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Fuel Sprays for Premixed Compression Ignited Combustion - Characteristics of Impinging Sprays
Technical Paper
2004-01-1776
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
For homogeneous charge compression ignition (HCCI) engines with direct-injected fuel (also called PCI, Pre-mixed Compression Ignition), it is important to achieve a lean and homogeneous mixture before ignition. For this purpose, impinging diesel sprays have proven to be useful. In this study, an evaluation of the overall air/fuel ratio of such sprays was made in a test rig. The test rig consists of a pressurized vessel with optical access and a Common Rail (CR) fuel injection system. The investigation was made for impinging spray nozzles with different impingement angles and orifice diameters. Three gas back pressures and three injection pressures were evaluated. The evaluation was based on images of the fuel sprays taken in the test rig. The fuel spray images were automatically processed using in-house developed software. The results of the investigation points out some important factors to obtain a lean spray, (a high air/fuel ratio). The investigation also points out some factors that give a low spray penetration for a certain injected mass of fuel.
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Wåhlin, F. and Cronhjort, A., "Fuel Sprays for Premixed Compression Ignited Combustion - Characteristics of Impinging Sprays," SAE Technical Paper 2004-01-1776, 2004, https://doi.org/10.4271/2004-01-1776.Also In
References
- Christensen M. Johansson B. “Influence of Mixture Quality on Homogeneous Charge Compression Ignition” SAE Paper No. 982454
- Christensen M. et. al. “Supercharged Homogeneous Charge Compression Ignition” SAE Paper No. 980787
- Gray Allen W. Ryan Thomas W. “Homogeneous Charge Compression Ignition (HCCI) of Diesel Fuel” SAE Paper No. 971676
- Harada Akira et. al. “The effects of Mixture Formation on Premixed Lean Diesel Combustion” SAE Paper No. 980533
- Yamamoto Hiroshi Niimura Keiichi “Characteristics of Fuel Sprays from Specially Shaped and Impinging Flow Nozzles” SAE Paper No. 950082
- Iwabuchi Y. et. al. “Trial of New Concept Diesel Combustion System - Premixed Compression-Ignited Combustion” SAE Paper No. 1999-01-0185
- Nandha K.P. Abraham J. “Dependence of Fuel-Air Mixing Characteristics on Injection Timing in an Early-Injection Diesel Engine” SAE Paper No. 2002-01-0944
- Wickerfält J. “Konstruktion av system för visualisering av bränslesprayer” Master thesis work at Internal Combustion Engines Royal Institute of Technology Stockholm, Sweden 2002