Engine unit for a vehicle
First Claim
1. An engine unit for a vehicle, comprising an engine case in which a crankshaft and a counter shaft are rotatably supported and an oil pump is provided so that rotation of the crankshaft is transmitted to the counter shaft at a reduced speed, wherein said counter shaft is arranged so as to serve as a driving shaft of the oil pump which is arranged coaxial with the counter shaft, said oil pump has a pump case, which is provided with a tubular engaging member concentrically surrounding the counter shaft so as to extend in an axial direction thereof and with a discharge passage extending so as to be apart from the counter shaft in the axial direction thereof, said tubular engaging member being fitted into a fitting hole for a counter shaft bearing, which is arranged on the engine case side, and said discharge passage having an end portion fitted into an oil supply port formed in the engine case.
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Accused Products
Abstract
An engine unit for a vehicle comprises an engine case in which a crankshaft and a counter shaft are rotatably supported and an oil pump is provided so that rotation of the crankshaft is transmitted to the counter shaft. The counter shaft serves as a driving shaft of the oil pump arranged to be coaxial with the counter shaft. The oil pump has a pump case, which is provided with a tubular engaging member concentrically surrounding the counter shaft to extend in an axial direction thereof and with a discharge passage extending so as to be apart from the counter shaft in the axial direction thereof. The tubular engaging member is fitted into a fitting hole for a counter shaft bearing and the discharge passage having an end portion fitted into an oil supply port formed in the engine case.
23 Citations
8 Claims
- 1. An engine unit for a vehicle, comprising an engine case in which a crankshaft and a counter shaft are rotatably supported and an oil pump is provided so that rotation of the crankshaft is transmitted to the counter shaft at a reduced speed, wherein said counter shaft is arranged so as to serve as a driving shaft of the oil pump which is arranged coaxial with the counter shaft, said oil pump has a pump case, which is provided with a tubular engaging member concentrically surrounding the counter shaft so as to extend in an axial direction thereof and with a discharge passage extending so as to be apart from the counter shaft in the axial direction thereof, said tubular engaging member being fitted into a fitting hole for a counter shaft bearing, which is arranged on the engine case side, and said discharge passage having an end portion fitted into an oil supply port formed in the engine case.
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8. An engine unit for a vehicle, comprising:
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an engine case in which a crankshaft and a counter shaft are rotatably supported so that rotation of the crankshaft is transmitted to the counter shaft at a reduced speed; and
an oil pump arranged coaxially with the counter shaft serving as a driving shaft of the oil pump, said oil pump having a pump case, which is provided with a tubular engaging member concentrically surrounding the counter shaft so as to extend in an axial direction thereof and a discharge passage extending so as to be apart from the counter shaft in the axial direction thereof, said tubular engaging member being fitted into a fitting hole formed to a counter shaft bearing supporting the counter shaft and being arranged on the engine case side, and said discharge passage having an end portion fitted into an oil supply port formed to the engine case.
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Specification