Patent ID: 7181912
Filing Date: 2007-02-27
Classification: B60K,F02B,F02G,Y02E,Y02T

Abstract:
1. A power unit comprising: a combustion engine as a prime mover for driving devices; auxiliary machinery for the combustion engine; an electric motor; a generator; and a Stirling engine operated by a working gas to drive the generator; wherein the Stirling engine has a heater that uses waste heat produced by the combustion engine for heating the working gas, a battery is connected to the electric motor to supply power to the electric motor, the generator is connected to the electric motor and the battery to supply generated power to the electric motor and the battery, and the electric motor is connected to the auxiliary machinery to drive the auxiliary machinery, and wherein the auxiliary machinery is an auxiliary machine group including a plurality of auxiliary machines, the auxiliary machines of the auxiliary machine group are connected through a transmission mechanism including clutches to the combustion engine, the clutches are engaged and disengaged to drive the plurality of auxiliary machines selectively by the combustion engine or the electric motor, and a control system determines selectively, the number of the auxiliary machines to be driven by the electric motor.