Valve timing control apparatus for internal combustion engine

Details Valve timing control apparatus for internal combustion engine Valve timing control apparatus for internal combustion engine

1998-09-09

2000-04-11

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, 123198D, F01L 1344

Patent

active

060476745

ABSTRACT:
A valve timing control apparatus for an internal combustion engine includes a variable valve timing control mechanism of a hydraulic type which is provided in a drive force transmission arrangement for transmitting a drive force from a driving shaft to a driven shaft for actuating one of an engine-cylinder inlet valve and an engine-cylinder outlet valve, and which can relatively rotate one of the driving shaft and the driven shaft in a predetermined angular range. A detecting device operates for detecting a condition in which air enters hydraulic working fluid in the variable valve timing control mechanism. A trouble diagnosis device operates for implementing a trouble diagnosis on the variable valve timing control mechanism. An inhibiting device operates for inhibiting the trouble diagnosis implemented by the trouble diagnosis device when the detecting device detects the condition in which air enters hydraulic working fluid in the variable valve timing control mechanism.

REFERENCES:
patent: 4960083 (1990-10-01), Seki et al.
patent: 4960094 (1990-10-01), Koike et al.
patent: 4960095 (1990-10-01), Koike et al.
patent: 4996954 (1991-03-01), Seki et al.
patent: 5024191 (1991-06-01), Nagahiro et al.
patent: 5529034 (1996-06-01), Sone et al.
patent: 5738053 (1998-04-01), Kato

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