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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorTosihiki Kobayashi
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In an internal combustion engine having a hydraulic valve characteristic control mechanism for altering phase of a cam driving a suction valve and an oil pressure control valve for controlling pressure of working oil supplied to the valve characteristic control mechanism, a chain chamber comprising a case formed by an engine main body and a cover closing the case. The oil pressure control valve is attached to the engine main body surrounded by a timing chain. In order to position the oil pressure control valve outside of the chain chamber, the cover has an opening for inserting the oil pressure control valve and the case has an attachment section around the oil pressure control valve to which a whole marginal edge of the opening is touched in liquid-tight and fixed.
An enclosure chamber for a camshaft driving endless flexible member of an internal combustion engine having a camshaft for driving an engine valve, a hydraulic valve characteristic control mechanism for altering operational characteristic of the engine valve, a control valve for controlling pressure of operating oil supplied to the valve characteristic control mechanism, and the camshaft driving endless flexible member laid between the camshaft and a crankshaft to transmit torque of the crankshaft to the camshaft, wherein said enclosure chamber is formed by a case formed by an engine main body and a cover closing an opening face of said case tightly, said control valve is attached to said engine main body at a portion surrounded by said endless flexible member, said cover has an opening through which said control valve projects outside of said cover, and said case has an attachment section to which a periphery of said opening of the cover is touched tightly and fixed.
Dependencies are inferred from the claim text.