Diesel fuel injection systems from Bosch help assist diesel powered vehicles cleaner and more economical thanks to Bosch’s efficient use of high pressures to inject precisely-metered amount of fuel at the correct time helping to lower-pollutant. More and more demands are being made on the diesel engine’s injection system as a result of the severe regulations governing exhaust and noise emissions, and the demand for lower fuel-consumption. Basically speaking, depending on the particular diesel combustion process (direct or indirect injection), in order to ensure efficient air/fuel mixture formation, the injection system must inject the fuel into the combustion chamber at a pressure between 350 and 2,050 bar, and the injected fuel quantity must be metered with extreme accuracy. With the diesel engine, load and speed control must take place using the injected fuel quantity without intake-air throttling taking place. The mechanical (flyweight) governing principle for diesel injection systems is in creasingly being superseded by the Electronic Diesel Control (EDC). In the passenger-car and commercial-vehicle sector, new diesel fuel-injection systems are all EDC-controlled. According to the latest state-of-the-art, it is mainly the high-pressure injection systems listed below which are used for motor-vehicle diesel engines.