Crankshaft position sensing system

摘要

Disclosed is a crankshaft position sensing system 101 for an internal combustion engine. The crankshaft position sensing system comprises a trigger wheel 103 and a position sensor 105 configured to detect the angular position of the trigger wheel 103. The position sensor 105 extends through an opening 121 in a wall 111 of a casing of the engine. The position sensor 105 has a body portion 123 and a sensor portion 125. The sensor portion 125 is located at a distal end of the body portion 123, the body portion distal end being adjacent to the trigger wheel 103 in an installed configuration. The body portion 123 has a longitudinal axis 117 that is inclined to a radial plane of the trigger wheel 103 when in the installed configuration. The trigger wheel 103 may be in the form of a toothed wheel or cog. The particular arrangement of the sensor enables a compact arrangement of the crankshaft, trigger wheel and sensor within the engine casing.