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Combustion Process in Otto and Diesel Engines-Effect on Efficiency, Power Output and Exhaust Emission
Published January 01, 1986 by Yugoslavia Society of Automotive Engineer in Serbia
The classical differences between Otto and Diesel engines - a high specific power output with the Otto powerplant and low part-load fuel consumption with its Diesel counterpart - are still existing today. When analysing the reasons für the different performances of both engine types, two influencing factors are found to be of particular importance: the type of fuel used and the combustion process.
By corresponding changes of the combustion chamber design and by providing for direct injection, the Otto engine combustion process can be controlled in such a way that its combustion law approaches that of the Diesel engine.
The conformation of the combustion laws results in similar characteristics throughout a wide load range.