This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Premixed Lean Diesel Combustion (PREDIC) using Impingement Spray System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 07, 2001 by SAE International in United States
Annotation ability available
Premixed lean Diesel Combustion (PREDIC) provides low NOx, however, it has some challenges associated with high HC emission, high fuel consumption and difficult timing control of compression ignition. To solve these problems, an impingement spray system with two injectors was tested to obtain positional controllability and larger volume of the air-fuel mixture formation in our previous study. The positional controllability means mainly the fuel mixture formation is the center of the cylinder with some space from the cylinder wall. The larger volume means the fuel mixture formation is leaner air-fuel mixture than that of free spray, which results in a possibility of higher thermal efficiency. Thus, the impingement spray system has a possibility of HC reduction and fuel consumption improvement in PREDIC.
In this study, we applied this system to PREDIC using a heavy-duty single cylinder engine with two injectors to evaluate the effects of injection timing, boost pressure and injection pattern etc. It has a possibility to reduce CO and HC by split injection pattern without increasing NOx.
CitationNishijima, Y., Asaumi, Y., and Aoyagi, Y., "Premixed Lean Diesel Combustion (PREDIC) using Impingement Spray System," SAE Technical Paper 2001-01-1892, 2001, https://doi.org/10.4271/2001-01-1892.
- Yanagihara H. et al “A Simultaneous Reduction of NOx and Soot in Diesel Engines Under a New Mixture Preparation,” The 73 rd JSME Fall Annual Meeting 1995-9 45 47
- Suzuki H. et al “Study on Homogeneous Charge Combustion Diesel Engine (3 rd Report),” JSAE Fall Convention 1996-10 229 232
- Takeda Y. et al “Emission Characteristics of Lean Premixed Diesel Combustion with an Advanced Fuel Injection Timing,” The 73 rd JSME Fall Annual Meeting 1995-9 188 189
- Takeda Y. et al “The Effects of Mixture Formation on Premixed Lean Diesel Combustion,” SAE Paper (1998-3), 980533
- Hiroyasu H. et al “Effect of Spatial Distribution of Fuel Sprays on Diesel Spray Combustion,” The 12 th Internal Combustion Engine Symposium Japan 1995-7 217 222
- Arai M. et al “Spray-to-Spray Impingement Behavior of Diesel Spray,” The Seventh Symposium on Atomization 1998-12 249 254
- Chiba T. et al “Spray-to-Spray Impingement Behavior of a Diesel Spray,” The Eighth Symposium on Atomization 1999-12 179 184
- Nishijima Y. et al “Adequate Spray Formation for Premixed Lean Diesel Combustion (PREDIC),” JSAE Fall Convention 2000-10
- Nishijima Y. et al “Adequate Spray Formation for Premixed Lean Diesel Combustion (2 nd Report),” The Ninth Symposium on Atomization 2000-12 285 288
- Hiroyasu H. et al “Mechanism of Diesel Spray and its Combustion,” JSAE Symposium Japan 1998-3 49 56