IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0390687
(2003-03-19)
|
우선권정보 |
JP-0101068 (2002-04-03) |
§371/§102 date |
20030305
(20030305)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Toyota Jidosha Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
3 |
초록
▼
A hot coolant type heat accumulating apparatus for a hybrid vehicle is provided that includes an internal combustion engine having first and second coolant circulation systems through which a coolant is circulated using power from the engine, a heat accumulation tank that recovers, via part of the s
A hot coolant type heat accumulating apparatus for a hybrid vehicle is provided that includes an internal combustion engine having first and second coolant circulation systems through which a coolant is circulated using power from the engine, a heat accumulation tank that recovers, via part of the second coolant circulation system, some of the coolant that has been heated by the internal combustion engine, and stores that heated coolant, and a controller. This controller automatically shuts off the internal combustion engine when a predetermined shutoff condition has been fulfilled, circulates the coolant through the second coolant circulation system while the internal combustion engine is shutoff, and inhibits recovery of the hot coolant while the internal combustion engine is shutoff by automatic shutoff.
대표청구항
▼
1. A hot coolant type heat accumulating apparatus for a hybrid vehicle, comprising:an internal combustion engine provided with first and second coolant circulation systems through which a coolant is circulated using power from the engine; a heat accumulation tank that recovers from the internal comb
1. A hot coolant type heat accumulating apparatus for a hybrid vehicle, comprising:an internal combustion engine provided with first and second coolant circulation systems through which a coolant is circulated using power from the engine; a heat accumulation tank that recovers from the internal combustion engine, via part of the second coolant circulation system, some of the coolant that has been heated by the engine, and stores that heated coolant; and a controller that automatically shuts off the internal combustion engine when a predetermined shutoff condition has been fulfilled, circulates the coolant in the second coolant circulation system while the internal combustion engine is shutoff, and inhibits recovery of the hot coolant while the internal combustion engine is shutoff by automatic shutoff; a condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is recovered being set to be different from a condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is not recovered. 2. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the controller inhibits automatic shutoff of the internal combustion engine while the hot coolant is being recovered to the heat accumulation tank.3. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 2, wherein the controller makes the condition to allow automatic shutoff of the internal combustion engine more difficult to fulfill while the hot coolant is being recovered to the heat accumulation tank than when the hot coolant is not being recovered.4. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the controller prohibits automatic shutoff of the internal combustion engine until recovery of the hot coolant is complete when a number of times that the internal combustion engine has been automatically shut off while the hot coolant is being recovered to the heat accumulation tank is equal to, or greater than, a predetermined value.5. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the controller ends recovery of the hot coolant and blocks communication between the heat accumulation tank and the second coolant circulation system when the internal combustion engine is automatically shut off while the hot coolant is being recovered to the heat accumulation tank.6. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 5, wherein the controller ends recovery of the hot coolant and blocks communication between the heat accumulation tank and the second coolant circulation system when a temperature within the heat accumulation tank is equal to, or greater than, a predetermined value.7. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the controller interrupts recovery of the hot coolant by blocking communication between the heat accumulation tank and the second coolant circulation system when the internal combustion engine is automatically shutoff while the hot coolant is being recovered to the heat accumulation tank.8. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 7, wherein the controller interrupts recovery of the hot coolant by blocking communication between the heat accumulation tank and the second coolant circulation system when a temperature within the heat accumulation tank is below a predetermined value.9. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the second coolant circulation system is a coolant circulation system for supplying the hot coolant to a heater for heating a passenger compartment.10. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the hot coolant type heat accumulating apparatus comprises part of an apparatus that promotes warming using the hot coolant, which is provided with hot coolant supplying means for promoting warming of the internal combustion engine by supplying the hot coolant to a cooling system of the internal combustion engine from the heat accumulation tank during a cold start of the internal combustion engine.11. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the heat accumulation tank is connected, via a valve device, to the second coolant circulation system, and, during normal operation, this valve device maintains communication in the second coolant circulation system and blocks communication between the heat accumulation tank and the second coolant circulation system, and during hot coolant recovery, opens communication between the heat accumulation tank and the second coolant circulation system.12. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 11, wherein the second coolant circulation system includes an electric pump that operates while the internal combustion engine is shutoff by automatic shutoff.13. The hot coolant type heat accumulating apparatus for a hybrid vehicle according to claim 1, wherein the condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is recovered and the condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is not recovered are determined based on at least one of vehicle speed and power required from the internal combustion engine.14. A heat accumulating method of a hot coolant type heat accumulating apparatus for a hybrid vehicle, the hot coolant type heat accumulating apparatus for a hybrid vehicle including an internal combustion engine provided with first and second coolant circulation systems through which a coolant is circulated using power from the engine, and a heat accumulation tank that recovers from the internal combustion engine, via part of the second coolant circulation system, some of the coolant that has been heated by the engine, and stores that heated coolant, the heat accumulating method of a hot coolant type heat accumulating apparatus for a hybrid vehicle, comprising the steps of:automatically shutting off the internal combustion engine when a predetermined shutoff condition has been fulfilled; circulating the coolant through the second coolant circulation system while the internal combustion engine is shutoff; inhibiting recovery of the hot coolant while the internal combustion engine is shutoff by automatic shutoff; and setting a condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is recovered to be different from a condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is not recovered. 15. The heat accumulating method according to claim 14, further comprising the step of inhibiting automatic shutoff of the internal combustion engine while the hot coolant is being recovered to the heat accumulation tank.16. The heat accumulating method according to claim 14, further comprising the step of prohibiting automatic shutoff of the internal combustion engine until recovery of the hot coolant is complete when a number of times the internal combustion engine has been automatically shutoff while the hot coolant is being recovered to the heat accumulation tank is equal to, or greater than, a predetermined value.17. The heat accumulating method according to claim 14, further comprising the step of ending recovery of the hot coolant and blocking communication between the heat accumulation tank and the second coolant circulation when the internal combustion engine is automatically shutoff while the hot coolant is being recovered to the heat accumulation tank.18. The heat accumulating method according to claim 14, further comprising the step of interrupting recovery of the hot coolant by blocking communication between the heat accumulation tank and the second coolant circulation system when the internal combustion engine is automatically shutoff while the hot coolant is being recovered to the heat accumulation tank.19. The hot coolant type heat accumulating method for a hybrid vehicle according to claim 14, wherein providing the condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is recovered and the condition to allow the automatic shutoff of the internal combustion engine when the hot coolant is not recovered includes determining based on at least one of vehicle speed and power required from the internal combustion engine.20. A hot coolant type heat accumulating apparatus for a hybrid vehicle, comprising:an internal combustion engine provided with first and second coolant circulation systems through which a coolant is circulated using power from the engine; a heat accumulation tank that recovers from the internal combustion engine, via part of the second coolant circulation system, some of the coolant that has been heated by the engine, and stores that heated coolant; and a controller that automatically shuts off the internal combustion engine when a predetermined shutoff condition has been fulfilled, circulates the coolant in the second coolant circulation system while the internal combustion engine is shutoff, and inhibits recovery of the hot coolant while the internal combustion engine is shutoff by automatic shutoff, wherein the controller prohibits automatic shutoff of the internal combustion engine until recovery of the hot coolant is complete when a number of times that the internal combustion engine has been automatically shut off while the hot coolant is being recovered to the heat accumulation tank is equal to, or greater than, a predetermined value.
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