Abstract
The article concerns the possibility of using a fuel pretreatment system in modern compression ignition CI engines, the main task of which is the reduction of toxic emissions in the form of exhaust gases. This fuel pretreatment system consists of a catalytic reactor used in common rail (CR), and a modified fuel atomizer into spiral‒elliptical channels covered with catalytic material. In the system presented here, platinum was the catalyst. The catalyst’s task is to cause the dehydrogenation reaction of paraffin hydrocarbons contained in the fuel to create an olefin form, with the release of a free hydrogen molecule. In the literature, the methods of using catalysts in the exhaust systems of engines, or in combustion chambers, injection pumps, or fuel injectors, are known. However, the use of a catalytic reactor in the CR system in a high-pressure fuel atomizer rail is an innovative project proposed by the authors. Conditions in the high-pressure CR system are favorable for the catalyst’s operation. In addition, the spiral‒elliptical channels made on the inoperative part of the fuel atomizer needle increase the flow turbulence and contact surface for the catalyst.
Highlights
Modern engines with self-ignition are subject to environmental protection concerns
The analysis showed that increasing the fuel temperature causes cavitation to increase, which causes a larger angle of opening, penetration, and dispersion of the stream
Theofaim the of analysis was to investigate how the fuel moves in a standard and modified fuel atomizer, and howand the analysis was to investigate how the fuel moves in a standard and modified fuel atomizer, the how temperature distributes during the flow
Summary
Modern engines with self-ignition are subject to environmental protection concerns. This paper proposes an innovative design for a fuel pretreatment system in the common rail (CR). The purpose of the changes to the fuel supply system proposed by the authors is to improve the combustion process and reduce the emission of toxic substances in the exhaust gas in a modern. CI engine by using spiral-elliptical channels made on a nonworking part of the fuel atomizer needle. The use of a fuel pretreatment system in the form of a catalytic reactor in a CR high-pressure accumulator and spiral-elliptical channels made on a nonworking needle covered by a platinum catalyst is an innovative concept proposed by the authors. Earlier research conducted by the authors [1]
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