Common rail systems (with indirect activation of injector needle) offer high levels of flexibility for the adjustment at the start of fuel injection and the form of the injection characteristics.
• Central piston pump connected to a fuel injection value by an accumulator
• Administering quantities using valves which can be activated electronically at the nozzle itself
• Drive of high pressure delivery pump (not at a synchronous angle to engine)
• Indirect needle activation
Six and eight-cylinder engines with high cubic capacities do not, however, require such a high specific performance. On the other hand, the high requirement for adjustment areas at injection start due to the length of the lines can only be covered partially, if at all. In addition, greater importance is now being placed on the form of injection characteristics because of growing demands for comfort.
