An air conditioner for a vehicle includes a refrigeration cycle, a heating unit and a control unit. The refrigeration cycle includes an air-conditioning evaporator, a chilling evaporator, an air-conditioning side flow path, a detour flow path and an air-conditioning flow rate adjustment unit. The control unit includes a determination unit that determines whether a condensation condition is satisfied when a refrigerant is flowing through the chilling evaporator via the detour flow path in a state where an inflow of a refrigerant into the air-conditioning evaporator is prohibited. When the determination unit determines that the condensation condition is satisfied, the control unit controls the air-conditioning flow rate adjustment unit to allow an inflow of a refrigerant into the air-conditioning evaporator as a condensation suppression operation for suppressing condensation of a refrigerant in the air-conditioning evaporator.

A cooling system for a hybrid vehicle that cools cooling medium for an air conditioner without reducing a driving performance, irrespective of a running condition. A detector detects data relating to operating conditions of a high-current device cooling circuit, a supercharger cooling circuit, a high-current device, an engine, a supercharger, and the hybrid vehicle. A controller selects one of a first water passage and a second water passage by manipulating a control valve based on the data collected by the detector, in such a manner as to maximize an amount of heat transferred from the cooling medium to high-current device cooling water or supercharger cooling water.

A method for preserving autonomous operation of a transport climate control system is provided. The method includes the controller determining whether a regulatory compliance at a current location is restricting and/or preventing the use of a prime mover for powering the transport climate control system while a transport unit is in transit. When the controller determines that use of the prime mover is not being restricted or prevented because of a regulatory compliance, the method includes operating the transport climate control system and the transport power system in an energy harvesting operation mode for storing excess power generated by the prime mover into the auxiliary energy storage. When the controller determines that use of the prime mover is being restricted or prevented because of a regulatory compliance, the method includes the controller instructing the auxiliary energy storage to provide power to the transport climate control system.

Methods and systems are provided for an air conditioning system. An example method of determining current through a compressor suction valve in a vehicle air conditioning (AC) system is provided, the AC system comprises an evaporator fan and the method includes determining the speed of the evaporator fan and determining the current through the suction valve based on the speed of the evaporator fan.

A refrigerant system includes a compressor, multiple pressure sensors, multiple refrigerant flow valves, and a processor. The compressor is configured to present a refrigerant at a first pressure. A first pressure sensor is configured to measure the first pressure of the refrigerant. A second pressure sensor is configured to measure a second pressure of the refrigerant. The refrigerant flow valves have a plurality of flow valve positions. The processor is configured to calculate a delta value as a difference between the first pressure and the second pressure, calculate an expected delta value between the first pressure and the second pressure based on a ratio of a low-side density of the refrigerant at the compressor to the flow valve positions, and perform a remedial action where the delta value deviates from the expected delta value by greater than a threshold value.

The present invention relates to a circuit (1) for a vehicle configured to be traversed by a coolant (FR). The circuit (1) comprises a main branch (2) comprising a main heat exchanger (3) comprising at least one inlet (100; 101, 102) for coolant (FR). The circuit (1) comprises a first branch (4) and a second branch (5) that extend between a point of divergence (6) and a point of convergence (7). The first branch (4) comprises a first compression device (9), a first expansion member (8) and a first heat exchanger (10) configured to thermally treat an electrical storage device (11) of the vehicle. The second branch (5) comprises a second compression device (13), a second expansion member (12) and a second heat exchanger (14) configured to thermally treat a passenger compartment of the vehicle. The circuit (1) comprises a high-pressure line (200) that comprises a first portion (201) extending between an outlet (31) of the first compression device and the inlet (100; 101, 102). The high-pressure line (200) comprises a second portion (202) extending between an outlet (38) of the second compression device and the inlet (100; 101, 102). The first portion (201) is of a first length (X1) and the second portion (202) is of a second length (X2). A first distance (Y1) separates the outlet (31) of the first compression device from the point of convergence (7) and a second distance (Y2) separates the outlet (38) of the second compression device from the point of convergence (7). The first distance (Y1) is more than half of the first length (X1) and the second distance (Y2) is more than half of the second length (X2).

A temperature control system includes: a first cooling circuit, where a first cooling medium is circulated in the first cooling circuit, and the first cooling circuit is configured to cool a first structural unit; a second cooling circuit, where a second cooling medium is circulated in the second cooling circuit, and the second cooling circuit is configured to cool a second structural unit; and a heat exchanger, separately connected to the first cooling circuit and the second cooling circuit, and configured to perform heat exchange between the first cooling medium and the second cooling medium, where the first cooling circuit includes a bypass branch, and the bypass branch is connected in parallel to the heat exchanger. According to the temperature control system, heat dissipation efficiency for an inverter and an overall heat dissipation capability for a powertrain are improved.

A control system includes a refrigerant recovery module and at least one of a valve control module and a compressor control module. The refrigerant recovery module is configured to generate a refrigerant recovery signal to initiate a recovery of refrigerant from a first heat exchanger of a thermal system for an electric vehicle, and to stop the refrigerant recovery based on a temperature of refrigerant circulating through the first heat exchanger. The valve control module is configured to open a first valve to allow refrigerant to flow through the first heat exchanger in response to the refrigerant recovery signal. The compressor control module is configured to increase a speed of a compressor disposed upstream from the first heat exchanger in response to the refrigerant recovery signal.

A recreational vehicle air conditioner and methods of operating a recreational vehicle air conditioner are provided. The recreational vehicle air conditioner may be configured for, and the method may include, receiving a mode selection input comprising one of a thermostat mode and a direct control mode. The recreational vehicle air conditioner may further be configured for, and the method may further include, operating the recreational vehicle air conditioner independently of an external display device when the mode selection input is thermostat mode and operating the recreational vehicle air conditioner in response to one or more commands from the external display device when the mode selection input is direct control mode.

A thermal management system control method for a vehicle is disclosed. An embodiment of the present disclosure provides a thermal management system control method for a vehicle, including: (A) a process in which a controller determines whether a track driving mode is selected based on data detected from a data detector before track driving of the vehicle, and determines an alignment position of a valve; (B) a process in which the controller, through the process (A), determines the alignment position of the valve to control a water pump or an oil pump, and operates an air conditioner; and (C) a process in which, when the air conditioner is operated through the process (B), the controller controls a battery chiller expansion valve and a compressor, and ends the control.