by the spray mixing The speed can reach a power density similar to that of a diesel engine.
与现有技术相比，本发明具有如下优点和技术效果：Compared with the prior art, the present invention has the following advantages and technical effects:
1、本发明在缸盖上设置至少一个点火室，产生若干条高温湍流火焰射流，作为主燃烧室内高压直喷甲醇的高能点火源，实现多点分散高能点火，点火可靠性好，发动机效率高。1. In the present invention, at least one ignition chamber is arranged on the cylinder head to generate several high-temperature turbulent flame jets, which are used as a high-energy ignition source for high-pressure direct injection of methanol in the main combustion chamber to realize multi-point dispersed high-energy ignition, good ignition reliability, and high engine efficiency .
2、本发明适用于大缸径(缸径大于150mm)发动机，包括二冲程和四冲程的内燃发动机，点火室系统可以替代柴油-甲醇双直喷发动机中的柴油微喷引燃系统，大幅降低发动机的成本。2. The present invention is applicable to large bore (bore greater than 150mm) engines, including two-stroke and four-stroke internal combustion engines, and the ignition chamber system can replace the diesel micro-injection ignition system in the diesel-methanol double direct injection engine, greatly reducing the fuel consumption of the engine. cost.
3、采用本发明所提供的燃烧系统，发动机在-30℃的环境温度下12秒之内冷启动成功，与采用甲醇进气道喷射、火花塞点火的燃烧模式相比，热效率提高3.5％，功率密度提高40％；与采用柴油-甲醇双直喷的燃烧模式相比，发动机成本降低11％，热效率增加2.3％，尾气中颗粒物质量降低99％。3. With the combustion system provided by the present invention, the engine can be successfully cold-started within 12 seconds at an ambient temperature of -30°C. Compared with the combustion mode using methanol intake port injection and spark plug ignition, the thermal efficiency is increased by 3.5%, and the power The density is increased by 40%; compared with the combustion mode using diesel-methanol dual direct injection, the engine cost is reduced by 11%, the thermal efficiency is increased by 2.3%, and the particulate matter in the exhaust gas is reduced by 99%.
4、本发明采用点火室的高温火焰射流点燃主燃烧内的甲醇喷雾，使缸内发生类似柴油机的喷雾扩散燃烧，取消了节气门，避免发生节气损失，由于没有末端混合气，也可以避免发生爆震，因而可以达到近似柴油机的功率密度。4. The present invention uses the high-temperature flame jet in the ignition chamber to ignite the methanol spray in the main combustion, so that the spray diffusion combustion similar to that of a diesel engine occurs in the cylinder, and the throttle valve is canceled to avoid the loss of throttle. Since there is no end-mixed gas, it can also avoid the occurrence of detonation, and thus can achieve a power density similar to that of a diesel engine.
5、本发明提供的一种射流点火式甲醇发动机燃烧系统，在点火室内壁涂覆了隔热陶瓷，并设置了电热塞，在冷启动工况，采用电热塞对点火室内的空气和壁面进行预热，既提高了压缩开始的温度，又降低了壁面传热损失，使点火室内的压缩温度升高，使甲醇的饱和蒸气压也相应提高，有利于提高点火室内甲醇喷雾的蒸发速率，从而可以形成浓度适宜点燃的甲醇混合气，确保点火室内的可靠点火和稳定燃烧，进而形成高温湍流火焰射流，点燃主燃烧室内的甲醇喷雾，从而确保冷启动成功。5. In the combustion system of a jet ignition type methanol engine provided by the present invention, heat-insulating ceramics are coated on the wall of the ignition chamber, and a glow plug is installed. In the cold start condition, the glow plug is used to control the air and the wall in the ignition chamber. Preheating not only increases the temperature at the beginning of compression, but also reduces the heat transfer loss of the wall surface, increases the compression temperature in the ignition chamber, and increases the saturated vapor pressure of methanol accordingly, which is beneficial to increase the evaporation rate of methanol spray in the ignition chamber, thereby It can form a methanol mixture with a concentration suitable for ignition to ensure reliable ignition and stable combustion in the ignition chamber, and then form a high-temperature turbulent flame jet to ignite the methanol spray in the main combustion chamber, thereby ensuring a successful cold start.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.
