Fuel cut-off control system in fuel injection internal combustio

Details Fuel cut-off control system in fuel injection internal combustio Fuel cut-off control system in fuel injection internal combustio

1982-09-21

1985-09-03

Gruber, Felix D.

Boots, shoes, and leggings

74866, 123198DB, 123325, 3644241, G05D 2900, F02D 3300, F02B 7512

Patent

active

045396434

ABSTRACT:
A fuel cut-off control can prolong a period of time in which the engine speed is maintained at a range suitable for performing fuel cut-off and shorten a period of time in which the engine speed is in a fuel recovery range to minimize fuel consumption during engine deceleration. In a fuel cut-off control system in a fuel injection internal combustion engine with an automatic transmission, the fuel cut-off control system is responsive to a brake switch signal and an engine speed signal having a value above a fuel recovery threshold to decrease the value of a fuel cut-off threshold to again perform the fuel cut-off even in the normal fuel recovery range. Down shifting of a transmission gear is performed to increase engine speed to a level beyond the fuel cut-off threshold to prolong the fuel cut-off period.

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patent: 4311123 (1982-01-01), Gloeckler et al.
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patent: 4350234 (1982-09-01), Suga et al.
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patent: 4421082 (1983-12-01), Katayose et al.
patent: 4422353 (1983-12-01), Suga et al.
patent: 4437442 (1984-03-01), Yamaguchi
patent: 4449495 (1984-05-01), Fiala
patent: 4473882 (1984-09-01), Suzuki et al.

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