Abstract: A method for controlling the temperature in a vehicle cabin, while the vehicle engine is turned off, includes the following steps: importing a State-of Charge information of a vehicle traction battery, an outside temperature, and inside temperature of the cabin into an electronic controller; calculating a normal electric power required for operating an HVAC system in a Normal mode; calculating a maximum operation time of the HVAC system in the Normal mode based on the State-of-Charge information; displaying the maximum operation time on a display; reading an operator input selecting one mode of at least the Normal mode and a first Eco mode of the HVAC system, wherein in the first Eco mode the HVAC system operates at a reduced electric power compared to the Normal mode; and operating the HVAC system in accordance with the operator input. A suitable HVAC system includes an appropriate user interface.

Abstract: A method for controlling the temperature in a vehicle cabin, while the vehicle engine is turned off, includes the following steps: importing a State-of Charge information of a vehicle traction battery, an outside temperature, and inside temperature of the cabin into an electronic controller; calculating a normal electric power required for operating an HVAC system in a Normal mode; calculating a maximum operation time of the HVAC system in the Normal mode based on the State-of-Charge information; displaying the maximum operation time on a display; reading an operator input selecting one mode of at least the Normal mode and a first Eco mode of the HVAC system, wherein in the first Eco mode the HVAC system operates at a reduced electric power compared to the Normal mode; and operating the HVAC system in accordance with the operator input. A suitable HVAC system includes an appropriate user interface.

Abstract: The present application relates to auxiliary HVAC systems for vehicles. In some embodiments, an auxiliary climate control system for a vehicle comprises a blower and heat exchanger assembly including a blower, an evaporator, an air flow actuator, and a heater core. The blower and heat exchanger assembly has a generally ‘Z’ shaped configuration.

Abstract: An auxiliary climate control system may include a plurality of evaporators arranged in series. The auxiliary climate control system may comprise a first evaporator coupled to a first compressor and a first condenser, a second evaporator coupled to a second compressor and a second condenser, and a blower configured to move air past the first evaporator and the second evaporator. The first compressor may be configured to operate when a vehicle engine is running and the second compressor is configured to operate on power from a source independent of the running engine such that the second compressor may operate when the engine is not running.