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

Systems and methods for a modified cylinder firing interval in a dedicated EGR engine
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.
Information query
Patent Agency Ranking
0/0