Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1983-10-26
1985-07-09
Lall, Parshotam S.
Internal-combustion engines
Charge forming device
Fuel injection system
123436, F02P 506
Patent
active
045275238
ABSTRACT:
Fluctuations of engine speed in the frequency range from 2 to 8 Hz, which produce "bucking" behavior of a motor vehicle, are detected by passing engine speed signals through a filter which reduces and delays the oscillations and a difference signal is then produced between the original and the processed speed signal in order to derive an alternating signal in the form of a square wave indicating the sign of a correction to be made to engine ignition timing for counteracting the bucking oscillations of engine speed. The square wave determines the sign of an anti-bucking ignition timing correction factor, of which the absolute value may be constant or may vary according to the sign of the correction and, if desired, also in accordance with engine operation parameters.
REFERENCES:
patent: 4178891 (1979-12-01), Latsch et al.
patent: 4250858 (1981-02-01), Jeenicke et al.
patent: 4329960 (1982-05-01), Woodhouse et al.
patent: 4337647 (1982-07-01), Radcliffe et al.
patent: 4345559 (1982-08-01), Kuttner et al.
patent: 4377998 (1983-03-01), Hartel et al.
Daumer Rolf
Feldmann Ekkehard
Person Martin
Wild Ernst
Zechnall Martin
Lall Parshotam S.
Robert & Bosch GmbH
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