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. 20, 2021
Filed:
Apr. 23, 2019
Nidec Gpm Gmbh, Auengrund OT Merbelsrod, DE;
Franz Pawellek, Lautertal, DE;
NIDEC GPM GMBH, Auengrund OT Merbelsrod, DE;
Abstract
An adjustable lubrication oil conveying system for a combustion engine is proposed which comprises a screw pump for conveying lubrication oil with at least one screw rotatably accommodated in a screw chamber, wherein the screw pump is arranged such that a suction side of the screw chamber is connected with an intake path from an oil sump of the combustion engine, and a pressure side of the screw chamber is connected with a feed path to moving parts of the combustion engine. The lubrication oil conveying system is characterised in particular in that the screw pump is driven by the combustion engine; and towards the suction side of the screw chamber, an adjustable throttle valve is provided by means of which a flow cross-section of the intake path is gradually limitable between an opened position and a closed position. Therefore, the oil pressure in a combustion engine is, for the first time, adjusted by suction throttling in connection with a screw pump.