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US 8,555,839 B2Granted
Valve-mechanism-equipped engine
AssigneeHonda Motor Co., Ltd.
InventorsToru Kawai, Yoshikazu Sato, Keita Ito
Life of this patent
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Abstract
A valve-mechanism-equipped engine having increased combustion efficiency is disclosed. The engine includes intake and exhaust rocker arms having a swing center line inclined relative to a rotation center line of a cam, and an intake valve and an exhaust valve inclined relative to a cylinder. A cam surface is inclined relative to the rotation center line of the cam. Slippers of the intake and exhaust rocker arms are in sliding contact with the cam surface.
Claims3
A valve-mechanism-equipped engine, comprising:
- an intake rocker arm for opening and closing an intake valve of a combustion chamber;
- an exhaust rocker arm for opening and closing an exhaust valve of the combustion chamber;
- a cam for driving the intake rocker arm and the exhaust rocker arm;
- and
- transmission means for transmitting motive power of a crankshaft to the cam,
- wherein the intake rocker arm and the exhaust rocker arm have a swing center line inclined relative to a rotation center line of the cam,
- wherein the cam has a cam surface inclined relative to the rotation center line of the cam,
- wherein the intake rocker arm and the exhaust rocker arm are provided with slippers that are in sliding contact with the cam surface,
- wherein the slippers are guided by the cam surface such that the intake rocker arm and the exhaust rocker arm swing about the swing center line,
- wherein the transmission means comprises:
- a driving pulley provided to the crankshaft;
- a driven pulley provided coaxially with the rotation center line of the cam;
- and
- a transmission belt trained around the driving pulley and the driven pulley, and
- wherein the driven pulley is provided in a direction of the combustion chamber in relation to the cam.
12 more elements
Dependencies are inferred from the claim text.