公开(公告)号：US10094324B2

公开(公告)日：2018-10-09

申请号：US13905691

申请日：2013-05-30

Applicant: General Electric Company

Inventor： Thomas Michael Lavertu ,  Adam Edgar Klingbeil ,  Roy James Primus ,  Omowoleola Chukwuemeka Akinyemi ,  Venu Gopal Gummadavelli ,  Barry Allen Record ,  James Henry Yager

IPC: F02B3/00 ,  F02D43/04 ,  F02D41/00 ,  F02B37/00 ,  F02B37/013 ,  F02B37/16 ,  F02B37/18 ,  F02B37/22 ,  F02M26/08 ,  F02M26/10 ,  F02D41/14 ,  F02D41/40 ,  F02D31/00 ,  F02B29/04 ,  F02M26/23

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.

公开(公告)号：US20140358404A1

公开(公告)日：2014-12-04

申请号：US13905691

申请日：2013-05-30

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Thomas Michael Lavertu ,  Adam Edgar Klingbeil ,  Roy James Primus ,  Omowoleola Chukwuemeka Akinyemi ,  Venu Gopal Gummadavelli ,  Barry Allen Record ,  James Henry Yager

IPC: F02D43/04

CPC classification number: F02D43/04 ,  F01N2560/026 ,  F02B29/0412 ,  F02B37/004 ,  F02B37/013 ,  F02B37/16 ,  F02B37/18 ,  F02B37/22 ,  F02D31/001 ,  F02D41/0007 ,  F02D41/005 ,  F02D41/144 ,  F02D41/1454 ,  F02D41/1461 ,  F02D41/40 ,  F02D41/401 ,  F02D2041/001 ,  F02D2250/18 ,  F02D2250/36 ,  F02D2250/38 ,  F02M26/08 ,  F02M26/10 ,  F02M26/23 ,  Y02T10/142 ,  Y02T10/144 ,  Y02T10/44 ,  Y02T10/47

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.

Abstract translation: 提供了一种操作内燃机的方法。 该方法包括在多个气缸内燃烧新鲜空气和燃料的混合物。 该方法还包括将排气的第一部分引导到用于膨胀废气的涡轮增压器的第一级涡轮机和第二级涡轮机，引导来自排气歧管的排气的第二部分经由旁路第一 并且在与新鲜空气混合之后将第三部分排气再循环到进气歧管中。 该方法包括以下步骤中的至少一个：控制每个发动机功率设定时的正常发动机转速，同时通过增加每个循环的燃料喷射来保持发动机功率水平恒定; 在再循环期间同时增加废气第三部分的流量; 并推进燃料喷射正时，以减少符合第4级要求的排放水平。