Torque monitoring system and method of monitoring engine torque

Details Torque monitoring system and method of monitoring engine torque Torque monitoring system and method of monitoring engine torque

2008-07-01

2008-07-01

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C073S116070, C192S10500F

Reexamination Certificate

active

07392714

ABSTRACT:
An easily packaged torque monitoring system accurately captures driveline torque data for use by engine, transmission or other vehicle controllers. The torque monitoring system utilizes a structural member to hydraulically connect a driving member with a driven member. A pressure-sensing device is operatively connected with a fluid chamber in the structural member through which the driving member drives the driven member. The pressure-sensing device senses a pressure level within the chamber. The amount of torque transmitted from the driving member to the driven member is directly linearly related to the sensed pressure. In one embodiment, the pressure-sensing device is a surface acoustic wave sensor in contact with the hydraulic fluid that wirelessly relays a sensor signal (i.e., a signal with a value corresponding with sensed pressure and thus with torque) to a controller.

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