Reduction in CO2 emissions from diesel engine combustion processes with simultaneous reduction in limited pollutants for 2014

Project name

Reduction of CO2 emissions from diesel engine combustion processes with simultaneous reduction of limited pollutants for the year 2014

Project duration

01.11.2007 - 31.10.2010

Brief description

As the voluntary commitment by European vehicle manufacturers to reduce fleet fuel consumption to 120 g of carbon dioxide (CO2) per km by 2014 will probably not be met, it can be assumed that, against the background of the current debate on CO2 and climate change, the legislator will also issue regulations to reduce the consumption of motor vehicles in addition to the previously required emission reductions. This is tantamount to a reduction in CO2 emissions. In order to achieve such a limitation of fleet fuel consumption in an economically viable way, it will also be necessary in future to equip small and medium-sized cars with diesel engines. However, the CO2 advantage of the diesel engine can only be exploited economically in these vehicle classes if cost-intensive exhaust aftertreatment systems can be avoided or minimized by suitable internal engine measures to reduce emissions and fuel consumption. Furthermore, in many cases the seemingly simple solution of exhaust gas aftertreatment has a negative effect on fuel consumption due to the increase in exhaust back pressure. The new task of reducing fuel consumption (= CO2 reduction), while at the same time meeting the even stricter pollutant limits, results in completely new requirements for future combustion processes, because in many cases the two requirements of minimizing pollutants and reducing fuel consumption contradict each other.
The overall aim of the research project is to define injection systems and processes for energy-efficient and low-emission combustion processes. This will offer automobile and engine manufacturers a product with which they can meet the requirements of future exhaust and consumption limits (CO2 emissions). The market share of piezo common rail injection systems from Siemens VDO can thus be further expanded. Conventional exhaust gas analysis techniques on a single-cylinder real engine are available to optimize the combustion processes used. In addition, investigations must be carried out on special test vehicles, an optically accessible high-pressure chamber and a transparent engine, using modern optical measuring techniques. The totality of the results of conventional and state-of-the-art investigation possibilities at the Chair of Internal Combustion Engines at TU Dresden in conjunction with the project partner Siemens VDO in Limbach/Oberfrohna will make a decisive contribution to validating the combustion processes used with regard to possible series application.

Cooperation partners

• Siemens VDO Automotive AG, - (Germany)

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