JPH0345446U

JPH0345446U -

Info

Publication number: JPH0345446U
Application number: JP10662089U
Authority: JP
Priority date: 1989-09-13
Filing date: 1989-09-13
Publication date: 1991-04-26

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す全体構成図、
第２図は同上実施例のメタノール濃度センサの概
略構成図、第３図はメタノール濃度センサのセン
サ出力とメタノール濃度との関係を示す図、第４
図は燃料噴射タイミング特性図、第５図は燃料噴
射量特性図、第６図は点火タイミング特性図、第
７図は点火コイルの一次電流通電時間特性図、第
８図は高負荷時の燃料組成と点火及び燃料噴射の
各タイミング特性との関係図、第９図は高負荷時
のメタノール濃度の異なる場合の噴射タイミング
及び点火タイミングとクランク角位置との関係の
一例を示す図、第１０図は低負荷時の燃料組成と
点火及び燃料噴射の各タイミング特性との関係図
、第１１図は低負荷時のメタノール濃度の異なる
場合の噴射タイミング及び点火タイミングとクラ
ンク角位置との関係の一例を示す図である。１……機関本体、３……燃焼室、４……噴射ノ
ズル、５……点火プラグ、７……燃料噴射ポンプ
、８……ポンプ本体、１０……電子タイマ、１１
……電子ガバナ、２３……回転センサ、２４……
クランク角センサ、２５……負荷センサ、２６…
…噴射ポンプ制御用コントロールユニツト、２７
……点火回路、２８……点火装置制御用コントロ
ールユニツト、３０……メタノール濃度センサ。 FIG. 1 is an overall configuration diagram showing an embodiment of the present invention;
Figure 2 is a schematic configuration diagram of the methanol concentration sensor of the same example as above, Figure 3 is a diagram showing the relationship between the sensor output of the methanol concentration sensor and the methanol concentration, and Figure 4 is a diagram showing the relationship between the sensor output of the methanol concentration sensor and the methanol concentration.
Figure 5 is a fuel injection timing characteristic diagram, Figure 5 is a fuel injection amount characteristic diagram, Figure 6 is an ignition timing characteristic diagram, Figure 7 is a primary current energization time characteristic diagram of the ignition coil, and Figure 8 is a fuel consumption characteristic diagram at high load. A diagram showing the relationship between composition and each timing characteristic of ignition and fuel injection, Figure 9 is a diagram showing an example of the relationship between injection timing and ignition timing and crank angle position when methanol concentration is different at high load, Figure 10 11 is a diagram showing the relationship between the fuel composition and each timing characteristic of ignition and fuel injection at low load, and FIG. 11 is an example of the relationship between injection timing, ignition timing, and crank angle position for different methanol concentrations at low load. FIG. 1... Engine body, 3... Combustion chamber, 4... Injection nozzle, 5... Spark plug, 7... Fuel injection pump, 8... Pump body, 10... Electronic timer, 11
...Electronic governor, 23... Rotation sensor, 24...
Crank angle sensor, 25...Load sensor, 26...
...Control unit for controlling the injection pump, 27
...Ignition circuit, 28...Control unit for controlling the ignition device, 30...Methanol concentration sensor.

Claims

[Scope of utility model registration request]

In a direct injection internal combustion engine configured to control a fuel injection device and an ignition device according to engine operating conditions, an engine operating condition detection means and an alcohol concentration sensor that detects the alcohol concentration in fuel supplied to the fuel injection device are provided. and a control means for controlling at least one of the fuel injection device and the ignition device based on detection signals from the engine operating state detection means and the alcohol concentration sensor. Engine control equipment.