Separate oiling type two cycle engine

Details Separate oiling type two cycle engine Separate oiling type two cycle engine

1996-12-02

1997-12-30

McMahon, Marguerite

Internal-combustion engines

Two-cycle

Rear compression

F01M 3300

Patent

active

057018561

ABSTRACT:
A separate oiling type two cycle engine having a diaphragm type float-less carburetor including a metering chamber and a needle valve comprises a fuel reservoir for reserving fuel, a fuel supply port provided at the fuel reservoir for supplying fuel into the fuel reservoir, a fuel passage for connecting the fuel reservoir with the needle valve, a venturi provided immediately upstream of the needle valve, an oil discharge port provided adjacent to the inlet of the venturi for discharging lubricating oil therethrough so as to mix lubricating oil with fuel, and a fuel return port provided at the higher position than the fuel supply port for returning fuel to a fuel tank. Since lubricating oil is supplied to almost all major components of the carburetor, carburetor components such as a choke valve, a throttle valve, fuel passages, jets, metering needles, nozzles and the like can be prevented from being corroded, rusted or clogged by salt water contained in fuel.

REFERENCES:
patent: Re32577 (1988-01-01), Dubois
patent: 4743171 (1988-05-01), Mahoney
patent: 4928390 (1990-05-01), Gassen et al.
patent: 5024190 (1991-06-01), Kameyama
patent: 5036822 (1991-08-01), Kojima
patent: 5555858 (1996-09-01), Katoh

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