![]() ![]() A common example of a swashplate application in a fluid pump is the compressor of a present-day automobile air conditioning system. The axial piston pump drives a series of pistons aligned parallel with a shaft through a swashplate to pump a fluid. Duke Engines has been working on such a platform since 1993. Internal combustion engines and Stirling engines have been built using this mechanism. The swashplate engine uses a swashplate in place of a crankshaft to translate the motion of a piston into rotary motion. The device has many similarities to the cam. The apparent linear motion can be turned into an actual linear motion by means of a follower that does not turn with the swashplate but presses against one of the disk's two surfaces near its circumference. The greater the disk's angle to the shaft, the more pronounced is this apparent linear motion. But instead the disk is mounted at an oblique angle, which causes its edge to appear to describe a path that oscillates along the shaft's length as observed from a non-rotating point of view away from the shaft. If the disk were aligned perpendicular to the shaft, then rotating the shaft would merely turn the disk with no reciprocating (or swashplate) effect. A swashplate consists of a disk attached to a shaft. ![]()
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