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, Volume 70, Issue 5, pp 10–15 | Cite as

Pressure-amplified common rail system for commercial vehicles

  • Rolf Leonhard
  • Marcus Parche
  • Carlos Alvarez-Avila
  • Jost Krauß
  • Bernd Rosenau
Development Injection
  • 154 Downloads

Abstract

The key to a successful layout of a combustion system for commercial vehicles is in the management of peak torque operation points. For this purpose, Bosch has enhanced its Common Rail System with increasing degrees of freedom — i.e. with flexible rate shaping. A second solenoid valve activates a pressure-amplifier inside the injector, an optimized offset of nozzle needle timing reduces the injection rate by half right at the start of injection, and the formation of nitrogen oxide is reduced considerably. This enables the engine manufacturer to adhere to the emission limits while further reducing fuel consumption and the engine-related effort for the air sytem.

Keywords

Solenoid Valve Commercial Vehicle Common Rail Noise Emission Rail Pressure 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Schmid, W.; Heil, B.; Harr, T.; Maderthaner, K.: Combustion Process for the New Generation of DaimlerChrysler Heavy Duty Diesel Engines and Requirements to Fuel Injection Systems. 28. Internationales Wiener MotorensymposiumGoogle Scholar
  2. [2]
    Albrecht, W.; Dohle, U.; Gombert, R.; Krauss, J.; Leonhard, R.; Wannenwetsch, P.: Das innovative Bosch Common Rail System CRSN4.2 für die neue Generation von schweren DaimlerChrysler Nutzfahrzeug — Dieselmotoren. 28. Internationales Wiener MotorensymposiumGoogle Scholar
  3. [3]
    Dohle, U.; Dürnholz, M.; Kampmann, S.; Hammer, J.; Hinrichsen, C.: 4th Generation Diesel Common Rail System for Future Emissions Legislations. FISITA World Automotive Congress, Barcelona, 2004Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2009

Authors and Affiliations

  • Rolf Leonhard
    • 1
  • Marcus Parche
    • 1
  • Carlos Alvarez-Avila
    • 1
  • Jost Krauß
    • 1
  • Bernd Rosenau
    • 1
  1. 1.Robert Bosch Diesel SystemsStuttgartGermany

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