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:
Apr. 30, 1985
Filed:
May. 31, 1984
Applicant:
Inventors:
Hermann Gassler, Vaihingen/ENZ, DE;
Wolfgang Kosak, Molingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123339 ; 123352 ;
Abstract
An apparatus is proposed for regulating the idling rpm in an internal combustion engine. The apparatus has a PI regulator which has an insensitivity control circuit associated with it. Minimum and maximum value limiting circuits are furthermore provided, their thresholds being dependent on operating characteristics. Finally, a D element circuit cooperates with the PI regulator. The D element is subject to a threshold, and it comes into effect only when the rpm is dropping, its function being such as to steepen the I component of the PI regulator.