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:
Feb. 22, 2022
Filed:
Nov. 08, 2019
Hedman Ericsson Patent Ab, Flen, SE;
Mats Hedman, Sparreholm, SE;
Hedman Ericsson Patent AB, Flen, SE;
Abstract
The present invention concerns a method for electrically controlling a valve actuator in a 2-stroke or 4-stroke engine, where the actuator comprises a first solenoid (A) with a plunger () and a second solenoid (B) with a plunger (), wherein the engine has at least one cylinder () with at least one freely controllable engine valve comprising a valve disc () with associated valve stem () and a valve spring () and where air is introduced, or exhaust gases are evacuated from, a combustion chamber () past a lower part of the valve stem with the valve disc via at least one channel () in the cylinder, wherein the valve actuator is activatable to open the engine valve. The invention is characterized in that both the first and second solenoid are activated during opening of the engine valve.