Visteon Global Technolgoies, Inc.

Ford Global Technolgoies, LLC

Other

Ford Motor Company Limited

Shane A Harte

Yong Huang

Lavlesh Sud

Guntis Viktors Strikis

Vipen Khetarpal

David Henry Herder

Larry Dean Elie

John Matthew Ginder

Thomas Paul Gielda

Kanwal Bhatia

David Keith Johnson

Srinivas S Pitla

Vipen K Khetarpal

Rodney James Callahan

Franck Vouzelaud

Bjoern Fagerli

Lawrence William Smith

Andrew J Klapp

Laviesh Sud

Alex David Cohen

Ronald J Mangiapane

Homam Albaroudi

Vivek Dwivedi

A method for controlling a vehicle air-conditioning system for cooling an interior of a vehicle is disclosed. The vehicle air conditioning system has a compressor coupled to an electronic control valve. The method includes reading a user manipulatable switch, determining a desired vehicle interior temperature based on the read user manipulatable switch, reading a plurality of sensors indicative of an interior and an exterior climate of the vehicle, determining a heat load on the vehicle air conditioning system, determining a desired evaporator discharge temperature, evaluating a humidity level inside the vehicle by determining a humidity ratio, filtering the updated electronic control valve duty cycle to obtain a new electronic control valve duty cycle based on the desired evaporator discharge temperature, and sending the new electronic control valve duty cycle to a compressor controller, wherein the controller is in communication with the electronic control valve and commands the valve to operate at the new duty cycle.

Electronic control strategy for A/C compressor

The present invention involves an air cycle system having a preventative icing feature for climate control of a vehicle cabin. The air cycle system includes a compressor for compressing air, an intercooler for cooling compressed air, an expander for expanding air pressure, and a means for controlling conditions of air at atmospheric pressure. The compressor has a compressor inlet for ambient air and a compressor outlet for compressed air. The intercooler has an intercooler inlet for receiving compressed air from the compressor and an intercooler outlet for exiting intercooled air. The expander has an expander inlet for receiving air from the intercooler and has an expander outlet for exiting air at atmospheric pressure at an expanded condition. The expanded condition of the air at atmospheric pressure is above the icing temperature of water to prevent icing at the expander outlet. Means or controlling the conditions of the air at atmospheric pressure are performed to maintain the air flow at the expander outlet to temperatures greater than the icing conditions at which water freezes.

System and method of preventing icing in an air cycle system

A vehicle heating and cooling system having a first coolant loop selectively connecting an engine cooling system with a heater core or a first coolant/refrigerant heat exchanger, a second coolant loop connecting a second coolant/refrigerant heat exchanger and the heater core to warm a passenger compartment of the vehicle. The system also includes a refrigerant loop that provides for conventional cooling of the passenger compartment of the vehicle, as well as operating as a heat pump, together with the coolant loops, to provide heat to the vehicle passenger compartment.

Dual loop heat and air conditioning system

A variable displacement swash plate type compressor which incorporates a lubricant pump coupled to one end of the drive shaft of the compressor, wherein the lubricant pump provides positive lubricant flow within the compressor and facilitates the lubrication of compressor components.

Lubrication pump for a swash plate type compressor

A variable displacement swash plate type compressor which incorporates a conduit formed in the cylinder block to provide fluid communication between a crank chamber and one or more cylinders to eliminate the need for an orifice tube in fluid communication between a discharge chamber and the crank chamber and to increase the flow of refrigerant gas and lubricating oil to the crank chamber under all operating conditions and to increase the internal fluid pressure in the crank chamber.

Crankcase pressurizing conduit for a swash plate type compressor

The present invention relates to a piston for use in a swashplate type compressor. The piston includes a void in the exterior surface of the head region that is positioned at a distance from a region that receives a side load during operation of the compressor. In preferred embodiments, the void comprises a helical groove that extends along a path parallel to the region receiving the side load, and a recess or depression positioned adjacent the region receiving the side load.

Piston for a swashplate reciprocating compressor

A variable displacement swash plate type compressor which incorporates a lubrication passage formed in the drive shaft, wherein the lubrication passage provides fluid communication between a discharge chamber and a crank chamber. The lubrication passage maximizes the low of refrigerant gas and lubricating oil to the crank chamber under all operating conditions providing cooling and lubrication to the internal moving components in the crank chamber. The lubrication passage facilitates the efficient flow of lubricating oil from the discharge chamber to the crank chamber.

