Emission reduction technology for future heave duty combustion engines

摘要

The combustion engine with the highest efficiency is the Diesel engine. This is not likely to change within the next years. However it will be necessary to further reduce the emissions of these engines Improved combustion and aftertreatment of the exhaust gases are possibilities to achieve this. if extremely low emissions are required, for example for public transportation buses in large cities, it may be an advantage to use CNG or LPG engines. It is the intension of this paper to show the development potential of these engines and to compare their characteristics. The experience with the first Hydrogen City Bus in operation will also be demonstrated.