Motor vehicles – With means responsive to speed of vehicle for maintaining... – Including fluid pressure actuated servomechanism
Patent
1981-04-27
1984-05-08
Peters, Jr., Joseph F.
Motor vehicles
With means responsive to speed of vehicle for maintaining...
Including fluid pressure actuated servomechanism
60598, 123383, 123559, F02B 6700, B60K 3100
Patent
active
044469403
ABSTRACT:
A speed control system of a motor vehicle for constantly maintaining a selected speed having an internal combustion engine which includes a turbocharger having a compressor wheel and electronically controlled fuel injectors which includes a vacuum actuator provided with a vacuum chamber having a first inlet port for inducting vacuum pressure, a second inlet port for inducting atmospheric air and further including a throttle valve and diaphragm which controls the throttle valve in accordance with vacuum pressure in the vacuum chamber, a member for generating a signal in accordance with the difference between the selected speed of the motor vehicle and actual speed of the motor vehicle, a modulating valve for controlling the first inlet port and the second inlet port by the signal delivered from the signal member to thereby modulate the vacuum pressure within the vacuum chamber, an intake manifold, a first passage communicated with the first inlet port and the intake manifold, a second passage communicated with the first inlet port and an inlet end of the compressor wheel of the turbocharger, a first check valve disposed in the first passage so as to induct vacuum pressure to the first inlet port from the intake manifold and a second check valve disposed in the second passage to induct the vacuum pressure to the first inlet port from the inlet end of the compressor wheel.
REFERENCES:
patent: 2858821 (1958-11-01), Isley
patent: 3049865 (1962-08-01), Drayer
patent: 3418986 (1968-12-01), Scherenberg
patent: 3541784 (1970-11-01), Haase
patent: 4202424 (1980-05-01), Sakakibara et al.
patent: 4227372 (1980-10-01), Kakimoto et al.
patent: 4232757 (1980-11-01), Ochiai et al.
Aisin Seiki Kabushiki Kaisha
Peters Jr. Joseph F.
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