【発明の詳細な説明】 本発明は試験用内燃機関の燃料消費量計測装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel consumption measuring device for a test internal combustion engine.
従来のこの種燃料消費量計測装置を第１図に示
す。同図において、０１は燃料サービスタンク、
０２０は同サービスタンク０１からの燃料油路、
０２はビユーレツト式燃料消費量計（以下燃費計
と呼ぶ）、０３はサービスタンク０１と燃費計０
２の燃料通路を切換える三方切換弁、０４は燃料
供給ポンプ、０２１は上記三方切換弁０３からの
燃料油路、０５は燃料噴射ポンプ、０２２は燃料
供給ポンプ０４からの燃料油路、０６はシリンダ
ヘツド、０７は同シリンダヘツド０６に取付けら
れた燃料噴射弁、０２３は燃料噴射ポンプ０５か
らの燃料油路、０８はピストン、０９は燃料噴射
弁０７からのリーク集合タンク、０２４は燃料噴
射弁０７からのリーク燃料油路である。 A conventional fuel consumption measuring device of this type is shown in FIG. In the same figure, 01 is a fuel service tank;
020 is the fuel oil line from the same service tank 01,
02 is Biuret type fuel consumption meter (hereinafter referred to as fuel consumption meter), 03 is service tank 01 and fuel consumption meter 0
04 is a fuel supply pump, 021 is a fuel oil passage from the three-way switching valve 03, 05 is a fuel injection pump, 022 is a fuel oil passage from fuel supply pump 04, 06 is a cylinder 07 is the fuel injection valve attached to the cylinder head 06, 023 is the fuel oil path from the fuel injection pump 05, 08 is the piston, 09 is the leak collection tank from the fuel injection valve 07, 024 is the fuel injection valve 07 This is the fuel oil line leaking from.
デイーゼル機関ではシリンダ内に燃料を噴射さ
せる場合、燃料は燃料サービスタンク０１から燃
料油路０２０、三方切換弁０３、燃料油路０２１
を経て、燃料供給ポンプ０４で燃料油路０２２を
通して燃料噴射ポンプ０５で燃料を高圧に圧縮し
て燃料油路０２３を経てシリンダヘツドに取付け
られた燃料噴射弁０７によりシリンダ内のピスト
ン０８に噴射される。一方燃料噴射弁０７からの
リーク燃料油はリーク燃料油路０２４を経てリー
ク集合タンク０９にためられる。 In a diesel engine, when fuel is injected into the cylinder, the fuel is transferred from the fuel service tank 01 to the fuel oil line 020, the three-way switching valve 03, and the fuel oil line 021.
Then, the fuel is compressed to high pressure by the fuel injection pump 05 through the fuel oil passage 022 by the fuel supply pump 04, and is injected into the piston 08 in the cylinder by the fuel injection valve 07 attached to the cylinder head through the fuel oil passage 023. Ru. On the other hand, leak fuel oil from the fuel injection valve 07 passes through a leak fuel oil passage 024 and is collected in a leak collecting tank 09.
この燃料の流量を計測するには、三方切換弁０
３を切換えて燃費計０２からの燃料油路とし、燃
費計０２から出るある規定量の流出時間を計測し
て燃料消費量としていた。 To measure the flow rate of this fuel, the three-way switching valve 0
3 was switched to use the fuel oil path from the fuel efficiency meter 02, and the amount of fuel consumption was determined by measuring the time for a specified amount of oil to flow out from the fuel consumption meter 02.
