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Ingeniare. Revista chilena de ingeniería

versión On-line ISSN 0718-3305

Resumen

ERAZO, Germán et al. Investigation of the wear of the annular cam of the high pressure pump DENSO HP3 for CRDI systems within the use of the Fourier Transform and the analysis of the performance using an ecological mixture of Diesel - surfactant as an alternative fuel. Ingeniare. Rev. chil. ing. [online]. 2021, vol.29, n.2, pp.309-323. ISSN 0718-3305.  http://dx.doi.org/10.4067/S0718-33052021000200309.

The Fourier Transform is applied in the analysis of the surface wear of the annular cam of the high-pressure pump DENSO HP3 using the ecological fuel mixture diesel - surfactant - water at 20%, which is an emulsion of two tense-active non-ionic substances during 200functioning hours at 3000 rpm with inspections performed each 50 hours. The ecological fuel reduces the emissions, enhance the thermal efficiency, torque, and power of the internal combustion motor; as it is shown in the experimental analysis, the precision balance it is detected the reduction of 0.121 grams of mass in the cam, with the digital roughness meter it is determined the roughness Ra on the frontal face of the cam, establishing a 22.23% of wear in relation with the ideal profile of experimentation, for the rear face 40.35% of wear, with the didactic module generated on Matlab for the digital image processing and the Fourier Transform compares the ideal profile and the roughness profile of the annular cam in terms of image frequency, using statistics tools such as the maximum average and the minimum o intensity. The use of the mixture of the diesel-surfactant-water fuel at 20% on the high-pressure pump HP3 generates premature wear on the cam surfaces. With the purpose of generating an investigating contribution, it is included the methodology and the technic of tests and measurements on the dynamometer for estimating the fundamental performance characteristics of the diesel internal combustion motor with this type of fuel.

Palabras clave : Roughness; fuel emulsion; CRDI; surfactants; Fourier; image processing.

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