JPS63141845U

JPS63141845U -

Info

Publication number: JPS63141845U
Application number: JP3375387U
Authority: JP
Priority date: 1987-03-10
Filing date: 1987-03-10
Publication date: 1988-09-19

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係るデイーゼル
エンジンの燃料制御装置の系統図兼断面図、第２
図は第１図のうち補正装置の部分の系統図兼断面
図、第３図は第１図のうちパイロツト噴射装置の
部分断面図、第４図は第１図の装置の特性図、第
５図は本考案の第２実施例に係るデイーゼルエン
ジンの燃料制御装置の系統図兼断面図、第６図は
第５図の装置のうち補正装置の部分の系統図兼断
面図、第７図は本考案の第３実施例に係る遅延弁
を第２図の装置に適用した場合の補正装置の部分
の系統図兼断面図、第８図は本考案の第３実施例
に係る遅延弁を第５図の装置に適用した場合の補
正装置の部分の系統図兼断面図、第９図は遅延弁
による燃料減量遅延特性図、である。１……機械式ガバナ機構をもつ分配型燃料噴射
ポンプ、４……プランジヤ、７……プランジヤ室
、２０……パイロツト噴射装置、２１……小孔、
２３……アキユムレートピストン、３０……リタ
ーン通路、３１……第２の電磁弁、４０，８０…
…補正装置、４３，８４……プツシユロツド、４
４，８５……テーパ部、４８……スピルリング、
６１……負圧源、６２……定圧弁、６３……第１
の電磁弁、６４……フイルタ、６５……コントロ
ーラ、６６……負荷センサ、６７……速度センサ
、９０……遅延弁。 FIG. 1 is a system diagram and sectional view of a diesel engine fuel control device according to a first embodiment of the present invention;
The figure is a system diagram and sectional view of the correction device part in Figure 1, Figure 3 is a partial sectional view of the pilot injection device in Figure 1, Figure 4 is a characteristic diagram of the device in Figure 1, and Figure 5 is a partial sectional view of the pilot injection device in Figure 1. The figure is a system diagram and sectional view of a fuel control device for a diesel engine according to a second embodiment of the present invention, FIG. 6 is a system diagram and sectional view of the correction device part of the device shown in FIG. 5, and FIG. A system diagram and a sectional view of the correcting device when the delay valve according to the third embodiment of the present invention is applied to the device shown in FIG. 2, and FIG. FIG. 9 is a system diagram and sectional view of the correction device when applied to the device shown in FIG. 5, and FIG. 9 is a fuel reduction delay characteristic diagram due to the delay valve. DESCRIPTION OF SYMBOLS 1... Distributed fuel injection pump with mechanical governor mechanism, 4... Plunger, 7... Plunger chamber, 20... Pilot injection device, 21... Small hole,
23...Accumulation rate piston, 30...Return passage, 31...Second solenoid valve, 40, 80...
...Correction device, 43,84...Push rod, 4
4, 85... Taper part, 48... Spill ring,
61... Negative pressure source, 62... Constant pressure valve, 63... First
solenoid valve, 64...filter, 65...controller, 66...load sensor, 67...speed sensor, 90...delay valve.

Claims

[Claims for Utility Model Registration] (1) A distributed fuel injection device for a diesel engine with a pilot injection device, which is equipped with a correction device that changes the fuel injection amount by changing the position of the spill ring using the tapered part of the push rod. A first solenoid valve for opening and closing the pressure passage is provided in the negative pressure passage to the correction device, and a second solenoid valve is provided in the return passage for leaked fuel of the pilot injection device, and the second solenoid valve The diesel engine is characterized in that when the first valve is closed to stop pilot injection, the first valve is switched to apply pressure to the correction device in the direction of moving the push rod to the side where the amount of fuel injection is reduced. fuel control device. (2) A pressure delay valve is provided in the negative pressure passage to the correction device to delay the reduction correction of the fuel injection amount when the operation of the pilot injection device is stopped. Diesel engine fuel control device.