Water cooled internal combustion engine for vehicle
AssigneeHonda Motor Co., Ltd.
InventorsAkihiro Iida, Yuichi Mori
Life of this patent
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Abstract
A compact water cooled internal combustion engine for a vehicle wherein a water pump operated by a pump driving shaft is arranged on a crankcase cover for covering a lateral side of a crankcase, such that an axis of rotation of the water pump is coaxial with the pump driving shaft. A case member that forms a pump case of a water pump, together with a crankcase cover, and that rotatably supports a pump shaft of the water pump, is attached on an inner surface side of the crankcase cover.
Claims20
A water cooled internal combustion engine for a vehicle comprising:
- a crankcase constituting a portion of an engine main body mounted on a vehicle body frame, and rotatably supporting a crankshaft;
- a crankcase cover for covering a lateral side of the crankcase, said crankcase cover being attached to the crankcase;
- a pump driving shaft operated by power transmitted from the crankshaft, said pump driving shaft being rotatably supported on an axis parallel to the crankshaft by the crankcase;
- a water pump driven through the pump driving shaft, said water pump having a pump shaft with an axis of rotation coaxial with the pump driving shaft and said pump driving shaft being rotatably supported on the crankcase cover;
- a case member having a first side and a second side, a shaft support section formed on the first side thereof for rotatably supporting the pump drive shaft;
- an impeller operatively connected to the pump drive shaft and being disposed on the second side of the case member;
- and
- a pump chamber formed between the second side of the case member and said crankcase cover for forming said pump chamber of the water pump, said second side of the case member being attached on an inner surface side of the crankcase cover to form said pump chamber between the second side of the case member and the crankcase cover.
A water cooled internal combustion engine for a vehicle comprising:
- a crankcase for rotatably supporting a crankshaft;
- a crankcase cover operatively connected to said crankcase for covering a lateral side of the crankcase;
- a pump driving shaft operatively connected to the crankshaft, said pump driving shaft being rotatably supported on an axis parallel to the crankshaft by the crankcase;
- a water pump operatively connected to the pump driving shaft, said water pump having a pump shaft with an axis of rotation coaxial with the pump driving shaft and said pump driving shaft being rotatably supported on the crankcase cover;
- a case member having a first side and a second side, a shaft support section formed on the first side thereof for rotatably supporting the pump drive shaft;
- an impeller operatively connected to the pump drive shaft and being disposed on the second side of the case member;
- and
- a pump chamber formed between the second side of the case member and said crankcase cover for forming said pump chamber of the water pump, said second side of the case member being attached on an inner surface side of the crankcase cover to form said pump chamber between the second side of the case member and the crankcase cover.
Dependencies are inferred from the claim text.