Browse Publications Technical Papers 2003-01-0362

Coordinated Control of EGR Valve and Intake Throttle for Better Fuel Economy in Diesel Engines 2003-01-0362

Modern diesel engines are frequently equipped with an exhaust gas recirculation (EGR) valve and intake throttle (ITH). The intake throttle serves to depress intake manifold pressure, create a greater pressure differential across the EGR valve, and enhance the ability to flow EGR at low speed and load conditions. A conventional approach to controlling the intake throttle is to schedule its desired position as a function of engine speed and load. In this paper we present a coordinated approach to the control of EGR valve and intake throttle.


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