This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Single Cylinder Diesel Engine Startup Experiments with Cycle Resolved Emissions Sampling
Technical Paper
2009-01-0614
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Fast emissions analysis, soot analysis, and pressure sensing is utilized to examine the first few seconds before, and after startup in a single-cylinder CFR diesel engine. The equivalence ratio, compression ratio, and injection timing are varied. The data show that UHC and CO emissions are highest at the highest and lowest fueling conditions, while NOx emissions peaked at intermediate fueling conditions. Leaner operating conditions show delayed starting but reduced ignition delay. Oil vapor causes soot emissions prior to first combustion, and soot particle size shifts higher during the first few seconds after combustion begins. Injection timing has little effect except at the leanest equivalence ratios, where a retarded injection timing increases the delay until a successful combustion event. At lower compression ratios, large IMEP oscillations occurred during startup. The data suggest possible strategies to optimize diesel startup.
Recommended Content
Authors
Topic
Citation
Cowart, J., Marr, W., Brown, L., Caton, P. et al., "Single Cylinder Diesel Engine Startup Experiments with Cycle Resolved Emissions Sampling," SAE Technical Paper 2009-01-0614, 2009, https://doi.org/10.4271/2009-01-0614.Also In
SI and CI Engine Cold Start and Transient Emissions and Control, 2009
Number: SP-2246; Published: 2009-04-20
Number: SP-2246; Published: 2009-04-20
References
- Zhong L. Gruenewald S. Henein N. Bryzik W. ‘Lower Temperature Limits for Cold Starting of Diesel Engine with a Common Rail Fuel Injection System’ SAE Paper # 2007-01-0934 2007
- Ueda T. Zhang L. Gabe M. ‘Improvement of the Cold Startability of Common Rail Injection System by Pilot Injection’ SAE Paper 1999-08-0355 1998
- Osuka I. Nishimura M. Tanaka Y. Miyaki M. ‘Benefits of New Fuel Injection System Technology on Cold Startability of Diesel Engines – Improvement of Cold Startability and White Smoke Reduction by Means of Multi-Injection and Common Rail Fuel System’ SAE Paper 940586 1994
- Zhong L.R. Singh I.P. Han J. Lai M-C Henein N. ‘Effect of Cycle-to-cycle Variation in the Injection Pressure in a Common Rail Diesel Injection System on Engine Performance’ SAE 2003-01-0699 2003
- Pacaud P. Perrin H. Laget O. ‘Cold Start on Diesel Engine: Is Low Compression Compatible with Cold Start Requirements’ SAE Paper 2008-01-1310 2008
- Zhong L. Singh I. Han J. Lai M-C Henein N. ‘A Mathematical Model of the Cranking Period in the Cold Start of Diesel Engines’ IMECE 2003-43990 ASME International Mechanical Engineering Congress and Expo Washington, DC 2003
- Han Z. Henein N. Nitu B. Bryzik W. ‘Diesel Engine Cold Start Instability and Control Strategy’ SAE Paper # 2001-01-1237 2001