Lubricating structure for an internal combustion engine
First Claim
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1. An internal combustion engine wherein a transmission case which accommodates a transmission is provided on one side of a crankcase which supports a crankshaft and a crank side oil chamber is provided at a lower portion of said crankcase comprising:
- a transmission side oil chamber partitioned from a transmission accommodation section is provided at a lower portion of said transmission case such that oil is circulated through said transmission side oil chamber,wherein said crank side oil chamber has a first oil chamber and a second oil chamber separate from each other, anda first opening is in constant flow communication with said transmission side oil chamber provided in said first oil chamber while a second opening is in constant flow communication with said second oil chamber provided in said transmission side oil chamber.
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Abstract
An internal combustion engine wherein the oil heat radiation amount from an oil chamber can be increased. A crank side oil chamber formed in a crankcase is divided into a first oil chamber and a second oil chamber with first openings for communicating with a transmission side oil chamber formed in a transmission case being provided in the first oil chamber while a second opening for communicating with the second oil chamber is provided in the transmission side oil chamber.
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Citations
18 Claims
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1. An internal combustion engine wherein a transmission case which accommodates a transmission is provided on one side of a crankcase which supports a crankshaft and a crank side oil chamber is provided at a lower portion of said crankcase comprising:
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a transmission side oil chamber partitioned from a transmission accommodation section is provided at a lower portion of said transmission case such that oil is circulated through said transmission side oil chamber, wherein said crank side oil chamber has a first oil chamber and a second oil chamber separate from each other, and a first opening is in constant flow communication with said transmission side oil chamber provided in said first oil chamber while a second opening is in constant flow communication with said second oil chamber provided in said transmission side oil chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An internal combustion engine including a transmission case for accommodating a transmission is provided on one side of a crankcase which supports a crankshaft comprising:
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a crank side oil chamber formed at a lower portion of said crankcase; and a transmission side oil chamber formed from a transmission accommodation section, said transmission side oil chamber being provided at a lower portion of said transmission case; wherein oil is circulated through said transmission side oil chamber, wherein said crank side oil chamber has a first oil chamber and a second oil chamber separate from each other, and a first opening is in constant flow communication with said transmission side oil chamber provided in said first oil chamber while a second opening is in constant flow communication with said second oil chamber provided in said transmission side oil chamber. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification