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. 22, 2008
Filed:
Nov. 16, 2004
Axel Heinstein, Wimsheim, DE;
Axel Heinstein, Wimsheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for operating an internal combustion engine, particularly of a motor vehicle, is described. The engine has a number of cylinders (Z, Z, Z, Z), and in each of the cylinders (Z, Z, Z, Z), one movable piston is accommodated, which is capable of passing through an intake phase (S), a compression phase (V), a working phase (A), and an expulsion phase (B). The fuel can be injected directly into a combustion chamber defined by the cylinder (Z, Z, Z, Z) and the piston. A first output signal (P) is generated, which always changes its value whenever a transition from one phase to the next phase of the engine is taking place. A second output signal (P) is generated, which always changes its value upon every other transition between two phases of the engine. The two output signals (P, P) are generated independently from one another, and from the two output signals, the present phase of at least one of the cylinders (Z, Z, Z, Z) is ascertained.