JPS6393475U

JPS6393475U -

Info

Publication number: JPS6393475U
Application number: JP19022386U
Authority: JP
Priority date: 1986-12-10
Filing date: 1986-12-10
Publication date: 1988-06-16

Description

[Brief explanation of the drawing]

第１図は本考案の電子点火時期制御装置の基本
構成を例示するブロツク図、第２図は本考案一実
施例の電子点火時期制御装置を搭載した車両のエ
ンジン１の周辺を示す概略構成図、第３図はその
電子制御装置（ＥＣＵ）３０の構成を示すブロツ
ク図、第４図はＥＣＵ３０が行なう「点火時期演
算ルーチン」を示すフローチヤート、第５図は第
２実施例の電子点火時期制御装置が行なう「点火
時期演算ルーチン」を示すフローチヤート、第６
図はその固定点火と演算点火との切換えタイミン
グを示す説明図、第７図は第３実施例の電子点火
時期制御装置が行なう「点火時期演算ルーチン」
を示すフローチヤート、第８図はアイドル運転時
においてのエンジン負荷に対する最適点火時期θ
を示すグラフ、である。１……エンジン、３……点火プラグ、７……Ｉ
ＳＣＶ、１１……スロツトルポジシヨンセンサ、
１３……バキユームセンサ、１４……イグナイタ
、１６……回転速度センサ、３０……電子制御装
置（ＥＣＵ）。 FIG. 1 is a block diagram illustrating the basic configuration of an electronic ignition timing control device according to the present invention, and FIG. 2 is a schematic configuration diagram showing the vicinity of an engine 1 of a vehicle equipped with an electronic ignition timing control device according to an embodiment of the present invention. , FIG. 3 is a block diagram showing the configuration of the electronic control unit (ECU) 30, FIG. 4 is a flowchart showing the "ignition timing calculation routine" performed by the ECU 30, and FIG. 5 is the electronic ignition timing of the second embodiment. Flowchart showing the “ignition timing calculation routine” performed by the control device, No. 6
The figure is an explanatory diagram showing the switching timing between fixed ignition and calculated ignition, and FIG. 7 is the "ignition timing calculation routine" performed by the electronic ignition timing control device of the third embodiment.
The flowchart shown in Fig. 8 is the optimum ignition timing θ for the engine load during idling operation.
This is a graph showing. 1...Engine, 3...Spark plug, 7...I
SCV, 11...throttle position sensor,
13... Vacuum sensor, 14... Igniter, 16... Rotation speed sensor, 30... Electronic control unit (ECU).

Claims

[Scope of Claim for Utility Model Registration] A rotational speed detection means for detecting the rotational speed of an internal combustion engine, a load detection means for detecting a load on the internal combustion engine, and ignition of the internal combustion engine based on the detected rotational speed and load. a calculating means for calculating timing; and an idle detecting means for detecting an idling operating state. When the idle detecting means detects that the ignition timing is in the idle state, a predetermined fixed value is used as the ignition timing; In an electronic ignition timing control device, the electronic ignition timing control device includes: an ignition timing setting means that uses the ignition timing by the calculation means when it is detected that the ignition timing is not in the idle state; An electronic ignition timing control device characterized in that even if the load detected by the load detection means is equal to or greater than a predetermined value, the ignition timing determined by the calculation means is used as the ignition timing.