Results 41 to 50 of about 699,761 (252)

Flame Front Propagation in an Optical GDI Engine under Stoichiometric and Lean Burn Conditions

Energies, 2017
Lean fueling of spark ignited (SI) engines is a valid method for increasing efficiency and reducing nitric oxide (NOx) emissions. Gasoline direct injection (GDI) allows better fuel economy with respect to the port-fuel injection configuration, through ...
Santiago Martinez, Adrian Irimescu, Simona Silvia Merola, Pedro Lacava, Pedro Curto-Riso   +4 more
doaj   +1 more source

Experimental study on combustion and emission of ternary-fuel combined supply SI engine with oxyhydrogen/butanol/gasoline at different excess air ratios

Case Studies in Thermal Engineering, 2023
Both oxyhydrogen and butanol are renewable alternative fuels. Based on gasoline/butanol compound injection mode, although the introduction of oxyhydrogen can effectually enhance the optimal BDIr (butanol direct injection ratio), it also leads to an ...
Zhe Zhao, Yan Huang, Zhen Shang, Xiumin Yu, Ping Sun, Luquan Ren, Tao Sang, Ming Li, Ziyuan Li   +8 more
doaj   +1 more source

Non-linear simulations of combustion instabilities with a quasi-1D Navier-Stokes code

, 2010
As lean premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems, there is an increasing demand for improved numerical design tools that can predict the occurrence of combustion instabilities with high ...
Allam, Annaswamy, Baillot, Bell, Boyer, Candel, Cohen, Culick, Culick, Davies, Disselhorst, Ditaranto, Dowling, Ducruix, Fichera, Fleifil, Keller, Levine, McManus, Nils Erland L. Haugen, Peters, Poinsot, Polifke, Polifke, Prasad, Rayleigh, Schuller, Sigurd Sannan, White, Øyvind Langørgen   +29 more
core   +1 more source

The Influence of Injector Nozzle Diameter on High-Density and Lean Mixture Combustion in Heavy-Duty Diesel Engines

Energies
In order to improve the fuel economy of heavy-duty diesel engines under high-load conditions, based on the combustion pathway model, it is proposed that the proportion of lean mixture with 0 < Φ < 1 is the most important spray characteristic affecting ...
Yize Liu, Wanhua Su
doaj   +1 more source

Experimental Studies of Low-Load Limit in a Stoichiometric Micro-Pilot Diesel Natural Gas Engine

Energies, 2022
While operating at light loads, diesel pilot-ignited natural gas engines with lean premixed natural gas suffer from poor combustion efficiency and high methane emissions.
Vinicius Bonfochi Vinhaes, Gordon McTaggart-Cowan, Sandeep Munshi, Mahdi Shahbakhti, Jeffrey D. Naber   +4 more
doaj   +1 more source

Effect of air-preheating on NOx emissions from a gas turbine combustor [PDF]

, 1994
A 76 mm diameter can combustor equipped with a 45° curved-blade radial swirler was used to study the effect of high inlet temperature gas turbine combustion on NOx emission characteristics.
Mustafa, Azeman
core  

Lean Premixed Combustion/Active Control [PDF]

, 2000
An experimental comparison between two contrasting fuel-air swirlers for industrial gas turbine applications was undertaken at the United Technologies Research Center. The first, termed an Aerodynamic nozzle, relied on the prevailing aerodynamic forces to stabilize the downstream combustion zone.
openaire   +2 more sources

Simulation of lean premixed turbulent combustion

Journal of Physics: Conference Series, 2006
There is considerable technological interest in developingnew fuel-flexible combustion systems that can burn fuels such ashydrogenor syngas. Lean premixed systems have the potential to burn thesetypes of fuels with high efficiency and low NOx emissions due to reducedburnt gas temperatures.
Bell, John B., Day, Marcus S., Almgren, Ann S., Lijewski, Michael J., Rendleman, Charles A., Cheng, Robert K., Shepherd, Ian G.   +6 more
openaire   +2 more sources

Study on the lean limit and thermal efficiency of an SI engine equipped with newly developed in-cylinder flow-control adapter

Journal of Thermal Science and Technology
Lean combustion technology has been one of the promising approaches for developing next-generation engines with high thermal efficiency and low environmental impact. However, the practical lean limit of such engines is typically constrained by combustion
Tatsuhiro MIWA, Ye WANG, Sayaka SUZUKI, Mamoru TANAHASHI   +3 more
doaj   +1 more source

Estimation of combustion efficiency range and pressure fluctuation at low working condition

Energy Reports, 2022
The exact data of combustion efficiency are rare in the open literature near the ignition and at sub-idle, especially at the state close to the lean blowout limit, due to the complexity of combustion characteristics and inconvenience of measurement in ...
Yixiang Yuan, Mengmeng Zhao, Huazhang Yu, Wenzhe Li, Baoting Guo, Qinghua Zeng, Bosheng Su   +6 more
doaj   +1 more source