| 摘要 |
The method involves subjecting the object or an opposing relative motion partner, e.g. the piston (3) rings (31) and cylinder liner (23) surfaces, to ultrasonic signals from an ultrasonic transducer (5) mounted in the cylinder and using the echo signals reflected from the object to determine its state. An Independent claim is also included for an arrangement for determining the state of an opposing relative motion partner in an internal combustion engine cylinder. |
