Patent · US Active

Noise reduction in motor vehicles with a hybrid drive

US8781667B2 · kind B2 · utility

2Cited by

2References

6Claims

0Family size

Assignee

Dr. Ing. h.c. F. Porsche AG · DE

Inventors

Stefan Wimmer · Rottenburg a. d. Laaber, DE
Wolfgang Held · Emmendingen, DE
Heiko Mayer · Adelmannsfelden, DE
Thomas Rauner · Blaubeuren, DE

Key dates

Filing date	Dec 19, 2012
Grant date	Jul 15, 2014
Priority date	—
Expiry date	Dec 19, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S903/903
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.