Pressure sensitive control of input pressure to transmission vac

Details Pressure sensitive control of input pressure to transmission vac Pressure sensitive control of input pressure to transmission vac

1977-07-20

1979-03-06

Chandler, Lance W.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

123119CE, B60K 4118, F02B 3300

Patent

active

041424271

ABSTRACT:
An accessory is provided for a vehicle having a transmission vacuum modulator and an engine equipped with a supercharging device such as a turbocharger that temporarily boosts intake manifold pressure above atmospheric pressure. The accessory normally provides a communication path for use in coupling a manifold port to a vacuum modulator port so that variations in intake manifold pressure serve as an input signal to the vacuum modulator. The accessory provides for comparing intake manifold pressure with a reference pressure, and, when the manifold pressure exceeds the reference pressure, the communication path is interrupted.

REFERENCES:
patent: 2556190 (1951-06-01), Jorgensen et al.
patent: 2589788 (1952-03-01), Fell
patent: 3106104 (1963-10-01), Harry
patent: 3295388 (1967-01-01), Groves
patent: 3436989 (1969-04-01), Krieg et al.
patent: 3566718 (1971-03-01), Wightman
patent: 3827315 (1974-08-01), Lupo

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