In the case of newer, electronically controlled trucks, a high-pressure pump (CP3, CP4, or ... (in some cases more than 30,000 psi), which is then fed to a common high-pressure fuel rail, ...

High Pressure Common Rail. Historically, diesel engines for automobiles have suffered from several disadvantages, including combustion noise, roughness, and emissions.

The Volkswagen group will switch to common-rail diesel technology when it launches a new generation of three- and four-cylinder diesel engines starting in 2007. VW is dropping its Pumpe-Duese, or ...

Diesel fuel from the injection pump enters the mechanical injector body and starts to build pressure. Once the pressure is high enough (about 4,000 psi), a check valve in the injector is lifted ...