Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2007-09-27
2011-11-01
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090150, C123S090170, C123S193500
Reexamination Certificate
active
08047167
ABSTRACT:
In a multi-cylinder internal combustion engine, a hydraulic valve rest mechanism is mounted on a valve operating device, which performs open-close driving of an engine valve which is arranged in a cylinder head of an engine body having a plurality of cylinders in an openable-and-closable manner. The hydraulic valve rest mechanism is operated with an oil pressure that is controlled by a hydraulic control device so as to close and rest engine valves of a plurality of cylinders for bringing the cylinders into a rest state Therefore, the miniaturization of the multi-cylinder internal combustion engine along an axis of a crankshaft and can shorten a length of an oil passage which connects a hydraulic valve rest mechanism and a hydraulic control device. A hydraulic control device is arranged on an engine body directly above a portion thereof corresponding to a cylinder that is expected to assume a cylinder rest state.
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Hirayama Taku
Maehara Hayato
Tsukui Takaaki
Birch & Stewart Kolasch & Birch, LLP
Chang Ching
Honda Motor Co. Ltd.
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