Oil supply structure of water-cooled internal combustion engine
AssigneeHonda Motor Co., Ltd.
InventorsHiroshi Sotani, Hiroshi Yokota
Life of this patent
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Abstract
An oil supply structure of a water-cooled internal combustion engine includes an oil cooler for improving oil circulation efficiency by making an oil passage of a lubrication system short. In addition, weight of the oil cooler is reduced by reducing the number of parts. The oil supply structure of a water-cooled internal combustion engine includes an oil pump drive shaft of an oil pump that is coaxially coupled with one end of a balancer shaft placed parallel with a crankshaft and a water pump drive shaft of a water pump that is coaxially coupled with the other end of the balancer shaft. In the oil supply structure, an oil cooler is provided in the vicinity of the oil pump together with an oil filter.
Claims8
An oil supply structure of a water-cooled internal combustion engine in which an oil pump drive shaft of an oil pump is coaxially coupled with one end of a balancer shaft placed parallel with a crankshaft and a water pump drive shaft of a water pump is coaxially coupled with the other end of the balancer shaft, comprising:
- an oil cooler being positioned adjacent to and in communication with the oil pump;
- an oil filter being positioned adjacent to and in communication with the oil pump;
- an engine case cover for covering the oil pump from a side of the internal combustion engine opposite to a side of the internal combustion engine where the water pump is positioned;
- said oil pump comprising:
- a scavenging pump for pumping oil to an oil tank;
- a clutch oil pump for pressure-feeding oil from the oil tank to a hydraulic clutch;
- and
- an engine oil pump for supplying oil to each lubrication portion of the internal combustion engine are placed side by side on the oil pump drive shaft;
- and
- said scavenging pump, said clutch oil pump and said engine oil pump being coaxially aligned relative to each other and with the one end of the balancer shaft with said clutch oil pump being sandwiched between the scavenging pump and the engine oil pump.
An oil supply structure of a water-cooled internal combustion engine comprising:
- an oil pump drive shaft;
- an oil pump operatively connected to the oil pump drive shaft and being coaxially coupled with one end of a balancer shaft placed parallel with a crankshaft;
- a water pump drive shaft;
- a water pump operatively connected to the water pump drive shaft and being coaxially coupled with the other end of the balancer shaft;
- an oil cooler operatively positioned adjacent to and in communication with the oil pump together;
- and
- an oil filter operatively positioned adjacent to and in communication with the oil pump, said oil filter being provided at a same height as or a lower position than the oil pump;
- said oil pump comprising:
- a scavenging pump for pumping oil to an oil tank;
- a clutch oil pump for pressure-feeding oil from the oil tank to a hydraulic clutch;
- and
- an engine oil pump for supplying oil to each lubrication portion of the internal combustion engine are placed side by side on the oil pump drive shaft;
- and
- said scavenging pump, said clutch oil pump and said engine oil pump being coaxially aligned relative to each other and with the one end of the balancer shaft with said clutch oil pump being sandwiched between the scavenging pump and the engine oil pump.
Dependencies are inferred from the claim text.