技术领域technical field
本发明属于发动机工程技术领域，涉及一种获取焦炉气发动机最佳点火提前角的方法，适用于焦炉气发动机。当发动机燃用焦炉气时，通过该方法，可获取发动机在各个工况下兼顾动力性与排放性的最佳点火提前角，并通过对ECU中点火MAP图的重新标定，使其可直接应用于焦炉气发动机。The invention belongs to the technical field of engine engineering and relates to a method for obtaining the optimum ignition advance angle of a coke oven gas engine, which is suitable for the coke oven gas engine. When the engine burns coke oven gas, through this method, the optimal ignition advance angle of the engine under various working conditions can be obtained, and the ignition MAP diagram in the ECU can be recalibrated to make it directly Applied to coke oven gas engine.
背景技术Background technique
随着汽车工业的快速发展，其巨大的能源消耗已威胁到国家的能源供应安全，同时，排放的大量尾气也直接威胁到了生态环境与人类健康。清洁车用代用燃料已成为各国研究的重要课题，其中醇类燃料和气体燃料是应用最广泛的代用燃料，但相比于醇类燃料，气体燃料在资源、经济、排放、安全等诸多方面具有巨大优势，是目前汽车的首选代用燃料。作为产煤大国，产量巨大的炼焦副产物焦炉气(富含氢气、甲烷与一氧化碳等可燃气体)是一种理想的清洁车用代用燃料。With the rapid development of the automobile industry, its huge energy consumption has threatened the country's energy supply security, and at the same time, a large amount of exhaust gas has also directly threatened the ecological environment and human health. Alternative fuels for clean vehicles have become an important research topic in various countries, among which alcohol fuels and gaseous fuels are the most widely used alternative fuels, but compared with alcohol fuels, gaseous fuels have advantages in many aspects such as resources, economy, emissions and safety Huge advantages, it is the preferred alternative fuel for cars at present. As a large coal-producing country, coke oven gas (rich in combustible gases such as hydrogen, methane and carbon monoxide) with a huge output of coking by-products is an ideal alternative fuel for clean vehicles.
目前，焦炉气发动机是在汽油机的基础上直接改进所得，它保留了汽油机的控制策略，即根据节气门开度、进气压力及发动机转速等工况参数，通过查找MAP图，决定燃料的喷射脉宽与点火提前角。在实际使用中，由于焦炉气物化特性的特殊性，其动力性与排放性与汽油机存在较大差别：动力性方面，焦炉气当量空燃比混合气体积热值较汽油小15％左右，且在进气道喷射发动机中，气体燃料会导致充量系数下降，因此，焦炉气发动机动力性较汽油机有明显下降；排放方面，由于焦炉气富含氢气，燃烧速度快，且燃烧温度高，会导致碳氢与一氧化碳的排放量明显下降，但高温环境为氮氧化物的生成提供了理想环境，因此，氮氧化物的排放量较汽油机会有明显增加。综上所述，汽油机改为焦炉气发动机之后，需对点火提前角进行重新标定。At present, the coke oven gas engine is directly improved on the basis of the gasoline engine, and it retains the control strategy of the gasoline engine, that is, according to the operating parameters such as the throttle opening, intake pressure and engine speed, by looking up the MAP map to determine the fuel consumption. Injection pulse width and ignition advance angle. In actual use, due to the particularity of physical and chemical properties of coke oven gas, its power and emissions are quite different from those of gasoline engines: in terms of power, the volume calorific value of coke oven gas equivalent air-fuel ratio mixture is about 15% smaller than that of gasoline, And in the port injection engine, the gaseous fuel will lead to a decrease in the charge coefficient, therefore, the power of the coke oven gas engine is significantly lower than that of the gasoline engine; in terms of emissions, because the coke oven gas is rich in hydrogen, the combustion speed is fast, and the combustion temperature High temperature will lead to a significant decrease in the emissions of hydrocarbons and carbon monoxide, but the high temperature environment provides an ideal environment for the formation of nitrogen oxides, so the emissions of nitrogen oxides will increase significantly compared with gasoline engines. To sum up, after the gasoline engine is changed to a coke oven gas engine, the ignition advance angle needs to be recalibrated.
