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:
Mar. 12, 2019
Filed:
Mar. 09, 2017
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Sebastian Grasreiner, Munich, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A method for detecting defective injection nozzles that deliver fuel into the combustion chambers of an internal combustion engine includes determining the standard deviation values for the respective injection nozzles and of the total leakage flow via a computation. The computation involves solving an equation for a respective test step that describes the standard deviation values and the total leakage flow as a function of the mixture factors set in a respective test step, a lambda value that is valid for a respective test step and that is derived from the measurements of the lambda value, and an air mass flow that is valid for the respective test step and that is derived from the measurements of the air mass flow.
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