Results 191 to 200 of about 27,634 (237)

Buick's 1972 Exhaust Gas Recirculation System

SAE Technical Paper Series, 1972
<div class="htmlview paragraph">In 1972 models for sale in California, Buick first employed programmed-metered exhaust gas dilution of the engine intake charge as the major means of reducing Oxides of Nitrogen (NOx) emission levels.</div> <div class="htmlview paragraph">With more stringent NOx emission standards applicable nationally ...
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EXHAUST GAS RECIRCULATION EFFECTS ON HYDROGEN-AIR COMBUSTION

Combustion Science and Technology, 2007
The effects of residence and micro mixing time scales on NOx formation in hydrogen combustion are modeled, using idealized Partially Stirred Reactors (PaSR), with stochastic Monte-Carlo simulations...
P. PRASAD, S. MAHALINGAM
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Studies of exhaust-gas recirculation for VTOL aircraft

3rd Propulsion Joint Specialist Conference, 1967
The ingestion of hot, recirculated exhaust gas is an important consideration for VTOL aircraft since it can lead to serious performance penalties and engine handling problems. Model scaling laws have been established by other investigators and the reliability of the scaling has been confirmed by unpublished results of model and full-scale tests on the ...
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Exhaust gas recirculation in medium speed gas engines

MTZ worldwide, 2004
In the project presented in this article by WTZ Roslau gGmbH, the impact of cooled exhaust gas recirculation was tested on a single-cylinder gas engine in lean mixture conditions. Special focus was on the basic engine parameters, such as thermal efficiency, brake mean effective pressure (BMEP), knocking behaviour and a reduction in the emission of ...
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New Gas Flow Sensor for Exhaust Gas Recirculation

ATZautotechnology, 2003
Exhaust gas recirculation (EGR) reduces the formation of NOx and Diesel soot. An exhaust gas recirculation valve, controlled by the engine characteristic map, meters the recirculated gas rate. A new concept of a gas rate sensor developed by Heraeus Sensor Technology seems to bring about a clear improvement in this respect.
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Exhaust Gas Recirculation in a Lean-Burn Natural Gas Engine

SAE Technical Paper Series, 1998
<div class="htmlview paragraph">Lean-burn natural gas engines offer attractively low particulate matter emissions and enjoy higher efficiencies than their stoichiometric counterparts. However, even though oxides of nitrogen emissions can be reduced through operation at lambda ratios of greater than 1.3, catalysts cannot reduce the oxides of ...
Sumit Bhargava, Nigel N. Clark, M. Wayne Hildebrand   +2 more
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A new gasoline injector with exhaust gas recirculation

2008 IEEE Vehicle Power and Propulsion Conference, 2008
A new injector is presented for improving the gasoline spray and combustion by utilizing the exhaust gases. This new gasoline injector has two magnetic coils attracting two armatures correspondingly, one controlling the pressurized exhaust gases, and another operating the gasoline. The exhaust gases mix with the gasoline at the tip of injector in order
Xiaolu Li, null Xiaoming Fang
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Effectiveness of Exhaust Gas Recirculation With Extended Use

SAE Technical Paper Series, 1971
<div class="htmlview paragraph">Exhaust gas recirculation (EGR) was found to be an effective means of reducing automotive NO_x levels with no major unsolvable problems over 52,000 miles under city/suburban driving conditions. Compatible with air injection and engine modification systems for HC and CO control, EGR effectively
G. S. Musser, J. A. Wilson, R.G. Hyland, H.A. Ashby   +3 more
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Exhaust gas recirculation for advanced diesel combustion cycles

Applied Energy, 2014
Modern diesel engines tend to utilize significantly large quantities of exhaust gas recirculation (EGR) and high intake pressures across the engine load range to meet NOx targets. At such high EGR rates, the combustion process and exhaust emissions tend to exhibit a marked sensitivity to small changes in the EGR quantity, resulting in unintended ...
Usman Asad, Ming Zheng
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Model Predictive Control of Exhaust Gas Recirculation Valve

SAE Technical Paper Series, 2010
<div class="section abstract"><div class="htmlview paragraph">Exhaust Gas Recirculation (EGR) valves have been used in diesel engine operation to reduce NOx emissions. In EGR valve operation, the amount of exhaust gas re-circulating back into the intake manifold is controlled through the open position of the valve plate to keep the ...
Nazila Rajaei, Xiaoye Han, Xiang Chen, Ming Zheng   +3 more
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