Electronic vehicular transmission including a sensor and coupling and control assembly for use therein

A coupling and control assembly comprising:

• a controllable coupling assembly including first and second coupling members mounted for rotation relative to one another about a rotational axis, the first coupling member having a first coupling face oriented to face axially in a first direction with respect to the axis and the second coupling member having a second coupling face oriented to face axially in a second direction opposite the first direction with respect to the axis, the second coupling member having a third coupling face oriented to face radially with respect to the axis and having a set of locking formations;
• and
• an electromechanical component including a locking element and a sensor, the component being positioned relative to the second coupling member so that both the locking member and the sensor are in close-spaced opposition to the third coupling face of the second coupling member, the locking element being movable across a gap towards the third coupling face to a coupling position in response to the component receiving an electrical control signal, the locking element abuttingly engaging one of the ferromagnetic or magnetic locking formations to prevent rotation of second coupling member in one direction about the axis in the coupling position, the sensor sensing magnetic flux to produce an electrical output signal indicative of a speed of rotation of the second coupling member wherein a variable magnetic field is generated in response to rotation of the set of ferromagnetic or magnetic locking formations past the sensor.