Function: The knock sensor is used to detect knocking condition.

Description
Function: The knock sensor is used to detect knocking condition. In the ECU a knock signal is filtered and analyzed out of the noise spectrum.

Principle: For this purpose a piezo-effect acceleration pick up is used. The body born noise signal from the engine block is transferred to a piezo ceramic ring disc. The disc surface produces a corresponding alternating voltage, which is transferred to the ECU via a shield wire.

Remarks
Knock sensor TAA with ROBERT BOSCH in Germany
Operating temperature: -40° C ~ 130° C
Storage temperature: -40° C ~ 140° C

Specification
Sensitivity output voltage at 5kHz: 28± 8mV/g
Sensitivity output voltage in frequency 3~15kHz: 28± 10mV/g
Capacitance: 0.8 ~1.6nF (Including the connector cable)
Resistance: 4.87 ± 10% M