Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1982-06-07
1984-05-15
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
123418, F02P 508, F02P 504, F02B 304
Patent
active
044481713
ABSTRACT:
In an optimum control for an internal combustion engine, a engine is operated by dithering the value of a selected one of engine operating control variables from a value of the selected control variable which is obtained by calculation in accordance with detected values of operating parameters of the engine, and a direction of improving either one of a fuel consumption rate and an output of the engine is decided on the basis of a detected change of an engine operating condition, thereby correcting the value of the selected control variable. In the optimum control, the time period for detecting a change of an engine speed within the time period for effecting the dithering is increased or decreased as the engine speed increases or decreases, respectively. Thus, this optimum control makes it possible to perform accurate control with a reduced dither quantity and a shorter dither period than previously.
REFERENCES:
patent: 4026251 (1977-05-01), Schweitzer et al.
patent: 4092955 (1978-06-01), Reddy
patent: 4258684 (1981-03-01), Schira
patent: 4343278 (1982-08-01), Asano
patent: 4373487 (1983-02-01), Komurosaki et al.
patent: 4374510 (1983-02-01), Komurosaki et al.
patent: 4379333 (1983-04-01), Ninomiya et al.
patent: 4380800 (1983-04-01), Wilkenson
Ninomiya Masakazu
Suzuki Atsushi
Nelli Raymond A.
Nippondenso Co. Ltd.
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