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| | Effect of Fuel Injection Stategies and Air Motion in a Medium-to-Heavy Duty, Direct-Injected, ASpark-Ignited, ... |
 | | In DISI engines, the interaction between the fuel spray and in-cylinder air motion plays a crucial role in the mixture preparation process, which, in turn, has a profound impact on the engines performance and emissions characteristics. |
 | | This goal was accomplished via a two-pronged approach: 1) droplet size measurements in a high-pressure chamber were used to characterize the fuel spray from commercial DI injectors under engine-like conditions, and 2) a prototype medium-duty DISI engine was developed to study the effect of injection and spark timing on performance and emissions behavior. |
 | | Detailed knowledge of the spray characteristics (that is, droplet size, velocity, and distribution in space) under engine-like conditions is instrumental in understanding the fuel vaporization and mixture preparation processes. |
| www.swri.org /3pubs/IRD1999/03902499.htm (377 words) |
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