Abstract
The flow conditions through suction and exhaust valves is one of very important problems in Diesel engines, that is not only effective on the supercharging action and the engine power but also on the contamination and durability of these valves.
Using computer, we have introduced a new analytical method to obtain the flow pattern of stream line through suction or exhaust valves, in case of giving the distribution of line of source density on these bodies' surfaces, with assumption of the normal velocity on every surface being zero and also the velocity and pressure at the upper flow satisfactorily apart from the valve parts are given.
For an example, we have calculated and plotted the flow pattern by computer method in case of a suction valve with the lift of 20 mm.
As the experimental investigation of the flow, we have done visualization tests of gas flow through the suction valve using a stream line wind tunnel and these two results obtained the analytical and experimental methods, coincide with each other satisfactorily.
