Apparatus for controlling the speed of an internal combustion en

Details Apparatus for controlling the speed of an internal combustion en Apparatus for controlling the speed of an internal combustion en

1987-06-05

1989-07-25

Lall, Parshotam S.

Boots, shoes, and leggings

123352, 123399, B60L 300

Patent

active

048520110

ABSTRACT:
In a vehicle speed control apparatus for an internal combustion engine vehicle, in which the first amount of fuel supply required for maintaining the vehicle speed at a desired speed and the second amount of fuel supply corresponding to the amount of depression of an accelerator pedal are separately calculated, the apparatus comprises a selector for selecting the larger of the first and second amount of fuel supply to control the fuel adjusting member, and a modifying circuit for modifying the output data showing the first amount of fuel supply to cause it to slowly change, taking into account the value of the second data showing the second amount of fuel supply just before the second amount of fuel supply becomes smaller than the first amount of fuel supply, whereby the vehicle speed is prevented from being rapidly decelerated when the mode of vehicle speed control is changed from that by the second data to that by the first data. With this arrangement, a sudden change in the control data can be prevented and the vehicle speed can be prevented from suddenly changing at the time of changing over between vehicle speed control carried out by the accelerator pedal and that by the automatic vehicle speed controlling device, to obtain smooth control of the vehicle speed.

REFERENCES:
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patent: 4319658 (1982-03-01), Collonia et al.
patent: 4408293 (1983-10-01), Avins
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patent: 4453516 (1984-06-01), Filsinger
patent: 4474155 (1984-10-01), Sagues
patent: 4541052 (1985-09-01), McCulloch

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