The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1995
Filed:
Nov. 02, 1993
Friedrich Graf, Regensburg, DE;
August Kammerl, Brunn, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a transmission control for a motor vehicle, the load acting on the motor vehicle, the engine rpm and the engine torque are taken into consideration when determining a point for shifting gears. A circuit determines if the engine torque lies above a first threshold value characterizing a traction operation of a motor vehicle, as a first condition; if an amount of acceleration lies below a second threshold value characterizing unaccelerated drive, as a second condition; and if the engine torque lies above a torque characterizing a movement resistance on a level surface plus a third threshold value, as a third condition. A signal is generated when the first, second and third conditions have been met for displacing the point for shifting gears in a direction of increased output rpm.