JPS6057778U

JPS6057778U - Fuel injection timing detection device

Info

Publication number: JPS6057778U
Application number: JP14884383U
Authority: JP
Inventors: 智憲大家; 英弥菊地; 横川　孝之
Original assignee: 株式会社ボッシュオートモーティブ　システム
Priority date: 1983-09-28
Filing date: 1983-09-28
Publication date: 1985-04-22
Also published as: JPH0117649Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案による燃料噴射時期検出装置の構成を示
すブロック図、第２図ａ１第２図すは第１図に示す装置
の各部の信号の波形−を示す信号波形図、第３図は第１
図に示す装置のタイミングプレートの正面図、第４図は
噴射進角の時間的変化を噴射量をパラメータにとって示
した特性図である。１・・・燃料噴射時期検出装置、２・・・ディーゼル機
関、３・・・燃料噴射ポンプ、４・・・上死点センサ、
５・・・クランク軸、９・・・演算回路、１０・・・被
駆動軸、１１・・・噴射タイミングセンサ、１２・・・
タイミングプレート、１２ａ乃至１２ｈ・・・コグ、１
３・・・電磁ピックアップコイル、Ｓ工・・・上死点信
号、Ｓ２・・・噴射タイミング信号。Fig. 1 is a block diagram showing the configuration of the fuel injection timing detection device according to the present invention, Fig. 2 a1 is a signal waveform diagram showing signal waveforms of each part of the device shown in Fig. 1, Fig. 3 is the first
FIG. 4, which is a front view of the timing plate of the device shown in the figure, is a characteristic diagram showing temporal changes in the injection advance angle using the injection amount as a parameter. DESCRIPTION OF SYMBOLS 1...Fuel injection timing detection device, 2...Diesel engine, 3...Fuel injection pump, 4...Top dead center sensor,
5... Crankshaft, 9... Arithmetic circuit, 10... Driven shaft, 11... Injection timing sensor, 12...
Timing plate, 12a to 12h...cog, 1
3...Electromagnetic pickup coil, S work...Top dead center signal, S2...Injection timing signal.

Claims

[Scope of utility model registration request]

(1) a first means for generating a first pulse train signal consisting of pulses indicating a predetermined reference timing of the internal combustion engine; and a second means consisting of pulses associated with the fuel injection start timing of a fuel injection pump that injects fuel into the internal combustion engine; A fuel injection timing detection device comprising: second means for generating a pulse train signal; and calculation means for calculating the injection timing based on a phase difference between the first pulse train signal and the second pulse train signal, The means includes a timing plate fixed to the driven shaft of the fuel injection pump and provided with a cog on the outer periphery, and arranged close to the timing plate so that the cog sequentially approaches and separates as the timing plate rotates. and an electromagnetic pickup coil, the cog being disposed to face the electromagnetic pickup coil at static injection start timing of the fuel injection pump.