图1为实施本发明射流点火式甲醇发动机燃烧系统的高压直喷式四冲程发动机的结构示意图；Fig. 1 is the structural representation of the high-pressure direct-injection four-stroke engine that implements jet ignition type methanol engine combustion system of the present invention;
图2为使用本发明提供的射流点火式甲醇发动机燃烧系统的工作流程图；Fig. 2 is the working flow diagram of using the jet ignition type methanol engine combustion system provided by the present invention;
图3为实施本发明射流点火式甲醇发动机燃烧系统的高压直喷式二冲程发动机的结构示意图；Fig. 3 is the structural representation of the high-pressure direct-injection two-stroke engine that implements jet ignition type methanol engine combustion system of the present invention;
图4为图3中高压直喷式二冲程发动机的火焰射流和甲醇射流的横向结构示意图；Fig. 4 is a schematic diagram of the transverse structure of the flame jet and the methanol jet of the high-pressure direct-injection two-stroke engine in Fig. 3;
其中：1、气缸；2、活塞；3、缸盖；4、主燃烧室；5、壳体；51、壳体盖；52、隔热陶瓷；53、电热塞；6、点火室；7、点火室通道；8、第二甲醇喷射装置；9、点火装置；10、第一甲醇喷射装置；C1、C2、C3湍流火焰射流；S1、S2、S3高压甲醇喷雾束。Among them: 1. Cylinder; 2. Piston; 3. Cylinder head; 4. Main combustion chamber; 5. Shell; 51. Shell cover; 52. Heat insulating ceramic; 53. Glow plug; Ignition chamber channel; 8. Second methanol injection device; 9. Ignition device; 10. First methanol injection device; C1, C2, C3 turbulent flame jet; S1, S2, S3 high-pressure methanol spray beam.
具体实施方式Detailed ways
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。下面将参考附图并结合实施例来详细说明本发明。It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. The present invention will be described in detail below with reference to the accompanying drawings and examples.
本发明提供一种射流点火式甲醇发动机燃烧系统，包括：The invention provides a jet ignition type methanol engine combustion system, comprising:
第一甲醇喷射装置10，第一甲醇喷射装置10安装在发动机的缸盖3上，第一甲醇喷射装置10用于向发动机的气缸1内喷射甲醇，形成高压甲醇喷雾束S1、S2等；The first methanol injection device 10, the first methanol injection device 10 is installed on the cylinder head 3 of the engine, the first methanol injection device 10 is used to inject methanol into the cylinder 1 of the engine to form high-pressure methanol spray beams S1, S2, etc.;
点火室6，点火室6设置于缸盖3上，点火室6内安装有点火装置9、电热塞53和第二甲醇喷射装置8，第二甲醇喷射装置8用于向点火室6内喷射甲醇，点火装置9用于点燃点火室6内的甲醇混合气，电热塞53用于在冷启动工况时预热点火室6的壁面及点火室6内的空气；点火室6的底部开设有若干个点火室通道7，点火室6通过点火室通道7与气缸1的主燃烧室4连通。Ignition chamber 6, the ignition chamber 6 is arranged on the cylinder head 3, an ignition device 9, a glow plug 53 and a second methanol injection device 8 are installed in the ignition chamber 6, and the second methanol injection device 8 is used to inject methanol into the ignition chamber 6 , the ignition device 9 is used to ignite the methanol mixture in the ignition chamber 6, and the glow plug 53 is used to preheat the wall of the ignition chamber 6 and the air in the ignition chamber 6 during cold start conditions; the bottom of the ignition chamber 6 is provided with several An ignition chamber passage 7, through which the ignition chamber 6 communicates with the main combustion chamber 4 of the cylinder 1.
本发明点火室6内的甲醇混合气着火之后，点火室6内压力和温度升高，促使点火室6内的甲醇燃烧火焰从点火室通道7喷入主燃烧室4，形成湍流火焰射流，点燃主燃烧室4内的甲醇喷雾或甲醇混合气。After the methanol mixture in the ignition chamber 6 of the present invention is ignited, the pressure and temperature in the ignition chamber 6 increase, which impels the methanol combustion flame in the ignition chamber 6 to spray into the main combustion chamber 4 from the ignition chamber passage 7, forming a turbulent flame jet, and igniting Methanol spray or methanol mixture in the main combustion chamber 4.
进一步的，点火室6包括壳体5和扣合在壳体5顶部的壳体盖51，壳体5固定安装在缸盖3上，点火装置9、电热塞53、第二甲醇喷射装置8均固定安装在壳体盖51和/或壳体5上，点火室通道7开设在壳体5的底部。Further, the ignition chamber 6 includes a housing 5 and a housing cover 51 fastened on the top of the housing 5, the housing 5 is fixedly installed on the cylinder head 3, the ignition device 9, the glow plug 53, and the second methanol injection device 8 are all It is fixedly mounted on the housing cover 51 and/or the housing 5 , and the ignition chamber channel 7 is opened at the bottom of the housing 5 .
进一步的，点火室6的内壁上涂覆有隔热陶瓷52。Further, the inner wall of the ignition chamber 6 is coated with heat-insulating ceramics 52 .
