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

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

doi:https://doi.org/10.6036/5077

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

JANUARY 2013 - Volume: 88 - Pages: 49-58

DOI:

https://doi.org/10.6036/5077

Authors:

VICENTE MACIAN MARTINEZ -

BERNARDO VICENTE TORMOS MARTINEZ

- YESID GOMEZ - VICENTE BERMUDEZ TAMARIT

Disciplines:

Mechanical Engineering and technology (MOTORES DE COMBUSTION INTERNA )

Downloads: 221

Cites in Web of Science: 6

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Received Date : 18 May 2012

Reviewing Date : 13 December 2012

Accepted Date : 18 December 2012

Key words:: 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.
Article type:: ARTICULO DE INVESTIGACION / RESEARCH ARTICLE
Section:: RESEARCH ARTICLES

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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