Hot coolant type heat accumulating apparatus for a hybrid vehicle and heat accumulating method thereof
First Claim
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.
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Accused Products
Abstract
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.
18 Citations
20 Claims
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1. A hot coolant type heat accumulating apparatus for a hybrid vehicle, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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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:
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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. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A hot coolant type heat accumulating apparatus for a hybrid vehicle, comprising:
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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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Specification