Vehicular air conditioning device
AssigneeSanden Automotive Climate Systems Corporation
InventorsTakafumi Aoki, Ryo Miyakoshi, Kouhei Yamashita
Life of this patent
Estimating the term…
Abstract
A heating temperature is appropriately estimated according to an operation mode to achieve comfortable vehicle interior air conditioning. A vehicular air conditioning device 1 includes a compressor 2, an air flow passage 3, a radiator 4 for heating air to be supplied to a vehicle interior, a heat absorber 9 for cooling the air to be supplied to the vehicle interior, and a heat pump controller. The heat pump controller calculates a heating temperature TH being the temperature of air on a leeward side of the radiator and use the heating temperature in control, and calculates the heating temperature TH using an estimation formula which differs depending on the operation mode.
Claims18
A vehicular air conditioning device comprising:
- a compressor to compress a refrigerant;
- an air flow passage through which air to be supplied to a vehicle interior flows;
- a radiator to let the refrigerant radiate heat, thereby heating the air to be supplied from the air flow passage to the vehicle interior;
- a heat absorber to let the refrigerant absorb heat, thereby cooling the air to be supplied from the air flow passage to the vehicle interior;
- and
- a control device,
- whereby the control device changes and executes a plurality of operation modes to condition the air of the vehicle interior,
- wherein the control device calculates a heating temperature TH being a temperature of the air on a leeward side of the radiator and uses the heating temperature TH in control, and calculates the heating temperature TH using an estimation formula which differs depending on an operation mode,
- wherein the control device performs a calculation of a first-order lag of a time constant Tau different depending on the operation mode to calculate the heating temperature TH.
Dependencies are inferred from the claim text.