A Compact and Efficient Modular High Pressure Diesel Common Rail Pump Platform for Future Diesel Engine Applications

The invention of the diesel common rail (DCR) fuel system has enabled a complete new performance scope for the operation of the Diesel Engine. Among the most important characteristics, the DCR fuel system provides increased fueling flexibility in both quantity and timing, improved packaging, relatively low weight, and attractive cost to the fuel system integrator. The four main top level requirements for DCR pumps have been identified: (1) Efficiency, (2) Function and Performance, (3) Size and Weight, and (4) Cost. In this paper, the development of key features of Stanadyne’s Modular DCR (MDCR) pump platform will first be described. Design strategies for fuel metering, robustness to debris, increased pressure, increased speed, and increase in B10 life for both an automotive MDCR pump and a heavy duty MDCR pump will be presented. Detailed results from an in-depth analysis of the pumps will be presented. Results of performance testing and durability testing will be presented. Finally, use of the pumps to meet a wide spectrum of future Diesel and Diesel Performance step applications will be discussed.