Phenomenological Modelling of Oxygen-Enriched Combustion and Pollutant Formation in Heavy-Duty Diesel Engines using Exhaust Gas Recirculation

Major exhaust emissions from diesel engines are CO, CO2, PM, UHC and NOx, of which NOx is one of the most harmful. A number of techniques have been utilized to control NOx emissions and exhaust gas recirculation (EGR) is one of the widely used techniques that show outstanding results in NOx reduction in both light and heavy duty diesel engines. In the present study, the experiment has been conducted on a four-stroke, single-cylinder water cooled diesel engine. Here, a long-route EGR system was used in both hot (insulated) and partially cooled (without insulation) conditions. EGR rate was varied from 0 to 24% in steps of 6% and the engine ran at various load conditions. The research objective was to investigate the effects of varying EGR ratios and temperatures on engine performance parameters and determine the effective EGR rate where the engine gives high performance, low fuel consumption and produces low emissions.

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Experimental study of NO reduction on a medium speed heavy duty diesel engine by the application of EGR (exhaust gas recirculation) and Miller timing

Energy ◽

10.1016/j.energy.2014.08.059 ◽

2014 ◽

Vol 76 ◽

pp. 614-621 ◽

Cited By ~ 72

Author(s):

Roel Verschaeren ◽

Wouter Schaepdryver ◽

Thomas Serruys ◽

Marc Bastiaen ◽

Lieven Vervaeke ◽

...

Keyword(s):

Experimental Study ◽

Diesel Engine ◽

No Reduction ◽

Exhaust Gas Recirculation ◽

Exhaust Gas ◽

Heavy Duty ◽

Medium Speed ◽

Heavy Duty Diesel Engine ◽

Heavy Duty Diesel ◽

Gas Recirculation

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Location Isolability of Intake and Exhaust Manifold Leaks in a Turbocharged Diesel Engine With Exhaust Gas Recirculation

Volume 3: Industrial Applications; Modeling for Oil and Gas, Control and Validation, Estimation, and Control of Automotive Systems; Multi-Agent and Networked Systems; Control System Design; Physical Human-Robot Interaction; Rehabilitation Robotics; Sensing and Actuation for Control; Biomedical Systems; Time Delay Systems and Stability; Unmanned Ground and Surface Robotics; Vehicle Motion Controls; Vibration Analysis and Isolation; Vibration and Control for Energy Harvesting; Wind Energy ◽

10.1115/dscc2014-6175 ◽

2014 ◽

Cited By ~ 1

Author(s):

Michael J. Hand ◽

Anna Stefanopoulou

Keyword(s):

Exhaust Gas Recirculation ◽

Fault Detection And Isolation ◽

Exhaust Gas ◽

Exhaust Manifold ◽

Heavy Duty ◽

Turbocharged Diesel Engine ◽

Heavy Duty Diesel ◽

Gas Recirculation ◽

Operating Points ◽

Multiple Operating Points

An investigation into the isolability of the location of intake and exhaust manifold leaks in heavy duty diesel engines is presented. In particular, established fault detection and isolation (FDI) methods are explored to assess their utility in successfully determining the location of a leak within the air path of an engine equipped with exhaust gas recirculation and an asymmetric twin-scroll turbine. It is further shown how consideration of the system’s variation across multiple operating points can lead to improved ability to isolate the location of leaks in the intake and exhaust manifolds.

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