当前，常见的点火提前角优化方法为MBT(Maximum Brake Torque)优化法，即选择发动机扭矩最大时的点火提前角作为发动机点火提前角。利用该方法确定的点火提前角只考虑了发动机的动力性，而未兼顾到排放性，应用于焦炉气发动机时，势必会导致氮氧化物的排放严重超标，给大气带来严重污染。At present, the common ignition advance angle optimization method is the MBT (Maximum Brake Torque) optimization method, that is, the ignition advance angle when the engine torque is maximum is selected as the engine ignition advance angle. The ignition advance angle determined by this method only considers the power of the engine, but not the emission. When applied to a coke oven gas engine, the emission of nitrogen oxides will inevitably exceed the standard and bring serious pollution to the atmosphere.
发明内容Contents of the invention
本发明的目的是提出一种获取焦炉气发动机最佳点火提前角的方法，利用由汽油机改造而来的焦炉气发动机，结合测功机、排放分析仪、燃烧分析仪等设备，研究不同工况下点火提前角对发动机动力性、排放特性等的影响规律，并据此利用点火提前角优化算法，最终建立单目标求解模型，并计算得到各个工况下的最佳点火提前角。该点火提前角可通过标定软件写入ECU的点火MAP图，用于焦炉气发动机的实际控制。The purpose of the present invention is to propose a method for obtaining the optimum ignition advance angle of a coke oven gas engine, using a coke oven gas engine transformed from a gasoline engine, combined with equipment such as a dynamometer, an emission analyzer, and a combustion analyzer to study different The influence of ignition advance angle on engine power and emission characteristics under working conditions, and based on this, using the ignition advance angle optimization algorithm, a single-objective solution model is finally established, and the best ignition advance angle under each working condition is calculated. The ignition advance angle can be written into the ignition MAP map of the ECU through the calibration software, which is used for the actual control of the coke oven gas engine.
本发明采用的技术方案：The technical scheme adopted in the present invention:
本发明一种获取焦炉气发动机最佳点火提前角的方法，具体步骤如下：The present invention is a method for obtaining the optimum ignition advance angle of a coke oven gas engine, and the specific steps are as follows:
第一步：首先，通过测功机控制焦炉气发动机的运行工况，同时获取在每个工况下焦炉气发动机的扭矩；数据采集与控制系统控制点火提前角，并确定每个工况下焦炉气发动机稳定运行的点火提前角范围，稳定运行状态为无爆震，且转速与功率波动范围均在5％以内。其次，通过排放分析仪测量得到催化器入口处在每个工况下对应不同点火提前角时的氮氧化物、一氧化碳及碳氢排放物浓度。再次，通过燃烧分析仪采集并分析计算得到在每个工况下对应不同点火提前角时的焦炉气发动机缸内燃烧信息，包括缸内压力和放热率。最后，通过数据采集与控制系统，读取每个工况下对应不同点火提前角时的焦炉气发动机的扭矩，氮氧化物、一氧化碳及碳氢排放物浓度，以及焦炉气发动机缸内燃烧信息。Step 1: First, control the operating conditions of the coke oven gas engine through the dynamometer, and at the same time obtain the torque of the coke oven gas engine under each working condition; the data acquisition and control system controls the ignition advance angle, and determines the The range of ignition advance angle for the stable operation of the coke oven gas engine, the stable operation state is no knocking, and the fluctuation range of the speed and power is within 5%. Secondly, the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions at the inlet of the catalyst at the inlet of the catalyst corresponding to different ignition advance angles under each working condition is measured by the emission analyzer. Thirdly, the in-cylinder combustion information of the coke oven gas engine corresponding to different ignition advance angles under each working condition is obtained through the collection and analysis of the combustion analyzer, including in-cylinder pressure and heat release rate. Finally, through the data acquisition and control system, read the torque of the coke oven gas engine corresponding to different ignition advance angles under each working condition, the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions, and the in-cylinder combustion of the coke oven gas engine information.
