Abdul Rahim Ismail  , Semin  , Rosli Abu Bakar  , 
    Valve Flow Discharge Coefficient Investigation for Intake and Exhaust Port of Four Stroke Diesel Engines,
    Journal of Engineering and Applied Sciences,
    Volume 2,Issue 12,
    2007,
    Pages 1807-1811,
    ISSN 1816-949x,
    jeasci.2007.1807.1811,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2007.1807.1811)
    Abstract: The study presents the effect of the coefficient of discharge of intake and exhaust valve for direct injection diesel engine. The main purpose of the present research is to determine the discharge coefficient of intake and exhaust valves in the engine cylinder head of a 406 cm<SUP>3</SUP>. The experiment has been conducted using a flow bench model Superflow SF-1020. It is required to know such discharge coefficients, as a function of lift and pressure ratio in the mathematical modelling process at each juncture during the open cycle. The obtained results are dependent on test pressure.
    Keywords: Coefficient of discharge;diesel engine;test pressure;valve lift