Lubricating structure for an engine
First Claim
1. A lubricating structure for an engine wherein a crankcase for supporting a crankshaft for rotation thereon is formed from a pair of case halves coupled to each other along a mating plane extending along a plane perpendicular to an axial line of said crankshaft, the lubricating structure comprising:
- an oil reservoir formed at a lower portion of said crankcase below said crankshaft in such a manner as to extend across the mating plane;
a pump chamber of an oil pump which sucks oil from said oil reservoir and is formed between said two case halves across the mating plane; and
a path groove which forms an oil suction path for interconnecting said oil pump and said oil reservoir between said two case halves which form the mating plane therebetween, the path groove being provided in at least one of said two case halves.
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Accused Products
Abstract
A lubricating structure for an engine includes a crankcase for supporting a crankshaft formed from a pair of case halves coupled to each other along a mating plane extending along a plane perpendicular to an axial line of the crankshaft. An oil reservoir in a lower portion of the crankcase extends across the mating plane. A pump chamber of an oil pump is formed between the two case halves across the mating plane. Lubricant is drawn from the oil reservoir into the oil pump using a structure which can achieve reduction of the number of parts and improve the ease of assembly. The structure includes a path groove, which forms an oil suction path for interconnecting the oil pump and the oil reservoir, formed in at least one of the two case halves.
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Citations
13 Claims
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1. A lubricating structure for an engine wherein a crankcase for supporting a crankshaft for rotation thereon is formed from a pair of case halves coupled to each other along a mating plane extending along a plane perpendicular to an axial line of said crankshaft, the lubricating structure comprising:
- an oil reservoir formed at a lower portion of said crankcase below said crankshaft in such a manner as to extend across the mating plane;
a pump chamber of an oil pump which sucks oil from said oil reservoir and is formed between said two case halves across the mating plane; and
a path groove which forms an oil suction path for interconnecting said oil pump and said oil reservoir between said two case halves which form the mating plane therebetween, the path groove being provided in at least one of said two case halves. - View Dependent Claims (2, 3, 4)
- an oil reservoir formed at a lower portion of said crankcase below said crankshaft in such a manner as to extend across the mating plane;
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5. A lubricating structure for an engine comprising:
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a crankcase for supporting a crankshaft for rotation thereon, said crankcase being formed from a first case half and a second case half coupled to each other along a mating plane extending along a plane perpendicular to an axial line of said crankshaft; an oil reservoir formed at a lower portion of said crankcase below said crankshaft in such a manner as to extend across the mating plane; a pump chamber of an oil pump for sucking oil from said oil reservoir and formed between said two case halves across the mating plane; and a groove formed in a body at least one of said first case half and said second case half, the groove providing an oil suction path for interconnecting said oil pump and said oil reservoir. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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Specification