There is provided a variable valve timing system for an engine in which a cylinder head is fixed on a cylinder, and the cylinder head is suspended on a vehicle body frame, the variable valve timing system including: a variable valve device configured to change an opening and closing timing of a valve according to a hydraulic pressure; and an oil control valve. The vehicle body frame includes a main frame configured to laterally cover a rear side of the cylinder head and a down frame configured to laterally cover a front side of the cylinder head. In a side view of a vehicle, the oil control valve is detachably disposed on an outer surface of the engine below an area surrounded by the main frame, the down frame, and a lower surface of the cylinder head.
VARIABLE VALVE TIMING SYSTEM
2023-08-10
Patent
Electronic Resource
English
IPC: | F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES , Periodisch betriebene Ventile für Kraft- und Arbeitsmaschinen oder Kraftmaschinen / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / B62K Fahrräder , CYCLES / F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL |
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