Blowby gas returning structure for engine
AssigneeSuzuki Motor Corporation
InventorSatoshi Kasahara
Life of this patent
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Abstract
A blowby gas-returning structure for an engine which is adapted to provide smooth returning of a blowby gas, and to provide a light-weight or compact engine. The blowby gas-returning structure is provided with passage-forming object or wall in order to continue blowby gas passages without interruption. Further, the cylinder block may be provided with void space sections which share space with the blowby gas passages and the cylinder head-mounting bolt holes. In addition, the blowby gas passage in the cylinder head may be disposed offset substantially midway along the length thereof.
Claims11
In a blowby gas-returning structure for an engine, in which a blowby gas passage is provided in both a cylinder block and a cylinder head so that a blowby gas flowing through between an engine piston and an engine cylinder sleeve is introduced into a gas-side breather chamber, said chamber being formed by a baffle plate within a cylinder head cover, the improvement wherein said cylinder block is provided with a void space section which shares space with a cylinder head-mounting bolt and said blowby gas passage.
A blowby gas-returning structure for an engine comprising:
- a cylinder block;
- a cylinder head disposed on a mounting face of said cylinder block;
- a cylinder head cover disposed on a mounting face of said cylinder head, said cylinder head cover including a baffle plate disposed therein defining a gas-side breather chamber;
- said cylinder block and said cylinder head together defining a blowby gas passage for introducing blowby gas flowing between an engine piston and an engine cylinder sleeve into said gas-side breather chamber;
- a mounting bolt hole disposed in said cylinder head and a bolt disposed therein for attaching said cylinder head to said cylinder block;
- and
- an open region formed in said cylinder block and forming part of said blowby gas passage, said open region opening at said mounting face of said cylinder block and extending transversely therefrom, a portion of said bolt extending through said open region.
Dependencies are inferred from the claim text.