Cylinder head structure for multiple cylinder engines

Details Cylinder head structure for multiple cylinder engines Cylinder head structure for multiple cylinder engines

F - Mech Eng,Light,Heat,Weapons

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B

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F02B 15/00 (2006.01) F01L 1/26 (2006.01) F02F 1/42 (2006.01) F02B 1/04 (2006.01) F02B 75/18 (2006.01) F02F 1/24 (2006.01)

Patent

CA 1326618

ABSTRACT OF THE DISCLOSURE A cylinder head structure for a multiple cylinder engine, comprising, at least for each of its cylinders located at either longitudinal end of its cylinder bank: a combustion chamber defined by the cylinder and a piston received therein; an intake passage communicated with an intake manifold at its one end and with said combustion chamber at its other end; an exhaust passage communicated with an exhaust manifold at its one end and with said combustion chamber at its other end; at least one of said intake passage and said exhaust passage being curved toward a longitudinally central part of said cylinder bank as it extends from its other end to its one end. Hence, the size and weight of the intake manifold and/or the exhaust manifold can be reduced. In particular, if the passage is communicated with the combustion chamber by a pair of ports controlled by valve and arranged along a longitudinal direction of the cylinder bank and different flow rates are assigned to these ports depending the operating conditions of the engine, a significant improvement in the performance of the engine may be attained by symmetrically arranging these ports with respect to a longitudinal center of the cylinder bank.

607029

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