Patent ID: 8366412

Claim:
A compressor drive system for driving a compressor of an internal combustion engine, said drive system comprising: a variable speed drive unit connected with an internal combustion engine; a planetary gear set including a sun gear, a planet carrier, and a ring gear, the planetary gear set connected to the internal combustion engine and to a compressor, the planetary gear set including a first input shaft connected with the internal combustion engine, a second input shaft connected with the variable speed drive unit, and an output shaft connected to the compressor, wherein the variable speed drive unit is designed as a hydrostatic transmission that includes a hydraulic pump and a hydraulic motor; and a multiway valve is included in the variable speed drive unit, wherein in a first selector position of the multiway valve the hydraulic pump is connected to the hydraulic motor, and in a second selector position the hydraulic pump is short-circuited to a hydraulic tank.