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US 7,007,655 B2Granted
Engine lubrication system
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorMasanobu Yamamoto
Life of this patent
Estimating the term…
Abstract
A vehicle comprises a vehicle body. A drive system is mounted to the vehicle body. An internal combustion engine is mounted to the vehicle body and coupled with the drive system. The engine comprises a crankshaft mounted in a crankcase. An oil pan is detachably coupled with the crankcase. A regulating wall separates first and second side chambers of the oil pan. First and second oil pumps are housed in the first side chamber and coupled with the crankshaft through a coupling system. A first oil inlet port is between the first oil pump and the first side chamber. A second oil inlet port is between the second oil pump and the second side chamber.
Claims33
A vehicle comprising:
- a vehicle body;
- a drive system mounted to said vehicle body for contacting a travel surface, whereby rotation of at least a portion of said drive system enables movement of said vehicle body relative the travel surface;
- and
- an internal combustion engine mounted to said vehicle body and coupled with said drive system, said engine comprising a crankshaft mounted in a crankcase, an oil pan detachably coupled with said crankcase, a regulating wall separating first and second side chambers of said oil pan, first and second oil pumps coupled with said crankshaft through a coupling system, said first and second oil pumps being housed in said first side chamber of said oil pan, a first oil inlet port between said first oil pump and said first side chamber of said oil pan, and a second oil inlet port between said second oil pump and said second side chamber of said oil pan.
1 more element
A vehicle comprising:
- a vehicle body;
- a drive system mounted to said vehicle body for contacting a travel surface;
- and
- an internal combustion engine mounted to said vehicle body and coupled with said drive system, said engine comprising a crankshaft mounted in a crankcase, an oil pan detachably coupled with said crankcase, a regulating wall separating first and second side chambers of said oil pan, and a means for lubricating said engine;
- wherein said lubricating means is located in said first side chamber of said oil pan, and wherein said lubricating means draws oil from said first and second side chambers of said oil pan.
2 more elements
A vehicle comprising:
- a vehicle body;
- a drive system mounted to said vehicle body for contacting a travel surface, whereby rotation of at least a portion of said drive system enables movement of said vehicle body relative the travel surface;
- and
- an internal combustion engine mounted to said vehicle body and coupled with said drive system, said engine comprising a crankshaft mounted in a crankcase, an oil pan detachably coupled with said crankcase, a regulating wall separating first and second side chambers of said oil pan, first and second oil pumps coupled with said crankshaft through a coupling system, said first and second oil pumps being housed in said first side chamber, a first oil inlet port between said first oil pump and said first side chamber, and a second oil inlet port between said second oil pump and said second side chamber, wherein said first and second oil pumps protrude below a lower surface of said crankcase.
1 more element
A vehicle comprising:
- a vehicle body;
- a drive system mounted to said vehicle body for contacting a travel surface;
- and
- an internal combustion engine mounted to said vehicle body and coupled with said drive system, said engine comprising a crankshaft mounted in a crankcase, an oil pan detachably coupled with said crankcase, a regulating wall separating first and second side chambers of said oil pan, and a means for lubricating said engine;
- wherein said lubricating means is located in said first side chamber, wherein said lubricating means draws oil from said first and second side chambers, and wherein said lubricating means protrudes below a lower surface of said crankcase.
2 more elements
A vehicle comprising:
- a vehicle body;
- a drive system mounted to said vehicle body for contacting a travel surface, whereby rotation of at least a portion of said drive system enables movement of said vehicle body relative the travel surface;
- and
- an internal combustion engine mounted to said vehicle body and coupled with said drive system, said engine comprising a crankshaft mounted in a crankcase, an oil pan detachably coupled with said crankcase, a regulating wall separating first and second side chambers of said oil pan, first and second oil pumps coupled with said crankshaft through a coupling system, said first and second oil pumps being housed in said first side chamber, a first oil inlet port between said first oil pump and said first side chamber, and a second oil inlet port between said second oil pump and said second side chamber, wherein said first and second oil pumps are positioned between said crankshaft and a bottom wall of said oil pan.
1 more element
Dependencies are inferred from the claim text.