ENGINE STABILISER MECHANISM

摘要

A rotary piston engine or pump (110) has a trochoidal piston (112) eccentrically mounted in a housing (111), defining at least two working chambers (118, 119) corresponding to the outer enclosing curve of the piston. The piston is rotatable about a crankpin (113) of a crankshaft (114) that is mounted in the housing for rotation about its axis (AA). The piston and crankshaft rotate oppositely at a relative speed determined by a stabilising gear system therebetween. The gear system includes a first gear (25) having a pitch circle radius (F) greater than the throw (E) of the crankpin rigidly mounted coaxially on a piston extension (112a) surrounding the crankpin (113), and a second gear (26) with which the first gear meshes. One of said first and second gears is an external gear while the other is an internal gear. The gear system also includes a drive train (27) to achieve the required speed ratio and direction of rotation of the piston and crankshaft.