Minute pressure control system

Details Minute pressure control system Minute pressure control system

1976-09-09

1978-07-04

Cohan, Alan

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

261 72R, 261DIG67, 13762415, 1376242, F02M 500

Patent

active

040982475

ABSTRACT:
A minute pressure control system which combines constant positive pressure and constant negative pressure together to control pressure in a controllable object is disclosed. An electronic control circuit generates a train of pulses modulated in accordance with a preset value. The two constant pressures, either one thereof being switched on and off in response to the pulses, are applied to a surge tank to be combined together therein. The surge tank absorbs pressure pulsation resulting from on-off switching application of the pressure and controls the pressure in the controllable object such as a half-closed chamber to the value preset by the electronic control circuit.

REFERENCES:
patent: 3921612 (1975-11-01), Aono

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