Tamás Walter FLESCH


35-40 CERCETAREA OPACITĂȚII ȘI CONSUMULUI LA DACIA SANDERO 1.5 DCI FĂRĂ EGR

RESEARCH OF OPACITY AND CONSUMPTION AT DACIA SANDERO 1.5 DCI WITHOUT EGR

The study of pollutant emissions, especially of the Dacia Sandero 1.5 dCi passenger car at different operating regimes was developed by monitoring the fuel consumption. The introduction of the study is concerned about pollution, the environmental problem which is met every day. Pollution is about emitting in the surrounding environment chemical components which may lead to the structural imbalance between various life forms, which impacts health and comfort at all levels and causes ambient damage by altering natural and life sustaining factors. Different types of pollution do manifest continuously. First of all the air pollution from automobiles is the most important and analyzed in this study. In it is also considered the ecological design approach of most cars. Another section of the study makes a brief history of the internal combustion engines and their improvement process taking into account the pollutant emissions. Further in the study a comprehensive step is about the evolution of the chemical pollution. Last but not least is a description of the devices for measuring the pollutant emissions of cars. Another chapter enumerates and defines the filters, equipment and systems applied in engine development to meet increasingly stringent pollution standards. The study also contains the experimental part of the work. In this part is presented the measuring system used and then the results acquired from the Dacia Sandero 1.5 dCi engine, by monitoring the variation in the opacity of the exhaust smoke and the evolution of fuel consumption in different engine operating regimes. The last part of the study contains the final conclusions and proposed development perspectives.
Keywords: carbon emission, exhaust, gases, pollution, Sandero

Cuvinte cheie: emisii de carbon, eșapament, gaze, poluare, Sandero

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35-41 CERCETAREA OPACITĂȚII ȘI CONSUMULUI LA DACIA SANDERO 1.5 DCI FĂRĂ UN INJECTOR

RESEARCH OF OPACITY AND CONSUMPTION AT DACIA SANDERO 1.5 DCI WITHOUT AN INJECTOR

The study of opacity, in particular for Dacia Sandero 1.5 dCi compression ignited engine in two distinctive operating circumstances was developed by monitoring the exhaust emission and fuel flow with and without an injector failure. The first part of the research is focused on Sandero presentation and its relation with environmental pollution. The last improvements and optimizations of the car are conducted toward the increased performance and efficiency of the car’s operation. The opacity is one of the most important pollution aspects from compression ignited engines. Its effects on the environment are great and significant. It is also analyzed the ecological and dynamic design of the studied car. The present study makes a brief analyze of the available literature on the problem of emissions and consumption. The engine’s improvement and the optimization process should take into account the pollutant emissions and the real source. Last but not least there is a study of vehicle structure, of the common-rail injection system with specific devices for the pollutant emissions control on the investigated car. The paper also presents the applied or the practical part of the research work. In this part the most interesting aspect are the experimental data acquired during the practical measurements in operation, when it is managed the data package and the graphical representation of the results from Dacia Sandero 1.5 dCi engine. This was achieved by monitoring the variation of the exhaust opacity and the fuel consumption level in operating conditions. The study ends with conclusions, observations and predefined development directions.
Keywords: carbon deposits, engine, injection, opacity, pollution

Cuvinte cheie: depozite de carbon, motor, injecție, opacitate, poluare

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