Abstract:
Apparatus and method for controlling an unswept volume in a piston system. The method includes rotating a shaft around a rotation point to drive a piston within a cylindrical volume in a periodic manner, modifying the stroke length of the piston, and moving the center of the shaft relative to the cylindrical volume such that a change in an unswept volume or compression ratio is controlled.
Abstract:
A connecting rod assembly is provided for varying a compression ratio of an internal combustion engine having a crankshaft and a piston. The connecting rod assembly includes a first portion adapted to be connected to the crankshaft, and a second portion adapted to be connected to the piston and movable with respect to the first portion. The connecting rod assembly further includes a locking mechanism disposed between the first and second portions. The locking mechanism includes a rotatable locking element that is configured to lock the second portion at a first position relative to the first portion. Furthermore, the first position corresponds to a first compression ratio of the engine.
Abstract:
A rotational power input is converted into a linearly oscillating power output through the use of counter-rotating nested eccentrics. The outer eccentric is connected to an input end of a connecting rod, which is in turn connected at an output end thereof to a piston of a piston pump. The piston is constrained to translational movement along an axis D. Drive gears are rotationally fixed to each of the eccentrics and geared to each other through an intermediate pinion having a rotational axis B. An angular position null of the pinion axis B relative to the axis D determines the output oscillation stroke length and flow rate of the pump. An actuator is geared to a pinion bracket that holds the pinion. The actuator can be actuated on-the-fly to alter the angle null and pumping rate of the pump.
Abstract:
A three-position stop type swing actuator has a main piston freely moving in forward and backward directions in an axial direction within a casing, an output shaft placed at a coaxial position with the main piston in such a manner as to be fixed in an axial direction and freely rotate around an axis, a conversion and transmission mechanism converting a forward and backward motion of the main piston into a rotating and swinging motion of the output shaft, and a sub piston having a stroke smaller than that of the main piston a fluid pressure operating force larger than that of the main piston and arranged within the casing in such a manner as to freely move in the forward and backward directions and be capable of being brought into contact with the main piston so as to restrict a middle stop position of the main piston.
Abstract:
A positioning apparatus includes a housing having a chamber. The vane is rotatably movable within the chamber. An arm is coupled to the vane.
Abstract:
Reciprocating compressor including a connecting rod for converting a rotating movement of a crank shaft into a linear reciprocating movement, a piston for making a linear reciprocating movement inside of a cylinder block by the connecting rod, and resonating means for resonating the piston, wherein the resonating means is a supplementary piston fitted to the piston additionally and a resonator fitted between the supplementary piston and the piston, or a resonator in a space between a sleeve side part and a piston side part of a divided connecting rod, thereby preventing an over pressure loss of the refrigerant and enhancing a performance by increasing refrigerant flow rate.