Sensor Wheel Layout for Fast, Precise Engine Angle Detection

The encoder wheel implements local quality by assigning different circumferential extensions to different indicator elements based on their angular positions. Specifically, indicator elements are configured with first, second, or third circumferential extensions depending on whether they are located between specific reference marks (e.g., between first and second reference marks, between second and third reference marks, etc.). This non-uniform local configuration enables the sensor to distinguish absolute angular positions more precisely while maintaining a relatively simple overall wheel structure.

The encoder wheel applies preliminary action by pre-configuring the indicator elements with specific circumferential extensions at predetermined angular positions before the engine operates. The indicator elements are arranged such that their extensions correspond to specific angular intervals defined by reference marks on the camshaft. This pre-arranged configuration allows the sensor to immediately determine absolute angular position upon startup without requiring warm-up or calibration periods, thereby achieving rapid startup while maintaining structural simplicity.

The encoder wheel applies segmentation by dividing the camshaft rotation into distinct angular intervals defined by reference marks, with each interval assigned a specific indicator element extension type (first, second, or third extension). This segmentation approach allows the manufacturing process to focus on creating discrete, well-defined extension types rather than continuously varying dimensions, thereby improving signal resolution while keeping manufacturing precision requirements manageable through standardized segment configurations.