従来の燃料消費量として計測していたものは、
燃料油路を流れている燃料量であり、それはシリ
ンダ内に噴射された燃料と燃料噴射弁からのリー
ク燃料が含まれている。従来は、シリンダ内に噴
射される量が大きい場合、リーク量は無視し、噴
射量の少ない場合はリーク量を別に計測して換算
する方法でしていた。これは、燃料サービスタン
クからの燃料油路は油路に同タンクの高さだけの
圧力がかかつており、燃料噴射弁からのリーク燃
料は大気圧であるため、直接燃費計の後の燃料油
路には戻せなかつたためである。しかし、これで
は精度もなく、かなりの時間を要する欠点があつ
た。 What was traditionally measured as fuel consumption is
This is the amount of fuel flowing through the fuel oil passage, which includes the fuel injected into the cylinder and the fuel leaking from the fuel injection valve. Conventionally, when the amount injected into the cylinder was large, the leak amount was ignored, and when the amount injected was small, the leak amount was measured separately and converted. This is because the pressure in the fuel oil line from the fuel service tank is equal to the height of the tank, and the fuel leaking from the fuel injection valve is at atmospheric pressure. This was because they could not be returned to the road. However, this had the drawback of not being accurate and requiring a considerable amount of time.
本発明の目的は上記の点に着目し、シリンダ内
に噴射された燃料量が正確に計測できる燃料量計
測装置を提供することであり、その特徴とすると
ころは、高所に配設した燃料タンクから三方切換
弁を介してビユーレツト式燃料消費量計に燃料を
導入すると共に再び上記三方切換弁を介して上記
消費量計内の燃料を燃料噴射ポンプに送り試験用
機関の燃料噴射弁に供給して燃料の消費量を計測
する装置において、上記消費量計の液面上方から
加圧する手段と、上記三方切換弁と上記燃料噴射
ポンプとの間に配置され液面を一定に保つフロー
ト制御弁を設けた燃料供給タンクと、上記燃料噴
射弁のリーク油を上記燃料供給タンクに還流させ
る手段とを備えたことである。 An object of the present invention is to provide a fuel amount measuring device that can accurately measure the amount of fuel injected into a cylinder, paying attention to the above points. Fuel is introduced from the tank to the Biuret type fuel consumption meter via the three-way switching valve, and the fuel in the consumption meter is sent to the fuel injection pump again via the three-way switching valve and supplied to the fuel injection valve of the test engine. and a float control valve disposed between the three-way switching valve and the fuel injection pump to keep the liquid level constant. The present invention includes a fuel supply tank provided with a fuel injection valve, and a means for circulating leaked oil from the fuel injection valve to the fuel supply tank.
以下図面を参照して本発明による実施例につき
説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第２図は本発明による１実施例の装置を示す説
明図である。 FIG. 2 is an explanatory diagram showing one embodiment of the apparatus according to the present invention.
図において、１は燃料サービスタンク、２０は
同サービスタンク１からの燃料油路、２はビユー
レツト式燃料消費量計（以下燃費計とよぶ）、３
は燃料サービスタンク１と燃費計２の燃料油路を
切換える三方切換弁、４は燃料供給ポンプ、２１
は三方切換弁３からの燃料油路、５は燃料噴射ポ
ンプ、２２は燃料供給ポンプ４からの燃料油路、
２３は燃料噴射ポンプ５からの燃料油路、６はシ
リンダヘツド、７は同シリンダヘツド６に取付け
られた燃料噴射弁、８はピストン、９は燃料噴射
弁７からのリーク集合タンク、２４は燃料噴射弁
７からのリーク燃料油路であり、これらのものは
いずれも上記従来のデイーゼル機関の燃料消費量
計測装置とほぼ同様である。 In the figure, 1 is a fuel service tank, 20 is a fuel oil path from the service tank 1, 2 is a biuret type fuel consumption meter (hereinafter referred to as a fuel consumption meter), 3
is a three-way switching valve that switches the fuel oil path between the fuel service tank 1 and the fuel efficiency meter 2; 4 is a fuel supply pump; 21
5 is a fuel oil path from the three-way switching valve 3, 5 is a fuel injection pump, 22 is a fuel oil path from the fuel supply pump 4,
23 is a fuel oil passage from the fuel injection pump 5, 6 is a cylinder head, 7 is a fuel injection valve attached to the cylinder head 6, 8 is a piston, 9 is a leak collection tank from the fuel injection valve 7, 24 is a fuel This is a leak fuel oil path from the injection valve 7, and all of these are substantially the same as the conventional fuel consumption measuring device for a diesel engine.
