Bosch innovations, such as Diesel Direct Injection, save you twice as much. First of all you save time. Greater fuel efficiency means less stopping to refuel. Second, you save money. Diesel cars consume around 30% less than their petrol engine counterparts. What’s more, Bosch Diesel High Tech brings you top performance with low noise emission. That’s why more and more drivers – one in every two in Western Europe – are changing to diesel. Bosch technology saves you time and money.

More information on direct diesel injection
Bosch has played a decisive role in the international diesel boom: Pioneering high pressure injection systems, including the hydraulic pump head, the Unit Injector System and the Common Rail System, have transformed sluggish diesel cars into sporty, economic and clean vehicles. Especially with the Common Rail injection system, Bosch engineers have developed technology that cuts exhaust emissions and engine noise lower than ever before.

The Bosch Common Rail System –
separate functions for optimal performance
Unlike other injection systems, Common Rail separates the pressure pump and injection from each other. This permits the engine and injection system to adapt to each other more precisely. The fuel for all cylinders is kept in a single fuel container known as a rail. It is always under high pressure, ready to inject fuel into the valves at a pressure of up to 1600 bar. The injection can be divided into several stages to achieve a perfect combustion process. This way, the right amount of fuel is always injected at precisely the right moment – for maximum performance, minimum consumption and lowest emissions.

The latest generation switches faster than any other
The 3rd generation of the Common Rail System from Bosch uses a Piezo actuator to control the injection valves, replacing the previous magnetic valves. The Piezo actuator consists of several hundred thin Piezo crystal plates that instantly expand in an electric field. It is small enough to be integrated into the injector. The Piezo actuator switches five times as fast as a magnetic valve. Its movement is directly transferred to the valve needle. That means twice the valve speed of any other system. The injected volume and injection process can therefore be controlled with even greater precision. The fuel is combusted at maximum performance and minimal emissions, while the diesel engine is even quieter, delivering reliable power.

Bosch makes diesel sporty
The first diesel engine was produced over a hundred years ago: in 1897 to be precise. The engine developed by Rudolf Diesel was more fuel efficient than any other. The first utility vehicles with diesel engines were brought to market in 1927, after Bosch had paved the way for smaller, faster running diesel engines with the first diesel injection system. Diesel engines were even on board the "Graf Zeppelin" airship. The first diesel car was the 260 D produced by Mercedes in 1936. For decades, diesel vehicles were regarded as sluggish. It was only once Bosch had introduced innovative diesel injection systems that the diesel could present itself in a more attractive light. By now, its advantages have convinced one in two drivers in western Europe.