TRANSMISSION SENSING AND MEASUREMENT SYSTEM

• US 20120078537A1
• Filed: 09/29/2011
• Published: 03/29/2012
• Est. Priority Date: 09/29/2011
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies GmbH & Co. KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: INCE, Marion Jack, SCHWAB, Charles, HEIM, Jens
• Granted Patent: US 8,880,359 B2
• Time in Patent Office: Days
• US Class Current: 702/42
• CPC Class Codes: F16C 41/008 Identification means, e.g. markings, RFID-tags; Data transfer means
• CPC Class Codes: G01M 13/022 Power-transmitting couplings or clutches

Abstract

A transmission sensing and measurement system. The system provides real-time feedback of various transmission operating characteristics which enables immediate synchronized shift calibration in response to vehicle operating conditions. The system can be applied to various transmission components and positions, such as bearing, shafts, and differentials. The system is arranged in a transmission assembly. By way of a method for measuring operating characteristics of the transmission where data is collected by a sensor and transmitted, optimal operating characteristics of the transmission can be calculated.

Claims

1. A sensing and measurement system for a transmission assembly, comprising:

a bearing assembly having an outer ring, an inner ring, a plurality of roller bodies arranged between the outer ring and the inner ring, a first sensor arranged directly on one of the rings to collect data and a cable link fixed to and extending from the first sensor to transmit the collected data.

2. The sensing and measurement system of claim 1, wherein the bearing assembly is mountable in the transmission assembly on a transmission shaft having a recess.

3. The sensing and measurement system of claim 1, wherein the outer ring has a flange mountable to a transmission housing via fasteners.

4. The sensing and measurement system of claim 1, wherein the first sensor is mounted on an axial side of the inner ring or outer ring.

5. The sensing and measurement system of claim 1, wherein the first sensor is mounted on a radial surface, of the inner ring or outer ring.

6. The sensing and measurement system of claim 1, wherein the first sensor is fixed to the outer ring.

7. The sensing and measurement system of claim 1, wherein the inner ring or the outer ring is stationary and the first sensor is fixed to the stationary ring.

8. The sensing and measurement system of claim 1, further comprising a second sensor, the first sensor being mounted on the inner ring or the outer ring and the second sensor being mounted on the other of the inner ring or the outer ring.

9. The sensing and measurement system of claim 8, wherein the first sensor and the second sensor are each mounted on an axial side of the inner ring or the outer ring.

10. The sensing and measurement system of claim 8, wherein the first sensor and the second sensor are each mounted on a radial side of the inner ring or the outer ring.

11. The sensing and measurement system of claim 1, further comprising bearing supports on which the sensor is mounted.

12. The transmission assembly of claim 1, further comprising a differential having a housing, the bearing assembly being mounted directly within the housing of the differential.

13. The sensing and measurement system of claim 1, wherein the sensor is arranged so that the data includes axial loading, radial force, and transmitted torque.

14. The sensing and measurement system of claim 1, wherein the sensor is arranged so that the data is measured directly within the transmission assembly.

15. The sensing and measurement system of claim 1, wherein the cable link is operative to transmit the data collected by telemetry.

16. The sensing and measurement system of claim 1, further comprising a processor, which amplifies, filters and converts the data collected from analog to digital.

17. The sensing and measurement system of claim 16, further comprising a processor that processes the data and calculates optimal operating characteristics by an algorithm resulting in forces, moments and torques, which are transmitted on a network through a controller to the transmission assembly.

18. The sensing and measurement system of claim 1, wherein the transmission sensing and measurement system is calibrated prior to installation.

19. The sensing and measurement system of claim 1, further comprising a processor that combines the collected data with wheel and engine data of a vehicle.

20. A method for measuring operating characteristics of a transmission, the method comprising:

assembling a bearing in a housing of the transmission, the bearing having an outer ring, an inner ring, a plurality of roller bodies arranged between the outer ring and the inner ring, a sensor arranged directly on one of the rings and a cable link fixed to and extending from the sensor to transmit data collected for review, analysis and adjustment of operating characteristics;

measuring strain data on the bearing via the sensor;

amplifying, filtering, and converting the data from analog to digital;

transmitting the data collected to a transmission controller; and

processing the data and calculating optimal operating characteristics by an algorithm resulting in forces, moments, and torque, which are transmitted on a network through a controller to the transmission.