Internal combustion engine, straddled vehicle, and method for manufacturing internal combustion engine
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United States of America Patent
Stats
-
Nov 3, 2020
Grant Date -
Oct 15, 2020
app pub date -
Jan 29, 2020
filing date -
Apr 12, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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.
First Claim
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International Classification(s)
- B62K:CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDE....
- F01L:CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINE....
- F01M:LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUB....
- B22D:CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY ....
- F02F:CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGI....
- F16J:PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; S....
- B22C:FOUNDRY MOULDING
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