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:
Oct. 29, 2019
Filed:
Jan. 26, 2016
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Piergiacomo Traversa, Nuremberg, DE;
Gerulf Pedersen, Furth, DE;
SCHAEFFLER TECHNOLOGIES AG & CO. KG, Herzogenaurach, DE;
Abstract
A method for simulating malfunctioning solenoid valves is disclosed. A current flows through a solenoid valve in order to achieve opening and closing. The closing is forced after the current supplied to the solenoid valve is activated at an activation time, and the opening is forced after the current is deactivated. The current is applied with a charging current strength before activation for a charging phase, and after activation, the current is increased to peak current strength and subsequently reduced to a holding current strength. The current strength is reduced to a deactivation current strength, after which the current strength increases again. A variation of the value or duration of the current strength or an application of an additional magnetic force is used to simulate a premature activation, a delayed activation, a premature deactivation, or a delayed deactivation.