Alternative diesel combustion processes for future emissions legislation

Project name

Alternative diesel combustion processes for future emissions legislation

Project duration

01.10.2005 - 30.09.2007

Brief description

The work plan of this joint project in cooperation with the project partner Siemens VDO Limbach/Oberfrohna includes application-oriented research into future diesel combustion processes with the aim of significantly reducing raw exhaust emissions. Future EURO 5 and EURO 6 exhaust gas emission laws regulate the diesel engine exhaust gas components particulates and nitrogen oxide to a particularly high degree. One strategy for complying with these future exhaust emission laws is to combine the exhaust aftertreatment systems particulate filter and DeNOx system. However, this leads to considerable additional procurement costs and increased fuel consumption due to the deterioration in process efficiency. Another strategy with significant emission reduction potential is to reduce the corresponding exhaust gas components within the engine. Alternative combustion processes (partially homogeneous, homogeneous) can possibly be used for this purpose, as a simultaneous reduction of the exhaust gas components particulates and nitrogen oxide can be achieved in contrast to the diesel engine combustion processes applied as standard today. The aim of the project is to make such combustion processes suitable for real driving operation. Furthermore, the plans for the new exhaust emission laws stipulate a durability of 100,000 km for all emission-relevant components. This places high demands on the long-term stability and reliability of the system components used, as it must be possible to achieve reproducible and low exhaust emissions with the new combustion processes, even with unfavorable system tolerances.
The task of the TUD Dresden University of Technology in this project is to investigate and optimize alternative combustion processes with regard to their efficiency and exhaust emissions using the measurement carriers available at the Chair of Internal Combustion Engines. The injection system components newly developed by project partner Siemens VDO Limbach/Oberfrohna during the project phase will be used for this purpose.
The overall aim of the joint project is to develop a robust alternative combustion process that can be used in vehicle operation with the corresponding injection system components that meet future emissions standards.

Cooperation partners

• Siemens VDO Automotive AG, - (Germany)

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