Visteon Global Technolgoies, Inc.

Ford Global Technolgoies, LLC

Other

Yong Huang

Shane A Harte

Vipen Khetarpal

Lavlesh Sud

Srinivas S Pitla

David Henry Herder

Guntis Viktors Strikis

Mirza Qadir M Baig

Michael Gregory Theodore, Jr

Kanwal Bhatia

Thomas Paul Gielda

Brian Robert Kelm

Rodney James Callahan

Alfred Lim Poy

Lawrence William Smith

Andrew J Klapp

Bjoern Fagerli

Laviesh Sud

An oil separator for a compressor is shown, wherein an oil separating efficiency is maximized and a material cost, a weight, and an assembly time are minimized.

Oil separator for a fluid displacement apparatus

A control system for a variable displacement compressor uses a mechanical valve to minimize energy consumption in an air conditioning system. The control system can also provide instantaneous indications to the vehicle controller of air conditioning power consumption to avoid engine loading. Controls are also used to contain oil within the compressor and to minimize its presence downstream of the compressor into the gas cooler and evaporator parts of the system.

Controls for variable displacement compressor

An air conditioning system for cooling a vehicle passenger compartment is disclosed. The system includes an air duct, a refrigerant circuit, a variable displacement compressor, and a controller. The air duct directs air conditioned air into the vehicle passenger compartment. The refrigerant circuit circulates a refrigerant, wherein a first portion of the circuit is exposed to the air duct and a second portion of the circuit is exposed to air external of the vehicle passenger compartment. The variable displacement compressor is in fluid communication with the refrigerant circuit, wherein the compressor has a control valve for regulating refrigerant flow between a compressor crankcase and a compressor discharge chamber and between the compressor crankcase and a compressor suction chamber. The controller in electrical communication with the variable displacement compressor for controlling refrigerant flow and a displacement of the compressor by actuating the control valves.

Control strategy of a variable displacement compressor operating at super critical pressures

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

A swashplate type compressor that includes one or more pistons having an extra support surface for receiving a side load is provided. In a first preferred embodiment of the piston, a rotational restrictor that overlaps the head region is utilized as the extra support surface. In a second preferred embodiment, a support projection, separate from the head region, is utilized as the extra support surface. The extra support surface of the piston of the present invention receives a portion of the side load exerted on the piston, thereby relieving some of stress applied to the head region.

Swashplate compressor piston having an extra support surface

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 lubrication passage formed in a cylinder block and crankcase, and a spray nozzle disposed at the crankcase end of the lubrication passage. The lubrication passage provides fluid communication between an oil sump and the spray nozzle, and the spray nozzle causes lubricating oil to be efficiently distributed as a fine mist or spray to the crank chamber. The lubrication passage and spray nozzle maximize the flow of refrigerant gas and lubricating oil to the crank chamber under all operating conditions providing cooling and lubrication to the internal moving components within the crankcase.

Lubrication passage and nozzle for swash plate type 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 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 variable swash plate compressor ( ), including a housing ( ), a top inlet ( A), a bottom inlet ( B), a pumping chamber ( ), a compression piston ( ), a top outlet ( A), a bottom outlet ( B), a drive shaft ( ), a control surface element ( ), a pinnacle element ( ), a swash plate ( ), a bore ( ) and a pocket ( ) formed in the swash plate ( ), a pivot element tip ( ) and fulcrum piston assembly ( ). Wherein the angle of the swash plate ( ) relative to the drive shaft ( ) is varied to bring about a larger or smaller travel path of the double-sided compression piston ( ) and thereby increasing or decreasing the output capacity of the variable swash plate compressor ( ).

Variable swash plate compressor

A vehicular air conditioning system ( ) includes a compressor ( ) having a crank chamber ( ), a suction chamber ( ), and a discharge chamber ( ). A refrigerant mixture includes carbon dioxide and oil. A conduit ( ) connects the discharge chamber ( ) of the compressor ( ) directly with an oil separator ( ) to route the refrigerant mixture directly to the oil separator ( ). A capillary tube ( ) is connected between the oil separator ( ) and the crank chamber ( ) of the compressor ( ) to cool and throttle oil enroute directly to the crank chamber ( ) of the compressor ( ).

Refrigeration circuit for vehicular air conditioning system

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 (,).

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Ann Arbor, MI, United States of America

Yong Huang