Apparatus for controlling pressurized air supply to engines

Details Apparatus for controlling pressurized air supply to engines Apparatus for controlling pressurized air supply to engines

1982-07-19

1984-03-06

Koczo, Michael

Internal-combustion engines

Charge forming device

Supercharger

60611, F02D 2300

Patent

active

044347758

ABSTRACT:
An apparatus for controlling pressurized air supply to an engine has an intake passage connected to the engine at the downstream end thereof. A throttle valve is disposed at a downstream side of the intake passage. A supercharger control valve is disposed at an upstream side of the throttle valve in the intake passage. A supercharger passage containing a supercharger is connected to the intake passage at both upstream and downstream sides of the supercharger control valve. An actuator has an actuating body for dividing the actuator into a first and second pressure chambers. The actuating body is operatively connected to the supercharger control valve to close and open it according to the movement of the actuating body. A compression coil spring is provided in the first pressure chamber for normally pressing the actuating body to open the supercharger control valve. A change-over valve comprises a first pressure-receiving chamber communicating with the first pressure chamber and a second pressure-receiving chamber communicating with the second pressure chamber and the portion of the intake passage between the throttle valve and the supercharger control valve, and a valve body for selectively effecting the communication between the first and second pressure-receiving chambers and between the second pressure-receiving chamber and the portion of the intake passage between the throttle valve and the supercharger valve. A pressure introducing passage communicates with the first pressure chamber at its one end and to the downstream of the throttle valve in the intake passage at its other end.

REFERENCES:
patent: 2311936 (1943-02-01), Elfes et al.
patent: 2356379 (1944-08-01), Caris et al.
patent: 2559859 (1951-07-01), Elliot et al.
patent: 2578028 (1951-12-01), Udale
patent: 4222240 (1980-09-01), Castellano
patent: 4350135 (1982-09-01), Casey et al.

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