进一步的，点火装置9采用火花塞或等离子体点火器或激光点火器。Further, the ignition device 9 adopts a spark plug or a plasma igniter or a laser igniter.
进一步的，第一甲醇喷射装置10采用电控多孔喷射器，喷射压力大于50MPa，使缸内甲醇燃料具有足够的贯穿距和喷射速率，改善缸内混合过程；第二甲醇喷射装置8采用电控旋流喷射器，喷射压力为15MPa～30MPa，使点火室6内的甲醇喷雾具有粒子分布均匀、贯穿距较短的特点，避免燃料撞壁，有利于在点火室6内形成均质混合气。Further, the first methanol injection device 10 adopts an electronically controlled multi-hole injector, and the injection pressure is greater than 50 MPa, so that the methanol fuel in the cylinder has sufficient penetration distance and injection rate, and improves the mixing process in the cylinder; the second methanol injection device 8 adopts an electronically controlled The swirl injector has an injection pressure of 15MPa-30MPa, so that the methanol spray in the ignition chamber 6 has the characteristics of uniform particle distribution and short penetration distance, avoiding fuel collision with the wall, and is conducive to forming a homogeneous gas mixture in the ignition chamber 6.
进一步的，第二甲醇喷射装置8的喷射定时为40°CA BTDC～10°CA BTDC；点火装置9的点火定时比第二甲醇喷射装置8的喷射定时晚5°CA～30°CA。Further, the injection timing of the second methanol injection device 8 is 40°CA BTDC-10°CA BTDC; the ignition timing of the ignition device 9 is 5°CA-30°CA later than the injection timing of the second methanol injection device 8 .
进一步的，第一甲醇喷射装置10的喷射策略采用单次喷射或多次喷射，其中至少一次的喷射定时比点火装置9的点火定时晚-10°CA～10°CA，使第一甲醇喷射装置10产生的高压甲醇喷雾束与点火室6产生的火焰射流能够在相同的续存时间内在主燃烧室4内发生空间交汇，以确保湍流火焰射流可以点燃甲醇喷雾。Further, the injection strategy of the first methanol injection device 10 adopts a single injection or multiple injections, wherein at least one injection timing is -10°CA ~ 10°CA later than the ignition timing of the ignition device 9, so that the first methanol injection device The high-pressure methanol spray beam produced by 10 and the flame jet produced by the ignition chamber 6 can intersect in the main combustion chamber 4 within the same duration to ensure that the turbulent flame jet can ignite the methanol spray.
进一步的，该燃烧系统应用于四冲程发动机或缸径不大于300mm的二冲程发动机时，每个气缸1设置1个点火室6；该燃烧系统应用于缸径大于300mm的二冲程发动机时，每个气缸1设置2～3个点火室6。Further, when the combustion system is applied to a four-stroke engine or a two-stroke engine with a bore no greater than 300mm, each cylinder 1 is provided with an ignition chamber 6; when the combustion system is applied to a two-stroke engine with a bore greater than 300mm, each cylinder 1. Set 2 to 3 ignition chambers 6.
进一步的，点火室6的总容积占气缸1压缩容积的比例为1.0％～6.0％，任一点火室6上点火室通道7的数量为1～12个。Further, the ratio of the total volume of the ignition chamber 6 to the compressed volume of the cylinder 1 is 1.0%-6.0%, and the number of ignition chamber passages 7 on any ignition chamber 6 is 1-12.
进一步的，点火室6内供给甲醇燃料的比例为总燃料的1％～6％，主燃烧室4内供给甲醇燃料的比例为总燃料的94％～99％。Further, the proportion of methanol fuel supplied in the ignition chamber 6 is 1%-6% of the total fuel, and the proportion of methanol fuel supplied in the main combustion chamber 4 is 94%-99% of the total fuel.
图1为四冲程发动机采用本发明的燃烧系统，每个气缸1配备1个点火室6。对于大缸径的低速二冲程发动机，为了缩短火焰传播距离，加速缸内燃烧，可以为每个气缸1配备2～3个点火室6。Fig. 1 is a four-stroke engine adopting the combustion system of the present invention, and each cylinder 1 is equipped with an ignition chamber 6 . For a low-speed two-stroke engine with a large cylinder diameter, in order to shorten the flame propagation distance and accelerate combustion in the cylinder, each cylinder 1 can be equipped with 2 to 3 ignition chambers 6 .
