Fuel injection control system for internal combustion engines

Details Fuel injection control system for internal combustion engines Fuel injection control system for internal combustion engines

1995-03-03

1997-05-13

Teska, Kevin J.

Boots, shoes, and leggings

36443104, 364431061, 123480, 123492, 123571, F02D 4104, F02D 4126

Patent

active

056298536

ABSTRACT:
A fuel injection control system for an internal combustion engine comprises an ECU which calculates a direct supply ratio and a carry-off ratio, and detects a predetermined operating condition of the engine in which an increased amount of fuel is to be supplied to the engine. When the predetermined operating condition is detected, a plurality of fuel injection amounts to be sequentially injected by at least one fuel injection valve are calculated based on operating conditions of the engine, the direct supply ratio and the carry-off ratio. Then, an amount of fuel adhering to the intake system of the engine is calculated based on the total sum of the calculated plurality of fuel injection amounts, as well as on the calculated direct supply ratio and the calculated carry-off ratio. At least one of the calculated plurality of fuel injection amounts is corrected based on the calculated amount of fuel adhering to the intake system. Then, at least one fuel injection valve is controlled to sequentially carry out a plurality of fuel injections in one operating cycle of the engine, based on the calculated plurality of fuel injection amounts including the at least one thereof corrected.

REFERENCES:
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patent: 4852538 (1989-08-01), Nagaishi
patent: 4922877 (1990-05-01), Nagaishi
patent: 4987890 (1991-01-01), Nagaishi
patent: 5080071 (1992-01-01), Minamitani et al.
patent: 5215061 (1993-06-01), Ogawa et al.

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