Air conditioner for hybrid vehicle
AssigneeDenso Corporation
InventorKunio Iritani
Life of this patent
Estimating the term…
Abstract
In an air conditioner for a hybrid vehicle, an air conditioning unit performs air-conditioning operation by electrical power supplied from a battery. When a residual charging degree of the battery becomes equal to or lower than a target degree, an electrical motor generator is driven by a vehicle engine so that the battery is charged through the electrical motor generator. Further, when a rotation speed of the engine is lower than a predetermined speed or when a power generation efficiency due to the engine is lower than a predetermined efficiency, air-conditioning capacity of the air conditioning unit is set lower, so that a consumption power of the air conditioner is restricted. Accordingly, the frequency for starting the engine only for charging the battery can be reduced.
Claims4
An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comprising:
- an air conditioning unit, to which electrical power is supplied from the battery, for performing air-conditioning operation in a passenger compartment of the vehicle;
- and
- a control unit for controlling operation of the air conditioning unit, wherein:
- when a residual charging degree of the battery becomes equal to or lower than a target degree, the electrical motor generator is driven by the engine to charge the battery;
- and
- when a rotation speed of the engine is equal to or lower than a predetermined rotation speed, the control unit decreases an air-conditioning capacity of the air conditioning unit, as compared with a case where the rotation speed of the engine is higher than the predetermined rotation speed.
An air conditioner for a hybrid vehicle, the hybrid vehicle having an engine for running the vehicle, an electrical motor generator for running the vehicle and for generating electrical power, and a battery for supplying electrical power to the electrical motor generator, the air conditioner comprising:
- an air conditioning unit, to which electrical power is supplied from the battery, for performing air-conditioning operation in a passenger compartment of the vehicle;
- and
- a control unit for controlling operation of the air conditioning unit, wherein:
- when a residual charging degree of the battery becomes equal to or lower than a target degree, the electrical motor generator is driven by the engine to charge the battery;
- and
- when a power generation efficiency due to the engine is equal to or lower than a predetermined efficiency, the control unit decreases air-conditioning capacity of the air conditioning unit, as compared with a case where the power generation efficiency due to the engine is higher than the predetermined efficiency.
Dependencies are inferred from the claim text.