This paper discusses the experimental investigation of extended expansion and thermal insulation on the performance of a diesel engine. A single cylinder naturally aspirated air-cooled diesel engine is modified to run on the concept of extended expansion (Miller cycle). In the modified engine, the expansion ratio is maintained greater than the effective compression ratio by modulating the intake valve closing time and the clearance volume. The cylinder head, valve, and the piston top are coated with partially stabilized zirconia (PSZ) for low heat rejection. Results show a significant improvement in fuel efficiency of the insulated extended expansion engine. A ratio of expansion ratio to effective compression ratio of 1.5 is found to be optimum.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Naturally Aspirated Low Heat Rejection Single Cylinder Extended Expansion (Miller Cycle) C.I. Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1997



    Publication date :

    1997-02-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Naturally aspirated low heat rejection single cylinder extended expansion ( Miller cycle ) combustion ignition engine

    Nazar,J. / Gopalakrishnan,K.V. / Mavinahally,N.S. et al. | Automotive engineering | 1997


    A Naturally Aspirated Miller Cycle Gasoline Engine - Its Capability of Emission, Power and Fuel Economy

    Sakai, Hiroshi / Sasaki, Junso / Ueda, Naoharu et al. | SAE Technical Papers | 1996


    Radiated noise reduction on a single cylinder direct injection naturally aspirated engine

    Naidu,S. / Balla,C.K. / Carlson,C. et al. | Automotive engineering | 2011


    First and Second Law Analyses of a Naturally-Aspirated, Miller Cycle, SI Engine with Late Intake Valve Closure

    Assanis, Dennis N. / Anderson, Michael K. / Filipi, Zoran | SAE Technical Papers | 1998


    Cooling system optimization for a three cylinder naturally aspirated inline diesel engine

    Kale,V. / Raju,B.D. / Dhiman,V. et al. | Automotive engineering | 2014