Abstract
Shortage of fossil fuel and stringent emission regulations require less pollutant emissions and better fuel conversion efficiency from modern internal combustion (IC) engines. Butanol is of particular interest as a renewable biofuel for advanced compression ignition (CI) engines, which has been receiving widely researches consequently. In order to more comprehensively evaluate the application of butanol on modern CI engine, exploration strategy was focused on the combining of EGR and combustion phasing control to achieve ultra-low NOx and smoke emission without penalty on fuel economy. Experiment was conducted under constant engine speed and both the high and low engine load conditions with three volume fractions of butanol up to 30%. Results indicate that butanol blending causes extended ignition delay, increased premixed combustion ratio (PCR) and retarded combustion phasing, which is more significant at low load condition. Butanol/diesel blends can dramatically reduce exhaust smoke and particle emissions without increasing NOx emissions at, however, the expense of lower thermal efficiency than that of pure diesel. Reduced thermal efficiency can be recovered by properly matching EGR and combustion phasing under a low level of overall emission.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.