Abstract: In various implementations, a heat exchanger system may include one or more flow paths. At least one of the flow paths may be associated with more than one pass and/or fluid flow through the flow path may be restricted. A setting of the heat exchanger system may include associations between flow path(s) and/or pass(es). A setting for the heat exchanger system may be determined, and the heat exchanger system may be allowed to operate in the determined setting, in some implementations.

Abstract: In various implementations, a heat pump may include heating operations and defrost operations. The heat pump may monitor cycle time(s) for one or more of the operations. Defrost operation(s) in the heat pump may be automatically adjusted based at least partially on cycle times.

Abstract: An easily portable and quick to assemble and disassemble windscreen for use with a vehicle such as a snowmobile or all-terrain vehicle.

Abstract: An apparatus for reducing discharge pressure includes a compensator reservoir and a compensator line. The compensator line connects the compensator reservoir and a liquid line. The liquid line connects an outdoor heat exchanger and an indoor heat exchanger of a reversible HVAC system. The compensator line includes a connection to the compensator reservoir and a connection to the liquid line. A first expansion device is disposed in the liquid line and configured to only act on refrigerant flowing towards the outdoor heat exchanger. A second expansion device disposed in the liquid line and configured to only act on refrigerant flowing towards the indoor heat exchanger. The compensator is operable to receive refrigerant, driven by pressure, from the HVAC system, and further operable to allow refrigerant to flow back into the HVAC system.

Abstract: One embodiment of the present disclosure comprises a method of managing defrost operations in HVAC systems. In one embodiment a primary defrost operation comprises allowing a cooling cycle of the heat pump and a secondary defrost operation comprises allowing fans of the heat pump to operate at a low speed.

Abstract: In various implementations, a heat pump may include heating operations and defrost operations. The heat pump may monitor cycle time(s) for one or more of the operations. Defrost operation(s) in the heat pump may be automatically adjusted based at least partially on cycle times.

Abstract: An apparatus for reducing discharge pressure includes a compensator reservoir and a compensator line. The compensator line connects the compensator reservoir and a liquid line. The liquid line connects an outdoor heat exchanger and an indoor heat exchanger of a reversible HVAC system. The compensator line includes a connection to the compensator reservoir and a connection to the liquid line. A first expansion device is disposed in the liquid line and configured to only act on refrigerant flowing towards the outdoor heat exchanger. A second expansion device disposed in the liquid line and configured to only act on refrigerant flowing towards the indoor heat exchanger. The compensator is operable to receive refrigerant, driven by pressure, from the HVAC system, and further operable to allow refrigerant to flow back into the HVAC system.

Abstract: A vehicle seat propping device for propping a vehicle seat in a pivoted configuration includes a first plate that is configured to couple to an interior surface of a vehicle proximate to a hinged seat. A bar is hingedly coupled to and extends from the first plate. A grasp is coupled to the bar distal from the first plate. The grasp is configured to reversibly couple to a frame of the seat when the seat is pivoted. The grasp is configured to reversibly couple to the frame of the seat to prop the seat in a pivoted configuration. Hands-free access is permitted to objects that are positioned under the seat, such as a gas tank.

Abstract: Systems and methods are disclosed that involve detecting a flammable refrigerant associated with a heating, ventilating, and air conditioning (HVAC) system. In one instance a damper covers an access port allowing a single sensor to monitor at least two separate spaces. In another instance, a multi-probe sensor allows a single sensor to monitor at least two separate spaces. Other systems and methods are presented.

Abstract: In various implementations, compressor operation in an air conditioner may be managed by maintaining oil viscosity, a temperature differential, compressor sump temperature, and/or suction pressure. Properties of the air conditioner or portions thereof, such as the compressor, may be determined. To manage compressor operations, operation(s) of the air conditioner may be adjusted based on one or more of the determined properties.

