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:
Jun. 03, 1986
Filed:
Feb. 27, 1984
Alfred Schulz, Oberriexingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A controller (13) provides control signals to an engine (E) to control its idling speed. To provide for additional fuel under special operating conditions--e.g. low engine temperature, starting conditions, placement of a sudden load such as connection of an air-conditioner or the like--a modification signal is generated in signal generators (17, 18, 19 . . . 19n) which signals are introduced into the path of the signals from the idle or command function generator (11) to a positioning element (15) which controls fuel supply to the engine. The engine itself can provide at least some of the signals to the function generators, for example by engine temperature transducers (ETt); engine speed transducers (ETn), to provide engine temperature signals. Starting can be sensed by sensing both engine speed and temperature, and/or operation of the starting switch. An additional function generator (19) is preferably provided to prevent overshoot of the positioning element (15) if the accelerator pedal is suddenly released, thus preventing stalling of the engine.