A safety device for a vehicle can include an impulse sensor configured to sense an impact to the vehicle and generate an impulse signal based on the impact, a compressor configured to compress refrigerant for a refrigeration cycle of the vehicle, and a safety valve connected to the compressor and configured to receive the impulse signal from the impulse sensor, and in response to the impulse signal exceeding a predetermined value, open the safety valve to place an inner space of the compressor in communication with an outside of the compressor for discharging the refrigerant outside the vehicle.

The present disclosure relates to a system for controlling an air flow rate into a vehicle engine room. The system includes: an air intake port receiving an exterior air at a front portion of the vehicle and supplying the air into the engine room; air ducts formed at both sides of the air intake port and introduce the exterior air into a wheel side in order to improve aerodynamic characteristic; a control valve configured to selectively convey the air flowed in the air intake port into the air ducts; a radiator disposed between the air intake port and the engine room; and a control portion configured to control the control valve based on an operating state of vehicle. The air ducts are selectively communicated with the air intake port and disposed at upstream of the radiator.

An electric vehicle includes an electric motor, a power storage device, a control device, and a refrigerant circuit. The refrigerant circuit includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a first expansion valve, a second expansion valve, and a second indoor heat exchanger. The control device repeats an operation of performing the other of a first operation and a second operation after performing one thereof when a remaining capacity of a power storage device is equal to or larger than a predetermined value. In the first operation, the first expansion valve is not decompressed and the second expansion valve is decompressed. In the second operation, the first expansion valve is decompressed and the second expansion valve is not decompressed.

Methods and systems are provided for adjusting a ratio of friction to regenerative brake effort and running an electric air conditioning compressor to collect condensed water for water injection into an engine. In one example, a method may include adjusting the air conditioning compressor load of the electric AC system and the ratio of friction to regenerative brake effort based on a water level in a water storage tank of the water injection system. Further, the method may include directing energy from regenerative braking to a battery and/or to the AC compressor in response to the battery state of charge.

The performance of a transport refrigeration system having a transport refrigeration unit powered by a diesel engine is optimized by matching a capacity output of the transport refrigeration unit to an available shaft power of the diesel engine.

A compressor compresses a refrigerant. A eutectic plate cools a refrigerated space. An evaporator cools the refrigerated space. A mixture of the refrigerant and an oil flows through the evaporator and the eutectic plate. A control module controls the compressor, a first valve that permits or prevents flow of the mixture to the eutectic plate, and a second valve that permits or prevents flow of the mixture to the evaporator. In response to a temperature of the refrigerated space being greater than a predetermined temperature, the control module: increases a speed of the compressor; operates the compressor at the increased speed for a predetermined time period; after the predetermined period: opens the second valve; and closes the first valve, where the control module opens the second valve before closing the first valve, and decreases the speed of the compressor after closing the first valve.

A method for controlling coolant flow and cooling of a heater core to be used as a cold storage device or heater core cold storage (HCCS) cooling of a vehicle to extend an engine auto-stop period includes determining if at least one predetermined condition is met for HCCS cooling, and charging a heater core for a predetermined charge period in preparation for HCCS cooling when the at least one predetermined condition is met. The charge is held in the heater core until a trigger event occurs and HCCS cooling is initiated. HCCS cooling is then performed until a predetermined use period expires.

A vehicle system includes a refrigerant loop with a specific arrangement of valves and evaporators or heat exchangers to reduce the number of valves necessary. The vehicle system includes a refrigerant loop that includes a first thermal expansion valve downstream of a condenser and upstream of a first evaporator. A second thermal expansion valve is downstream of the condenser and upstream of a second evaporator. A third thermal expansion valve is upstream of a battery chiller. This arrangement allows for the valves to be simplified such that none of the thermal expansion valve include a binary shut-off valve. A multi-flow position valve may be positioned at a location that combines the outlet of the first and second evaporators.

A thermal system for a vehicle includes a compressor configured to pressurize refrigerant that selectively flows through a chiller for battery coolant and an evaporator for cabin cooling. The system further includes a controller programmed to, responsive to cabin cooling demand becoming zero, change from adjusting compressor speed responsive to changes in an evaporator temperature to adjusting compressor speed responsive to changes in a chiller refrigerant pressure.

A system including mode and battery modules. The mode module, based on parameters, determines whether to operate in a shore power, engine or battery mode. One or more batteries are charged based on received utility power while in the shore power mode. The batteries, while in the engine mode, are charged based on power received from a power source. The battery module, while operating in the battery mode, determines a speed based on a temperature within a temperature controlled container of a vehicle and a state of charge of the batteries. The compressor is run at the speed while in the battery mode. While in the battery mode, the batteries are not being charged based on power from a shore power source and the power source from which power is received during the engine mode.