Lubricating system in a 4-cycle engine

Details Lubricating system in a 4-cycle engine Lubricating system in a 4-cycle engine

1996-12-12

1999-09-07

Kwon, John

Internal-combustion engines

Lubricators

Crankcase, pressure control

1231853, 184 111, F01M 100

Patent

active

059470755

ABSTRACT:
An oil reservoir chamber, a crank chamber and a valve-operating chamber are provided in an engine body. The oil reservoir chamber and the crank chamber are in communication with each other through a through-hole, and the crank chamber and the valve-operating chamber are in communication with the each other through a one-way valve which is opened upon rising of the pressure in the crank chamber. The valve-operating chamber and the oil reservoir chamber are in communication with each other through an orifice. By utilizing a pressure pulsation in the crank chamber, an oil mist produced in the oil reservoir chamber is circulated from the oil reservoir chamber to the crank chamber, the valve-operating chamber and the oil reservoir chamber. Thus, in any operational attitude of an engine, the lubricating oil can be circulated without use of special oil pump.

REFERENCES:
patent: 4766859 (1988-08-01), Miyaki et al.
patent: 4955335 (1990-09-01), Jingu et al.
patent: 5031591 (1991-07-01), Shinoda et al.
patent: 5243937 (1993-09-01), Imagawa
patent: 5588408 (1996-12-01), Kurihara
patent: 5765438 (1998-06-01), Chang

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