Cylinder head structure of an internal combustion engine

Internal-combustion engines – Particular piston and enclosing cylinder construction – Cylinder head

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F02F 124

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active

059571047

ABSTRACT:
A cylinder head structure of an internal combustion engine which permits shortening of the overall length of the engine, provides a reduction in the exhaust-side width of the engine making the engine compact, and enables formation of intake ports in a rectilinear shape, all of which are advantageous with respect to both performance of the engine and layout of an intake manifold. The cylinder head structure includes intake-side bolt boss portions and exhaust-side bolt boss portions formed adjacently on both sides of intake-side tappet boss portions and exhaust-side tappet boss portions in a crank axis direction, respectively, the intake-side tappet boss portions being positioned outside the intake-side bolt boss portions in the transverse direction of the cylinder head, and the exhaust-side tappet boss portions being positioned inside the exhaust-side bolt boss portions transversely of the cylinder head.

REFERENCES:
patent: 5531194 (1996-07-01), Komatsu et al.
patent: 5535714 (1996-07-01), Aoyama et al.
patent: 5609129 (1997-03-01), Hauf et al.
patent: 5845616 (1998-12-01), Schwarzenthal et al.
patent: 5875754 (1999-03-01), Ickinger
patent: 5906186 (1999-05-01), Aoyama et al.

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