２００は燃料サービスタンク１からの燃料油路
２０を分岐した油路で、これの上方に調圧タンク
１０１が設けられている。３０１は同調圧タンク
１０１の燃料レベルを調整する仕切弁、２０１は
燃料サービスタンク１の圧力を調圧タンク１０１
を介して燃費計２の上部に加える空気パイプ、１
０２は燃料供給口と大気開放口とを設けた燃料供
給タンク、３０２は同燃料供給タンク１０２の燃
料レベルを調整するフロート制御弁で、上記三方
切換弁３を介した油路２１から燃料が供給され
る。２０３はリーク集合タンク９と燃料供給タン
ク１０２とを連通する燃料回収油路である。 Reference numeral 200 denotes an oil passage branching off from the fuel oil passage 20 from the fuel service tank 1, and a pressure regulating tank 101 is provided above this. 301 is a gate valve that adjusts the fuel level of the synchronized pressure tank 101; 201 is a gate valve that adjusts the pressure of the fuel service tank 1 to the pressure adjustment tank 101;
Air pipe, 1 to add to the top of fuel consumption meter 2 through
02 is a fuel supply tank provided with a fuel supply port and an atmosphere opening port; 302 is a float control valve that adjusts the fuel level in the fuel supply tank 102; fuel is supplied from the oil passage 21 via the three-way switching valve 3; be done. 203 is a fuel recovery oil passage that communicates the leak collection tank 9 and the fuel supply tank 102.
上記構成の場合の作用、効果について述べる。 The functions and effects of the above configuration will be described.
機関が作動を始め、燃料がシリンダ内に噴射さ
れるようになると、燃料は燃料供給タンク１０２
から燃料油路２１、燃料供給ポンプ４、燃料油路
２２、燃料噴射ポンプ５、燃料油路２３を経て燃
料噴射弁７よりシリンダ内に噴射される。 When the engine starts operating and fuel is injected into the cylinders, the fuel is transferred to the fuel supply tank 102.
The fuel is then injected into the cylinder from the fuel injection valve 7 via the fuel oil passage 21, fuel supply pump 4, fuel oil passage 22, fuel injection pump 5, and fuel oil passage 23.
一方燃料噴射弁７からのリーク燃料はリーク燃
料油路２４を経てリーク集合タンク９に集めら
れ、燃料供給タンク１０２と連通した燃料回収油
路２０３から燃料供給タンク１０２に戻され、シ
リンダ内に噴射された燃料量だけ燃料供給タンク
１０２の燃料が不足し、燃料レベルが下がり、フ
ロート制御弁３０２が作動し燃料サービスタンク
１から燃料油路２０、三方切換弁３の切換操作に
より、燃料油路２１を経て燃料を供給する。 On the other hand, leaked fuel from the fuel injection valve 7 is collected in the leak collection tank 9 via the leak fuel oil passage 24, returned to the fuel supply tank 102 through the fuel recovery oil passage 203 communicating with the fuel supply tank 102, and injected into the cylinder. When the fuel in the fuel supply tank 102 becomes insufficient by the amount of fuel that has been set, the fuel level decreases, the float control valve 302 is activated, and the fuel oil passage 21 is switched from the fuel service tank 1 to the fuel oil passage 20 and the three-way switching valve 3 is operated. Fuel is supplied through the
燃料消費量を測定する際には、あらかじめ燃料
サービスタンク１からの燃料油路を三方切換弁３
により燃費計２に導入しておき、再度三方切換弁
３を切換えて燃費計２内の燃料だけを流下させ
る。 When measuring fuel consumption, first connect the fuel oil path from the fuel service tank 1 to the three-way selector valve 3.
Then, the three-way switching valve 3 is switched again to allow only the fuel in the fuel efficiency meter 2 to flow down.
