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:
Jan. 15, 2013
Filed:
Feb. 01, 2010
Matthew J Purdey, Huddersfield, GB;
Mohammed Hanif Khan, Birmingham, GB;
Matthew J Purdey, Huddersfield, GB;
Mohammed Hanif Khan, Birmingham, GB;
Cummins Turbo Technologies Limited, Huddersfield, GB;
Abstract
A turbocharger bearing housing defines a bore in which the turbocharger shaft is mounted for rotation in journal bearings. Lubricating oil is delivered to the journal bearings and a residue is retained in reservoirs in which the journal bearings are located. Two fluid retaining members are disposed around the shaft, each forming a wall of the reservoir and being sealed to the bearing housing. The lubricating fluid reservoir is provided between the fluid retaining members to a depth that at least partially immerses the journal bearings even when the oil supply is interrupted. This ensures that there is sufficient oil to lubricate the bearings at engine start-up, thereby reducing the risk of wear.