Parabolic obstructor throttle valve, variant A

grabcad

This is an older model of mine, from October of 2014. It's a concept for a parabolic obstructor funnel throttle valve for use with internal combustion engines in regulating the inflow of air or fuel-air mixture into the engine or individual combustion chambers inside the engine. This valve design is of a completely different approach from the type of valve currently most widely used for this purpose, which is the butterfly type throttle valve. The basic objective is, however, the same as with the butterfly type throttle valve: the employment of a movable or adjustable component within a housing – the valve body – which serves as an obstruction of varying degree to the flow of gas or other fluids or fuel-air mixture through the valve housing and whose degree of obstruction to this flow may be controlled by means of adjusting its position relative to the valve body through a limited range of motion. However, this design differs from the butterfly valve design through that instead of a circular plate being used as a variable obstruction (whose degree of obstruction to flow is varied by swivelling the plate around a central axis) a parabolic profile cone (possibly with a conical tip) is employed instead. And rather than rotating a circular plate around its median axis within a tubular housing, the degree of obstruction is instead varied by displacing the cone linearly along its longitudinal axis, advancing and retracting it from the funnel which constitutes the valve's outlet. A mainly parabolic profile of the shape of the conical plugging element means that its cross-sectional area varies linearly along its length, allowing for a smooth, predictable increase and decrease of the degree of obstruction it poses to the flow of gas through the valve as it is inserted or withdrawn from the valve's funnel neck section. A conical tip tangential to the main, parabolic profile of the plug enables a linear transition of the rate of increase of its cross-sectional area from 0 to the fixed rate that is constant over the parabolic, main section of its profile. The valve's main chamber and central housing is of a toroidal shape open on the inside (missing the lower, inside quarter of its tubular cross-section, as it were) which extends below into the valve's funnel shaped outlet and above into a downward recess which ends in a cylindrical collar that extends back upwards around the circular orifice which enables the plugging element to slide into and outside of the valve body. The inlet to the valve is tangential to the valve's toroidal section, offset laterally from the center of the body of the valve where the outlet funnel extends downwards from and 90 degrees deviated from being parallel to the valve's outlet. The toroidal section of the valve surrounds the plug and seamlessly connects to the funnel shaped outlet on the side opposite of the valve to where the plug protrudes into the valve through. The means of actuation of the valve (insertion or extraction of the obstruction element) constitutes an implementation detail unrelated to the valve's essential design or means of operation. Actuation can be hydraulic or by means of a solenoid or stepper motor which rotates a screw clockwise or counter-clockwise to achieve insertion or extraction of the plugging element from the valve body. The envisaged advantages of this design over a regular butterfly intake valve are less disturbance induced to the flow of gas, air-fuel mixture or other fluids across the valve and lower pumping losses. This is an entirely unproven and untested, purely conceptual work. Included a .7z archive file with the model in the .obj format as well, as the model is quite large (two .obj files - one for the throttle body and one for the throttle obstructing pieces - totalling approximately 727 MB in size). You may need to use PeaZIP or 7-zip to extract the contents of the archive file.