The estimation of the loading for nozzle’s guiding precision interface from diesel’s fuel injector by means of CFD-modeling

V. Е. Lazarev, G. В. Lomakin, E. А. Lazarev

Abstract


The analysis of moving the fuel’s fluid stream into hydraulic tract of cylindrical guiding precision interface of the nozzle from diesel’s fuel injector is performed in application to different models of fluid dynamic (CFD). The distribution of the pressures and velocities of fuel in the interface, values of the radial force and problems of the increasing the service life of the guiding precision interface are considered and estimated by means of modeling for high (up to 120 MPa) values of the pressure
of fuel injection.

Keywords


the nozzle of the diesel engine’s fuel injector; guiding precision interface; pressure of fuel injection; hydrodynamic parameters of the interface

References


Fainleib B. N. Toplivnaja apparatura avtotraktornyh dizelej [Automotive Diesel Fuel Injection Equipment]. Leningrad, Mashinostroenie Publ., 1990. 362 p.

Lazarev V.E. [The influence of the temperature to radial force into nozzle’s guiding precision interface]. Polzunovsky vestnik [Polzunovskii herald]. 2007, no. 4, pp. 230–233. (in Russ.)

Lazarev V.E. J. Wloka, G. Wachtmeister, e.a. Different technical designs for the guiding “needle – nozzle” interface of a diesel engine's injector and it’s influence to injector's loading and service life. International scientific and technical conference – OeTG Symposium “Tribology in Industry and Research”, 24th of November, 2011, Wr. Neustadt, Austria. 2011, рp. 175–184.

Report RNP 2.2.2.3-8172 project: Modelirovanie parametrov trenija i iznashivanija precizionnyh soprjazhenij “igla – korpus” dlja povyshenija resursa razlichnyh tipov raspylitelej transportnyh dizelej [Simulation Parameters of Friction and wear of Precision Mates “Needle – Case” for Increasing Resource of Various Types of Nozzles Transport Diesel Engines]. Chelyabinsk, 2009. 70 p.


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