Device for detecting faulty firing in an internal-combustion eng

Details Device for detecting faulty firing in an internal-combustion eng Device for detecting faulty firing in an internal-combustion eng

1993-07-26

1995-02-07

Raevis, Robert

Measuring and testing

Vehicle drive train

Rear end

731173, 73 4R, G01M 1500

Patent

active

053867238

ABSTRACT:
In a device for detecting faulty firing in an internal-combustion engine, a combustion-chamber pressure is measured at two crankshaft positions before and after each top dead center for each cylinder. At an ignition top dead center, a pressure differential must be greater than a first limiting value for there to be proper firing. At a charge-change top dead center, the pressure differential must be less than a second limiting value for the pressure measurement to be operating properly.

REFERENCES:
patent: 1960158 (1934-05-01), Lehmann
patent: 4744244 (1988-05-01), Tanaka
patent: 4781059 (1988-11-01), Suzuki et al.
patent: 4834031 (1989-05-01), Katoh et al.
patent: 5127262 (1992-07-01), Demizu et al.

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