本发明提供的射流点火式甲醇发动机燃烧系统，燃烧模式以迪赛尔循环工作时，在甲醇发动机中的具体工作方式为：The jet ignition type methanol engine combustion system provided by the present invention, when the combustion mode works in Diesel cycle, the specific working mode in the methanol engine is as follows:
方式F1：在冷启动工况，采用点火室6火焰射流点火、缸内喷雾扩散燃烧模式。首先采用电热塞53预热点火室6内的空气和隔热陶瓷52，既提高了点火室6内的压缩初始温度，又降低了点火室6内的壁面散热损失，使点火室6内的空气可以保持较高的温度，甲醇的饱和蒸气压也相应大幅提高，因而，由第二甲醇喷射装置8喷射的甲醇喷雾可以在点火室6内快速蒸发并形成适宜点燃的当量比混合气，由点火装置9点燃之后，迅速燃烧，并喷入主燃烧室4形成温度高达2000℃以上的湍流火焰射流C1、C2等，能可靠地点燃主燃烧室4内的高压甲醇喷雾束S1、S2等，并在气缸1内形成稳定的喷雾扩散燃烧，确保发动机平稳运转，持续暖机，直至发动机冷启动成功。Mode F1: In the cold start condition, the flame jet ignition in the ignition chamber 6 and the spray diffusion combustion mode in the cylinder are adopted. First, the glow plug 53 is used to preheat the air in the ignition chamber 6 and the heat-insulating ceramics 52, which not only improves the initial compression temperature in the ignition chamber 6, but also reduces the heat dissipation loss of the wall surface in the ignition chamber 6, so that the air in the ignition chamber 6 Higher temperature can be maintained, and the saturated vapor pressure of methanol is correspondingly greatly increased. Therefore, the methanol spray sprayed by the second methanol injection device 8 can quickly evaporate in the ignition chamber 6 and form an equivalence ratio mixture suitable for ignition. After the device 9 is ignited, it burns rapidly and sprays into the main combustion chamber 4 to form turbulent flame jets C1, C2, etc. with a temperature as high as 2000° C., which can reliably ignite the high-pressure methanol spray beams S1, S2, etc. in the main combustion chamber 4, and Stable spray diffusion combustion is formed in cylinder 1 to ensure smooth running of the engine and continuous warm-up until the engine is successfully cold-started.
方式F2：在发动机启动成功之后的工况，切断电热塞53的电源，压缩温度可以满足点火室6内甲醇的蒸发。在发动机压缩冲程，由第二甲醇喷射装置8向点火室6内喷射适量的甲醇，使点火室6内在压缩冲程末期形成适宜点燃的甲醇预混合气，由点火装置点燃，燃烧产物和火焰形成湍流火焰射流C1、C2等经点火室通道7喷入主燃烧室4，点燃主燃烧室4内由第一甲醇喷射装置10喷射的高压甲醇喷雾束S1、S2等，使气缸1内的甲醇以喷雾扩散的模式进行燃烧。此时，气缸1内的喷雾燃烧过程类似柴油机，不存在末端混合气自燃的情况，因此不会产生爆震，其燃烧速率受控于喷雾混合速率，可以达到近似于柴油机的功率密度。Mode F2: In the working condition after the engine is successfully started, the power supply of the glow plug 53 is cut off, and the compression temperature can satisfy the evaporation of methanol in the ignition chamber 6 . During the compression stroke of the engine, an appropriate amount of methanol is injected into the ignition chamber 6 by the second methanol injection device 8, so that a methanol premixed gas suitable for ignition is formed in the ignition chamber 6 at the end of the compression stroke, which is ignited by the ignition device, and the combustion products and the flame form turbulence The flame jets C1, C2, etc. are sprayed into the main combustion chamber 4 through the ignition chamber passage 7, and ignite the high-pressure methanol spray beams S1, S2, etc. injected by the first methanol injection device 10 in the main combustion chamber 4, so that the methanol in the cylinder 1 is sprayed Diffusion mode for combustion. At this time, the spray combustion process in cylinder 1 is similar to that of a diesel engine, and there is no spontaneous combustion of the end-air mixture, so knocking will not occur. The combustion rate is controlled by the spray mixing rate, which can achieve a power density similar to that of a diesel engine.
