Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1978-12-04
1981-03-10
Koczo, Jr., Michael
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
251 615, 123440, F02B 3700
Patent
active
042546257
ABSTRACT:
The invention relates to super-charged combustion engines in which a compressor is arranged in the engine inlet system and driven by a turbine in the engine exhaust system, a duct is provided for by-passing the turbine to the exhaust outlet, and a valve is provided to control exhaust gas flow through the by-pass duct and turbine. The invention provides exhaust gas pressure transmitting means connected to actuating means incorporated in the valve, said actuating means operating in dependence upon the pressure of the exhaust gas to control its flow through the turbine and the by-pass duct in order to limit the speed of the turbine and the compressor when a predetermined pressure is exceeded, whereby pressure in the engine inlet system decreases with increasing engine speed, at least within an upper r.p.m. range of the engine. The invention realizes an engine in which a higher fuel economy and performance is achieved, compared with known super-charging arrangements, particularly in that the arrangement according to the invention can be controlled to produce a markedly higher torque within the normal operating range of the engine.
REFERENCES:
patent: 2564894 (1951-08-01), Glasgow
patent: 4075849 (1978-02-01), Richardson
Bergstedt Dan
Johansson Anders E. B.
Koczo, Jr. Michael
Saab-Scania AB
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