2003 - PACE Award Winner Siemens VDO Automotive What: Piezo Common Rail Diesel Direct Injection System Judge's Citation: With Siemens’ Piezo Common Rail Diesel Direct Injection System, the company ...

However, not all innovations are equal, and nor do they follow a constant upward trend. Instead, their evolution takes the form of an S-shaped curve that reflects their typical lifecycle from early ...

The basic difference between direct injection (DI) and the port-fuel injection (PFI) systems we've become familiar with since the mid-1980s is that PFI sprays fuel into the intake manifold (behind ...