Features Applications 6 ■ Non-contacting sensor technology ■ Gear position and shift detection ■ No aging effects using MR technology ■ Gear fork position (dual clutch transmission) 3 4 ■ Sensor can be placed outside of the gearbox ■ Clutch actuator position ■ Drive mode detection (PRND) 1 2 ■ Sensor range up to 50 mm (1D) and up to 25 mm (2D) ■ 1D and 2D measurement ■ Start/stop positional feedback 5 Gear Select s ■ Electronic calibration R ■ Neutral position detection (manual gearbox) ■ Linear and rotary option available Linear Gearbox Position Sensor Introduction Depending on the configuration of the Bourns® Linear Gearbox Position Sensor, there are several uses for the device in a modern transmission. In Dual Clutch Transmissions (DCT), the sensor may be used for detecting the clutch actuator piston position, the fork lever position, and in 2D mode for detecting both the selection and engagement of gears. One feature of the Bourns® Linear Gearbox Position Sensor for DCT applications is improved resolution which is critical for the accurate pre-selection of each gear. In manual transmissions, the sensor can be used for stop/start applications when used to sense either the clutch position or the neutral position of the gearbox. In manual shift gearboxes, the vehicle dashboard may feature a recommended gear indicator to improve fuel consumption; in this case the linear sensor can be used to detect gear position. The sensor can be placed outside of the gearbox if the housing is cast from a non-magnetic material; designs are also available to place the sensor inside the gearbox. Magnets are typically mounted on the gear lever or each gear fork and the sensor picks up the relative change in position. The sensor can measure in one or two dimensions. 2D sensing is important where both the selection (a rotary movement) and detection (a linear movement) are necessary. Typical Parameters Linear Gearbox Position Sensor - 1D Linear Sensor Total Length ................... 2 x MR + X mm Air Gap Magnet Sensor .. 5~8 mm typical Operating Temperature... -40 to +125 °C Protection Degree ..........................TBD* Linearity ...............................± 2.0 % MR Resolution ...........................< 0.1 % MR Ratiometry Error ............± 0.15 % Vdd** Temperature Drift ........ 0.5 % Vdd typical Supply Voltage .......................5 ± 0.25 V Supply Current ......................... < 30 mA Output Modes .............. Analogue, PWM Vout/Vdd [%] Diagnostic Band (High) 100.0 90.0 Clamping High * Application Specific ** Analogue mode only For higher temperature range or improved accuracy applications, please contact Bourns engineering. Clamping Low 10.0 Diagnostic Band (Low) Length MR Total Length Output : Gear select (Linear) 5 6 3 4 1 2 R Europe: Bourns Sensors GmbH Robert-Bosch-Str. 14 D-82054 Sauerlach Phone: +49 (0) 8104 646-0 Gear select The Americas: Bourns, Inc. 1660 N. Opdyke Road, Ste. 200 Auburn Hills, MI 48326-2655 USA Phone: +1 248 926-4088 Asia: Bourns, Inc. 10F, No. 146, Sung Jiang Road Taipei, Taiwan, 104 PRC Phone: +886 2 2562-4117 07/11 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. www.bourns.com [email protected]