图2为使用本发明提供的射流点火式甲醇发动机燃烧系统的发动机，具体工作流程包括如下步骤：Fig. 2 is the engine using the jet ignition type methanol engine combustion system provided by the present invention, and the specific work flow includes the following steps:
步骤S1：在进气行程和/或压缩行程早期，通过安装在点火室6壳体盖51上的第二甲醇喷射装置8，向点火室6供给甲醇，采用合适的燃料供给控制策略，使压缩行程后期点火室6内形成适宜点燃的当量比混合气；Step S1: In the early stage of the intake stroke and/or the compression stroke, supply methanol to the ignition chamber 6 through the second methanol injection device 8 installed on the casing cover 51 of the ignition chamber 6, and adopt a suitable fuel supply control strategy to make the compression An equivalence ratio mixture suitable for ignition is formed in the ignition chamber 6 at the later stage of the stroke;
步骤S2；在压缩行程后期，由点火装置9点燃点火室6内的适宜点燃的甲醇混合气，点火室6内的混合气着火燃烧之后，点火室6内的压力急剧上升，驱使点火室6内的未燃混合气和高温燃烧产物，经若干个点火室通道7以很高的速度流入主燃烧室4，形成多条湍流火焰射流；Step S2: In the latter part of the compression stroke, the methanol mixture suitable for ignition in the ignition chamber 6 is ignited by the ignition device 9. After the mixture in the ignition chamber 6 is ignited and burned, the pressure in the ignition chamber 6 rises sharply, driving the ignition chamber 6 to The unburned mixture and high-temperature combustion products flow into the main combustion chamber 4 at a high speed through several ignition chamber channels 7, forming multiple turbulent flame jets;
步骤S3：在压缩行程后期，由安装在缸盖3上的第一甲醇喷射装置10向主燃烧室4进行高压甲醇喷射，且第一甲醇喷射装置10的喷孔夹角与安装方位的设置与点火室通道7的方向设置相互匹配，使得来自点火室6的湍流火焰射流分别与从第一甲醇喷射装置10喷孔出来的高压甲醇喷雾束在主燃烧室4内交汇，各自点燃相应的高压甲醇喷雾束，在主燃烧室4内形成若干个分散的着火与燃烧区；Step S3: In the later stage of the compression stroke, the first methanol injection device 10 installed on the cylinder head 3 is used to inject high-pressure methanol into the main combustion chamber 4, and the angle and installation orientation of the first methanol injection device 10 are set in accordance with the The directions of the ignition chamber channels 7 are set to match each other, so that the turbulent flame jets from the ignition chamber 6 and the high-pressure methanol spray beams coming out of the nozzle holes of the first methanol injection device 10 meet in the main combustion chamber 4, and respectively ignite the corresponding high-pressure methanol The spray beam forms several scattered ignition and combustion zones in the main combustion chamber 4;
步骤S4：在压缩行程末期及膨胀行程早期，随着第一甲醇喷射装置10继续向主燃烧室4喷射甲醇，主燃烧室4内的燃烧火焰随着甲醇-空气可燃混合气的形成而扩散，发生类似于传统柴油机缸内的受控于混合过程的燃烧，使发动机以迪赛尔循环工作。Step S4: At the end of the compression stroke and the early stage of the expansion stroke, as the first methanol injection device 10 continues to inject methanol to the main combustion chamber 4, the combustion flame in the main combustion chamber 4 spreads with the formation of methanol-air combustible mixture, Combustion takes place in a controlled mixing process similar to that in a conventional diesel engine, allowing the engine to operate on the Diesel cycle.
图3为一台二冲程的高压直喷式发动机采用本发明燃烧系统的结构示意图。其中，每个气缸1配备了2个点火室6和2个第一甲醇喷射装置10，点火室通道7和第一甲醇喷射装置10的喷孔顺着气缸1内涡流旋转的方向布置，并且使得点火室6的湍流火焰射流C1、C2、C3和高压甲醇喷雾束S1、S2、S3分别在主燃烧室4内交汇，以确保甲醇喷雾可靠着火。Fig. 3 is a structural schematic diagram of a two-stroke high-pressure direct-injection engine adopting the combustion system of the present invention. Wherein, each cylinder 1 is equipped with 2 ignition chambers 6 and 2 first methanol injection devices 10, and the injection holes of the ignition chamber channels 7 and the first methanol injection devices 10 are arranged along the direction of the vortex rotation in the cylinder 1, and make The turbulent flame jets C1, C2, C3 of the ignition chamber 6 and the high-pressure methanol spray beams S1, S2, S3 respectively meet in the main combustion chamber 4 to ensure reliable ignition of the methanol spray.
图4为实施本发明燃烧系统的二冲程甲醇发动机的火焰射流和甲醇喷雾的横向结构示意图，来自点火室6的湍流火焰射流C1、C2、C3和从第一甲醇喷射装置10喷出的高压甲醇喷雾束S1、S2、S3在圆周方向上都顺着主燃烧室4内涡流的旋转方向，且湍流火焰射流C1、C2、C3和高压甲醇喷雾束S1、S2、S3分别在主燃烧室4内交汇，点燃相应的甲醇喷束。Fig. 4 is the lateral structural representation of the flame jet and methanol spray of the two-stroke methanol engine that implements the combustion system of the present invention, the turbulent flame jet C1, C2, C3 from ignition chamber 6 and the high-pressure methanol sprayed from the first methanol injection device 10 The spray beams S1, S2, S3 are all along the rotation direction of the vortex in the main combustion chamber 4 in the circumferential direction, and the turbulent flame jets C1, C2, C3 and the high-pressure methanol spray beams S1, S2, S3 are in the main combustion chamber 4 respectively. To merge, ignite the corresponding methanol jet.
