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. 26, 2002
Filed:
Feb. 26, 2001
Thomas Schuster, Allmersbach, DE;
Ingolf Rupp, Ludwigsburg, DE;
Andreas Roth, Muehlacker-Lomersheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to an apparatus and a method for controlling and regulating an internal combustion engine ; via a transducer disk on the crankshaft and a pickup , the annular position of the crankshaft is ascertained continuously, with gasoline direct injection valves, in which the fuel injection valves receive the fuel from a pressure-imposing electric fuel pump via a fuel rail . A control unit evaluates the output signals of the pickup to determine the annular position and to ascertain the rpm; depending on the annular position, the control unit trips injection and/or ignition pulses. According to the invention, to detect the phase relationship of the engine , the pressure course in the fuel rail sensor is evaluated. Upon blowback at compression counterpressure of fuel-air mixture into one of the injection valves in the event of an incorrect phase relationship offset by 360° KW, this leads to a significant pressure increase in the fuel rail sensor ; the fuel rail sensor signal is delivered to the control unit , and as a result by means of the control unit a reverse synchronization by 360° KW of the ignition and injection is effected, and the affected fuel injection valve into which the blowback takes place is immediately closed.