While other diesel injection systems generate the fuel pressure for each injection separately, the Common Rail System separates pressure generation and injection from one another. The fuel is constantly available at the pressure required for injection.
The Common Rail also contributes to reduced emissions in off-highway applications. The Modular Common Rail System MCRS now also offers all the benefits of Common Rail injection for large diesel engines. Modular system design for requirements ranging from a 4-cylinder in-line engine to a 20-cylinder V-engine is easy.
The Bosch MCRS is a Common Rail System in modular design for large diesel engines which does not require a separate rail. The fuel-storage volume is integrated in the high-pressure pump and the injectors. This minimizes hydraulic pulsation in the high-pressure system. The fuel accumulator in the injector also ensures a nearly constant pressure even during injection and maximum flexibility for multiple injections. In order to guarantee reliable operation even with fuels of low lubricity, high-pressure pumps and injectors are designed to be particularly robust. The Bosch EDC17 CV41 electronic engine control unit is suitable for installation close to the engine.
Typical applications for large high-speed diesel engines are, for instance, big construction-site and mining vehicles, yachts, fast ferries and generators as well as medium-speed large diesel engines which are typically used in locomotives. Here the MCRS technology is expected to save considerable amounts of fuel. Additional reductions in emissions and fuel consumption are possible by further increasing the pressure from the current 1,600 bar to 2,200 bar in the future.
- High injection pressure independent of engine speed
- Lower operating noise
- Reduced fuel consumption
- Adherence to stricter emission limits
- Adaption to exhaust-gas treatment
- Long lifetime