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:
Oct. 09, 2018
Filed:
May. 30, 2013
General Electric Company, Schenectady, NY (US);
Thomas Michael Lavertu, Clifton Park, NY (US);
Adam Edgar Klingbeil, Ballston Lake, NY (US);
Roy James Primus, Niskayuna, NY (US);
Omowoleola Chukwuemeka Akinyemi, Clifton Park, NY (US);
Venu Gopal Gummadavelli, Fairview, PA (US);
Barry Allen Record, Grove City, PA (US);
James Henry Yager, Northville, MI (US);
GENERAL ELECTRIC COMPANY, Schenectady, NY (US);
Abstract
A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.