IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0898321
(2007-09-11)
|
등록번호 |
US-7673594
(2010-04-21)
|
우선권정보 |
JP-2006-250126(2006-09-14); JP-2007-168055(2007-06-26) |
발명자
/ 주소 |
- Hirayama, Shuji
- Yamanishi, Teruhide
|
출원인 / 주소 |
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
3 |
초록
▼
A water circulation structure of a cylinder block having a compact layout of piping connecting an engine body and a radiator. A water-cooled internal combustion engine is provided with an engine body including a cylinder block and a cylinder head and a radiator. The radiator is disposed to be separa
A water circulation structure of a cylinder block having a compact layout of piping connecting an engine body and a radiator. A water-cooled internal combustion engine is provided with an engine body including a cylinder block and a cylinder head and a radiator. The radiator is disposed to be separated, in a prescribed direction, i.e. in a rightward direction, from the engine body. A cooling water outlet portion is open to a cylinder head water jacket and is provided in the end portion of the cylinder head. The cooling water outlet portion being connected with an inlet pipe for leading the cooling water flowing out of a cylinder block water jacket into the cylinder head water jacket to the radiator. The cooling water outlet portion is disposed to the right closer to the radiator than a chain chamber.
대표청구항
▼
What is claimed is: 1. A water-cooled internal combustion engine, comprising: an engine body including a cylinder block provided with a cylinder block water jacket and a cylinder head provided with a cylinder head water jacket; and a water pump for pressure-feeding cooling water to the water jacket
What is claimed is: 1. A water-cooled internal combustion engine, comprising: an engine body including a cylinder block provided with a cylinder block water jacket and a cylinder head provided with a cylinder head water jacket; and a water pump for pressure-feeding cooling water to the water jackets, and a radiator through which the cooling water of the water jackets circulates; wherein the radiator is disposed separated from the engine body in a prescribed direction; and a chain chamber extending, along a cylinder axis, from the cylinder block to the cylinder head in an end portion of the engine toward the radiator in the prescribed direction of the engine body, the water-cooled internal combustion engine comprising: a cooling water outlet portion open to the cylinder head water jacket the cylinder head, the cooling water outlet portion being connected with an inlet pipe for leading the cooling water flowing out of the cylinder block water jacket into the cylinder head water jacket to the radiator; and the cooling water outlet portion is disposed between the radiator and the chain chamber. 2. The water-cooled internal combustion engine according to claim 1, wherein the cooling water outlet portion is open to an upper end portion of the cylinder head water jacket; and a cooling water inlet portion through which the cooling water having radiated heat at the radiator enters the cylinder block water jacket is provided in a lower end portion of the cylinder block. 3. The water-cooled internal combustion engine according to claim 2, wherein the cooling device is provided with a thermostat for performing control to establish or shut off a cooling water circulation through the radiator according to a state of warming up of the engine; and the water pump and the thermostat are both attached to the end portion to be closer, in the prescribed direction, to the radiator than the chain chamber. 4. The water-cooled internal combustion engine according to claim 3, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 5. The water-cooled internal combustion engine according to claim 4, wherein the water-cooled internal combustion engine further comprises an intake device forming an intake path extending in a cylinder axis direction of the cylinder block as seen in the orthogonal direction; a pipe connection section including the cooling water outlet portion is provided in the portion, included in the end portion, of the cylinder head; and the temperature sensor is fixed to the pipe connection section in a location, as seen in the prescribed direction, between the intake path and a cooling water pipe which is connected to the pipe connection section and through which the cooling water passes. 6. The water-cooled internal combustion engine according to claim 2, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 7. The water-cooled internal combustion engine according to claim 1, wherein the cooling device is provided with a thermostat for performing control to establish or shut off a cooling water circulation through the radiator according to a state of warming up of the engine; and the water pump and the thermostat are both attached to the end portion to be closer, in the prescribed direction, to the radiator than the chain chamber. 