Air vortex motion in a high-speed diesel with four valves on a cylinder

It is shown that change of vortex intensity of the air flow input into the engine with four valves on a cylinder is provided by a specially designed mechanism for slewing and fixing valve with screen. This mechanism permits to increase a vortex ratio by a factor of 1.5-1.7 and to reduce it approximately by half comparing to the series-produced construction. By means of a stationary isothermic blowing through the peculiarities of vortex motion are brought out for the case of 4-valve mechanism. The separate channel influence is investigated. An integral dependence is proposed stating interconnection of different approaches to vortex ratio determination. The results and the proposed method of vortex ratio change can be used when estimating thermal boundary conditions and for improving mixture forming and combustion processes.