Patent · US Expired

Method for automatic control of an RPM-changing engaging device of a motor vehicle

US5433677A · kind A · utility

6Cited by

4References

15Claims

0Family size

Assignee

Dr. Ing. h.c. F. Porsche AG · DE

Inventors

Joseph Petersmann · Wimsheim, DE
Willi Seidel · Lambach, DE
Heinz Stehle · Marloffstein, DE
Werner Mollers · Wiernsheim, DE
Udo Hickmann · Mühlacker, DE

Key dates

Filing date	Dec 21, 1993
Grant date	Jul 18, 1995
Priority date	—
Expiry date	Dec 21, 2013

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2312/02
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An rpm-changing engaging device of a motor vehicle is controlled during an engaging process in such fashion that a curve is selected according to which the rpm difference based on the input rpm of the engaging device is adjusted between the input rpm of the engaging device and its output rpm by the engaging device indirectly or directly, corresponding to the value, determined prior to the engaging process or before the stopping of the motor vehicle, of a driving activity. A precondition is that the rpm difference, based on the input rpm of the engaging device and its output rpm. The curve is selected from a family of several engaging devices.

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