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ACS Catalysis, 2013 AIR:MATERIAUX:INGENIERIE+YIC:YGU:PVEHerein, we report the Pd-doped perovskite La0.7Sr0.3CoO3 as an effective lean NOx trap (LNT) catalyst. This smart perovskite displays excellent NOx reduction activities for lean-burn exhausts (NOx conversion >90%, N-2 ...
Xingang Li, Hui Xian, Zheng Jiang
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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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Evolution of Lean-NOx Traps on PFI and DISI Lean Burn Vehicles
SAE Technical Paper Series, 1999<div class="htmlview paragraph">This paper charts the development of three three-way catalyst (TWC) and four lean-NOx trap (LNT) formulations in four vehicle systems over a four-year period. All LNTs were installed in an underbody location behind a close-coupled TWC on vehicles equipped with either port fuel injection (PFI) or direct injection ...
D. Gregory +6 more
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Improvement on ignition and lean blowout performances of a piloted lean-burn combustor
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2016This work focuses on optimizing the flame stability by matching the primary spray with swirling air streams in swirl cup which is used as pilot stage of a lean-burn fuel injector. Two configures of pressure-swirl atomizer for pilot spray have been investigated for their ignition and lean blowout (LBO) performances, the new designed
Cunxi Liu +6 more
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Study on simulation of Lean NOx Trap for lean burn gasoline engine
2011 Second International Conference on Mechanic Automation and Control Engineering, 2011The adsorption reduction mechanism and main chemical reactions were analyzed. After that, a Lean NOx Trap (LNT) model based on Simulink was constructed in this paper. Grounded on our calculation results, precisely control of the transition between rich and lean combustion mode was obtained.
null Jia Xuyan +4 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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Adaptive intake oxygen estimation in lean-burn engines
2012 American Control Conference (ACC), 2012The oxygen concentration in the intake manifold of a lean-burn engine is a key variable that is directly related to the quality of combustion. In this paper, an adaptive observer is developed to estimate the intake oxygen concentration in the intake manifold of a lean-burn engine using measurements from existing sensors with minimum computational load.
Jun-Mo Kang +3 more
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Prechamber for Lean Burn for Low NOx
SAE Technical Paper Series, 1995<div class="htmlview paragraph">To ignite very lean natural gas mixture it is necessary to use prechambers. The extension of lean limit of a combustion system is given by citing an example. The orifice diameter from the prechamber to the main chamber has a strong effect. The magnitude of the effect for one particular example is shown.
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Lean burn: A Review of Incentives, Methods, and Tradeoffs
SAE Technical Paper Series, 1988<div class="htmlview paragraph">A summary of theoretical considerations that motivate the development of lean burn systems is presented along with a review of the most common approaches used to implement this technique. An analysis of experimental data from several sources is then introduced in order to substantiate the advantages and indicate ...
Aparicio J. Gomez, Paul E. Reinke
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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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