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.

 
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> High-efficiency, large angle, variable displacement hydraulic pump/motor

> Fuel pumping unit, with a plurality of commutator brush assemblies with engaging members for restricting brush movement toward the pump motor section

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