Turbocharger for two-cycle engines and method of operation there

Details Turbocharger for two-cycle engines and method of operation there Turbocharger for two-cycle engines and method of operation there

1985-02-05

1986-07-15

Koczo, Michael

Power plants

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

With supercharging means for engine

184 611, 184 626, F02B 3700

Patent

active

045998620

ABSTRACT:
A turbocharger particularly adapted for use with two-cycle engines and including provision for lubrication at both high and low speeds as well as automatic enriching of the fuel mixture during turbo boost. The shaft is mounted within a housing on a pair of ball bearings. A seal is provided between the exhaust-driven turbine and the adjacent bearing to prevent exhaust gases from entering. A conduit is provided communicating between the other bearing and an intake portion of the compressor. A first hose is connected to draw oil mist from the crankcase into the housing adjacent the bearing at the exhaust turbine end whereby the oil mist is drawn through the bearings and into the compressor to provide lubrication at least at low engine RPM. Additionally, a hose is provided communicating between the same point of entry as the oil mist and a source of fuel/oil mixture under pressure related to the intake manifold pressure such that at higher RPM and under boost pressures, a fuel/oil mixture is drawn through the bearings and into the compressor to lubricate and cool the bearings as well as provide a source of enriching fuel to the pressurized airstream entering the air/fuel mixture of the engine.

REFERENCES:
patent: 2201693 (1940-05-01), Heess et al.
patent: 2227267 (1940-12-01), Lozivit
patent: 2740394 (1956-04-01), Judson et al.
patent: 2784551 (1957-03-01), Karlby et al.
patent: 3102332 (1963-09-01), Bozzola
patent: 3200580 (1965-08-01), Millar
patent: 3903854 (1975-09-01), Shelton
patent: 4171611 (1979-10-01), Hueller
patent: 4320724 (1982-03-01), Takada et al.
patent: 4414929 (1983-11-01), Sakurai

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