Honda Giken Kogyo Kabushiki Kaisha

Honda Giken Kogyo K.k.

Toshiyuki Satou

Izumi Sugiyama

Kensuke Nakamura

Masayasu Sakata

A plate-shaped gasket is inserted between a plurality of parts with an edge of the plate-shaped gasket offset such that portions of mutually joining surfaces of the plurality of parts to be joined to each other (a cylinder block and a cylinder head , as well as a chain cover and a sprocket casing portion in the embodiment) directly oppose each other, and a liquid gasket is filled in a gap G formed by the directly opposing portions of the plurality of parts and the offset edge (an inner peripheral edge of a chain accommodating hole ) of the plate-shaped gasket. As a result, since the thickness of the liquid gasket can be determined by the thickness of the plate-shaped gasket, it becomes unnecessary to form a recessed portion for storing the liquid gasket by machining, so that the number of manufacturing steps is prevented from increasing.

Sealing structure

A tensioner for a camshaft driving chain (a plunger device,shown in the first embodiment of the invention) and a hydraulic control valve,are disposed close to each other. An oil passage,for supplying an oil pressure to the tensioner is caused to branch off from a downstream side of an oil filter,provided at an inlet port,of the hydraulic control valve. With this construction, the arrangement of the oil passage can be simplified, and therefore not only can man hours required for forming the oil passage be reduced, but also the number of components required can also be reduced by commonizing the oil filter. Accordingly, it is possible to provide an improved assembling arrangement for a tensioner and a hydraulic control valve in an internal combustion engine without involving an increase in production costs.

Growing community of inventors

Saitama, Japan

Toshiyuki Satou