このようにすると、燃料供給タンク１０２の液
位が常に一定に保持されていることから、直接シ
リンダ内に噴射された燃料量が正しく計測できる
ようになり、精度ある燃料消費値となる。 In this way, since the liquid level in the fuel supply tank 102 is always kept constant, the amount of fuel directly injected into the cylinder can be accurately measured, resulting in an accurate fuel consumption value.
なお、燃料サービスタンク１と燃貴計２の油路
の切換え時に生じる圧力差によつて発生する誤差
を補正するため、燃料油路２０から分岐した油路
２００、調圧タンク１０１、空気パイプ２０１を
経て燃費計２の上部に燃料サービスタンク１の圧
力を加えてフロート制御弁３０２の作動を円滑に
し、さらに計測精度向上を計つている。 In addition, in order to correct the error caused by the pressure difference that occurs when switching the oil path between the fuel service tank 1 and the fuel gauge 2, an oil path 200 branched from the fuel oil path 20, a pressure regulating tank 101, and an air pipe 201 are installed. The pressure of the fuel service tank 1 is then applied to the upper part of the fuel consumption meter 2 to smooth the operation of the float control valve 302 and further improve measurement accuracy.
第１図は従来の燃料消費量計測装置を示す説明
図、第２図は本発明による１実施例の装置を示す
説明図である。 １……燃料サービスタンク、２……ビユーレツ
ト式燃料消費量計、３……三方切換弁、５……燃
料噴射ポンプ、７……燃料噴射弁、９……リーク
集合タンク、１０１……調圧タンク、１０２……
燃料供給タンク、３０２……フロート制御弁。 FIG. 1 is an explanatory diagram showing a conventional fuel consumption measuring device, and FIG. 2 is an explanatory diagram showing an embodiment of the device according to the present invention. DESCRIPTION OF SYMBOLS 1... Fuel service tank, 2... Biuret type fuel consumption meter, 3... Three-way switching valve, 5... Fuel injection pump, 7... Fuel injection valve, 9... Leak collecting tank, 101... Pressure regulation Tank, 102...
Fuel supply tank, 302...Float control valve.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165382AJPS5790114A (en) | 1980-11-26 | 1980-11-26 | Fuel consumption measuring apparatus |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165382AJPS5790114A (en) | 1980-11-26 | 1980-11-26 | Fuel consumption measuring apparatus |
| Publication Number | Publication Date |
|---|---|
| JPS5790114A JPS5790114A (en) | 1982-06-04 |
| JPS625287B2true JPS625287B2 (en) | 1987-02-04 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55165382AGrantedJPS5790114A (en) | 1980-11-26 | 1980-11-26 | Fuel consumption measuring apparatus |
| Country | Link |
|---|---|
| JP (1) | JPS5790114A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04186500A (en)* | 1990-11-21 | 1992-07-03 | Tokimec Inc | Alarm device for working machine |
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100751208B1 (en)* | 2001-09-21 | 2007-08-22 | 주식회사 포스코 | Leak Water Treatment System of High Pressure Hand Pump Using Negative Pressure |
| EP2420178B1 (en) | 2009-11-06 | 2013-07-24 | Olympus Medical Systems Corp. | Endoscope |
| CN102627150B (en)* | 2012-04-28 | 2015-01-21 | 中国南方航空工业(集团)有限公司 | Automatic control oil tank |
| CN105181086B (en)* | 2015-08-28 | 2018-08-03 | 惠州华阳通用电子有限公司 | A kind of automobile oil mass detection method and device |
| CN114199582B (en)* | 2021-12-09 | 2024-07-26 | 中国船舶集团有限公司第七一一研究所 | System and method for testing fuel consumption rate of common rail engine on line |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04186500A (en)* | 1990-11-21 | 1992-07-03 | Tokimec Inc | Alarm device for working machine |
| Publication number | Publication date |
|---|---|
| JPS5790114A (en) | 1982-06-04 |
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