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:
Sep. 06, 2011
Filed:
Jan. 29, 2009
James a Mcewan, Huddersfield, GB;
Lee J Robinson, Huddersfield, GB;
James A McEwan, Huddersfield, GB;
Lee J Robinson, Huddersfield, GB;
Cummins Turbo Technologies Limited, Huddersfield, GB;
Abstract
A turbocharger system comprises a first relatively small high-pressure (HP) turbocharger () and a second relatively large low pressure (LP) turbocharger (). The turbine () of the LP turbocharger () is connected in series downstream of the turbine () of the HP turbocharger () in a first exhaust gas passage (). An exhaust bypass flow passage () provides a bypass flow path around the HP turbine (). A rotary valve () is located at a junction of the bypass flow passage () and a first exhaust gas flow passage (). The rotary valve () comprises a valve rotor () which is rotatable to selectively permit or block flow to the LP turbine () from either the first exhaust gas passage () or the bypass gas passage (). The rotary valve () is operated to at least partially restrict flow to the LP turbine to generate a braking back pressure.