Patent ID: 8261860
Filing Date: 2012-09-11
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. Hybrid powertrain system, comprising: an electrical energy storage device; an electrically-powered torque machine configured to generate torque transferable to a driveline and react torque from the driveline; a plurality of reciprocating free-piston internal combustion engines each including a linear alternator device configured to generate electric power when in an engine-on state, each reciprocating free-piston internal combustion engine configured to generate a rated output power differing from rated output powers of the other reciprocating free-piston internal combustion engines when operating at resonant speeds; a power electronics circuit configured to transfer electric power between each of the linear alternator devices, the electrical energy storage device and the torque machine; and a control module configured to