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:
Dec. 19, 1995
Filed:
Oct. 21, 1994
Applicant:
Inventors:
Assignee:
VDO Adolf Schindling AG, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; B60K / ;
U.S. Cl.
CPC ...
123399 ; 731181 ; 1231 / ;
Abstract
A test routine for a throttle-valve displacement device is accomplished by use of a potentiometer (6) associated with a setting drive (3) and a potentiometer (5) associated with the throttle valve (1) to determine if the valve is operating properly. If it is found from a comparison of the potentiometer signals that the throttle valve (1) is connected to the gas pedal (2), then the setting drive is moved at specific time intervals at least once in closing direction and then back into the starting, position, and it is tested whether the throttle valve (1) follows the setting device. If so, then there is an erroneous indication of one of the two potentiometers and safety measures can be taken.