Internal-combustion engines – Frame construction – Horizontal cylinder
Patent
1994-03-02
1995-04-11
Kamen, Noah P.
Internal-combustion engines
Frame construction
Horizontal cylinder
123195H, F02F 700
Patent
active
054048478
ABSTRACT:
The present invention provides a low noise level internal combustion engine including a cylinder block without a skirt portion, a supporting member for supporting a journal portion of the crankshaft, the supporting member being fixed to a lower end portion of the cylinder block, a shroud for suppressing an explosion sound in a cylinder and a bearing sound to be radiated out of the engine, the shroud being integrally formed with a cylinder head fixed to an upper side of the cylinder block whereby the shroud is spaced from the cylinder block. A noise insulating member is disposed between the shroud and an oil pan for increasing a flexural rigidity of the shroud and oil pan, whereby the present invention provides a low noise level internal combustion engine which can increase a flexural rigidity of a skirt portion without increasing a wall thickness of the cylinder block or using a high strength material, and provides a low noise level internal combustion engine in which a bearing cap supporting a journal portion of a crankshaft are separated from each other and assembled by a coupling member.
REFERENCES:
patent: 4213440 (1980-07-01), Abe et al.
patent: 4230087 (1980-10-01), Abe et al.
patent: 4412516 (1993-11-01), Hayashi
Hyundai Motor Company
Kamen Noah P.
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