System and method for automatically controlling vehicle speed to

Details System and method for automatically controlling vehicle speed to System and method for automatically controlling vehicle speed to

1988-10-27

1990-10-16

Black, Thomas G.

Boots, shoes, and leggings

180179, 123352, B60K 3100

Patent

active

049640488

ABSTRACT:
A system and method for automatically controlling a vehicle speed to a desired cruise speed are disclosed in which when at least one of conditions that any one of command signals from corresponding operation command switches is outputted and that a microcomputer of the automatic cruise speed controlling system normally operates and outputs control command signals indicating that corresponding one of control valves is energized is satisfied, the power supply to the control valves is enabled. On the contrary, when at least one of conditions that none of the command signals from the corresponding command switches is outputted and that the microcomputer erroneously outputs control command signals indicating that the corresponding one of the control valves is energized is satisfied, the power supply to the control valves is disabled. The control valves cause air pressure in a chamber defined by a diaphragm to be adjusted, the diaphragm being linked to an engine throttle valve, so that an opening angle of the throttle valve is adjusted to control the vehicle speed.

REFERENCES:
patent: 4434469 (1984-02-01), Suzuki et al.
patent: 4479184 (1984-10-01), Nakano
patent: 4484279 (1984-11-01), Muto
patent: 4539642 (1985-09-01), Mizuno et al.
patent: 4540060 (1985-09-01), Kawata et al.
patent: 4553621 (1985-11-01), Hyodo et al.
patent: 4646861 (1987-03-01), Kawata et al.
patent: 4797826 (1989-01-01), Onogi et al.

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