An internal combustion engine includes a cylinder head including a first valve lifter hole, a first camshaft rotatably supported on the cylinder head, a first valve lifter inserted in the first valve lifter hole, a first valve spring that biases the first valve lifter toward the first cam of the first camshaft, and an oil supply passage having a first oil supply port formed on the inner circumferential surface of the first valve lifter hole and a first passage connected to the first oil supply port. An upper end of the first oil supply port is located upward relative to the upper surface of the first valve lifter when the first valve lifter is in the lower position. A lower end of the first oil supply port is located downward relative to the upper surface of the first valve lifter when the first valve lifter is in the upper position.
Internal combustion engine, straddled vehicle, and method for manufacturing internal combustion engine
2020-11-03
Patent
Elektronische Ressource
Englisch
IPC: | F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL / B22C FOUNDRY MOULDING , Gießformen / B22D CASTING OF METALS , Gießen von Metallen / B33Y ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING , Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern / B62K Fahrräder , CYCLES / F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES , Periodisch betriebene Ventile für Kraft- und Arbeitsmaschinen oder Kraftmaschinen / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen / F16J Kolben , PISTONS |
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