第二步：首先，根据焦炉气发动机的扭矩以及氮氧化物、一氧化碳和碳氢排放物浓度在每个工况下对应不同点火提前角时的变化关系，拟合出多项式数学模型。其次，在焦炉气发动机稳定运行的前提下，以点火提前角为优化参数，获得焦炉气发动机的扭矩最大，氮氧化物、一氧化碳和碳氢排放物浓度最低为优化目标，建立多目标优化模型。再次，采用评价函数建立单目标模型，具体为：建立点火提前角的评价函数如下：The second step: First, according to the torque of the coke oven gas engine and the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions in each working condition, a polynomial mathematical model is fitted. Secondly, under the premise of stable operation of the coke oven gas engine, the ignition advance angle is used as the optimization parameter to obtain the maximum torque of the coke oven gas engine and the minimum concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions as the optimization objectives, and establish a multi-objective optimization Model. Again, the evaluation function is used to establish a single-objective model, specifically: the evaluation function for establishing the ignition advance angle is as follows:
其中，g(θign)为评价指标，αi为fi(θign)对应的权重，设α1＝α2＝0.4，α3＝α4＝0.1，α1为焦炉气发动机扭矩的权重，α2为氮氧化物排放量的权重，α3为一氧化碳排放量的权重，α4为碳氢排放量的权重，点火提前角的上限为爆震临界点KTA，下限为稳定工作临界点SCP，稳定工作状态为焦炉气发动机的转速与功率波动范围均在5％以内，f1(θign)代表焦炉气发动机的扭矩拟合函数，f2(θign)代表氮氧化物排放量拟合函数，f3(θign)代表一氧化碳排放量拟合函数，f4(θign)代表碳氢排放量拟合函数。Among them, g(θign ) is the evaluation index, αi is the weight corresponding to fi (θign ), let α1 =α2 =0.4, α3 =α4 =0.1, α1 is the coke oven gas engine torque weight, α2 is the weight of nitrogen oxide emissions, α3 is the weight of carbon monoxide emissions, α4 is the weight of hydrocarbon emissions, the upper limit of the ignition advance angle is the critical knock point KTA, and the lower limit is the critical point of stable operation SCP, the stable working state is that the speed and power fluctuation range of the coke oven gas engine are within 5%, f1 (θign ) represents the torque fitting function of the coke oven gas engine, f2 (θign ) represents the nitrogen oxide emission f3 (θign ) represents the carbon monoxide emission fitting function, and f4 (θign ) represents the hydrocarbon emission fitting function.
最后，根据单目标模型求解获取最佳点火提前角，具体如下：对fi(θign)在量级和量纲上的差别进行归一化处理：Finally, the optimal ignition advance angle is obtained by solving the single-objective model, as follows: normalize the difference in magnitude and dimension of fi (θign ):
其中，best(fi)为fi(θign)在当前工况下且在点火提前角范围内的理想值，best(f1)＝max(f1(θign))，best(f2)＝min(f2(θign))，best(f3)＝min(f3(θign))，best(f4)＝min(f4(θign))；Among them, best(fi ) is the ideal value of fi (θign ) under the current working condition and within the range of ignition advance angle, best(f1 )=max(f1 (θign )), best(f2 )=min(f2 (θign )), best(f3 )=min(f3 (θign )), best(f4 )=min(f4 (θign ));
用hi(θign)替代fi(θign)，最终建立评价函数模型如下：Replace fi (θign ) with hi (θign ), and finally establish the evaluation function model as follows:
然后计算得到当前工况的最佳点火提前角。Then calculate the optimal ignition advance angle for the current working condition.
在每个工况下对应不同点火提前角时的焦炉气发动机的扭矩，氮氧化物、一氧化碳及碳氢排放物浓度，以及焦炉气发动机缸内燃烧信息均采用多次测量取平均值作为最终结果，测量次数取十次以上。Under each working condition, the torque of the coke oven gas engine corresponding to different ignition advance angles, the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions, and the combustion information in the cylinder of the coke oven gas engine are all taken as the average value of multiple measurements. For the final result, the number of measurements is more than ten.
