Abstract: A subassembly for a compressor controls a fluid flow of a fluid between a high-pressure region and a crank chamber pressure region and between the crank chamber pressure region and a suction pressure region of the compressor. The subassembly includes a first electrical control valve, a second electrical control valve, and an electrical control device. Each of the first electrical control valve and the second electrical control valve has a valve member arranged within a valve housing and displaceable between a pair of positions. The electrical control device is adapted to control, during operation of the compressor, a fluid flow between the high-pressure region and a crank chamber pressure region and between the crank chamber pressure region and the suction pressure region by controlling the positions of the valve members.

Abstract: A compressor having a front housing in which a crank chamber is formed. A cylinder block is coupled to an opposite surface facing the front housing and includes reciprocating pistons in a plurality of cylinder bores. A rear housing is coupled to an opposite surface facing the cylinder block, the rear housing includes a suction chamber and a discharge chamber formed therein. A rotating shaft 400 is inserted via centers of the front housing and the cylinder block, the shaft inserted into a swash plate. A diameter maintenance part is configured to constantly maintain a diameter based on an axis direction of the piston 220. A sensor part is configured to sense a speed and a stroke of the piston in accordance with a change in position of a position determination part positioned on one side of the diameter maintenance part.