Research at West Virginia University has led to the development of a novel crankless reciprocating internal combustion engine. This paper presents a time-based model used to investigate the performance of two-stroke direct injection compression ignition linear engines. The two-stroke linear engine consists of two pistons, linked by a connecting rod, that are allowed to move freely in response to changes in the engine's fueling and load across the full operating cycle of the engine. The computer model uses a combination of a series of dynamic and thermodynamic numerical equations, which have been solved to provide a detailed analysis of the two-stroke direct injection linear engine operation. Parameters such as rate of combustion, convection heat transferred inside the cylinders, friction forces, external loads, acceleration, velocity profile, compression ratio, and in-cylinder pressures were modeled. A detailed study was employed to predict the two-stroke direct injection linear engine behavior over a wide operating range, given intake parameters, variation in fuel to air ratio, reciprocating assembly mass, friction load, injection timing, and bore to stroke dimensions as some of the parameters used in the study. It was found that the operating frequency was relatively insensitive to reciprocating mass: for example, with other control variable fixed, a change in mass from 2kg to 7kg reduced frequency from 73Hz to 48Hz. Operating efficiency is also insensitive to most parameters, changing only 0.8% over a range of operating frequencies from 56Hz to 73Hz.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical Simulation for Parametric Study of a Two-Stroke Direct Injection Linear Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Spring Fuels & Lubricants Meeting & Exhibition ; 2002



    Publication date :

    2002-05-06




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Numerical simulation for parametric study of a two-stroke direct injection linear engine

    Shoukry,E. / Taylor,S. / Clark,N. et al. | Automotive engineering | 2002


    Numerical Simulation of a Two-Stroke Linear Engine-Alternator Combination

    Atkinson, C. M. / Petreanu, S. / Clark, N. N. et al. | British Library Conference Proceedings | 1999


    Fiat two stroke direct injection gasoline engine

    Mastrangelo,G. / Stroppiana,B. / Sistema Ricerca Fiat nel Mezzogiorno,ELASIS,IT et al. | Automotive engineering | 1995


    Numerical simulation of a two-stroke linear engine-alternator combination

    Atkinson,C.M. / Petreanu,S. / Clark,N.N. et al. | Automotive engineering | 1999


    Numerical Simulation of a Two-Stroke Linear Engine-Alternator Combination

    Atkinson, Christopher M. / Clark, Nigel N. / Famouri, Parviz et al. | SAE Technical Papers | 1999