In-line four cylinder engine for vehicle and vehicle provided with the engine

A two-plane type crankshaft is provided. The weight of crank webs for the respective cylinders is divided between left and right half webs and balance ratios kL and kR of the half webs for the respective cylinders are set so as to be (kL−0.25)·(0.25−kR)≅DR/DL to form a track of a vector of a primary...

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Bibliographische Detailangaben
Hauptverfasser: NISHI KENGO, FURUSAWA MASAO
Format: Patent
Sprache:eng
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Zusammenfassung:A two-plane type crankshaft is provided. The weight of crank webs for the respective cylinders is divided between left and right half webs and balance ratios kL and kR of the half webs for the respective cylinders are set so as to be (kL−0.25)·(0.25−kR)≅DR/DL to form a track of a vector of a primary inertial couple into a substantial circle. A primary balancer offsets the primary inertia couple.