Patent · US Expired

Method and device for setting a gear ratio in a motor vehicle having a distance and/or vehicle-speed controller

US6662098B2 · kind B2 · utility

9Cited by

3References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Manfred Hellmann · Hardthof, DE
Hermann Winner · Bietigheim, DE
Albrecht Irion · Stuttgart, DE

Key dates

Filing date	Apr 17, 2001
Grant date	Dec 9, 2003
Priority date	—
Expiry date	Apr 17, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/16
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method and a device for setting a gear ratio of the transmission while a distance and/or vehicle-speed control system (ACC system) is activated. A setpoint variable, as a function of which at least the driving motor of the vehicle is controlled, is input. The setpoint variable or a value derived from this setpoint variable is limited in response to the existence of a first operating state, and the gear ratio is then set as a function of the limited variable, or as a function of the limited value. The gear ratio is set as a function of the setpoint variable, or as a function of the value, in response to the existence of a second operating state. The method and device prevent unnecessary and uncomfortable occurrences of downshifting during ACC operation, without losing the option of accelerating sharply.

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