Lubricating oil passage structure for engine

Details Lubricating oil passage structure for engine Lubricating oil passage structure for engine

1998-01-14

1999-03-30

Kwon, John T.

Internal-combustion engines

Lubricators

Crankcase, pressure control

184 65, F01M 100

Patent

active

058875654

ABSTRACT:
An improved lubricating oil passage structure for an engine, which includes: a sub-gallery and a main gallery positioned adjacent to one another in a cylinder block; a head-side oil passage and a journal-side oil passage both being communicated to the main gallery and provided in the cylinder block, in which the head-side oil passage is led to an upper surface of the cylinder block, while the journal-side oil passage is inclined so as be oriented toward a journal portion of a crankshaft; a housing-side oil passage communicated to the journal-side oil passage, the housing-side oil passage being provided in a journal housing section of the cylinder block by the use of a spot facing for a housing bolt, the journal housing section supporting the journal portion; a metal-side oil passage communicated to the housing-side oil passage, the metal-side oil passage being provided in the journal housing section at the rear of a journal metal disposed between the journal portion and the journal housing section; and, a chain adjuster-side oil passage communicated to the metal-side oil passage.

REFERENCES:
patent: 3929117 (1975-12-01), Green et al.
patent: 4538565 (1985-09-01), Hidaka et al.
patent: 4656983 (1987-04-01), Anno
patent: 4922871 (1990-05-01), Batzill
patent: 5133313 (1992-07-01), Inoue et al.
patent: 5653205 (1997-08-01), Ozeki

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