BOSCH KS4-R knock sensor 0261.231.218-U5G

Discover the BOSCH KS4-R knock sensor 0261.231.218-U5G, designed to identify structural vibrations in spark-ignition engines. It ensures precise monitoring even in harsh environments by detecting uncontrolled combustion. Its seismic mass follows engine vibrations and generates a voltage signal through a piezoceramic element, allowing the voltage thresholds corresponding to acceleration levels to be determined directly.

Its main strengths include a robust design, compact housing and highly precise noise detection. This sensor can also be customised with different cable lengths and connector options to meet each customer’s specific needs.

• Frequency: 3 to 25 kHz
• Sensor head height: 18 mm
• Protection: IP 54
• Male thread (for cast iron): M8x25
• Male thread (for aluminium): M8x30
• Tightening torque: 20 ± 5 Nm