TY - GEN
T1 - Model-based Control Development of a Tier 4 Locomotive Engine with Exhaust Gas Re-circulation
AU - Bhat, Sanketh
AU - Sivasubramaniam, Manthram
AU - Mischler, Robert
AU - Gupta, Manish
AU - Dey, Satadru
N1 - Funding Information:
*Resrach supported by General Electric (GE) Company. Sanketh Bhat & Manthram Sivasubramaniam are with the GE Global Research Center, Bangalore, India (e-mail: [email protected]; [email protected] ). Robert Mischler is with Wabtec Corporation, Erie, PA, USA (email : [email protected])
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - The Tier 4 emission standards for heavy duty diesel engines have a reduction of > 70\% in nitrous oxide (NOx) particulate matter (PM) as compared to the Tier 3. Technology changes need to be introduced to meet these stringent norms. The paper discusses the model-based control development for a Tier 4 locomotive engine using Exhaust gas recirculation (EGR) wherein part of the exhaust gas is re-circulated into the cylinder to reduce NOx formation. Since emissions are predominantly functions of how good combustion takes place inside the cylinder and how the engine breathes i.e.The conditions of the air and fuel entering and exiting the cylinder, control of oxygen-based indicators like the oxygen fraction in the intake manifold will be critical to identify the emission. The oxygen-based metrics can in turn be mapped to the flows pressures in the air handling path. To accurately control these parameters advanced control techniques, need to be developed. The aforementioned controls problem is a complex and intellectually challenging one for the following reasons: (i) multi-input multi-output system dynamics with coupled control loops, (ii) non-minimum phase behavior, and (iii) limited sensor measurements etc. This paper describes the details of the controls development process. Specifically, we discuss (i) single input single output control scheme keeping in mind simplicity for real-Time implementation, (ii) decoupling technique to minimize the coupling between the interacting loops, (iii) virtual actuator coupling to aid in control design, and (iv) scheduling the control gains for optimal performance throughout the operating range.
AB - The Tier 4 emission standards for heavy duty diesel engines have a reduction of > 70\% in nitrous oxide (NOx) particulate matter (PM) as compared to the Tier 3. Technology changes need to be introduced to meet these stringent norms. The paper discusses the model-based control development for a Tier 4 locomotive engine using Exhaust gas recirculation (EGR) wherein part of the exhaust gas is re-circulated into the cylinder to reduce NOx formation. Since emissions are predominantly functions of how good combustion takes place inside the cylinder and how the engine breathes i.e.The conditions of the air and fuel entering and exiting the cylinder, control of oxygen-based indicators like the oxygen fraction in the intake manifold will be critical to identify the emission. The oxygen-based metrics can in turn be mapped to the flows pressures in the air handling path. To accurately control these parameters advanced control techniques, need to be developed. The aforementioned controls problem is a complex and intellectually challenging one for the following reasons: (i) multi-input multi-output system dynamics with coupled control loops, (ii) non-minimum phase behavior, and (iii) limited sensor measurements etc. This paper describes the details of the controls development process. Specifically, we discuss (i) single input single output control scheme keeping in mind simplicity for real-Time implementation, (ii) decoupling technique to minimize the coupling between the interacting loops, (iii) virtual actuator coupling to aid in control design, and (iv) scheduling the control gains for optimal performance throughout the operating range.
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U2 - 10.1109/ICC54714.2021.9703127
DO - 10.1109/ICC54714.2021.9703127
M3 - Conference contribution
AN - SCOPUS:85126768378
T3 - 2021 7th Indian Control Conference, ICC 2021 - Proceedings
SP - 57
EP - 62
BT - 2021 7th Indian Control Conference, ICC 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th Indian Control Conference, ICC 2021
Y2 - 20 December 2021 through 22 December 2021
ER -