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| Content Provider | Springer Nature Link |
|---|---|
| Author | Shin, Younggy |
| Copyright Year | 1997 |
| Abstract | The liquid fuel behavior in the intake port and the cylinder during starting and warm-up was visualized through visualization windows using a high speed CCD camera. The videos were taken with the engine firing under cold conditions in the simulated start up process, at 1.000 and 1.200 RPM and intake manifold pressure of 0.5 bar. The variables examined were the injector geometry and injector type (normal and air-assisted). The visualization results show several features of the liquid fuel behavior: 1) backward strip-atomization of the fuel film along the periphery of the intake valves by the valve overlap backflow: 2) forward strip-atomization of the fuel film on the surfaces of the intake system into droplet streams by the intake air flow: 3) film flow which forms significant liquid puddles at the valve surface and at the vicinity of the intake value: and 4) squeezing of the liquid film at the valve lip and seat into large droplets in the valve closing process. Some of the liquid fuel survives combustion into the next cycle. The time evolution of the in-cylinder liquid film is influenced by the injection geometry and port surface temperature. Photographs showing the liquid fuel features and an explanation of the observed phenomena are given in the paper. |
| Starting Page | 582 |
| Ending Page | 593 |
| Page Count | 12 |
| File Format | |
| ISSN | 1738494X |
| Journal | Journal of Mechanical Science and Technology |
| Volume Number | 11 |
| Issue Number | 5 |
| Language | English |
| Publisher | Korean Society of Mechanical Engineers |
| Publisher Date | 1997-01-01 |
| Publisher Place | Seoul |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Liquid Fuel Starting Warm Up Visualization CCD Camera High Speed Photography Fuel Film Hydrocarbon Emissions Mixture-Preparation Fuel Injector Spark Ignition Engine Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanics of Materials Mechanical Engineering |
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