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.

A method of feedthrough and overcurrent protection of a sealed compressor used in a transport climate control system (“TCCS”) is provided. The TCCS includes a climate control circuit with a sealed compressor. The sealed compressor includes an outer housing and an electrical motor within the outer housing. The method includes operating the sealed compressor to compress a working fluid by supplying electrical power to the electric motor of the sealed compressor via a sealed electrical feedthrough in the outer housing of the sealed compressor. The method also includes detecting an operating parameter of the sealed electrical feedthrough, and determining whether the sealed electrical feedthrough is in a melting condition based on the detected operating parameter. Also, the method includes adjusting operation of the climate control circuit upon determining that the sealed electrical feedthrough is in the melting condition until the sealed electrical feedthrough is no longer in the melting condition.

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.

Disclosed are climate systems and methods for control the climate systems. A climate system includes a plurality of compressors, a first heat exchanger disposed downstream of the compressors and a second heat exchanger disposed downstream of the first heat exchanger. The compressors and heat exchangers are fluidly connected by refrigerant lines to form a refrigerant circuit. The climate system also includes a controller that controls the operation of the compressors to draw back lubricant to the compressors without use of an oil equalization system.

Disclosed are climate systems and methods for control the climate systems. A climate system includes a refrigerant circuit, a first compressor, a second compressor, a first refrigerant-to-air heat exchanger, a second refrigerant-to-air heat exchanger, and a controller communicatively coupled to the first and second compressors. Respective outlets of the first and second compressors are fluidically coupled to the first refrigerant-to-air heat exchanger, the first refrigerant-to-air heat exchanger is fluidically coupled to the second refrigerant-to-air heat exchanger, and the second refrigerant-to-air heat exchanger is fluidically coupled with respective inlets of the first and second compressors. The fluidic connection between the second refrigerant-to-air heat exchanger and the first and second compressors includes a vertical split that is configured to mitigate or reduce the amount of compressor oil that migrates to dormant components.

A control module for a refrigeration system includes a startup mode control module that receives an off time of a compressor and an ambient temperature, determines whether the off time and the ambient temperature indicate that the compressor is in a flooded condition, and selects, based on the determination, between a normal startup mode and a flooded startup mode. A compressor control module transitions from the flooded startup mode to the normal startup mode after a predetermined period associated with operating in the flooded startup mode and operates the compressor at a first speed in the normal startup mode and operates the compressor at a second speed less than the first speed in the flooded startup mode.

A vehicle HVAC system includes a component within a refrigerant system in a vehicle HVAC system, a vibration sensor that generates a vibration signal indicating a vibration of the component, and a controller in communication with the vibration sensor to receive the vibration signal and the refrigerant system. The controller is configured to determine whether the vibration signal corresponds to a predetermined vibration value and for adjusting the operation of the refrigerant system to minimize the system noise if the vibration signal corresponds to the predetermined vibration value.

An electronic control valve for an HVAC system of a vehicle may include, in the electronic control valve configured to control the angle of a swash plate (angle with respect to the surface perpendicular to a rotation shaft of a compressor) in the compressor in an HVAC system, a solenoid, a plunger coupled to the solenoid member and configured to slid according to whether the solenoid is magnetized, a valve body formed integrally with the plunger, and configured to open or close a supply flow path through which a fluid flows into the compressor, a discharge flow path through which a fluid is discharged from the compressor, and a control flow path through a fluid flows to control the angle of the swash plate mounted inside the compressor, a diaphragm configured to operate the plunger by the pressure of refrigerant, and a return spring configured to return the plunger, and the solenoid is applied with power according to a vehicle target cooling load.

A torque estimating device of a gas compressor includes a reference torque characteristic storage unit that stores a reference torque characteristic of the gas compressor as a torque characteristic of the gas compressor in a specific operation state, a torque setting unit that sets a torque corresponding to an input speed of rotation of the gas compressor and pressure of a refrigerant discharged from the gas compressor, on the basis of the reference torque characteristic stored in the reference torque characteristic storage unit, and a torque correcting unit that sets a torque at startup of the gas compressor among the torques set by the torque setting unit, by correcting the torque set by the torque setting unit, in accordance with the speed of rotation and an elapsed time from startup.

The invention relates to a method for operating a device for the thermal conditioning of a motor vehicle interior, comprising: a refrigerant circuit comprising a compressor (C) and a heat exchanger (2) able to form an evaporator, the heat exchanger (2) being able to exchange heat with a flow of air intended to be conditioned, at least one bypass means (V1) able to divert from the heat exchanger (2) at least part of said air flow and which can be controlled in terms of position between the closed position in which no flow is diverted from the heat exchanger (2) and a multitude of open positions in which part of the flow is diverted from the heat exchanger (2) according to the position of opening, a mixing zone (ZM) for mixing the flow that has passed through the evaporator (2) and the flow of air diverted by the bypass means (V1) so as to obtain an air flow at a setpoint temperature.