Patent · US Active

Method and device for transmission noise suppression

US8727093B2 · kind B2 · utility

2Cited by

4References

7Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Johann Maerkl · Ingolstadt, DE
Alexander Schmidt · Ingolstadt, DE

Key dates

Filing date	Jul 13, 2009
Grant date	May 20, 2014
Priority date	—
Expiry date	Jun 22, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H57/0006
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention relates to a method and a device for suppressing transmission noise from automatic transmissions, in particular for motor vehicles, the transmission having at least two alternating multi-disk clutches that control a power flow via a gearing mechanism through which oil flows to cool the clutches and to reduce wear and tear on them. To create a method and a device that are of simple design and that can operate without wear and tear, it is proposed that under defined operating conditions of the transmission, the throughput amount of oil is increased in such a way that a defined drag torque occurs at the multi-disk clutch that is opened.

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