Method for the operation of a drivetrain

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8002669
APP PUB NO 20070287586A1
SERIAL NO

11811440

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method for operating a motor vehicle drivetrain comprising at least an automatic transmission and a drive assembly. The automatic transmission includes at least five shifting elements to transmit torque and/or power. In each forward and reverse gear, three shifting elements are engaged and the remaining two shifting elements are disengaged. Two consecutive gearshifts are carried out through selection of the five shifting elements. During a first gearshift, implemented as a multiple gearshift, a subsequent second gearshift, implemented as either a single or multiple gearshift, is prepared. During the first gearshift, a first shifting element is disengaged, a second shifting element is engaged, a third shifting element is prepared for disengagement in a subsequent second gearshift and a fourth shifting element is prepared for engagement. Further, during the first gearshift and the subsequent second gearshift, a fifth shifting element is retained in at least a substantially engaged state.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
ZF FRIEDRICHSHAFEN AGGERMANY

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Popp, Christian Kressbronn, DE 79 565
Steinhauser, Klaus Kressbronn, DE 71 528

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation