Engine cooling structure for motorcycle
AssigneeKawasaki Motors, Ltd.
InventorsShogo Sakaguchi, Takahiro Jyouzaki
Life of this patent
Estimating the term…
Abstract
A front fender is provided in front of an air-cooled engine which is a drive source of a motorcycle. An air introduction hole which opens frontward is formed at a front part of a cylinder head of the air-cooled engine. A space around a plug attachment portion for a spark plug and a space in front of the cylinder head communicate with each other through the air introduction hole. A guide portion for guiding incoming wind toward the air introduction hole is formed at a rear part of the front fender.
Claims9
An engine cooling structure for a motorcycle including an air-cooled engine, which is a drive source, and a front fender provided in front of the air-cooled engine, wherein
- a cylinder head of the air-cooled engine includes a plurality of cooling fins, the cooling fins being connected to each other by vertical walls extending in a direction of a cylinder axis,
- an air introduction hole is formed at a front part of the cylinder head of the air-cooled engine such that the air introduction hole opens frontward and a space around an attachment portion for a spark plug and a space in front of the cylinder head communicate with each other through the air introduction hole,
- a guide portion is formed at the front fender and configured to guide incoming wind toward the air introduction hole,
- the air introduction hole is disposed at a front surface of the cylinder head, which opens frontward, and is a through-hole which is formed between the vertical walls,
- a plug vicinity space, which is a space inside the cylinder head, and a frontward space, which is a space outside of the cylinder head, communicate with each other through the air introduction hole, and
- the incoming wind is introduced to the inside of the cylinder head through the air introduction hole, and passes through the plug vicinity space so as to collide with the attachment portion for the spark plug, which protrudes upward in the plug vicinity space.
An engine cooling structure for a motorcycle including an air-cooled engine, which is a drive source, and a front fender provided in front of the air-cooled engine, wherein
- a cylinder head of the air-cooled engine includes a plurality of cooling fins, the cooling fins being connected to each other by vertical walls extending in a direction of a cylinder axis,
- an air introduction hole is formed at a front part of the cylinder head of the air-cooled engine such that the air introduction hole opens frontward and a space around an attachment portion for a spark plug and a space in front of the cylinder head communicate with each other through the air introduction hole,
- a guide portion is formed at the front fender and configured to guide incoming wind toward the air introduction hole,
- the air introduction hole is disposed at a front surface of the cylinder head, which opens frontward, and is a through-hole which is formed between the vertical walls,
- a plug vicinity space, which is a space inside the cylinder head, and a frontward space, which is a space outside of the cylinder head, communicate with each other through the air introduction hole, and
- the air introduction hole is disposed at the front part of the cylinder head on the same side of the spark plug, with respect to a vehicle widthwise direction.
Dependencies are inferred from the claim text.