Lubrication passage for swash plate type compressor

A variable displacement swash plate type compressor which incorporates an impeller attached to a drive shaft, and a plurality of blades for, efficiently directing lubricating oil to a shaft seal. The impeller provides a mist of lubricating oil to the crankcase, and the blades direct lubricating oil to a shaft seal. The impeller and blades maximize the distribution and flow of lubricating oil to the crank chamber under all operating conditions providing cooling and lubrication to the internal moving components within the crankcase.

Lubrication fins and blades for a swash plate type compressor

An electromagnetic clutch ( ) for an air conditioning compressor includes a generally cylindrical pulley ( ) rotatably mounted on a comressor housing ( ) and having an annular friction surface ( ) in a cavity ( ). A driven member ( ) is mounted on a compressor shaft ( ) and has a leg ( ) with an annular friction surface ( ) positioned radially adjacent the cavity friction surface to form an annular space ( ) therebetween. A quantity of flowable magnetic material ( ) is provided in the annular space and a magnetic coil ( ) is fixed on the housing adjacent thereto. When electrical power is applied to the magnetic coil ( ), magnetic flux is generated in the annular space ( ) polarizing the magnetic material and frictionally coupling the friction surfaces to cause the pulley ( ) to rotate the driven member ( ). A divider ( ) can be positioned between the legs ( ) to provide additional annular spaces ( ) for the magnetic material ( ).

Magnetic powder clutch

A variable capacity swash plate type compressor , which incorporates an inlet port disposed in a crankcase leading to a crank chamber . The inlet port places the crank chamber in the active flow path of a refrigerant gas for the compressor and eliminates the need for an orifice tube in fluid communication with a discharge chamber and the crank chamber thereby increasing the maximum capacity of the compressor

Control valve means in an external conduit of a variable displacement swash plate type compressor

An air conditioning (A/C) system and method of controlling same is provided for a vehicle. The A/C system includes an evaporator, a desiccant dryer located downstream of the evaporator, and a compressor fluidly connected to the air evaporator. The A/C system also includes a plurality of sensors to provide inputs relating to temperature of the evaporator and relative humidity of an occupant compartment of the vehicle. The A/C system further includes an electronic control unit electrically connected to the sensors to receive the inputs therefrom and electrically connected to the desiccant dryer and the compressor to turn the desiccant dryer and the compressor On and Off to control the temperature and relative humidity of air to the occupant compartment.

Air conditioning system and method of controlling same

A piston having anti-rotation for a swashplate compressor includes a body portion extending axially and a connecting portion spaced radially from a longitudinal axis of the body portion and extending axially. The piston also includes a pair of opposed anti-rotation wings extending radially from one end of the body portion between the connecting portion and the longitudinal axis of the body portion.

Piston having anti-rotation for swashplate compressor

A variable capacity swash plate type compressor,incorporates a pressure relief valve,in fluid communication with a suction chamber,and a crank chamber,. The pressure relief valve,prevents over pressurization in the crank chamber,to minimize friction and forces acting on the components of the compressor

Variable capacity swash plate type compressor having pressure relief valve

A compressor (,) for a vehicular air conditioning system includes a cylinder block (,) having a bore (,). A piston (,) is slidingly received in the bore (,). A cylinder head (,) is mounted on the cylinder block (,) and includes a suction chamber (,) and a discharge chamber (,). A valve plate (,) is provided between cylinder block (,) and the cylinder head (,). The valve plate (,) includes a suction port (,) and a discharge port (,). A suction valve (,) cooperates with the suction port (,) to permit refrigerant to enter the bore (,) from the suction chamber (,). The suction valve (,) includes a terminating portion (,A) and a flexing portion (,B). A recess (,) is formed in the cylinder block (,) adjacent the flexing portion (,B) of the suction valve (,). The recess (,) provides a linear clamping line (C) on the suction valve (,) between the valve plate (,) and the cylinder block (,).

Valve recess in cylinder block of a compressor

An electromagnetic clutch (,) for an air conditioning compressor includes a generally cylindrical pulley (,) rotatably mounted on a compressor housing (,) and having an annular friction surface (,), a driven member (,) mounted on a compressor shaft (,) and having an annular friction surface (,) positioned radially adjacent the first friction surface to form an annular space (,) therebetween. A quantity of flowable magnetic material (,) is provided in the annular space (,) and a magnetic coil (,) is fixed on the housing adjacent thereto. A control (,&prime;) connected to the magnetic coil (,) supplies electrical power from a power supply (,) to energize the magnetic coil and create magnetic flux in the annular space (,) polarizing the magnetic material and frictionally coupling the first and second friction surfaces (,) to cause the pulley (,) to rotate the driven member (,). The control (,&prime;) can pulse width modulate or ramp the supplied power for &ldquo;soft&rdquo; starting and/or stopping of the compressor.

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Farmington Hills, MI, United States of America

Shane A Harte