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Dedicated EGR control strategy for improved EGR distribution and engine performance

机译:专用EGR控制策略可改善EGR分配和发动机性能

摘要

The present disclosure relates to methods, apparatuses and systems to manage exhaust gas expelled from cylinders of an internal combustion engine. An exemplary system may comprise at least one cylinder of the engine configured to operate as a dedicated exhaust gas recirculation (EGR) cylinder, and wherein substantially all exhaust gas expelled from the dedicated EGR cylinder is recirculated to an intake system of the engine. In one embodiment, the system may include a flow restrictor configured and arranged to restrict a flow of the recirculated exhaust gas to the dedicated EGR cylinder without restricting a flow of the recirculated exhaust gas to the remaining cylinders of the engine. In another embodiment, exhaust gas may be expelled from the dedicated EGR cylinder in pulsations, and the intake system may be configured to reduce an amplitude of the pulsations of the exhaust gas expelled from the dedicated EGR cylinder.
机译:本公开涉及用于管理从内燃机的气缸排出的排气的方法,设备和系统。一种示例性系统可以包括发动机的至少一个气缸,该至少一个气缸构造成用作专用排气再循环(EGR)气缸,并且其中从专用EGR气缸排出的基本上所有排气基本上都再循环到发动机的进气系统。在一个实施例中,该系统可以包括限流器,该限流器被配置和布置成限制再循环排气向专用EGR气缸的流动,而不限制再循环排气向发动机的其余气缸的流动。在另一个实施例中,排气可以脉动从专用EGR气缸排出,并且进气系统可以构造成减小从专用EGR气缸排出的排气的脉动幅度。

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