PAIRCUI- A New Pressure Accumulative, Injection Rate Controllable Unit Injector for Diesel Engine Fuel Systems

971680

05/01/1997

Event
International Spring Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
A pressure accumulative injection rate controllable unit injector-PAIRCUI is proposed and developed. This unit injector is powered by fuel pressure accumulation controlled by an electronic control unit and its injection rate is shaped by inner valves of the injector.
Inherent advantages of an accumulator type unit injector have been carried out in this new design, including sructural simplicity, totally flexible injection timing, medium common rail pressure, tolerable pump size and flow requirement. A number of decisive features have also been realized that are significant for high efficiency and low emissions of engine combustion, including higher mean effective injection pressure(MEIP), pilot injection capability and rapid end of injection. The injection pressure is independent of engine speed, but regulated upon engine load. These characteristics are beneficial in improving engine performance and fuel consumption. Installing PAIRCUI Fuel System on an engine is convenient since the injector holder is designed as a standardized P or S size and a conventional P or S nozzle tip is incorporated as a part of the injector.
Meta TagsDetails
DOI
https://doi.org/10.4271/971680
Pages
12
Citation
Su, W., Wang, Y., Li, S., Xie, H. et al., "PAIRCUI- A New Pressure Accumulative, Injection Rate Controllable Unit Injector for Diesel Engine Fuel Systems," SAE Technical Paper 971680, 1997, https://doi.org/10.4271/971680.
Additional Details
Publisher
Published
May 1, 1997
Product Code
971680
Content Type
Technical Paper
Language
English