Invention Grant
US09534517B2 Systems and methods for a modified cylinder firing interval in a dedicated EGR engine
有权
在专用EGR发动机中改进的气缸点火间隔的系统和方法
- Patent Title: Systems and methods for a modified cylinder firing interval in a dedicated EGR engine
- Patent Title (中): 在专用EGR发动机中改进的气缸点火间隔的系统和方法
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Application No.: US14458201Application Date: 2014-08-12
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Publication No.: US09534517B2Publication Date: 2017-01-03
- Inventor: Daniel Joseph Styles , Brad Alan Boyer , Gregory Patrick McConville
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Alleman Hall McCoy Russell & Tuttle LLP
- Agent Julia Voutyras
- Main IPC: F01L13/00
- IPC: F01L13/00 ; F02M25/07 ; F02D13/02 ; F02D23/00 ; F02D41/00

Abstract:
Methods and systems are provided for operating exhaust valves of an engine to create more even exhaust pulses to a turbine. More specifically, the engine may include one or more dedicated exhaust gas recirculation (EGR) cylinders routing exhaust to an engine intake and one or more non-dedicated EGR cylinder routing exhaust to the turbine. In one example, a method may include operating a first set of exhaust valves of a group of non-dedicated EGR cylinders to have no exhaust valve opening overlap and operating an exhaust valve of a dedicated EGR cylinder so that opening of the second exhaust valve overlaps with opening of exhaust valves of two cylinders of the group of non-dedicated EGR cylinders.
Public/Granted literature
- US20160047341A1 SYSTEMS AND METHODS FOR A MODIFIED CYLINDER FIRING INTERVAL IN A DEDICATED EGR ENGINE Public/Granted day:2016-02-18
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