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

2012 ◽  
Vol 5 (4) ◽  
pp. 1693-1708 ◽  
Author(s):  
Dimitrios Hountalas ◽  
Spiridon Raptotasios ◽  
Theodoros Zannis ◽  
Roussos Papagiannakis
Keyword(s):  
Diesel Engines ◽  
Exhaust Gas Recirculation ◽  
Exhaust Gas ◽  
Heavy Duty ◽  
Pollutant Formation ◽  
Heavy Duty Diesel ◽  
Gas Recirculation

Experimental investigation to study the effects of using hot and partially cold EGR in direct injection diesel engine

TECHNOLOGY ◽  
2016 ◽  
Vol 04 (03) ◽  
pp. 170-173 ◽  
Author(s):  
Radhey Sham ◽  
Rajesh Kumar Saluja ◽  
Gurwinder Singh ◽  
Vineet Kumar ◽  
Shubham Parmar
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
High Performance ◽  
Direct Injection ◽  
Engine Performance ◽  
Exhaust Gas ◽  
Performance Parameters ◽  
Heavy Duty ◽  
Heavy Duty Diesel ◽  
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.

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

2014 ◽  
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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