Ethanol has been used in Brazil as a passenger vehicle fuel since 1979. Until the year 2000, vehicles were made to run exclusively with either gasoline or ethanol. The MultiFuel® engine control module (ECM) was developed allowing vehicles to use fuels with any ethanol percentage, relying only on the existing oxygen sensor as opposed to an add-on ethanol sensor for the percent ethanol evaluation. The use of tank fuel level information allowed for far more robust ethanol percent detection and improved driveability. Four years later, compressed natural gas (CNG) capability was integrated into the MultiFuel® technology. Prior to that, vehicles using CNG normally required a second ECM; however, the performance wasn't always optimal. The MultiFuel® integrated with CNG capability is known as the Tri-Fuel system. It uses only one ECM, seamlessly controlling both liquid (ethanol blends and gasoline) and CNG fuels with little power loss, and excellent driveability and fuel consumption. This paper will present both the MultiFuel® and Tri-Fuel technologies.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Engine Manangement for Flex Fuel plus Compressed Natural Gas Vehicles


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Powertrain & Fluid Systems Conference & Exhibition ; 2005



    Publication date :

    2005-10-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Engine management for flex fuel plus compressed natural gas vehicles

    Volpato,O. / Theunissen,F. / Mazara,R. et al. | Automotive engineering | 2005


    Engine management for Flex Fuel plus compressed natural gas vehicles

    Volpato, O. / Theunissen, F. / Mazara, R. et al. | British Library Conference Proceedings | 2007


    Engine Control Module for Flex Fuel plus Compressed Natural Gas Vehicles

    Volpato, O. / Theunissen, F. / Mazara, R. et al. | British Library Conference Proceedings | 2005


    Engine Management for MultiFuel® plus Compressed Natural Gas Vehicles

    Theunissen, Frans / Volpato, Orlando / Mazara, Ronaldo | SAE Technical Papers | 2005