In order to appropriately control the temperature state of multiple equipment having differing management temperatures, while preventing complication of the apparatus structure, a cooling apparatus for a hybrid vehicle is provided with a seventh flow path 30 g which flows coolant which has flowed only through a main flow path 22 a of a radiator 22 to a water jacket 25 via a first thermostat 23 which has an induction temperature set relatively high; an eighth flow path 30 h which flows coolant which has flowed through the main flow path 22 a and a sub flow path 22 b of the radiator 22 to the water jacket 25 via a second thermostat 24 which has an induction temperature set relatively low, and also supplies the coolant to a PDU 14 and a downverter 15; and a bypass flow path 30 j which connects a fifth flow path 30 e which supplies coolant discharged from the water jacket 25 to the radiator 22, and a position of the eighth flow path 30 h on a downstream side of the second thermostat 24.

Cooling apparatus for hybrid vehicle

PROBLEM TO BE SOLVED: To effectively utilize the waste heat of a driving electric circuit supplying the driving current to a motor. SOLUTION: The cooling water recovering the waste heat of the driving electric circuit 3 is supplied to an engine 1 from a cooling water inlet side of a cylinder head 1a. Whereby as the warm-up operation of the engine 1 can be accelerated by utilizing the waste heat of the driving electric circuit 3, the waste heat can be effectively utilized. Further the warm-up time can be shortened, and the total emission of harmful substances (emission) in the exhaust discharged from the engine 1 can be reduced. When a temperature of the cooling water returned to the driving electric circuit 3 is over a specific temperature, the supply of the waste heat of the driving electric circuit 3 to the engine 1 is stopped, whereby the driving electric circuit 3 can be prevented from being thermally damaged by the waste heat of the engine 1. COPYRIGHT: (C)2005,JPO&NCIPI

Cooling system for vehicle

PROBLEM TO BE SOLVED: To provide a warmup control device for a hybrid vehicle capable of improving warmup ability during engine cold time and suppressing deterioration in fuel efficiency. SOLUTION: The warmup control device for a hybrid vehicle is equipped with a diesel engine 11, an MMT 12, a motor generator 17 for assisting power generation by engine output or engine output by electric power of a battery 20. The warmup control device is equipped with a warmup determination means for determining the warmup state of the engine 11, and an allocation ratio control means for controlling the allocation ratio of the output of the motor generator 17 and the output of the engine 11 according to a battery charge amount SOC and a driver demand output. The allocation ratio control means is structured to control the allocation ratio so that the output of the motor generator 17 is large and the output of the engine 11 is small until completion of warmup is determined by the engine warmup means. COPYRIGHT: (C)2006,JPO&NCIPI

Warmup control device for hybrid vehicle

PURPOSE: A cooling system for a hybrid vehicle is provided to maximize the overall system efficiency of the cooling system on a driving part by properly exchanging the heat of cooling water between an engine cooling loop and an electrical field cooling loop. CONSTITUTION: A cooling system for a hybrid vehicle comprises an electrical field cooling loop(100), an engine cooling loop(200), a fan(500), an additional heat exchanger(300), and a flow rate distribution unit(350). The electrical field cooling loop includes an electrical field radiator(110) and cools electrical equipment(120) by circulating the cooling water. The engine cooling loop cools an engine(220) by circulating the cooling water. The fan blows air to an electrical field radiator and an engine radiator(210). The additional heat exchanger exchanges the cooling water discharged from the electrical field radiator and the engine radiator. The flow rate distribution unit is equipped on a flow path through which the electrical field radiator discharges the cooling water.

Cooling system for electric vehicle

PROBLEM TO BE SOLVED: To enable recovering heat to a hot water circuit of a system for heating an interior of an electric vehicle to increase the distance-to-empty of the electric vehicle as much as possible.SOLUTION: In the method for heating the interior of the electric vehicle including a driving system cooling circuit and the system for heating the interior of the hot water circuit, the hot water circuit recovers the heat generated from a heating appliance into a circulating passage, and also the driving system cooling circuit doubles as the hot water circuit, and a motor and an invertor double as the heating appliance. Provided that it is controlled whether or not to apply the charging current even to discharging resistance connected in parallel with respect to each cell while supplying a charging current from a charger, and applying the charging current to each cell so that each cell voltage of the secondary battery is equalized, the discharging resistance doubles as the heating appliance. The charging current is supplied from the charger to the secondary battery while reducing the charging current in a step-by-step manner, and during the supply, the secondary battery and the electric heater are connected in parallel to energize, and the charging current is increased so that the heat generated from the electric heater is recovered.

Method and system for heating interior of electric vehicle

PROBLEM TO BE SOLVED: To use waste heat from electronics for electric power for heating cooling water with the temperature kept below an allowable operating temperature of an electronic component such as a power semiconductor and to secure a basic heater function for the interior of a vehicle during a stop phase of an internal combustion engine in a vehicle provided with a hybrid driving unit constructed of the internal combustion engine and an electric driving unit connected to each other. SOLUTION: Cooling fluid in an electronics cooling circulation system 10 flows through an engine cooling circulation system 9 for the internal combustion engine for cooling the internal combustion engine 1. Inside the cooling circulation system 10 for the semiconductor 11 for electric power, an electrically driven cooling fluid pump 12 and a connecting member are arranged. The connecting member connects the cooling circulation system 10 of the power semiconductor 11 to the engine cooling circulation system 9 when a cooling fluid temperature is still low so that the cooling fluid temperature does not exceed an upper limit temperature for cooling the semiconductor 11 for electric power. COPYRIGHT: (C)2001,JPO

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Heat exchanger for heater in vehicle provided with hybrid driving part

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Heat exchanger for heater in vehicle provided with hybrid driving part

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