多项式数学模型的拟合具体如下：The fitting of the polynomial mathematical model is as follows:
采用麦夸特法与通用全局优化算法拟合出fi(θign)，fi(θign)代表在每个工况下对应不同点火提前角的多项式拟合函数，公式如下：The fi (θign ) is fitted by the Mcquart method and the general global optimization algorithm, and the fi (θign ) represents the polynomial fitting function corresponding to different ignition advance angles under each working condition. The formula is as follows:
fi(θign)＝P1+P2·θign+P3·θign2+P4·θign3fi (θign )＝P1 +P2 ·θign +P3 ·θign2 +P4 ·θign3
其中，θign代表点火提前角；P1、P2、P3、P4为拟合后多项式的系数；fi(θign)代表拟合函数的统一表达式，i＝1,2,3,4，具体如下：Among them, θign represents the ignition advance angle; P1 , P2 , P3 , P4 are the coefficients of the polynomial after fitting; fi (θign ) represents the unified expression of the fitting function, i=1,2,3 ,4, as follows:
Tq代表焦炉气发动机的扭矩，NOx代表氮氧化物排放量，CO代表一氧化碳排放量，THC代表碳氢排放量；f1(θign)和在每个工况下数据采集与控制系统读取的焦炉气发动机扭矩值的相关系数、f2(θign)和在每个工况下数据采集与控制系统读取的氮氧化物排放量的相关系数、f3(θign)和在每个工况下数据采集与控制系统读取的一氧化碳排放量的相关系数、f4(θign)和在每个工况下数据采集与控制系统读取的碳氢排放量的相关系数均大于0.98。Tq represents the torque of the coke oven gas engine, NOx represents the emission of nitrogen oxides, CO represents the emission of carbon monoxide, THC represents the emission of hydrocarbons; f1 (θign ) and the data acquisition and control system reading in each working condition Correlation coefficient of coke oven gas engine torque value, f2 (θign ) and the correlation coefficient of nitrogen oxide emissions read by data acquisition and control system in each working condition, f3 (θign ) and in The correlation coefficient, f4 (θign ) of the carbon monoxide emissions read by the data acquisition and control system under each working condition and the correlation coefficient of the hydrocarbon emissions read by the data acquisition and control system under each working condition are greater than 0.98.
本发明的有益效果在于：The beneficial effects of the present invention are:
(1)本发明获取的最佳点火提前角兼顾动力性与排放性。(1) The optimal ignition advance angle obtained by the present invention takes into account power performance and emission performance.
(2)本发明设计的算法，可快速获取最佳点火提前角。(2) The algorithm designed by the present invention can quickly obtain the optimal ignition advance angle.
附图说明Description of drawings
图1是本发明采集焦炉气发动机性能指标数据的系统框图。Fig. 1 is a system block diagram of the present invention for collecting coke oven gas engine performance index data.
图2为本发明的具体流程图。Fig. 2 is a specific flow chart of the present invention.
具体实施方式Detailed ways
下面结合附图进一步说明本发明。Further illustrate the present invention below in conjunction with accompanying drawing.
如图2所示，本发明一种获取焦炉气发动机最佳点火提前角的方法，具体步骤如下：As shown in Figure 2, a kind of method that the present invention obtains the optimal ignition advance angle of coke oven gas engine, concrete steps are as follows:
第一步：确定焦炉气发动机在不同工况下稳定运行(无爆震，且转速与功率波动范围均在5％以内)的点火提前角范围。Step 1: Determine the ignition advance angle range for the coke oven gas engine to run stably (without knocking, and the speed and power fluctuations are within 5%) under different working conditions.
