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SAE Technical Paper Series, 1997
<div class="htmlview paragraph">Lean burn and EGR are two commonly used technologies for improving fuel consumption and controlling emissions. Each has advantages and disadvantages when applied to an engine and, qualitatively at least, these effects are well known. To meet future emissions and fuel consumption constraints, most production engines
Grant Lumsden +2 more
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<div class="htmlview paragraph">Lean burn and EGR are two commonly used technologies for improving fuel consumption and controlling emissions. Each has advantages and disadvantages when applied to an engine and, qualitatively at least, these effects are well known. To meet future emissions and fuel consumption constraints, most production engines
Grant Lumsden +2 more
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SAE Technical Paper Series, 1988
<div class="htmlview paragraph">Theoretical analysis of flame propagation through catalytically activated mixtures and fundamental experiments with a catalytic plug-flow reactor have shown that catalytic prereaction can increase flame velocity and can reduce minimum ignition energy requirements.
Steven W. Beyerlein, Stanislaw Wojcicki
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<div class="htmlview paragraph">Theoretical analysis of flame propagation through catalytically activated mixtures and fundamental experiments with a catalytic plug-flow reactor have shown that catalytic prereaction can increase flame velocity and can reduce minimum ignition energy requirements.
Steven W. Beyerlein, Stanislaw Wojcicki
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Development of Lean Burn Catalyst
SAE Technical Paper Series, 1995<div class="htmlview paragraph">A new type of three way catalyst for lean engine was developed in order to reduce hydrocarbon (HC), carbon-monoxide (CO) and nitrogen-oxides (NOx) in lean exhaust gas. This catalyst has a base support material of MFI zeolite loaded with active metals including platinum (Pt), iridium (Ir) and rhodium (Rh). It showed
Akihide Takami +4 more
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Ignitability Experiments in a Fast Burn, Lean Burn Engine
SAE Technical Paper Series, 1983<div class="htmlview paragraph">This paper demonstrates the first successful use of factorial statistical analysis in quantifying the effect of ignition system parameters on lean operation of a fast burn single cylinder engine. Ignition parameters investigated include plug type, plug number, ignition system, plug location, and ground electrode ...
R. W. Anderson, J. R. Asik
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Multivariable Control of Lean-Burn Engines
IFAC Proceedings Volumes, 1987Abstract Lean-bum engines need extremely accurate closed-loop controls both during static operation and during transients in order to prevent misfires and excessive emissions of hydro-carbons, to achieve stable combustion and low engine roughness, and to obtain good response to throttle commands.
C.E. Baumgartner +2 more
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Development of Toyota Lean Burn Engine
SAE Technical Paper Series, 1976<div class="htmlview paragraph">This engine has been developed to achieve lean combustion. A prechamber which is named as the Turbulence Generating Pot (TGP) was developed to extend the lean misfire limit and also to increase flame propagation velocity.
M. Noguchi, S. Sanda, N. Nakamura
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NO storage/reduction over lean-burn automotive catalysts
Applied Catalysis B: Environmental, 2007This paper shows the behavior of a Pt/Ba/¿–Al2O3 automotive catalyst in a fixed bed reactor during cyclic operation at lean and rich gas phase conditions at short (seconds) and long (hours) cycling times at different temperatures. Reactor exit gas phase concentrations have been measured and catalyst properties have been determined before and after ...
Scholz, C.M.L. +3 more
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Development of Methanol Lean Burn System
SAE Technical Paper Series, 1986<div class="htmlview paragraph">A methanol fueled, lean burn system has been developed to improve both specific fuel consumption and NOx emissions.</div> <div class="htmlview paragraph">A 1.6L four-cylinder engine with increased compression ratio has been used to develop this system.
Kenji Katoh +2 more
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Lean Burn Versus EGR S. I. Engine
SAE Technical Paper Series, 1995<div class="htmlview paragraph">Lean burn and EGR concepts are being used increasingly in spark-ignition engines. Compared with a stoichiometric petrol engine, however, these dilution concepts are said to give a certain reduction in power output, in particular with higher EGR ratios or under lean mixtures near the minimum flammability limit. Some
J. Hacohen +2 more
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Homogeneous Chemistry in Lean-Burn Exhaust Mixtures
The Journal of Physical Chemistry A, 1997The search for catalysts capable of reducing NOx in the exhaust of internal combustion engines operated in the lean-burn mode is presently focused on copper-exchanged zeolites. Despite intensive study, the mechanism of reduction over these catalysts is not well understood. In this study new complications are revealed.
Julian Smith +5 more
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