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.

Date of Patent:
Apr. 04, 2023

Filed:

May. 25, 2020
Applicant:

Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;

Inventors:

Andreas Bruhn, Puchheim, DE;

Bjoern Hussmann, Munich, DE;

Marco Landwehr, Munich, DE;

Dirk Linse, Munich, DE;

Stefan Schott, Munich, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 19/12 (2006.01); F02M 25/022 (2006.01); F02M 25/03 (2006.01);
U.S. Cl.
CPC ...
F02D 19/12 (2013.01); F02M 25/0224 (2013.01); F02M 25/0227 (2013.01); F02M 25/03 (2013.01); F02D 2200/04 (2013.01); F02D 2200/602 (2013.01);
Abstract

A method for determining an air mass in an air separator of a water direct injection system for injecting a water/fuel mixture into a combustion chamber of an engine of a motor vehicle. The air separator is disposed between a water pump for delivering water of the water/fuel mixture and a high-pressure pump for feeding the water/fuel mixture to a high-pressure injector for injecting the water/fuel mixture into the combustion chamber. The method includes increasing a pressure of the water from a first pressure value to a second pressure value by the water pump, determining a water volume delivered by the water pump during the increasing of the pressure of the water by the water pump, and determining the air mass in the air separator on a basis of the determined water volume delivered by the water pump.


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