8. The water-cooled internal combustion engine according to claim 7, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 9. The water-cooled internal combustion engine according to claim 1, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 10. The water-cooled internal combustion engine according to claim 9, wherein an air vent pipe for letting out air accumulated in the water pump that is attached to the portion, included in the end portion, of the cylinder head to be closer, in the prescribed direction, to the radiator than the chain chamber is connected, in the prescribed direction, to the pipe connection section and is in communication with the cylinder head water jacket. 11. The water-cooled internal combustion engine according to claim 1, wherein one end of the inlet pipe is connected to the cooling water outlet portion. 12. A water-cooled internal combustion engine, comprising: a cylinder block being provided with a cylinder block water jacket; a cylinder head being provided with a cylinder head water jacket; and a cooling device provided with a water pump for pressure-feeding cooling water to the water jackets; a radiator operatively connected to said cooling device through which the cooling water of the water jackets circulates, said radiator being disposed to be separate from the cylinder block in a prescribed direction; and a chain chamber for accommodating a transmission mechanism for a valve system disposed extending, along a cylinder axis, from the cylinder block to the cylinder head and being provided in an end portion toward the radiator in the prescribed direction of the cylinder block, the water-cooled internal combustion engine comprising: a cooling water outlet portion open to the cylinder head water jacket provided in a portion, included in the end portion, of the cylinder head, the cooling water outlet portion being connected with an inlet pipe for leading the cooling water flowing out of the cylinder block water jacket into the cylinder head water jacket to the radiator; and the upper end of the portion of the water jacket overlapping the chain chamber in the lateral direction and the outlet portion to be connected to an outlet pipe positioned closer to the radiator than the chain chamber. 13. The water-cooled internal combustion engine according to claim 12, wherein the cooling water outlet portion is open to an upper end portion of the cylinder head water jacket; and a cooling water inlet portion through which the cooling water having radiated heat at the radiator enters the cylinder block water jacket is provided in a lower end portion of the cylinder block. 14. The water-cooled internal combustion engine according to claim 13, wherein the cooling device is provided with a thermostat for performing control to establish or shut off a cooling water circulation through the radiator according to a state of warming up of the engine; and the water pump and the thermostat are both attached to the end portion to be closer, in the prescribed direction, to the radiator than the chain chamber. 15. The water-cooled internal combustion engine according to claim 14, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 16. The water-cooled internal combustion engine according to claim 15, wherein the water-cooled internal combustion engine further comprises an intake device forming an intake path extending in a cylinder axis direction of the cylinder block as seen in the orthogonal direction; a pipe connection section including the cooling water outlet portion is provided in the portion, included in the end portion, of the cylinder head; and the temperature sensor is fixed to the pipe connection section in a location, as seen in the prescribed direction, between the intake path and a cooling water pipe which is connected to the pipe connection section and through which the cooling water passes. 17. The water-cooled internal combustion engine according to claim 13, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 18. The water-cooled internal combustion engine according to claim 12, wherein the cooling device is provided with a thermostat for performing control to establish or shut off a cooling water circulation through the radiator according to a state of warming up of the engine; and the water pump and the thermostat are both attached to the end portion to be closer, in the prescribed direction, to the radiator than the chain chamber. 19. The water-cooled internal combustion engine according to claim 18, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 20. The water-cooled internal combustion engine according to claim 12, wherein a temperature sensor which is attached to the portion, included in the end portion, of the cylinder head to detect cooling water temperature extends in a direction orthogonal to the prescribed direction outside the cylinder head. 21. The water-cooled internal combustion engine according to claim 20, wherein an air vent pipe for letting out air accumulated in the water pump that is attached to the portion, included in the end portion, of the cylinder head to be closer, in the prescribed direction, to the radiator than the chain chamber is connected, in the prescribed direction, to the pipe connection section and is in communication with the cylinder head water jacket. 22. The water-cooled internal combustion engine according to claim 12, wherein one end of the inlet pipe is connected to the cooling water outlet portion.
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