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. 07, 2020
Filed:
May. 04, 2016
Poclain Hydraulics Industrie, Verberie, FR;
Andre Prigent, Verberie, FR;
Cyrille D'Hersignerie, Verberie, FR;
POCLAIN HYDRAULICS INDUSTRIE, Verberie, FR;
Abstract
The present invention relates to a hydraulic-assistance system for motor vehicles, comprising a primary motor (M) and two hydraulic machines () connected by a hydraulic circuit such that when a first hydraulic machine () operates as a pump, the second hydraulic machine () operates as a motor. The invention is characterized in that the hydraulic circuit connecting the two machines () is an open circuit passing through a tank (), the hydraulic machine () operating as a motor is a declutchable machine, and the hydraulic machine () operating as a pump is a pump in which the variable displacement is controlled by a device comprising a proportional pressure limiter () placed between a drain line () and the discharge line of the hydraulic machine () operating as a pump, and enabling the assistance pressure to be set, and at least one collection nozzle () placed between the proportional pressure limiter () and the discharge line of the hydraulic machine (), the setpoint pressure controlling the hydraulic machine () operating as a pump being collected between the pressure limiter () and the collection nozzle ().