A REVIEW OF DEGRADATION PROCESS ON COMPRESSED NATURAL GAS AND DIESEL ENGINES LUBRICANT OILS

Authors

  • VICENTE MACIAN MARTINEZ
  • BERNARDO VICENTE TORMOS MARTINEZ
  • YESID GOMEZ
  • VICENTE BERMUDEZ TAMARIT

Keywords:

Degradación, motores de gas natural comprimido, oxidación, nitración, RUL - vida remanente del aceite, factor de estrés del aceite, Degradation, compressed natural gas engine, oxidation, nitration, RUL - remaining useful life number and oil stress factor.

Abstract

ABSTRACT In this study, a representative sample of urban buses, powered with CNG and diesel engine technologies and working on urban duty operation, have been studied in order to evaluate engine oil evolution of degradation. Main parameters evaluated have been related with oil degradation: oxidation, nitration, viscosity, Antioxidant additives depletion, antiwear, TAN, TBN and RUL Number. Results obtained have shown higher degradation rates for oils used on CNG engines than diesel engine. CNG engines studied showed a high thermal and mechanical stress, and lower oil sump volume. Experience with FT-IR technique on degradation study allowed to define optimal spectral ranges to quantify the changes of oxidation, nitration and fuel dilution problem in MCIA.

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Published

2013-01-01

Issue

Section

ARTICULOS