Modern injectors work either with an active solenoid coil or, increasingly, with a device known as a piezo actuator. Piezo actuation is significantly faster and also enables multiple injections in one combustion cycle. Through an appropriate pre-injection, a softer combustion progression can be achieved, which again reduces engine noise. Regenerative carbon particulate filter cleaning by afterburning the unburnt fuel and the carbon particulate matter which has collected in the filter is a further option.
With its competence brands Walter, Walter Titex, Walter Prototyp and Walter Multiply, Walter provides the very latest in tool technology and the necessary service modules for the efficient series production of these components.