Performance and emissions of an automotive diesel engine using a tire pyrolysis liquid blend

Juan Daniel Martínez, José Rodríguez-Fernández, Jesús Sánchez-Valdepeñas, Ramón Murillo, Tomás García

    Research output: Contribution to journalArticle in an indexed scientific journalpeer-review

    90 Scopus citations


    A tire pyrolysis liquid (TPL) fuel produced in a continuous auger reactor on pilot scale was blended at 5 vol.% (5TPL) with commercial diesel fuel (100D) and tested in a 4-cylinder, 4-stroke, turbocharged, intercooled, 2.0 L Nissan diesel automotive engine (model M1D) with common-rail injection system. The engine performance and exhaust emissions were obtained for both the 5TPL blend and the commercial diesel fuel. Experiments were conducted in four operating modes that simulate the New European Driving Cycle (NEDC). Both brake specific fuel consumption and brake thermal efficiency seemed to be deteriorated by the composition and the properties of the TPL blend at low engine load, while at higher engine load the values of these parameters were almost equal for both fuels. Total hydrocarbon (THC) emissions followed the same pattern than that of the specific fuel consumption since they were higher for 5TPL at low engine load but similar for both fuels when the engine load increased. NOx emissions were higher for 5TPL than those for 100D in three operating modes (U10, EU8 and EU16), while no significant differences were found in the other mode (U9). In addition, 5TPL led to higher smoke opacity respect to those found for 100D in all operating modes. Combustion duration was slightly longer for 5TPL than 100D. This work could be considered as a contribution for strengthening and encouraging the waste tire pyrolysis for the production of liquid fuels which could be used in automotive engines in very limited concentrations.

    Original languageEnglish
    Pages (from-to)490-499
    Number of pages10
    StatePublished - 2014

    Bibliographical note

    Funding Information:
    This study has been carried out under the framework of the PET2008-0103 Project financed by the Spanish Ministry of Science and Innovation. Authors also wish to thank the CAI’s Europa program (Caja de Ahorros de la Inmaculada de Aragón). Juan Daniel Martínez acknowledges to Fundación Carolina for the fellowship as well as the Enlaza-Mundos Program. Junta de Comunidades de Castilla-La Mancha (Spain) is gratefully acknowledged for their financial support in the research COMBALT2 (ref. POII10-0173-0731).


    • Diesel engine
    • Emissions
    • Tire fuel
    • Tire pyrolysis liquid
    • Waste tire pyrolysis


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