如图1所示，焦炉气发动机1是在汽油机的基础上改造而来，焦炉气发动机1的燃料供给系统包括焦炉气气罐2和减压阀3。首先，通过测功机4控制焦炉气发动机的运行工况(工况参数为转速和功率)，同时获取在每个工况下焦炉气发动机的扭矩；数据采集与控制系统8控制点火提前角，并确定每个工况下焦炉气发动机稳定运行(无爆震，且转速与功率波动范围均在5％以内，爆震可通过燃烧分析仪7分析得到，转速与功率可通过测功机4显示数值直接得到)的点火提前角范围。其次，通过排放分析仪(也称尾气分析仪)5测量得到催化器6入口处在每个工况下对应不同点火提前角时的氮氧化物、一氧化碳及碳氢排放物浓度。再次，通过燃烧分析仪7采集并分析计算得到在每个工况下对应不同点火提前角时的焦炉气发动机缸内燃烧信息，包括缸内压力和放热率；在每个工况下对应不同点火提前角时的焦炉气发动机的扭矩，氮氧化物、一氧化碳及碳氢排放物浓度，以及焦炉气发动机缸内燃烧信息均采用多次测量取平均值作为最终结果来提高试验数据的准确性，测量次数取十次以上。最后，通过数据采集与控制系统8，读取每个工况下对应不同点火提前角时的焦炉气发动机的扭矩，氮氧化物、一氧化碳及碳氢排放物浓度，以及焦炉气发动机缸内燃烧信息。As shown in FIG. 1 , the coke oven gas engine 1 is modified on the basis of a gasoline engine. The fuel supply system of the coke oven gas engine 1 includes a coke oven gas tank 2 and a pressure reducing valve 3 . First, the operating conditions of the coke oven gas engine are controlled by the dynamometer 4 (the operating condition parameters are speed and power), and the torque of the coke oven gas engine in each working condition is obtained at the same time; the data acquisition and control system 8 controls the ignition advance Angle, and determine the stable operation of the coke oven gas engine under each working condition (no knocking, and the fluctuation range of the speed and power is within 5%, the knocking can be obtained by analyzing the combustion analyzer 7, and the speed and power can be obtained by the dynamometer machine 4 display value directly obtained) ignition advance angle range. Secondly, the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions at the inlet of the catalytic converter 6 corresponding to different ignition advance angles under each working condition is measured by the emission analyzer (also called exhaust gas analyzer) 5 . Again, the combustion information in the cylinder of the coke oven gas engine corresponding to different ignition advance angles under each working condition is obtained through the collection and analysis of the combustion analyzer 7, including in-cylinder pressure and heat release rate; The torque of the coke oven gas engine at different ignition advance angles, the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions, and the combustion information in the cylinder of the coke oven gas engine are all measured by taking the average value as the final result to improve the accuracy of the test data. Accuracy, the number of measurements is more than ten times. Finally, through the data acquisition and control system 8, read the torque of the coke oven gas engine corresponding to different ignition advance angles under each working condition, the concentration of nitrogen oxides, carbon monoxide and hydrocarbon emissions, and the coke oven gas engine cylinder Burn information.
第二步：拟合出多项式数学模型。Step 2: Fit a polynomial mathematical model.
为降低模型复杂度，同时减少计算量，节省计算成本，采用麦夸特法与通用全局优化算法拟合出fi(θign)，fi(θign)代表在每个工况下对应不同点火提前角的多项式拟合函数，公式如下：In order to reduce the complexity of the model, reduce the amount of calculation, and save the calculation cost, fi (θign ) is fitted by theMcQuarter method and the general global optimization algorithm. The polynomial fitting function of ignition advance angle, the formula is as follows:
fi(θign)＝P1+P2·θign+P3·θign2+P4·θign3fi (θign )＝P1 +P2 ·θign +P3 ·θign2 +P4 ·θign3
其中，θign代表点火提前角；P1、P2、P3、P4为拟合后多项式的系数；fi(θign)代表拟合函数的统一表达式，i＝1,2,3,4，具体如下：Among them, θign represents the ignition advance angle; P1 , P2 , P3 , P4 are the coefficients of the polynomial after fitting; fi (θign ) represents the unified expression of the fitting function, i=1,2,3 ,4, as follows:
Tq代表焦炉气发动机的扭矩，NOx代表氮氧化物排放量，CO代表一氧化碳排放量，THC代表碳氢排放量；f1(θign)代表焦炉气发动机的扭矩拟合函数，f2(θign)代表氮氧化物排放量拟合函数，f3(θign)代表一氧化碳排放量拟合函数，f4(θign)代表碳氢排放量拟合函数，f1(θign)和在每个工况下数据采集与控制系统8读取的焦炉气发动机扭矩值的相关系数、f2(θign)和在每个工况下数据采集与控制系统8读取的氮氧化物排放量的相关系数、f3(θign)和在每个工况下数据采集与控制系统8读取的一氧化碳排放量的相关系数、f4(θign)和在每个工况下数据采集与控制系统8读取的碳氢排放量的相关系数均大于0.98。Tq represents the torque of the coke oven gas engine, NOx represents the emission of nitrogen oxides, CO represents the emission of carbon monoxide, THC represents the emission of hydrocarbons; f1 (θign ) represents the torque fitting function of the coke oven gas engine, f2 (θign ) represents the fitting function of nitrogen oxide emissions, f3 (θign ) represents the fitting function of carbon monoxide emissions, f4 (θign ) represents the fitting function of carbon and hydrogen emissions, f1 (θign ) and The correlation coefficient of the coke oven gas engine torque value read by the data acquisition and control system 8 under each working condition, f2 (θign ) and the nitrogen oxides read by the data acquisition and control system 8 under each working condition The correlation coefficient of emission, f3 (θign ) and the correlation coefficient of carbon monoxide emission read by the data collection and control system 8 under each working condition, f4 (θign ) and the data collection under each working condition The correlation coefficients with the hydrocarbon emissions read by the control system 8 are all greater than 0.98.
