Experimental and computational study of a high-speed direct injection diesel engine with high-pressu
Researchers: D. Melas, Dr. Y. Zhu
Supervisors: Prof. N. Ladommatos, Prof. H. Zhao
Sponsors: Ford Motor Company
Objective & Methodology
To investigate the effect of piston bowl geometry on the performance and emissions of a HSDI diesel engine.
Ford 2.0l HSDI CR Diesel Engine
| Number of Cylinders | 4 |
| Bore (mm) | 86 |
| Stroke (mm) | 86 |
| Connecting Rod Length (mm) | 160 |
| Piston Bowl Volume (cm3) | 21.7 |
| Compression Ratio | 18.2:1 |
| Fuel System | D.I. with Common Rail |
| Number of Injection Holes | 6 |
| Injection Hole Diameter (mm) | 0.159 |
| Injection Cone Angle (deg) | 154 |
Computational Mesh
Experimental Results
Full Load
(Left) BSFC at full load condition (2000-rpm maximum torque, 4000-rpm maximum power @ optimum protrusion) for Piston Bowl Shape 1, 2 and 3
(Right) BMEP at full load test condition (2000-rpm maximum torque, 4000-rpm maximum power @ optimum protrusion) for Piston Bowl Shape 1, 2 and 3
Part Load
(Left) Total NOx and particulates for the 5-modes tests for Piston Bowl 1, 2 and 3
(Right) Total BSFC for the 5-modes tests for Piston Bowl 1, 2 and 3
In-cylinder Equivalence Ratio & Temperature @ 1600rpm
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18° ATDC |
24° ATDC |
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Bowl 1 |
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Bowl 2 |
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Bowl 3 |
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