Patent ID: 8931547
Filing Date: 2015-01-13
Classification: B60H,F25B,Y02T

Abstract:
1. A vehicle air conditioning system comprising: an electric powered refrigerant compressing device; an evaporator configured to receive refrigerant discharged from the electric powered refrigerant compressing device; an electric heater arranged downstream of the evaporator in an air passageway; an air temperature detector configured to determine a first air temperature at a position upstream of the evaporator in the air passageway and a second air temperature at a position between the evaporator and the electric heater; a cabin interior temperature controlling component configured to set a vehicle interior discharge air temperature at a position downstream of the electric heater in an air passageway to a target discharge air temperature; an upper limit electric power setting component configured to set an upper limit for electric power that can be supplied to the electric powered refrigerant compressing device and the electric heater; and an electric power distribution controller configured to distribute the upper limit electric power to the electric powered refrigerant compressing device and the electric heater based on a ratio of an upstream temperature difference and a downstream temperature difference, where the upstream temperature difference is based on a difference between the first air temperature and the second air temperature and the downstream temperature difference is based on a difference between the target discharge air temperature and the second air temperature.