第三步：建立多目标优化模型。Step 3: Establish a multi-objective optimization model.
点火提前角的优化目标是在保证焦炉气发动机稳定运行的前提下获得最大的动力性与最低的排放，其数学表达式如下：The optimization goal of the ignition advance angle is to obtain the maximum power and the lowest emission under the premise of ensuring the stable operation of the coke oven gas engine. The mathematical expression is as follows:
其中，点火提前角的上限为爆震临界点KTA(Knock Threshold Angle)，下限为稳定工作临界点SCP(Stable Critical Point)，稳定工作状态为焦炉气发动机的转速与功率波动范围均在5％以内，max代表求最大值，min代表求最小值。因此，公式(1)进一步表达为：Among them, the upper limit of the ignition advance angle is the knock critical point KTA (Knock Threshold Angle), the lower limit is the stable operating critical point SCP (Stable Critical Point), and the stable operating state is that the speed and power fluctuation range of the coke oven gas engine are both within 5%. Within, max means seeking the maximum value, and min means seeking the minimum value. Therefore, formula (1) is further expressed as:
第四步：采用评价函数法建立单目标模型。The fourth step: use the evaluation function method to establish a single-objective model.
引入权重对每个性能指标的重要程度加以区分，建立点火提前角的评价函数如下：The weight is introduced to distinguish the importance of each performance index, and the evaluation function of the ignition advance angle is established as follows:
其中，g(θign)为评价指标，αi为fi(θign)对应的权重。Among them, g(θign ) is the evaluation index, and αi is the weight corresponding to fi (θign ).
在焦炉气发动机中，动力性与排放中的氮氧化物最为重要，因此，设发动机扭矩与氮氧化物排放量的权重为0.4(α1＝α2＝0.4)，一氧化碳与碳氢排放量的权重为0.1(α3＝α4＝0.1)。In coke oven gas engines, nitrogen oxides in power and emissions are the most important. Therefore, the weight of engine torque and nitrogen oxide emissions is set to 0.4 (α1 =α2 =0.4), and carbon monoxide and hydrocarbon emissions The weight of is 0.1 (α3 =α4 =0.1).
第五步：单目标模型求解获取最佳点火提前角。Step 5: Solve the single-objective model to obtain the best ignition advance angle.
由于各性能指标的单位不同，且数量级差异巨大，为消除这一因素对线性加权所产生的影响，需对各拟合函数fi(θign)在量级和量纲上的差别进行归一化处理，具体如下：Since the units of each performance index are different and the order of magnitude differs greatly, in order to eliminate the influence of this factor on the linear weighting, it is necessary to normalize the difference in magnitude and dimension of each fitting function fi (θign ) processing, as follows:
其中，best(fi)为fi(θign)在当前工况下且在点火提前角范围内的理想值，根据第二步中多项式拟合结果计算得到，即best(f1)＝max(f1(θign))，best(f2)＝min(f2(θign))，best(f3)＝min(f3(θign))，best(f4)＝min(f4(θign))。Among them, best(fi ) is the ideal value of fi (θign ) under the current working condition and within the range of ignition advance angle, which is calculated according to the polynomial fitting result in the second step, that is, best(f1 )=max (f1 (θign )), best(f2 )=min(f2 (θign )), best(f3 )=min(f3 (θign )), best(f4 )=min(f4 (θign )).
