Noise reduction in motor vehicles with a hybrid drive

摘要

A method for noise reduction in a motor vehicle that has a hybrid drive and includes an internal combustion engine and at least two electric machines including a first electric machine on a front axle of the motor vehicle and a second electric machine on a rear axle of the motor vehicle. The method includes automatically cutting in the at least two electric machines as a function of a required drive torque and an expected noise emission associated with the required drive torque, in a case of sole operation of the internal combustion engine, so as to reduce the load of the internal combustion engine. Torque distribution is carried out variably between the front axle and rear axle of the motor vehicle.

主权项

1. A method for noise reduction in a motor vehicle with a hybrid drive, the motor vehicle including an internal combustion engine and at least two electric machines including a first electric machine on a front axle of the motor vehicle and a second electric machine on a rear axle of the motor vehicle, the method comprising:
determining a permissible drive torque associated with a maximum permissible noise emission for a case of sole operation of the internal combustion engine; automatically cutting in the at least two electric machines as a function of a required drive torque and an expected noise emission associated with the required drive torque, in the case of sole operation of the internal combustion engine, so as to reduce the load of the internal combustion engine and automatically establish a load reduction of the internal combustion engine that is based on the permissible drive torque associated with the maximum permissible noise emission, and carrying out torque distribution variably between the front axle and rear axle of the motor vehicle.