JPS6136518U

JPS6136518U - Reference crank angle detection device

Info

Publication number: JPS6136518U
Application number: JP12241884U
Authority: JP
Inventors: 達郎森田; 佳久川村
Original assignee: 日産自動車株式会社
Priority date: 1984-08-09
Filing date: 1984-08-09
Publication date: 1986-03-06

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図は本考案の全体構成図、第２〜７図は本考案の第
１実施例を示す図であり、第２図はその概略構成図、第
３図はその基準クランク角演算のメインルーチンを示す
フローチャート、第４図はそのＮカウンタをリセットす
るサブルーチンを示すフローチャート、第５図はそのＮ
カウンタおよびＰＯＳカウンタを制御するサブルーチン
を示すフローチャート、第６図はその最新基準クランク
角を演算するサブルーチンを示すフローチャート、第７
図ａ ”− ｅは各サブルーチンの作用を説明するため
のタイシングチャート、第８，９図は本考案の第２実施
例を示す図であり、第８図はその回路構成図、第９図は
その演算回路の詳細な回路図、第１０．１１図は本考案
の第３実施例を示す図であり、第１０図はその概略構成
図、第１１図はその基準クランク角演算のメインルーチ
ンを示すフローチャート、第１２．１３図は本考案の第
４実施例を示す図であり、第１２図はその概略構成図、
第１３図はその基準クランク角演算のメインルーチンを
示すフローチャート、第１４．１５図は従来のクランク
角センサを示す図であり、第１４図ａ，ｂはその出力
信号のタイミングチャート、第１５図はその調整方法を
示す図である。１１・・・・・・エンジン、２４，６４．７４・・・・
・・気体増量手段、２５，２５ａ〜２−５ｄ・・・・・
・圧カセンサ−（圧力検出手段）、２６・・・・・・ク
ランク角センサ（基準信号発生手段）、２７・・・・・
・コントロールユニット（演算手段、燃焼停止検出手段
）、４１・・・・・・フユエルカット検出回路（燃焼停
止検出手段）、４２・・・・・・演算手段。Fig. 1 is an overall block diagram of the present invention, Figs. 2 to 7 are diagrams showing the first embodiment of the present invention, Fig. 2 is a schematic block diagram thereof, and Fig. 3 is the main part of the reference crank angle calculation. A flowchart showing the routine, FIG. 4 is a flowchart showing the subroutine for resetting the N counter, and FIG.
FIG. 6 is a flowchart showing a subroutine for controlling the counter and POS counter. FIG. 6 is a flowchart showing a subroutine for calculating the latest reference crank angle.
Figures a"-e are timing charts for explaining the action of each subroutine, Figures 8 and 9 are diagrams showing the second embodiment of the present invention, Figure 8 is its circuit configuration diagram, and Figure 9 is a diagram showing the second embodiment of the present invention. 10.11 is a diagram showing the third embodiment of the present invention, FIG. 10 is a schematic configuration diagram thereof, and FIG. 11 is a main routine for calculating the reference crank angle. 12 and 13 are diagrams showing the fourth embodiment of the present invention, and FIG. 12 is a schematic configuration diagram thereof,
Fig. 13 is a flowchart showing the main routine for calculating the reference crank angle, Figs. 14 and 15 are diagrams showing a conventional crank angle sensor, Figs. 14a and b are timing charts of its output signals, and Fig. 15. is a diagram showing the adjustment method. 11...Engine, 24,64.74...
...Gas increase means, 25, 25a to 2-5d...
・Pressure sensor (pressure detection means), 26...Crank angle sensor (reference signal generation means), 27...
- Control unit (computation means, combustion stop detection means), 41... Fuel cut detection circuit (combustion stop detection means), 42... Computation means.

Claims

[Claims for Utility Model Registration] (a) Reference signal generation means for outputting a reference signal corresponding to a predetermined piston position; (b) Pressure detection means for detecting pressure within the cylinder; (C) When the engine is rotating. (d) a gas increase stage for increasing the amount of gas flowing into the cylinder based on an increase signal; (e) a combustion stop detection means for detecting a predetermined combustion stop state when the cylinder is in a predetermined combustion stop state; A reference crank angle characterized by comprising: a calculation means that outputs the increase signal when in a stopped state and calculates a reference crank angle from the output timing of the reference signal to the timing at which the pressure inside the cylinder reaches maximum pressure. Detection device.