用hi(θign)替代fi(θign)，最终建立评价函数模型如下：Replace fi (θign ) with hi (θign ), and finally establish the evaluation function model as follows:
然后计算得到当前工况的最佳点火提前角。Then calculate the optimal ignition advance angle for the current working condition.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385681.6ACN108757264B (en) | 2018-04-26 | 2018-04-26 | A Method of Obtaining the Best Ignition Advance Angle of Coke Oven Gas Engine |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385681.6ACN108757264B (en) | 2018-04-26 | 2018-04-26 | A Method of Obtaining the Best Ignition Advance Angle of Coke Oven Gas Engine |
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| CN108757264Atrue CN108757264A (en) | 2018-11-06 |
| CN108757264B CN108757264B (en) | 2019-12-10 |
| Application Number | Title | Priority Date | Filing Date |
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| CN201810385681.6AActiveCN108757264B (en) | 2018-04-26 | 2018-04-26 | A Method of Obtaining the Best Ignition Advance Angle of Coke Oven Gas Engine |
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| CN (1) | CN108757264B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610385A (en)* | 2020-12-31 | 2021-04-06 | 重庆隆鑫通航发动机制造有限公司 | Device and method for measuring ignition advance angle of engine |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04153579A (en)* | 1990-10-16 | 1992-05-27 | Nok Corp | Ignition controller |
| US20030150424A1 (en)* | 2002-02-08 | 2003-08-14 | Kohn Min | Method and system for controlling engine ignition timing |
| CN101333961A (en)* | 2008-08-07 | 2008-12-31 | 清华大学 | Optimization method of hydrogen and natural gas mixed fuel engine |
| CN104033310A (en)* | 2014-06-12 | 2014-09-10 | 浙江大学 | Method for adjusting ignition advance angle of coke-oven gas engine by means of component detection |
| CN203939615U (en)* | 2014-06-12 | 2014-11-12 | 浙江大学 | A kind of circuit of being adjusted coke-oven gas engine ignition advance angle by composition detection |
| CN104200271A (en)* | 2014-08-22 | 2014-12-10 | 华南农业大学 | Multi-objective optimization algorithm for engine |
| CN104598654A (en)* | 2014-10-07 | 2015-05-06 | 芜湖扬宇机电技术开发有限公司 | Ignition advance angle prediction system and method thereof |
| CN105116730A (en)* | 2015-08-21 | 2015-12-02 | 华北水利水电大学 | Hydrogen fuel engine ignition advance angle optimization system based on particle swarm fuzzy neural network, and optimization method thereof |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04153579A (en)* | 1990-10-16 | 1992-05-27 | Nok Corp | Ignition controller |
| US20030150424A1 (en)* | 2002-02-08 | 2003-08-14 | Kohn Min | Method and system for controlling engine ignition timing |
| CN101333961A (en)* | 2008-08-07 | 2008-12-31 | 清华大学 | Optimization method of hydrogen and natural gas mixed fuel engine |
| CN104033310A (en)* | 2014-06-12 | 2014-09-10 | 浙江大学 | Method for adjusting ignition advance angle of coke-oven gas engine by means of component detection |
| CN203939615U (en)* | 2014-06-12 | 2014-11-12 | 浙江大学 | A kind of circuit of being adjusted coke-oven gas engine ignition advance angle by composition detection |
| CN104200271A (en)* | 2014-08-22 | 2014-12-10 | 华南农业大学 | Multi-objective optimization algorithm for engine |
| CN104598654A (en)* | 2014-10-07 | 2015-05-06 | 芜湖扬宇机电技术开发有限公司 | Ignition advance angle prediction system and method thereof |
| CN105116730A (en)* | 2015-08-21 | 2015-12-02 | 华北水利水电大学 | Hydrogen fuel engine ignition advance angle optimization system based on particle swarm fuzzy neural network, and optimization method thereof |
| Title |
|---|
| 何明山等: "点火提前角对焦炉气天然气混燃发动机燃烧特性的影响分析", 《中国安全生产科学技术》* |
| 何海斌: "内燃机燃用焦炉气的燃烧过程仿真及性能优化研究", 《中国博士学位论文全文数据库（电子期刊）》* |
| 刘晓晨: "焦炉气发动机工作过程数值模拟及性能优化研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》* |
