An Experimental Study of Flow Through a Rotating Disc Valve

It is known that the mass flow rate through poppet valves of 4-stroke cycle engines and through piston valves of 2-stroke cycle engines decrease with increase in engine speed. In this paper, a disc-type rotary valve was used to experimentally analyze the decrease in flow rate at high rotational speeds and to determine what variables, other than rotational speed, give rise to the observed behaviour. These variables have been included in an empirical equation which is representative of the measured flow characteristics.