Direct Coupled 1D/3D-CFD-Computation (GT-Power/Star-CD) of the Flow in the Switch-Over Intake System of an 8-Cylinder SI Engine with External Exhaust Gas Recirculation

2002 ◽  
Author(s):  
Udo G. Riegler ◽  
Michael Bargende
Keyword(s):  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Si Engine ◽  
Intake System ◽  
Gas Recirculation

Adaptation for Air-Intake System Throttle Control in a Gasoline Engine With Low-Pressure Exhaust-Gas Recirculation

2015 ◽  
Author(s):  
Mario Santillo ◽  
Suzanne Wait ◽  
Julia Buckland
Keyword(s):  
Feedback Control ◽  
Control Strategy ◽  
Gasoline Engine ◽  
Exhaust Gas Recirculation ◽  
Lookup Table ◽  
Exhaust Gas ◽  
Feed Forward ◽  
Intake System ◽  
Air Intake ◽  
Gas Recirculation

We investigate control strategies for traditional throttle-in-bore as well as low-cost cartridge-style throttle bodies for the air-intake system (AIS) throttle used in low-pressure exhaust-gas recirculation (LPEGR) on a turbocharged gasoline engine. Pressure sensors placed upstream and downstream of the AIS throttle are available as signals from the vehicle’s engine control unit, however, we do not use high-bandwidth feedback control of the AIS throttle in order to maintain frequency separation from the higher-rate EGR loop, which uses the downstream pressure sensor for feedback control. A design-of-experiments conducted using a feed-forward lookup table-based AIS throttle control strategy exposes controller sensitivity to part-to-part variations. For accurate tracking in the presence of these variations, we explore the use of adaptive feedback control. In particular, we use an algebraic model representing the throttle plate effective opening area to develop a recursive least-squares (RLS)-based estimation routine. A low-pass filtered version of the estimated model parameters is subsequently used in the forward-path AIS throttle controller. Results are presented comparing the RLS-based feedback algorithm with the feed-forward lookup table-based control strategy. RLS is able to adapt for part-to-part and change-over-time variabilities and exhibits an improved steady-state tracking response compared to the feed-forward control strategy.

scholarly journals Hybrid Turbocharged SI engine with Cooled Exhaust Gas Recirculation for Improved Performance

2016 ◽  
Vol 24 ◽  
pp. 444-451 ◽  
Author(s):  
Jinsha Rajeevan ◽  
M.H. Hans ◽  
Antonio Joseph ◽  
T.S. Kiran ◽  
Gireesh Kumaran Thampi
Keyword(s):  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Si Engine ◽  
Improved Performance ◽  
Gas Recirculation

Effect of Exhaust Gas Recirculation on Performance of an SI Engine Fueled with Methanol-Gasoline and Ethanol-Gasoline Blend with Hydrogen Boosting

2017 ◽  
Author(s):  
Ashish Jaiswal ◽  
Tarun Mehra ◽  
Monis Alam ◽  
Jatin Agarwal ◽  
Harshil Kathpalia
Keyword(s):  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Si Engine ◽  
Gas Recirculation

Effect of exhaust gas recirculation and hydrogen direct injection on combustion and emission characteristics of a n-butanol SI engine

2020 ◽  
Vol 45 (35) ◽  
pp. 17961-17974 ◽  
Author(s):  
Weiwei Shang ◽  
Xiumin Yu ◽  
Weibo Shi ◽  
Xiaoxue Xing ◽  
Zezhou Guo ◽  
...  
Keyword(s):  
Direct Injection ◽  
Exhaust Gas Recirculation ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
Si Engine ◽  
Gas Recirculation
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