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:
Apr. 21, 2020
Filed:
Jan. 26, 2018
Borgwarner Inc., Auburn Hills, MI (US);
Andrew Paul Day, Huddersfield, GB;
Mark Burgess, Lincolnshire, GB;
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
A two-stage valve assembly for a turbocharger includes a movable primary valve adapted to open and close a valve seat of the turbocharger. The primary valve has at least one opening extending axially therethrough. The two-stage valve assembly also includes a movable secondary valve coupled to the primary valve to open and close the at least one opening of the primary valve. The two-stage valve assembly further includes a spring disposed between the primary valve and the secondary valve to seat the secondary valve against the primary valve. The secondary valve is adapted to be coupled to a valve arm of the turbocharger such that relative small movement of the valve arm causes the secondary valve to move and open the opening to allow some exhaust gas of the turbocharger to escape through the at least one opening without moving the primary valve relative to the valve seat.