Patent · US Expired

Motor vehicle having a transmission controlled by an electronic transmission unit

US6544144B2 · kind B2 · utility

1Cited by

4References

7Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Rudolf Ehrmaier · Munich, DE
Josef Neuner · Raubling, DE
Sigmund Fuerst · Maisach, DE

Key dates

Filing date	Mar 16, 2001
Grant date	Apr 8, 2003
Priority date	—
Expiry date	Mar 16, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S477/906
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A motor vehicle has a transmission controlled by an electronic transmission unit and an internal-combustion engine controlled by an electronic engine unit. The transmission unit normally shifts the selected gear by controlling actuators in the transmission, as a function of the adjustment of a gear selection switch. In an emergency, which can be detected by the engine unit via a communication connection with the transmission unit, and in which the adjustment of the gear selection switch is not detected by the transmission unit and/or the selected gear cannot be shifted in the transmission, the engine unit enforces a limitation of vehicle acceleration.

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