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Iveco has started production of new advanced diesel engine Cursor 8 in 1998. In 1999 this was followed with the new Cursor 10 engine which reaches a maximum power of 316 kW with a displacement of 10,3 dm3 and continuous the strategy of developing high BMEP engines which Iveco began more than 10 years ago. This approach shows the benefits of reduced noise, weight and fuel consumption in trucks in comparison to engines having a larger cylinder capacity with the same power. Together with the engine, Iveco introduces an electronic control system with full authority on every operating condition, realising a true drive-by-wire mode of truck operation. The control of fuelling, boosting, braking and cold starting gives the driver full comfort and guarantees that the engine produces optimum performance under every circumstance. An advanced diagnostic system warns about deviations from acceptable operating conditions or fault occurrences.

The small, high speed turbocharged IVECO 8140.21 diesel engine with direct injection has been produced in large numbers since 1985. DI engines as used in small transporters performed very well and a reduction in fuel consumption between 15-20 % relative to the IDI engines have been realised and the fuel saving compared to gasoline engines are in the region of 30 to 40 %. In the meantime, European countries have announced emission standards for such vehicles. For example, Switzerland has issued severe emission standards for light duty vehicles with a gross vehicle weigth below 3500 kg that are to be enforced by October 1990, which cannot be achieved without the availability of a fully developed particulates filter technology. In this paper, the state of development of a small high speed diesel engine with regard to emissions is presented. Achievements with improved combustion systems and techniques to assist the optimisation of the combustion process are described.