Crankshaft Hall Sensor, Basic Function - GF07.04-P-2004A
Engine All (4xWD)
Engine All (CAR)
Overview
This document contains information on:
- General
- Function
General
The crankshaft Hall sensor contactlessly detects the increment structure (perforated plate) on the starter ring gear and forms an electrical signal (impulse pattern) based on this. The combustion engine control unit uses this signal as a basis on which to calculate the rotational speed and current angular position of the crankshaft.
Example illustration on engine M272
Function
The crankshaft Hall sensor (1) and its electronics are cast in a plastic housing with a 3-pin plug connector. The distance to the sensor rotor (2) is determined by the installation position and is approx. 0.3 to 1.3 mm. The crankshaft Hall sensor (1) scans the perforated plate with the 58 teeth and a gap of 2 teeth (60-2). Each of the 4 mm wide teeth generates a signal change at the crankshaft Hall sensor (1). The signal changes from each time from approx. 5 V (high) up to approx. 0 V (low). The rotational speed of the control unit and position of the crankshaft are calculated from the signals.
The top dead center of cylinder 1 is recognized by passing the gap with 2 missing teeth.
| Component descriptions | |||
| Component description for the crankshaft Hall sensor | Engine 176, 177, 256, 279, 656 in model 223 | GF07.04-P-6221A | |
| Engine 139, 254 in model 206 | GF07.04-P-6221C | ||
| Engine 139, 177 in model 232 | GF07.04-P-6221F | ||
| Engine 139, 254, 654, 656 in model 254 | GF07.04-P-6221H | ||
| Engine 656 in model 464 | GF07.04-P-6221J | ||
| Engine 254, 256, 654, 656 in model 214 | GF07.04-P-6221K | ||
| Engine 139, 260, 282, 608, 654 in model 118, 177, 247 as of model year 2023 |
GF07.04-P-6221L | ||
| Engine 176, 177, 256, 264, 274, 654, 656 in model 167 as of model year 2023 |
GF07.04-P-6221M |