Internal-combustion engines – Charge forming device – Supercharger
Patent
1994-03-17
1995-06-06
Koczo, Michael
Internal-combustion engines
Charge forming device
Supercharger
123561, 417409, F02B 3340
Patent
active
054213100
ABSTRACT:
A hydraulic system for driving a small, compact, relatively low cost, long life and very high speed hydraulic turbine drive. The system maximizes energy conversion efficiency between a combustion engine hydraulic pump and a high speed hydraulic turbine driven supercharger. A venturi system provides a pressure drop permitting lubrication flow for the supercharger bearings and also a substantial hydraulic pump inlet pressure to prevent foaming and cavitation at the pump inlet. A bypass valve permits control of the turbine speed based on engine need rather than engine speed as is the case with prior systems. Embodiments applicable to one stage supercharger and supercharger-turbocharger combinations are described. In a preferred embodiment of the present invention the hydraulic system is used to drive a high speed turbine at a power level in the range of 5 to 20 horsepower with operating speeds of 50,000 to 200,000 RPM. In this particular embodiment the turbine blades are produced at low cost as a part of a thermoplastic turbine wheel and the strength needed for very high centrifugal forces is provided by compressing substantially all of the plastic turbine wheel, except for the blades, within a metal sleeve.
REFERENCES:
patent: 2968914 (1961-01-01), Birmann
patent: 3846983 (1974-11-01), Freedy et al.
patent: 4285200 (1981-08-01), Byrne et al.
patent: 4610235 (1986-09-01), Grunig
patent: 5013214 (1991-05-01), Kapich
patent: 5236305 (1993-08-01), Kapich
patent: 5346364 (1994-09-01), Kapich
Koczo Michael
Ross John R.
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