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:
Nov. 10, 1992
Filed:
Dec. 13, 1991
Adolf Fritz, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention is directed to a method for adjusting the idle air actuator in the intake system of an internal combustion engine during idle or overrun operation, the method comprising the steps of: transferring the idle air actuator into a non-driven position in a load area outside the idle or overrun operation; continuously monitoring outside of idle and overrun operation as to whether such a change of operating variables takes place which makes a transfer into idle or overrun operation probable; and, if so, driving the idle air actuator with a value which is determined so that the idle air actuator assumes that position, which, when reaching idle or overrun operation, will presumably by substantially the correct position. The method of the invention affords the advantage that the power loss for driving the idle air actuator is considerably reduced without disturbances (caused by intermittent non-driving of the actuator) occurring in the performance of the engine during transitions from the driven into the non-driven state and vice versa.