| 曹博: "焦炉气燃料发动机工作过程数值模拟与参数优化", 《中国优秀硕士学位论文全文数据库（电子期刊）》* |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610385A (en)* | 2020-12-31 | 2021-04-06 | 重庆隆鑫通航发动机制造有限公司 | Device and method for measuring ignition advance angle of engine |
| Publication number | Publication date |
|---|---|
| CN108757264B (en) | 2019-12-10 |
| Publication | Publication Date | Title |
|---|---|---|
| Xin et al. | Effect of different volume fractions of ammonia on the combustion and emission characteristics of the hydrogen-fueled engine | |
| Pathak et al. | Optimization of EGR effects on performance and emission parameters of a dual fuel (Diesel+ CNG) CI engine: an experimental investigation | |
| Luo et al. | Effect of equivalence ratios on the power, combustion stability and NOx controlling strategy for the turbocharged hydrogen engine at low engine speeds | |
| Ji et al. | Effect of ammonia addition on combustion and emissions performance of a hydrogen engine at part load and stoichiometric conditions | |
| Roso et al. | Effects of mixture enleanment in combustion and emission parameters using a flex-fuel engine with ethanol and gasoline | |
| Zhao et al. | Effects of compression ratio on the combustion and emission of a hydrogen enriched natural gas engine under different excess air ratio | |
| Hamdan et al. | Hydrogen supplement co-combustion with diesel in compression ignition engine | |
| Galloni et al. | Effects of exhaust gas recycle in a downsized gasoline engine | |
| Zhou et al. | Effects of lean combustion coupling with intake tumble on economy and emission performance of gasoline engine | |
| Fu et al. | Experimental investigation on the influences of exhaust gas recirculation coupling with intake tumble on gasoline engine economy and emission performance | |
| Zhuang et al. | The effect of ethanol direct injection on knock mitigation in a gasoline port injection engine | |
| Sun et al. | Cycle variations in a hydrogen internal combustion engine | |
| Ma et al. | Twenty percent hydrogen-enriched natural gas transient performance research | |
| Shen et al. | Investigation on the EGR effect to further improve fuel economy and emissions effect of Miller cycle turbocharged engine | |
| Liu et al. | Comparative study on thermodynamics, combustion and emissions of turbocharged gasoline direct injection (GDI) engine under NEDC and steady-state conditions | |
| CN114720139B (en) | Emission calibration method, device, equipment and medium based on powertrain test bench | |
| Molina et al. | Experimental evaluation of methane-hydrogen mixtures for enabling stable lean combustion in spark-ignition engines for automotive applications | |
| Martins et al. | Low cost wet ethanol for spark-ignited engines: further investigations | |
| Boulahlib et al. | Experimental study of combustion performances and emissions of a spark ignition cogeneration engine operating in lean conditions using different fuels | |
| Meng et al. | Comprehensive multi-performance research of hydrogen-fueled Wankel rotary engine by experimental and data-driven methods | |
| Silveira et al. | Hydrogen-fueled PFI SI engine investigation for near-zero NOx emissions in de-throttled and supercharged ultra-lean burn conditions | |
| Krishnanunni et al. | Strategies for stable operation of a H2-ICE at high equivalence ratios with use of unburnt and externally injected hydrogen for reducing NOx emissions | |
| CN108757264B (en) | A Method of Obtaining the Best Ignition Advance Angle of Coke Oven Gas Engine | |
| Shamekhi et al. | Performance and emissions characteristics investigation of a bi-fuel SI engine fuelled by CNG and gasoline | |
| Ghosh et al. | Performance and emission parameters analysis of gasoline engine with EGR |
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