Considerations on the low-pressure exhaust gas recirculation system control in turbocharged diesel engines. (February 2014)

• Record Type: Journal Article
• Authors: Luján, José M; Guardiola, Carlos; Pla, Benjamím; Cabrera, Pedro
• Is Part Of: International journal of engine research. Volume 15:Number 2(2014)
• Page Start: 250
• Page End: 260
• Publication Date: 2014-02
• Subjects: Diesel engine -- engine control -- exhaust gas recirculation -- turbocharging -- model predictive control; Engines -- Periodicals; 629.25
• DOI: 10.1177/1468087413485209
• Languages: English
• ISSNs: 1468-0874

Abstract

Although high-pressure exhaust gas recirculation has been commonly used in turbocharged diesel engines for controlling the NOx formation, recent advances in after-treatment and material technology make possible using a low-pressure architecture, which recirculates the exhaust gas upstream the compressor. This brief article presents a basic study of control aspect related to the low-pressure architecture, emphasising the similarities and differences with the high-pressure system. Data from experimental tests with both configurations and from a one-dimensional wave action model simulations are combined for the analysis of the input–output paring, linearity and the transient performance of both systems.