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:
Jul. 06, 2021
Filed:
Jun. 18, 2019
Applicant:
Cpt Group Gmbh, Hannover, DE;
Inventor:
Michael Wirkowski, Regensburg, DE;
Assignee:
Vitesco Technologies GmbH, Hannover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 19/06 (2006.01); F02D 41/38 (2006.01); F02D 19/08 (2006.01);
U.S. Cl.
CPC ...
F02D 19/087 (2013.01); F02D 19/0615 (2013.01); F02D 19/0634 (2013.01); F02D 19/0649 (2013.01); F02D 19/0652 (2013.01); F02D 19/085 (2013.01); F02D 19/0636 (2013.01); F02D 41/3827 (2013.01); F02D 41/3836 (2013.01); F02D 2200/0602 (2013.01); F02D 2200/0611 (2013.01); F02D 2200/0612 (2013.01); F02D 2200/0618 (2013.01); Y02T 10/30 (2013.01);
Abstract
A method for operating an internal combustion engine with detection of the fuel used for injection is described. In the method, the elasticity modulus of the fuel to be injected is determined at a first and a second injection pressure. A difference value is calculated from the difference between the two elasticity modulus values related to the pressure difference and is compared with a differentiating value. The fuel being used is detected depending on whether the difference value is above or below the differentiation value. In particular, the method is used for differentiating diesel fuel EN590 and biodiesel.