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US 11,732,634 B1Granted
Engine
AssigneeKawasaki Motors, Ltd.
InventorsRen Toriizuka, Mitsuo Toyoshima
Life of this patent
Estimating the term…
Abstract
An engine according to the present disclosure includes: a crankcase which supports a crankshaft of the engine; a cylinder which is removably connected to the crankcase and protrudes from the crankcase in a cylinder axis direction; a cooling fan which is attached to the crankshaft and rotates in conjunction with the crankshaft; and a cover which guides cooling air generated by the cooling fan to an outer surface of the cylinder. The cover includes an opening part which allows a portion of the cooling air to flow toward an outer surface of the crankcase.
Claims20
An engine comprising:
- a crankcase which supports a crankshaft of the engine;
- a cylinder which is connected to the crankcase and protrudes from the crankcase in a cylinder axis direction;
- a cooling fan which generates cooling air;
- and
- a cover which guides the cooling air toward the cylinder,
- wherein the cover includes a facing wall located adjacent to the crankcase and facing the cylinder, and
- the facing wall includes:
- an opening part which allows a portion of the cooling air to flow toward an outer surface of the crankcase;
- and a blocking part which is arranged next to the opening part in a flow direction of the cooling air to prevent the cooling air from flowing out of the cover,
- the engine is a V-type two-cylinder engine including:
- an oil filter which is attached to the outer surface of the crankcase on a side of one cylinder and filters engine oil, and
- a starting device which is attached to the outer surface of the crankcase a side of the other cylinder and causes the crankshaft to rotate, and
- the opening part includes a first middle opening facing the oil filter and a second middle opening facing a gap between the crankcase and the starter motor.
10 more elements
An engine comprising:
- a crankcase which supports a crankshaft of the engine;
- a cylinder which is connected to the crankcase and protrudes from the crankcase in a cylinder axis direction;
- a cooling fan which generates cooling air;
- and
- a cover which guides the cooling air toward the cylinder, the cylinder being disposed inside of the cover,
- wherein the cover includes a facing wall located adjacent to the crankcase and facing the cylinder so as to partition the cylinder from the crankcase, and
- the facing wall includes:
- an opening part which allows a portion of the cooling air to flow toward the outside of the cover along an outer surface of the crankcase;
- and a blocking part which is arranged next to the opening part in a flow direction of the cooling air to prevent the cooling air from flowing out of the cover.
6 more elements
An engine comprising:
- a crankcase which supports a crankshaft of the engine;
- a cylinder which is connected to the crankcase and protrudes from the crankcase in a cylinder axis direction, the cylinder having a cooling fin on an outer periphery thereof;
- a to-be-cooled part defined on an outer surface of the crankcase and located adjacent to the cooling fin with respect to a direction perpendicular to the cylinder axis direction;
- a cooling fan which is connected to the crankshaft and generates cooling air;
- and
- a cover which covers the cylinder and guides the cooling air toward the cooling fin,
- wherein the cover includes a facing wall located adjacent to the crankcase and facing the cylinder fin, and
- the facing wall includes:
- an opening part which allows a portion of the cooling air to flow toward the to-be-cooled part outside the cover in a direction perpendicular to a crankshaft axis;
- and a blocking part which is arranged so as to be adjacent to the opening part and prevents a remaining portion of the cooling air from flowing out of the facing wall.
7 more elements
Dependencies are inferred from the claim text.