Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1982-05-05
1984-11-13
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123493, F02B 300
Patent
active
044819285
ABSTRACT:
A method for controlling, according to the L-jetronic fuel injection principle, an internal combustion engine with a fuel injection valve fitted to its intake manifold, and an intake air flow meter. Repeatedly a first quantity representing the desired amount of fuel to be provided to the combustion chambers of the engine during the time period between the next two fuel injection pulse time points is determined, based upon sensed values of certain operational parameters including intake air flow, and a second quantity is determined as the time smoothed value of the first quantity. Optionally further the second quantity may be modified according to engine operational parameters. Simultaneously, at proper injection time points in the engine's operational cycle, the fuel injection valve is opened for a time corresponding to a third quantity which is calculated from the second quantity. A device is also explained, incorporating an electronic computer, which practices this method. Thereby, overshooting of the air flow meter is corrected for.
REFERENCES:
patent: 4257377 (1981-03-01), Kinugawa
patent: 4357923 (1982-11-01), Hideg
patent: 4388906 (1983-06-01), Sugiyama
Aoki Keiji
Sugiyama Shin-ichi
Takimoto Toshiyuki
Cox Ronald B.
Toyota Jidosha & Kabushiki Kaisha
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