This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Fuel Stratification Process in the Cylinder of an Axially Stratified Engine
Technical Paper
2000-01-2842
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The Fuel stratification process has been investigated in the cylinder of an axially stratified lean burn engine by visualizing fuel behavior. Planar laser light sheet from an Nd:YAG laser has been illuminated through the transparent quartz cylinder of a single cylinder optical engine. Mie scattered light has been captured through the quartz window in the piston head with an ICCD camera. Fuel has been replaced with an ethanol droplets to utilize an atomized fuel spray for visualization purposes. Swirl ratios have been varied by changing cylinder heads with different swirl numbers and injection time has been varied to find the effect of fuel stratification. A higher lean mixture limit was achieved when the fuel remained at the combustion chamber as stratified with the proper combination of fuel injection timing swirl flow. The stratification was governed by tumble motion in no/low swirl ports on the other hands this is determined by short penetration depth and strong swirl of the middle cylinder area, which plays a role of supporting upper-rich state, in high swirl port.
Recommended Content
Authors
Citation
Ohm, I. and Cho, Y., "Fuel Stratification Process in the Cylinder of an Axially Stratified Engine," SAE Technical Paper 2000-01-2842, 2000, https://doi.org/10.4271/2000-01-2842.Also In
References
- Kalghatgi G.T. “Spark Ignition, Early Flame Development and Cyclic Variation in IC Engines” SAE Paper 870163 1987
- Takeda Keiso “Toyota Central Injection (CI) System for Lean Combustion and High Transient Response” SAE Paper 851675 1985
- Horie Kaoru “The Development of High Fuel Economy and High Performance Four-Valve Lean Burn Engine” SAE Paper 920455 1992
- Harada Jun “Development of a New Generation Lean Burn Engine” SAE Paper 924068 1992
- Nakanish K. “Development of a new intake system for a 4-valve lean burn engine” SAE Paper 925020 1992
- Ohm In-Young Ahn Hee-Seok Lee Woo-Jik Kim Woo-Tae Park Sim-Soo Lee Dae-Un “Development of HMC Axially Stratified Lean Combustion Engine” SAE Paper 930879 , 1993 SAE Transaction 1994
- Saito F. “Mazda Advanced Lean Burn Engine with New Three-Way Catalyst” SAE Paper 945006 1994
- Ohm I. Y. Jeong K. S. Jeung I. S. “Effects of Fuel Injection Timing on the Lean Misfire Limit in an SI Engine,” SAE Paper 970028 1997 1997 SAE Transaction 1998
- Rho Y. J. Ohm I. Y. Jeong K. S. Jeung I. S. “Fuel Stratification Measurements in a Steady Flow Rig Using Laser Rayleigh Scattering” Proceedings of the First ASPACC 314 317 Osaka, Japan 1997
- Ohm I. Y. Jeong K. S. Yoon Y. Jeung I. S. “Initial Flame Development under Fuel Stratified Condition” SAE Technical Paper 981429 1998 1998 SAE Transaction 1999
- Heywood John B. “Internal Combustion Engine Fundamentals” McGraw-Hill 343 345 1988