Design type air engine Di Pietro

Experimental Investigation of the Effects of Air Injectionand Injection Timingin a Natural Aspirated DI Diesel Engine

In this experimental study, the effect of creating an air jet inside the combustion chamber by establishing an air-cell inside of the piston body at different injection timings in a DI diesel engine has been studied at 2000 rpm and full load operation. The performed tests include studying the Soot and NOx emissions, combustion and performance parameters. The obtained experimental results show t...

Observer Design for Torque Balancing on a DI Engine

Torque balancing for diesel engines is important to eliminate generated vibrations and to correct injected quantity disparities between cylinders. The vibration phenomenon is important at low engine speed and at idling. To estimate torque production from each cylinders, the instantaneous engine speed from the crankshaft is used. Currently, an engine speed measurement every 45° crank angle is su...

Si-engine Air-intake System Diagnosis by Automatic Fdi Design

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...

Combustion Improvement for Reducing Exhaust Emissions in DI Diesel Engine

Multidimensional modelling of open-cycle process of OM355 engine was developed. Calculations for computational mesh were carried out. The results of the model were validated by experimentally measured in-cylinder pressure and the good agreement between calculations and measurements approved the trustworthy of numerical code. Results included pressure, temperature, emission and Rate of heat rel...

On Global Virtual Data Structures Gian Pietro Picco (Politecnico di Milano, Italy),