Internal-combustion-engine ignition device

Details Internal-combustion-engine ignition device Internal-combustion-engine ignition device

1994-07-12

1995-08-01

Wolfe, Willis R.

Internal-combustion engines

High tension ignition system

Safety device

123634, 731173, 324399, F02P 1712, G01M 1500

Patent

active

054372593

ABSTRACT:
An internal-combustion-engine ignition device in which such components as the ion-current-detection unit are provided integrally with other ignition-device components to realize a simplified structure, thereby helping to attain a reduction in cost and an improvement in terms of layout and reliability, the internal-combustion-engine ignition device including: a distributor cap having a central electrode connected to an ignition coil, a plurality of peripheral electrodes respectively connected to the ignition plugs of cylinders and adapted to be selectively connected to the central electrode, and diodes each connected at one end to the peripheral electrodes and at the other end to the central electrode, the distributor cap having openings lodging the diodes for detecting an ion current generated upon combustion of air-fuel mixture inside the cylinders, caused by ignition of the ignition plugs. An ion-current-detection unit may be arranged integrally with the distributor cap, distributor housing, ignition coil, or engine-turning-angle detecting device.

REFERENCES:
patent: 5144936 (1992-09-01), Murata et al.
patent: 5178001 (1993-01-01), Ikeuchi et al.
patent: 5180984 (1993-01-01), Murata et al.
patent: 5230240 (1993-07-01), Ohsawa et al.

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