Fluidic torque transfer device

A fluidic torque transfer device, comprising:

• a pump impeller that includes a pump shell, a pump blade attached to the pump shell, and a pump core attached to the pump blade;
• a turbine runner that includes a turbine shell, at least first and second turbine blades attached to the turbine shell along respective first and second outer contour lines, and a turbine core attached to the turbine blades and
• a stator that includes a stator blade, and rectifies a flow of a hydraulic fluid from the turbine runner to the pump impeller, wherein
• an attachment angle of the turbine blades at a fluid outlet of the turbine runner is smaller than the attachment angle of the turbine blades at a fluid inlet of the turbine runner the attachment angle being defined as an average of (a) an absolute value of an angle of an endpoint of the first turbine blade with respect to a perpendicular in a y-direction, and (b) an angle formed by a tangent to a point of contact between the adjacent second turbine blade and an inscribed circle with respect to the perpendicular in the y-direction when the inscribed circle contacting the first turbine blade outer contour line adjacent to the first turbine blade endpoint is drawn,
• a radius of an inscribed circle that is inscribed at the fluid outlet of the turbine runner on an outer contour line of the turbine blade on the turbine shell side and an inner contour line of the turbine blade on the turbine core side is larger than a radius of an inscribed circle that is inscribed at the fluid inlet of the turbine runner on the outer contour line and the inner contour line, and
• the outer contour line of the turbine blade extends outward in an extending direction of a rotation center axis of the pump impeller and the turbine runner on the fluid outlet side of the turbine runner more than an outer contour line of the pump blade on the pump shell side.