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:
Aug. 05, 2014
Filed:
Oct. 14, 2009
Pierre Bernard French, Holmfirth, GB;
Pierre Bernard French, Holmfirth, GB;
Cummins Turbo Technologies Limited, Huddersfield, GB;
Abstract
An internal combustion engine has a turbocharger system and an exhaust gas recirculation (EGR) path. The turbocharger system comprises an inlet, an outlet and at least one turbocharger. The exhaust gas recirculation path recirculates a flow of exhaust gas to the air intake path. An EGR turbocharger has a turbine with an inlet in fluid communication with a first location in the exhaust gas path and an outlet in fluid communication with a second location in the exhaust gas path. The first and second locations being disposed such that, in use, the pressure difference of the gas between the inlet and outlet of the EGR turbine is less than the pressure difference of the gas between the inlet and outlet of the turbocharger system. The expansion ratio across the EGR turbine is therefore less than that across the turbocharger system and the EGR turbocharger is able to operate with greater efficiency.