Patent · US Active

Method for reducing the reaction time of an automatic transmission of a motor vehicle

US9631720B2 · kind B2 · utility

2Cited by

0References

3Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Michael Sohler · Isny im Allgäu, DE
Thilo Schmidt · Meckenbeuren, DE
Thomas Raab · Grandvaux, CH

Key dates

Filing date	Nov 11, 2014
Grant date	Apr 25, 2017
Priority date	—
Expiry date	Jun 25, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2312/14
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method is provided for reducing the reaction time of an automatic transmission of a motor vehicle, the vehicle having a hydraulic control unit with a pressure regulator, from an engine stop of an automatic start-stop mechanism. The oil volume that is still present in the hydraulic control unit (HCU) of the transmission prior to the stopping of the internal combustion engine is used for the supply of oil for the actuation of the shifting elements of the transmission upon an engine start.

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