JPS63123771U

JPS63123771U -

Info

Publication number: JPS63123771U
Application number: JP1534387U
Authority: JP
Priority date: 1987-02-04
Filing date: 1987-02-04
Publication date: 1988-08-11

Description

[Brief explanation of the drawing]

第１図はこの考案の概念構成図、第２図はこの
考案の第１実施例のブロツク構成図、第３図ない
し第５図はこの実施例の点火制御の内容を示す流
れ図である。第６図はこの実施例の抵抗両端間電
圧Ｖ_１と絶縁抵抗値Ｒとの関係を示す線図、第７
図は通常時間ＴＯＮと点火コイルの出力エネルギ
ーとの関係を示す図、第８図は絶縁抵抗値Ｒに対
する通電時間係数ＫＯＮの関係を示す線図である
。第９図はこの実施例の作用を説明する波形図で
ある。第１０図はこの考案の第２実施例のブロツ
ク構成図、第１１図はこの実施例の噴射パルス幅
演算の内容を示す流れ図である。第１２図は従来
例のブロツク構成図、第１３図は同じく従来例の
作用を説明する波形図、第１４図、第１５図はそ
れぞれ電源電圧ＶＢと機関回転速度Ｎに対するＯ
Ｎデユーテイの関係を示す線図である。１……クランク角センサ、２……空気量センサ
、５……点火装置、７……点火コイル、６……パ
ワトランジスタ、９……点火プラグ、１０……バ
ツテリ、１１……点火時期演算手段、１２……通
電時間演算手段、１３……点火信号出力手段、１
４……絶縁抵抗値測定手段、１５……通電時間補
正手段、２１……点火装置、２２……絶縁抵抗値
測定手段、２３……測定用抵抗、２４……リレー
、２５……定電圧源、２６……測定回路、２７…
…スイツチング回路、３０……コントロールユニ
ツト、３１……点火制御回路、７２……噴射弁、
７３……コントロールユニツト。 FIG. 1 is a conceptual block diagram of this invention, FIG. 2 is a block diagram of a first embodiment of this invention, and FIGS. 3 to 5 are flowcharts showing the contents of ignition control in this embodiment. FIG. 6 is a diagram showing the relationship between the voltage V ₁ across the resistor and the insulation resistance value R in this embodiment.
This figure is a diagram showing the relationship between the normal time TON and the output energy of the ignition coil, and FIG. 8 is a diagram showing the relationship between the energization time coefficient KON and the insulation resistance value R. FIG. 9 is a waveform diagram illustrating the operation of this embodiment. FIG. 10 is a block diagram of a second embodiment of this invention, and FIG. 11 is a flowchart showing the details of the injection pulse width calculation in this embodiment. FIG. 12 is a block configuration diagram of the conventional example, FIG. 13 is a waveform diagram explaining the operation of the conventional example, and FIGS.
FIG. 3 is a diagram showing the relationship between N duties. 1... Crank angle sensor, 2... Air amount sensor, 5... Ignition device, 7... Ignition coil, 6... Power transistor, 9... Spark plug, 10... Battery, 11... Ignition timing calculation means , 12... Current application time calculation means, 13... Ignition signal output means, 1
4... Insulation resistance value measuring means, 15... Energization time correction means, 21... Ignition device, 22... Insulation resistance value measuring means, 23... Measuring resistor, 24... Relay, 25... Constant voltage source , 26... measurement circuit, 27...
...Switching circuit, 30...Control unit, 31...Ignition control circuit, 72...Injection valve,
73...Control unit.

Claims

[Scope of utility model registration request]

means for calculating ignition timing according to operating conditions;
Similarly, an internal combustion engine is provided with means for calculating the energization time to the ignition coil according to operating conditions, means for outputting an ignition signal based on these calculated values, and an ignition device for receiving the ignition signal and igniting a spark. An ignition control device for an internal combustion engine, comprising means for measuring an insulation resistance value of a spark plug, and means for correcting the energization time to shorten as the insulation resistance value decreases according to the measured insulation resistance value. ignition control device.