Abstract: Systems and methods are disclosed that involve detecting a flammable refrigerant associated with a heating, ventilating, and air conditioning (HVAC) system. In one instance a damper covers an access port allowing a single sensor to monitor at least two separate spaces. In another instance, a multi-probe sensor allows a single sensor to monitor at least two separate spaces. Other systems and methods are presented.

Abstract: In various implementations, compressor operation in an air conditioner may be managed by maintaining oil viscosity, a temperature differential, compressor sump temperature, and/or suction pressure. Properties of the air conditioner or portions thereof, such as the compressor, may be determined. To manage compressor operations, operation(s) of the air conditioner may be adjusted based on one or more of the determined properties.

Abstract: In various implementations, compressor operation in an air conditioner may be managed by maintaining oil viscosity, a temperature differential, compressor sump temperature, and/or suction pressure. Properties of the air conditioner or portions thereof, such as the compressor, may be determined. To manage compressor operations, operation(s) of the air conditioner may be adjusted based on one or more of the determined properties.

Abstract: An air conditioning system includes an exterior housing, and a motor having fan blades rotatably coupled thereto located within the exterior housing. The air conditioning system further includes a controller coupled to the motor and configured to, based upon climate conditions proximate the exterior housing, alternate between an ON cycle during which the fan blades are rotated and an OFF cycle during which the fan blades are not rotated.

Abstract: Systems and methods are disclosed that involve detecting a flammable refrigerant associated with a heating, ventilating, and air conditioning (HVAC) system. In one instance a damper covers an access port allowing a single sensor to monitor at least two separate spaces. In another instance, a multi-probe sensor allows a single sensor to monitor at least two separate spaces. Other systems and methods are presented.

Abstract: An apparatus and method for reducing discharge pressure in a Heating, Ventilating, and Air Conditioning system. The apparatus has a compensator reservoir and a compensator line. The compensator line connects the compensator reservoir and a liquid line. The liquid line connects a condenser and an evaporator. The compensator line has a connection to the compensator reservoir and a connection to the liquid line. In the method, a controller checks for one or more conditions indicating a likelihood of high discharge pressure. The controller finds a condition indicating a likelihood of high discharge pressure. In response to finding the condition, the controller closes a compensator valve after a set amount of time. The controller reopens the compensator valve.

Abstract: In various implementations, compressor operation in an air conditioner may be managed by maintaining oil viscosity, a temperature differential, compressor sump temperature, and/or suction pressure. Properties of the air conditioner or portions thereof, such as the compressor, may be determined. To manage compressor operations, operation(s) of the air conditioner may be adjusted based on one or more of the determined properties.

Abstract: A bypass system for a transmission is disclosed. A transmission casing defines a first aperture and a second aperture. A valve assembly includes a housing defining a first port and a second port. The housing defines an inlet in fluid communication with the first port for guiding a fluid into the transmission casing and an outlet in fluid communication with the second port for guiding the fluid out of the transmission casing. The valve assembly further includes an actuation device disposed in the housing. The housing is mounted to the transmission casing such that the first port and the first aperture cooperate with each other for routing the fluid into the transmission casing directly from the valve assembly, and the second port and the second aperture cooperate with each other for routing the fluid out of the transmission casing directly into the valve assembly.

Abstract: In various implementations, a heat exchanger system may include one or more flow paths. At least one of the flow paths may be associated with more than one pass and/or fluid flow through the flow path may be restricted. A setting of the heat exchanger system may include associations between flow path(s) and/or pass(es). A setting for the heat exchanger system may be determined, and the heat exchanger system may be allowed to operate in the determined setting, in some implementations.

Abstract: In various implementations, an air conditioner may include a heat exchanger having one or more flow paths. At least one of the flow paths may be associated with more than one pass and/or fluid flow through the flow path may be restricted. A setting of the heat exchanger may include associations between flow path(s) and/or pass(es). A setting for the heat exchanger may be determined and the heat exchanger may be allowed to operate in the determined setting, in some implementations.