Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1982-05-05
1983-06-21
Cox, Ronald B.
Internal-combustion engines
Charge forming device
Fuel injection system
123480, 123493, F02B 300
Patent
active
043889069
ABSTRACT:
A method for controlling an internal combustion engine with a fuel injection valve fitted to its intake manifold. Repeatedly a first quantity representing the desired amount of fuel to be supplied to the combustion chambers in the next fuel injection pulse, a second quantity representing the proportion of fuel in one pulse which will adhere to the walls of the intake system, and a third quantity representing the proportion of fuel adhering to these walls which will be sucked off into the combustion chambers between two successive pulses are determined, based upon sensed values of certain operational parameters. Simultaneously, at proper injection time points in the engine's operational cycle, first from the third quantity and a fourth quantity representing the total fuel amount adhering to the walls a fifth quantity representing the actual fuel amount sucked off from the walls between two successive pulses is determined; then from the first, second, and fifth quantities a sixth quantity representing the actual fuel amount to be injected in the next pulse is determined; then from the sixth and second quantities a seventh quantity representing the actual amount of fuel from the next pulse that will adhere to the walls is determined; next the fourth quantity is updated by adding the seventh and subtracting the fifth quantity, and next the fuel injection valve is opened for a time corresponding to the sixth quantity. A device is also explained, incorporating an electronic computer, which practices this method.
REFERENCES:
patent: 4086884 (1978-05-01), Moon
patent: 4245605 (1981-01-01), Rice
patent: 4266275 (1981-05-01), Marchak
patent: 4327682 (1982-05-01), Harada
patent: 4357923 (1982-11-01), Hideg
Nakatomi Takayoshi
Sugiyama Shin-ichi
Cox Ronald B.
Toyota Jidosha & Kabushiki Kaisha
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