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:
Mar. 26, 1996
Filed:
Oct. 14, 1994
Erwin Schneider, Liederbach, DE;
Frank Go/ hring, Frankfurt, DE;
VDO Adolf Schindling AG, Frankfurt, DE;
Abstract
A method for recognizing idling in a load-shifting device of an internal combustion engine controlled by throttle valve, in which the position of a setting element on the throttle-valve side is monitored by a first potentiometer and the position of a setting element on the setting-drive side is monitored by a second potentiometer. In order to be able to dispense with a separate idle contact associated with the setting element on the accelerator-pedal side for detecting the driver's wish for 'idling', use is made of potentiometers having linear characteristic curves, and comparing the ratio of the characteristic curves with the actual characteristic curve ratio resulting in operation for differences. A second solution proposes adjusting the two potentiometers to the same slope by balancing at two points each, continuously detecting the voltage shifts of the two potentiometers and recognizing idling if, with a given voltage shift of the one potentiometer, a voltage shift which is predetermined on basis of the microlinearity properties of the potentiometers occurs on the other potentiometer.