Patent ID: 7649273
Filing Date: 2010-01-19
Classification: B60K,B60Y,F01P,Y02T

Abstract:
1. A hybrid drive unit for a motor vehicle, comprising: an internal combustion engine and at least one electric machine which is optionally operable as a motor or as a generator, wherein both the internal combustion engine and the at least one electric machine are coupled to a drive train of the motor vehicle to provide a hybrid drive system in which both can drive the drive train simultaneously, a charge air compressor for compression of combustion air supplied to the internal combustion engine, a charge air cooler for cooling the combustion air, and a low-temperature cooling circuit carrying a liquid coolant and having a heat exchanger for cooling the coolant, wherein the low-temperature cooling circuit providing the liquid coolant to (a) the charge air cooler and to (b) at least one of the electric machine and electronic components allocated to the electric machine, wherein at least a portion of such elements cooled by the liquid coolant are provided with the liquid coolant in series and are arranged such that the element having the greatest sensitivity to temperature is first in series to receive the liquid coolant.