Dual displacement engine control

Details Dual displacement engine control Dual displacement engine control

1978-06-05

1980-01-29

Lazarus, Ira S.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123119A, F02D 1306, F02M 2506

Patent

active

041856074

ABSTRACT:
In a dual displacement internal combustion engine which operates on four cylinders at selected times and eight cylinders at other times, the air induction passage creates a subatmospheric pressure signal which is higher during the four cylinder mode than during the eight cylinder mode. An exhaust gas recirculation control valve is operated from that pressure signal, and a solenoid valve opens a port from the atmosphere to increase the pressure signal when operating on eight cylinders to provide similar operating pressure under both modes of operation.

REFERENCES:
patent: 3270724 (1966-09-01), Dolza
patent: 3800765 (1974-04-01), Thompson
patent: 3880129 (1975-04-01), Hollis, Jr.
patent: 3881456 (1975-05-01), Nohira et al.
patent: 3896777 (1975-07-01), Masaki et al.
patent: 4027638 (1977-06-01), Moriya et al.
patent: 4073202 (1978-02-01), Aoyama et al.
patent: 4090482 (1978-05-01), Yoshida
patent: 4116178 (1978-09-01), Saito
Automotive Engineering, vol. 85, No. 5, May 1977, "A New Approach to Variable Displacement", pp. 30-34.

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