NGK KNE57-92013 Knock Sensor 92013

【NGK KNE57-92013 Knock Sensor 92013 O2】
■ Product Description
Trusted quality, adopted as genuine parts by many car manufacturers
Stable performance through in-house design and manufacturing
NTK Knock Sensor, incorporating years of accumulated ceramic technology

Specifications
【What is a Knock Sensor?】
A knock sensor is a vibration sensor that detects knocking (a type of abnormal combustion) occurring in the engine and is attached to the engine's cylinder block.
When the cylinder block vibrates, a weight built into the knock sensor also vibrates, and electricity is generated by the force applied to the piezoelectric element (piezoelectric ceramic). When knocking occurs, the vibration is greater than usual, so more electricity is generated.
In this way, the presence or absence of knocking is detected by monitoring the amount of electricity generated by the knock sensor with the ECU.
As engines pursue "higher output" and "improved fuel efficiency," engine designs and conditions are prone to knocking, so control systems (knock control systems) are used to detect and avoid knocking.
The knock sensor is indispensable for this control.
【Role of the Knock Sensor】
The timing for igniting the air-fuel mixture is controlled as "ignition timing." While earlier ignition timing can lead to "higher engine output" and "improved fuel efficiency," it also makes knocking more likely. Conversely, while delayed ignition timing makes knocking less likely, it reduces engine output and fuel efficiency.
A knock control system generally optimizes ignition timing while balancing engine output, fuel efficiency, and knocking. Detecting knocking is indispensable to this system, and the knock sensor plays the role of detecting vibrations caused by knocking using a piezoelectric element (piezoelectric ceramic) and transmitting them as an electrical signal to the ECU.
【What happens if knocking continues?】
Knocking is a type of abnormal combustion, where abnormally high temperatures and pressures occur in the combustion chamber. It is characterized by metallic sounds like "pinging" or "rattling" and vibrations from the engine.
If knocking continues, abnormally high temperatures and pressures can damage spark plugs and the engine. Therefore, control using a knock sensor is implemented to prevent knocking from continuing.
If a knock sensor fails, the engine may be damaged without knocking being detected. In such cases, the MIL (Malfunction Indicator Lamp) typically illuminates, and a fail-safe (safety control) activates, forcibly retarding the ignition timing. While delayed ignition timing prevents knocking, it reduces engine output and fuel efficiency. Therefore, if a knock sensor fails, it should be replaced with a new one.
Compatible manufacturers: Subaru/Toyota
Genuine Part Numbers:
22060AA160
22060AA180
SU003-06707

■ Image Notes
*Images are for illustration purposes only. Includes products with different sizes and colors. Product design and specifications may change without notice. Please be aware.

■ Precautions
Always stop the engine before inspection, replacement, or adjustment.
Perform inspection and replacement according to the service manual of each automobile manufacturer.
Use the correct part number knock sensor described in this document.
It may not function properly if used in modified vehicles, etc.
Please be careful as dropping or impacting the knock sensor may cause damage such as cracks or broken connectors.
If foreign matter such as oil or mud adheres to the cylinder block surface where the knock sensor is to be installed, remove it before installing the knock sensor.
The tightening torque of the knock sensor, the mounting bolt, and the orientation of the connector should comply with the service manual of each automobile manufacturer.
Do not allow the knock sensor to touch the exhaust manifold or other hot parts.
When mating the knock sensor to the vehicle side harness, ensure that there is no water, mud, or other foreign matter inside the connectors on both the sensor side and the harness side before mating.
Depending on the condition of your vehicle, replacing only the knock sensor may not resolve the issue.
When the MIL illuminates, before replacing the knock sensor (or after replacing the knock sensor), always clear (reset) the diagnostic (self-diagnosis/OBD) error codes according to the service manual of each automobile manufacturer. Failure to clear the error codes may lead to problems such as the MIL not turning off.