采用本发明射流点火式甲醇发动机燃烧系统的发动机，在主燃烧室4内甲醇高压喷射采用单次喷射策略时，点火室6的燃料供给在进气行程完成，点火装置9的点火时刻在15°CA BTDC，主燃烧室4内第一甲醇喷射装置10采用单次喷射策略，喷射时刻为10°CABTDC，即喷射时刻与点火时刻的间隔为5°CA。Adopting the engine of the jet ignition type methanol engine combustion system of the present invention, when the high-pressure injection of methanol in the main combustion chamber 4 adopts a single injection strategy, the fuel supply of the ignition chamber 6 is completed in the intake stroke, and the ignition moment of the ignition device 9 is at 15° CA BTDC, the first methanol injection device 10 in the main combustion chamber 4 adopts a single injection strategy, and the injection timing is 10°CABTDC, that is, the interval between the injection timing and the ignition timing is 5°CA.
采用本发明射流点火式甲醇发动机燃烧系统的发动机，在主燃烧室内甲醇高压喷射采用两次喷射策略时，点火室6的燃料供给在进气行程完成，点火装置9的点火时刻在15°CA BTDC，主燃烧室4内第一甲醇喷射装置10采用2次喷射策略，第一次喷射的喷射时刻为60°CA BTDC，第二次喷射的喷射时刻为10°CA BTDC，第二次喷射的喷射时刻与点火时刻的间隔为5°CA。Adopting the engine of the jet ignition type methanol engine combustion system of the present invention, when the methanol high-pressure injection in the main combustion chamber adopts two injection strategies, the fuel supply of the ignition chamber 6 is completed in the intake stroke, and the ignition moment of the ignition device 9 is at 15 ° CA BTDC , the first methanol injection device 10 in the main combustion chamber 4 adopts two injection strategies, the injection time of the first injection is 60°CA BTDC, the injection time of the second injection is 10°CA BTDC, the injection time of the second injection The interval between the timing and the ignition timing is 5°CA.
综上所述，本发明通过在点火室6内形成适宜点燃的甲醇预混合气，燃烧之后形成多条高温湍流火焰射流点燃主燃烧室4内的多条高压甲醇喷雾，实现缸内直喷甲醇喷雾的可靠点火和甲醇喷雾扩散燃烧，使发动机以迪赛尔循环工作。由于甲醇采用高压直喷方式，可以消除节气损失，可有效地抑制爆震，并将甲醇发动机的压缩比提高至同等缸径柴油机的水平，从而进一步提高发动机的热效率，且使用本发明提供的射流点火式甲醇发动机燃烧系统的发动机，仅需要在缸盖上安装一套或数套点火室6及相应的燃料供给装置和点火装置9，成本较低，具有良好的产业化前景。In summary, the present invention forms a methanol premixed gas suitable for ignition in the ignition chamber 6, forms a plurality of high-temperature turbulent flame jets after combustion, and ignites a plurality of high-pressure methanol sprays in the main combustion chamber 4, thereby realizing direct injection of methanol in the cylinder Reliable ignition of spray and diffusion combustion of methanol spray make the engine work in Diesel cycle. Because methanol adopts high-pressure direct injection, it can eliminate gas-saving loss, effectively suppress knocking, and increase the compression ratio of the methanol engine to the level of a diesel engine with the same bore, thereby further improving the thermal efficiency of the engine, and using the jet ignition provided by the present invention The engine of the methanol engine combustion system only needs to install one or several sets of ignition chamber 6 and corresponding fuel supply device and ignition device 9 on the cylinder head, the cost is low, and it has a good industrialization prospect.
进一步的，本发明提供的射流点火式甲醇发动机燃烧系统，包括两种燃烧模式，使发动机实现可变工作循环，分别为：Further, the jet ignition methanol engine combustion system provided by the present invention includes two combustion modes to enable the engine to realize a variable working cycle, which are:
第一种，点火室6火焰射流点火、缸内火焰扩散燃烧模式：控制第一甲醇喷射装置10进行缸内早喷射，在气缸1内形成均质稀薄混合气，点火室6火焰射流点燃缸内甲醇均质预混合气，并以火焰扩散的模式进行燃烧，发动机在此燃烧模式下以奥托循环工作。The first type, ignition chamber 6 flame jet ignition, cylinder flame diffusion combustion mode: control the first methanol injection device 10 to perform early injection in the cylinder to form a homogeneous lean mixture in the cylinder 1, and the ignition chamber 6 flame jet ignites the cylinder Methanol is a homogeneous premixed gas, which is combusted in a flame diffusion mode, and the engine works in an Otto cycle in this combustion mode.
