The paper presents the results of modelling thermal cycle of internal combustion engine including exhaust gas recirculation. The test engine can not achieve the optimum parameters of work due to occurrence of the knock combustion. The influence of EGR on the limits of the knock occurrence in the engine was studied. It turned out that few percent of exhaust gases in the fresh charge effectively ...

In order to lower the Nitrogen Oxides (NOx) concentration in internal combustion engine emissions and to improve performance, Exhaust Gas Recirculation (EGR) and Scavenging mechanism are introduced. EGR recirculates a fraction of the exhaust gas back into the cylinders, thus diluting the intake air. This lowers the maximum combustion temperature and, since the formation of NOx is heavily depend...

BY AUTOMATIC FDI DESIGN Mattias Nyberg ISY, Link oping University, S-581 83 Link oping, Sweden. Fax: +46-13-282035, e-mail:[email protected] Abstract: Because of environmentally based legislative regulations, diagnosis of automotive engines has become increasingly important. In the design of diagnosis systems, it is important to strive for optimum performance and at the same time, minimize the...

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In this work, number concentration and size distribution at the exhaust of a Port Fuel Injection (PFI) Spark Ignition (SI) engine downstream a three-way catalyst and a Direct Injection Common Rail Diesel engine have been measured with two particle size instruments. The gas exhaust is first diluted, a nano DMA is used to obtain the particles size distribution function in the 3-60 nm range, in pa...

TM1 3 : l O Problems in Event Based Engine Control Elbert Hendricks', Michael Jensen", Alain Chevalier* and Thomas Vesterholm' *Institute of Automatic Control Systems Laboratory for Energetics The Technical University of Denmark DK-2800 Lyngby, Denmark e-mail [email protected] ** Physically a four cycle spark ignition engine operates on the basis of four engine processes or events: intake, compressi...