RESULTS OF CRITERIA-BASED ASSESSMENT OF EFFICIENCY OF APPLICATION OF DPF FOR DIESEL ENGINE WITH TAKING INTO ACCOUNT OF ITS HYDRAULIC RESISTANCE

Abstract

Power plants (PP) with diesel reciprocating internal combustion engines (RICE) are the powerful source of factors which characterized ecological safety (ES) level of they exploitation process. The provision of a legislative established ES level for PP with RICE exploitation process should be based on methodological bases – ESMS or ecological safety management systems, as well as the use of devices and systems for neutralization of pollutants in the exhaust gas (EG) flow. Particulate matter (PM) that containing unburned hydrocarbons of motor fuel and oil which has carcinogenic and mutagenic effect occupy the second place from the legislatively normalized pollutants in EG of diesel engines in terms of the reduced toxicity. In order to reduce the PM mass emission in the EG flow of diesel engine, particulate filters (DPF) of various designs and principles of operation are used. However, such devices are characterized by less than 100 % operational efficiency and significant hydraulic resistance (HR), which changes periodically during exploitation process. At present, no single criterion has been created for assessment of the effectiveness of ESMS, so it is possible to use the mathematical apparatus of the complex fuel-ecological criterion for prof. I.V. Parsadanov described in and improved in. In this case, the use of DPF should have an impact on the magnitude of such criterion at the same time positively – by reducing the monetary cost of compensation for environmental damage from contamination of it with legalative normalized pollutants with EG by their purification from PM; and negatively – by increasing the fuel consumption of diesel engine to overcome the extra HR in the exhaust system.