Internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsMasayuki Otani, Nobuhiko Satou
Life of this patent
Estimating the term…
Abstract
Provided is an internal combustion engine having an oil circulating structure wherein oil used to lubricate valve operating members in the cylinder head drops onto an oil pan, and the oil accumulated therein is drawn up to the cylinder head again. Each on corners of the squire bottom face inside the cylinder head of the internal combustion engine, an oil dropping hole is provided to allow the oil used to lubricate valve operating members to flow thereinto. Also provided is an oil channel communicating with one or more of the oil dropping hole at the bottom thereof to guide the oil toward the driving gear transmitting the driving force of the engine.
Claims6
An internal combustion engine having an oil circulating structure for dropping oil onto an oil pan, the oil used to lubricate a valve operating member provided with a cylinder head, and drawing the oil accumulated in the oil pan up to the cylinder head again, comprising:
- an oil dropping hole, into which the oil used to lubricate the valve operating member flows, is provided each on at least two corners of a square bottom face of the cylinder head, and an oil channel communicating with a bottom end of the oil dropping hole to guide the oil flowed into the oil channel to a driving gear, which transmits a driving force of the internal combustion engine, wherein
- the oil dropping hole is provided at two of the corners which are mutually diagonal.
Dependencies are inferred from the claim text.