A method of controlling an air-cargo transport refrigeration unit to regulate a compressor speed and a condenser fan speed is provided. Also, a method of controlling an air-cargo transport refrigeration unit based on determining an in-flight condition of the refrigeration unit is provided.

A control method for a vehicle includes determining whether an internal combustion engine is overheated based on driving information of the vehicle and cooling information of a passenger compartment while the vehicle is driving and an HVAC system is operating in a cooling mode, and controlling an alternator or an actuator of a switching door to reduce a cooling capacity provided by the HVAC system when it is determined that the internal combustion engine is overheated.

An air conditioning system for use with a vehicle is configured to provide conditioned air. The air conditioning system includes a controller configured to vary a flow of the conditioned air and the controller is arranged to be cooled by the conditioned air.

The refrigeration device has an inverter device, an electric compressor, a condenser, an evaporator, a condenser fan, an evaporator fan, and a controller. An AC output from a power generator is supplied to the inverter device. A refrigerant discharge amount of the electric compressor is controlled by the inverter device. The refrigerant from the electric compressor flows in the condenser, and the condenser causes the refrigerant to radiate heat to outside air outside a container. The refrigerant from the condenser flows in the evaporator, and the evaporator cools an interior of the container. The condenser fan is driven by a DC output from a DC power supply device and blows air to the condenser. The evaporator fan is driven by the DC output from the DC power supply device and blows air to the evaporator. The controller controls at least the electric compressor, the inverter device, and the engine.

A vehicle heating, ventilating, and air conditioning (HVAC) system can be configured for operation in a vehicle having a start-stop system. The start-stop system can automatically switch a vehicle engine between ON and OFF states to save fuel economy. A compressor within the HVAC system can be controlled based on a request to switch the engine from an OFF state to an ON state. It can be determined whether an air conditioning system is in an active state, whether the engine is in an OFF state due to the start-stop system, whether there is an engine OFF cancel request to switch the engine to an ON state, and whether the engine OFF cancel request is due to an HVAC request. If the engine OFF cancel request is not due to an HVAC request, the engine can be switched to an ON state while the compressor remains in an OFF state.

Methods and systems are provided for adjusting an amount of friction brake effort and an air conditioning compressor load to collect water for water injection into an engine. In one example, a method may include adjusting the AC compressor load of a mechanical air conditioning system and an amount of friction brake effort based on a water level in a water storage tank of the water injection system. Further, the method may include adjusting a ratio of the AC compressor load to friction brake effort to deliver a driver demanded brake effort.

An idle mitigation system for a bucket truck which includes an alternate source of power for the vehicle air conditioner which is coupled to the hydraulic system of the bucket truck which is hydraulic system is alternately powered by an electric motor which when run in reverse can charge batteries.

The torque of a vehicular air-conditioning compressor is predicted by the steps of starting a vehicle air-conditioning system having an engine and engine control module for controlling multiple vehicle functions, calculating a steady state torque value using an rpm value from the engine, calculating an engine RPM transient torque value using the rpm value from the engine, calculating a electronic control valve current transient torque value using a current value applied to an electronic control valve, selecting a final torque value from a group consisting of the steady state torque value, the engine RPM transient torque value, and the electronic control valve transient torque value, and providing a final torque value to the vehicle engine control module to control a predetermined vehicle function.

A device and a method for a controlling compressor of vehicles may include a cabin temperature sensor, an outdoor temperature sensor, an evaporator temperature sensor detecting a temperature of a cooling medium in an evaporator, an engine speed sensor detecting rotation speed of an engine, and a throttle position sensor detecting a throttle opening, an air conditioning system including a condenser condensing and liquefying the cooling medium, an evaporator, the compressor, a temperature control door controlling a temperature of an air flowed in a cabin, an intake door selectively flowing an inner air or an outer air in the cabin, a blower blowing the air to the intake door, and a controller determining acceleration mode and an allowable temperature at each acceleration mode when an acceleration condition occurs, and decreasing an operation of the compressor according to a difference between the evaporator temperature and the allowable temperature.

A vehicle power adjusting device, applied in auxiliary dynamic loads on a vehicle comprises a control chip, a temperature sensor, a speed detecting wire, and a relay; when the power for starting the vehicle is insufficient, auxiliary dynamic load is closed to release power, such that the power for starting is sufficient, so as to decrease the accelerating time, reduce toxic emission and enable the auxiliary dynamic load by using the surplus power during the cruising vehicle and the wasted power during the decelerating vehicle, thereby achieving the purpose of reducing the energy consumption, having powerful starting, completing combustion, reducing exhaust gas, and also saving fuel, reducing carbon emission and protecting environment effects.