Altitude responsive turbocharger control system

Details Altitude responsive turbocharger control system Altitude responsive turbocharger control system

1982-06-14

1984-09-04

Koczo, Michael

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

F02B 3712

Patent

active

044689284

ABSTRACT:
A turbocharger control system has a waste gate operative to cause engine exhaust gases to bypass the turbocharger to protect the engine when the supercharging pressure exceeds a predetermined pressure level. A pressure modulator is provided to mix pressures derived from points upstream and downstream of a compressor to produce a controlling pressure which is modulated to be of a pressure level between the compressor-upstream and downstream pressures and which is also adjusted as a function of the atmospheric pressure. A waste gate actuator compares the supercharging pressure and the controlling pressure to control the operation of the waste gate. When a motor vehicle equipped with the system is operated at high altitude where the atmospheric pressure is lower than that obtained at a low altitude, the controlling pressure is adjusted to be substantially the same as the controlling pressure obtained at the low altitude, whereby the waste gate is opened only at a predetermined pressure level of the supercharging pressure to assure a good engine operability.

REFERENCES:
patent: 1508707 (1924-09-01), Moss
patent: 2374708 (1945-05-01), Shoults
patent: 2454038 (1948-11-01), Crever
patent: 2476063 (1949-07-01), Ridgley et al.
patent: 3035408 (1962-05-01), Silver

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