Engine turbocharger with integral wastegate

Details Engine turbocharger with integral wastegate Engine turbocharger with integral wastegate

1978-03-13

1979-10-23

Koczo, Michael

Pumps

Motor driven

Fluid motor

60602, F02D 2300

Patent

active

041719360

ABSTRACT:
An engine turbocharger includes a bearing housing, which supports a rotor shaft carrying turbine and compressor impellers on opposite ends of the shaft, and enclosed by turbine and compressor housing members secured to the bearing housing and defining therewith fluid inlet and outlet passages for the turbine and compressor. The turbocharger is provided with an integral wastegate including (1) a poppet valve supported by the turbine housing and controlling bypass passages in the housing between the turbine inlet and outlet passages and (2) an actuating piston in the compressor housing exposed through internal passage means to gas pressure in the compressor outlet and engagable with the poppet valve stem so as to urge the valve in an opening direction as a function of compressor outlet pressure. The shaft bearing lubrication and cooling passages are arranged to also lubricate the wastegate valve stem and spring.

REFERENCES:
patent: 1310682 (1919-07-01), Sherbondy
patent: 3089304 (1963-05-01), Bozzola
patent: 3104520 (1963-09-01), Cazier et al.

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