Device for controlling charging pressure of a supercharged inter

Details Device for controlling charging pressure of a supercharged inter Device for controlling charging pressure of a supercharged inter

1987-07-14

1989-02-07

Koczo, Michael

Internal-combustion engines

Charge forming device

Supercharger

F02B 3338, F02D 2300

Patent

active

048024562

ABSTRACT:
An engine comprising a mechanically driven charger arranged in the intake passage downstream of the throttle valve. A bypass passage is branched from the intake passage between the throttle valve and the mechanically driven charger and connected to the intake passage downstream of the mechanically driven charger. A relief valve is arranged in the bypass passage to control the maximum charging pressure produced in the intake passage downstream of the mechanically driven charger. The relief valve is controlled so that the maximum charging pressure is increased when the engine is operating at a low or middle speed, and the maximum charging pressure is reduced when the engine is operating at a high speed.

REFERENCES:
patent: 4611568 (1986-09-01), Onaka et al.
patent: 4656992 (1987-04-01), Onaka et al.

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