Valve timing changer

Details Valve timing changer Valve timing changer

Filed on

2006-11-07

Date issued

2006-11-07

Examiner

Denion, Thomas (Department: 3748)

Patent Class

Internal-combustion engines

SubClass

Poppet valve operating mechanism

SubSubClass

With means for varying timing

Other Related Categories

C123S090150, C123S090310

Type

Reexamination Certificate

Status

active

Patent number

07131409

Description

ABSTRACT:
A valve timing change apparatus of the present invention is an apparatus for changing the relative angular position between a cam shaft10and a sprocket30, which comprises an angle change mechanism80changing and holding the relative angular position between the cam shaft10and the sprocket30by oil pressure, an oil pressure generating mechanism90for generating oil pressure for driving the angle change mechanism80by relative rotation, and an electromagnetic retarder100for generating relative rotation at the oil pressure generating mechanism90. With this structure, simplification and downsizing of the apparatus, reduction of engine load, suppression of oil pressure drop, etc. can be obtained. Then, a plurality of the apparatus can be mounted on an engine. In this manner, downsizing of the valve timing change apparatus, reduction of engine load, downsizing of an oil pump, etc. can be obtained.

REFERENCES:
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patent: 5386807 (1995-02-01), Linder
patent: 5450825 (1995-09-01), Geyer et al.
patent: 6302071 (2001-10-01), Kobayashi
patent: 6345595 (2002-02-01), Yamada
patent: 2001/0008129 (2001-07-01), Yamada
patent: 04/132414 (1992-12-01), None
patent: 5-195728 (1993-08-01), None
patent: 6-066115 (1994-03-01), None
patent: 3033582 (2000-02-01), None
patent: 2000-274215 (2000-10-01), None
patent: 2002-054408 (2002-02-01), None

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