第二种，点火室6火焰射流点火、缸内喷雾扩散燃烧模式：控制第一甲醇喷射装置10进行缸内晚喷射，在缸内形成甲醇喷雾，点火室6火焰射流点燃缸内甲醇喷雾，并以喷雾扩散的模式进行燃烧，发动机在此燃烧模式下以迪赛尔循环工作。The second type, ignition chamber 6 flame jet ignition, cylinder spray diffusion combustion mode: control the first methanol injection device 10 to perform late injection in the cylinder, form methanol spray in the cylinder, ignition chamber 6 flame jet ignites the cylinder methanol spray, and Combustion is carried out in the mode of spray diffusion, and the engine works in Diesel cycle in this combustion mode.
根据第一甲醇喷射装置10的喷射定时的控制，实现两种燃烧模式之间的切换：According to the control of the injection timing of the first methanol injection device 10, switching between two combustion modes is realized:
当发动机采用点火室6火焰射流点火、缸内火焰扩散燃烧模式时，第一甲醇喷射装置10可以采用多次喷射方式，其第一次喷射的定时不早于排气门关闭时刻，最后一次喷射的定时不晚于50°CA BTDC。When the engine adopts the flame jet ignition in the ignition chamber 6 and the flame diffusion combustion mode in the cylinder, the first methanol injection device 10 can adopt a multiple injection mode, and the timing of the first injection is not earlier than the closing time of the exhaust valve, and the last injection The timing is no later than 50°CA BTDC.
当发动机采用点火室6火焰射流点火、缸内喷雾扩散燃烧模式时，第一甲醇喷射装置10可以采用多次喷射方式，其第一次喷射的定时不早于40°CA BTDC，最后一次喷射的定时不晚于10°CA ATDC。When the engine adopts the ignition chamber 6 flame jet ignition and the in-cylinder spray diffusion combustion mode, the first methanol injection device 10 can adopt a multiple injection mode, and the timing of the first injection is not earlier than 40 ° CA BTDC, and the timing of the last injection Timed no later than 10° CA ATDC.
以上，仅为本申请较佳的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应该以权利要求的保护范围为准。The above are only preferred specific implementation methods of the present application, but the scope of protection of the present application is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. All should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310585238.4ACN116608071A (en) | 2023-05-23 | 2023-05-23 | Jet ignition type methanol engine combustion system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310585238.4ACN116608071A (en) | 2023-05-23 | 2023-05-23 | Jet ignition type methanol engine combustion system |
| Publication Number | Publication Date |
|---|---|
| CN116608071Atrue CN116608071A (en) | 2023-08-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310585238.4APendingCN116608071A (en) | 2023-05-23 | 2023-05-23 | Jet ignition type methanol engine combustion system |
| Country | Link |
|---|---|
| CN (1) | CN116608071A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118622536A (en)* | 2024-06-28 | 2024-09-10 | 广西玉柴船电动力有限公司 | A methanol combustion system |
| CN118896040A (en)* | 2024-10-09 | 2024-11-05 | 无锡先进内燃动力技术创新中心 | A multi-hole alcohol sprayer and control method thereof |
| CN119062472A (en)* | 2024-09-03 | 2024-12-03 | 一汽解放汽车有限公司 | Methanol engine combustion control method and methanol engine system |
| CN119084134A (en)* | 2024-08-30 | 2024-12-06 | 江苏上交碳中和科技有限公司 | A jet flame ignition combustion system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192466A (en)* | 1977-02-21 | 1980-03-11 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Swirl injection valve |
| CN102425484A (en)* | 2011-11-04 | 2012-04-25 | 天津理工大学 | Method for improving natural gas engine compression ignition performance by adopting injection valve |
| CN109113880A (en)* | 2018-08-16 | 2019-01-01 | 江苏大学 | A kind of burning tissues method and its application of methanol/alcohol hydrogen-fueled internal combustion engine |
| CN110206630A (en)* | 2019-06-06 | 2019-09-06 | 大连理工大学 | A kind of combustion system of engine having igniting chamber composite channel |
| CN114233463A (en)* | 2021-12-10 | 2022-03-25 | 天津大学 | An internal combustion engine combustion system with direct injection of methanol fuel in the cylinder |
| CN217898006U (en)* | 2022-06-28 | 2022-11-25 | 天津大学 | Combustion system and engine |
| CN217950518U (en)* | 2022-07-20 | 2022-12-02 | 东风本田发动机有限公司 | Swirl jet ignition device of precombustion chamber |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4192466A (en)* | 1977-02-21 | 1980-03-11 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Swirl injection valve |
