Osha Liang LLP
Internal combustion engine piston crank mechanism
A piston crank mechanism has an upper link coupled to a piston by a piston pin, a lower link having a crankpin journal, wherein the crankpin journal is coupled to a crankpin of a crankshaft and is coupled to the upper link by an upper pin, and a control link is coupled to an eccentric cam of a control shaft that is supported by an engine block and coupled to a control pin boss by a control pin. The crankpin journal of the lower link is arranged and dimensioned relative to the upper pin such that a projection area defined by projecting the width of the upper pin along a direction line passing through a center of the piston pin and a center of the upper pin does not obscure an area defined by the crankpin during operation of the crankshaft as viewed in an axial direction of the crankpin.
Nissan Motor Co., Ltd.
F F F F
F02B F16C F16C F16C
inventional additional additional additional
Kenshi Katsuya Makoto Hideaki
Ushijima Moteki Kobayashi Mizuno