Piezoceramics in the Automotive Industry

From knock detection and parking sensors to high-precision ultrasonic measurements - piezoceramic components are at the heart of modern vehicle systems. By converting mechanical energy into electrical signals with exceptional accuracy, they enable safety-critical, efficiency-enhancing, and comfort-oriented functions that today's drivers rely on.

Piezoceramic Automotive Application Examples

Various piezoceramic products and components for the automotive sector on a white background

CeramTec develops piezoceramic materials, sensors and transducers built to perform precisely even under the most demanding conditions - combining high measurement accuracy, fast response times, and outstanding robustness. Our solutions support established automotive applications while actively driving new vehicle concepts, sustainable mobility, and autonomous driving. Explore this page to discover what piezoceramic technology makes possible today.

Also discover how piezoceramic technology will shape tomorrow: from energy-autonomous sensor systems and adaptive haptic surfaces to ultrasonic sensor cleaning and self-monitoring vehicle structures.

Close-up of a red sports car driving swiftly along the road

Future Automotive Applications

Potential Development Projects. For safe, efficient, and sustainable vehicle technologies.

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Level Sensors Automotive Industry Storage Silos Animation

Level Sensors (Oil & Fuel)

Parking Distance Control

Level Sensors (Oil and Fuel Measurement)

In fill level sensors, the piezo ceramic acts as a transmitter and receiver of ultrasonic waves. It first generates a high-frequency pulse (1–3 MHz) that travels through the liquid and is reflected at its surface. The reflected wave returns to the sensor, which generates an electrical signal from it.

The transit time measurement provides a precise reading of the current fill level – completely wear-free and suitable for on-board diagnostics. This technology replaces traditional dipsticks with a digital, modern solution.

Advantages

Precise measurement without mechanical components
High temperature and vibration stability
Ideal for modern engine and system diagnostics

Wheel Balancers

A piezoceramic sensor converts dynamic pressure fluctuations generated by a seismic mass into electrical signals. CeramTec can provide the full sensor assembly. These signals enable fast and precise evaluation of wheel imbalance – essential for works, OEMs and tire manufacturers.

Advantages

Detection of even the smallest imbalances
Extremely high signal quality
Fast measurement cycles for efficient processes

Knock Sensors

The piezoceramic ring in the knock sensor detects engine vibrations in the relevant frequency range. During knocking combustion, the seismic mass generates a characteristic force on the ceramic, which produces a clear electrical signal.

The engine control unit can then immediately adjust the ignition map, to protect the engine, and reduce fuel consumption.

Advantages

Fast response time
High sensitivity to vibrations
Durable and temperature-resistant

Parking Distance Control (PDC Sensors)

The piezoceramic transducer emits a short ultrasonic pulse that is reflected by obstacles and then received again. The distance is calculated precisely using the measured transit time.