| CN102425484A (en)* | 2011-11-04 | 2012-04-25 | 天津理工大学 | Method for improving natural gas engine compression ignition performance by adopting injection valve |
| CN109113880A (en)* | 2018-08-16 | 2019-01-01 | 江苏大学 | A kind of burning tissues method and its application of methanol/alcohol hydrogen-fueled internal combustion engine |
| CN110206630A (en)* | 2019-06-06 | 2019-09-06 | 大连理工大学 | A kind of combustion system of engine having igniting chamber composite channel |
| CN114233463A (en)* | 2021-12-10 | 2022-03-25 | 天津大学 | An internal combustion engine combustion system with direct injection of methanol fuel in the cylinder |
| CN217898006U (en)* | 2022-06-28 | 2022-11-25 | 天津大学 | Combustion system and engine |
| CN217950518U (en)* | 2022-07-20 | 2022-12-02 | 东风本田发动机有限公司 | Swirl jet ignition device of precombustion chamber |
| Title |
|---|
| 邬惠乐: "《汽车技术词典》", vol. 1, 31 December 1989, pages: 436* |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118622536A (en)* | 2024-06-28 | 2024-09-10 | 广西玉柴船电动力有限公司 | A methanol combustion system |
| CN119084134A (en)* | 2024-08-30 | 2024-12-06 | 江苏上交碳中和科技有限公司 | A jet flame ignition combustion system |
| CN119062472A (en)* | 2024-09-03 | 2024-12-03 | 一汽解放汽车有限公司 | Methanol engine combustion control method and methanol engine system |
| CN118896040A (en)* | 2024-10-09 | 2024-11-05 | 无锡先进内燃动力技术创新中心 | A multi-hole alcohol sprayer and control method thereof |
| Publication | Publication Date | Title |
|---|---|---|
| CN114320572B (en) | Multi-combustion-mode ammonia fuel engine and control method thereof | |
| CN109209656B (en) | Combustion organization method for natural gas engine | |
| US20130104850A1 (en) | Multi-fuel pre-mixed combustion system of internal combustion engine | |
| CN107781026A (en) | Premixed compression ignition system for spark ignition internal combustion engine | |
| CN116608071A (en) | Jet ignition type methanol engine combustion system | |
| CN110094257A (en) | The precombustion chamber jet flame ignition combustion system of piston type Heavy End Aviation Fuel engine | |
| US20080257304A1 (en) | Internal combustion engine and combustion method of the same | |
| CN109296446B (en) | Combustion organization method of diesel micro-injection ignition natural gas engine with natural gas high and low pressure mixed injection and pre-combustion chamber | |
| KR20220047528A (en) | Method for operating a hydrogen fuelled combustion engine | |
| Rapp et al. | Lean-burn internal combustion engines | |
| CN114278426A (en) | A high ignition point fuel compression ignition and combustion regulation device based on flame jet control | |
| CN110905652B (en) | An engine with multiple high-pressure direct injection of natural gas in a cylinder and a stratified rapid combustion method thereof | |
| JP7204982B2 (en) | Multi-mode operation of internal combustion engine fueled by hydrogen | |
| CN115306595A (en) | Ammonia engine combustion system based on jet ignition and combustion control method thereof | |
| CN108571392B (en) | Lean burn system and method for spark-ignition engine | |
| CN114412648A (en) | Combustion organization method and system for inhibiting gasoline engine knocking | |
| CN112145281A (en) | Fuel preparation and supply system and method for active precombustion chamber | |
| CN101338694A (en) | Method and system for stratified equivalence ratio combustion of gasoline direct injection engine | |
| CN117231357A (en) | In-cylinder direct injection ammonia-hydrogen internal combustion engine and control method thereof | |
| CN101858245A (en) | Large Gas Fuel Engine Combustion System | |
| CN216554102U (en) | High-fuel ignition fuel compression ignition and combustion regulation and control device based on flame jet control | |
| CN115126592A (en) | Hydrogen pre-combustion chamber type engine and control method thereof | |
| CN102996223A (en) | Diesel Engine Premix Combustion System | |
| CN110067638A (en) | Fuel jet ignition type internal combustion engine premixing combustion system | |
| CN118030293A (en) | Ammonia hydrogen engine control method and ammonia hydrogen engine |
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |