SPRAY CHARACTERISTICS AND COMBUSTION IMPROVEMENT OF DI DIESEL ENGINE WITH HIGH PRESSURE FUEL INJECTION

The paper discusses a high pressure injection equipment (HPIE), which is an electronically controlled, hydraulic pressure-intensified system that can produce 250MPa, that has been developed. This equipment has been evaluated with shadow photographs for analyzing non-evaporating fuel spray characteristics. It was found that the fuel injected at high pressure forms a finer and more homogeneous spray. When the HPIE was fitted to a naturally aspirated 2 liter single-cylinder diesel engine and tested, it was found that black smoke and particulate emissions decreased, under suitable injection timing for low NOx emission. The emission test data at 220MPa of injection pressure shows that more than 80% reduction of particulate emission has been realized at the same NOx level. These results indicate that the high pressure fuel injection is an effective means for reducing NOx, smoke and particulate emissions. For the covering abstract see IRRD 865952.

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  • English

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Filing Info

  • Accession Number: 00668291
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-89883-431-7
  • Files: ITRD
  • Created Date: Nov 2 1994 12:00AM