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External Exhaust Gas Recirculation
2019In diesel engines, NOx (Oxides of Nitrogen) forms when the flame temperature in the combustion chamber exceeds 2000 K. Late injection of fuel into the combustion chamber decreases NOx at the cost of fuel efficiency by 10–15%. Recirculating a part of the exhaust gas into the combustion chamber is termed as exhaust gas recirculation (EGR) which helps in ...
P. Sahaya Surendira Babu, P. Kumar
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Redesigning exhaust-gas recirculation systems in sintering
Steel in Translation, 2008The recirculation of hot gases (air from the sinter coolers or the cooling zone, sintering waste gases) permits energy conservation and environmental protection in sinter production. A benefit of gas recirculation is the reduced atmospheric emission of harmful materials (CO, CO 2 , H 2 S, SO 2 ) and dust.
A. A. Vyatkin +4 more
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Friction stir welded exhaust gas recirculation coolers
ATZproduktion worldwide, 2009Pierburg GmbH has launched into series production the first die-cast aluminium exhaust gas recirculation coolers for installation in diesel engines on which the innovative friction stir welding method is used for joining together the components. These coolers are remarkable for their high cooling performance combined with a compact footprint. The newly
Uwe Krawinkel, Oliver Thomer
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Gasoline engine exhaust gas recirculation – A review
Applied Energy, 2012Abstract EGR technique, as one of effective measures to reduce NO X formation, was firstly adopted in diesel engines. But with the growing energy and environment problems, EGR has been commonly used also in gasoline engines together with other advanced techniques.
Haiqiao Wei +4 more
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Innovative electronically controlled: Exhaust gas recirculation valve
MTZ worldwide, 2003The methods of external exhaust gas recirculation are becoming ever more important, particularly when it comes to reducing nitrogen oxides. This article from Pierburg GmbH in Neuss presents a new type of electronically controlled exhaust gas recirculation valve, which is capable of meeting the future requirements of the market.
Peter Klotzbach +2 more
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Optimizing Engine Parameters with Exhaust Gas Recirculation
SAE Technical Paper Series, 1974<div class="htmlview paragraph">In addition to designing and developing hardware to control the exhaust gas recirculation (EGR) rate, it is equally important to tailor the other engine variables. Optimization of air-fuel ratio (A/F) and spark timing is required to achieve the best combination of oxides of nitrogen (NO<sub>x</sub> ...
James J. Gumbleton +2 more
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Reduction in Exhaust Gas Temperature of Biodiesel Fueled Engine by Exhaust Gas Recirculation
CLEAN – Soil, Air, Water, 2008AbstractBiodiesel is a renewable alternative fuel that can be used as substitute for mineral diesel. The use of biodiesel in diesel engines reduces all of the exhaust emissions expect NOx. The higher temperature in the combustion chamber increases the NOx emissions.
Arumugam Sakunthalai Ramadhas +2 more
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Optimization of Exhaust Gas Recirculation System
SAE Technical Paper Series, 2011<div class="section abstract"><div class="htmlview paragraph">Exhaust Gas Recirculation (EGR) is a method to control Nitrogen Oxide (NOx) emissions from automobile exhaust. In this method, small amount of the exhaust gas is recirculated into the combustion chamber through the air intake system.
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Inverted Brayton Cycle With Exhaust Gas Recirculation—A Numerical Investigation
Journal of Engineering for Gas Turbines and Power, 2013Microgas turbine (MGT) based combined heat and power (CHP) units provide a highly efficient, low-pollutant technology to supply heat and electrical power from fossil and renewable energy sources; however, pressurized MGT systems in an electrical power range from 1 to 5 kWel utilize very small turbocharger components. These components suffer from higher
Henke, Martin +2 more
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Combined Exhaust Gas Recirculation and VTG: Control
2021In this chapter, various control algorithms for the combined control of burnt gas ratio and intake manifold pressure are investigated. Based on the process model derived, three model-based controllers are designed. The most elaborate one of them is a nonlinear model predictive control (NMPC) algorithm.
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