30757381 Knock Sensor SGS Womala 2011-2018 Auto Parts S60 S80

30757381 Knock Sensor SGS Womala 2011-2018 Auto Parts S60 S80

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Detailed Description:

The function of the knock sensor is to transmit engine knock to the electronic control module in the form of an electrical signal, which serves as an important basis for the control module to adjust the ignition timing to prevent further knock. Knock sensors are generally piezoelectric ceramics. When the engine vibrates, the ceramic inside is squeezed to generate an electrical signal.

How it works: Knock sensors are AC signal generators, but they are very different from most other automotive AC signal generators. In addition to detecting the speed and position of the rotating shaft like the magnetoelectric crankshaft and camshaft position sensors, they also detect vibration. or mechanical pressure. Unlike stators and reluctors, they are typically piezoelectric devices. They are made of special materials that can sense mechanical pressure or vibration (for example, an AC voltage can be generated when an engine detonates).

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Established in Guangzhou China, Womala Autoparts as a comprehensive company with five branches has engaged in for for parts for more than 10 years. There are hundreds of professional staff working in our supply department, sales and logistic support departments. Thanks to the deep cooperation with over 50 factories including 5 joint-stock companies, we have provided a variety of reasonable product solutions and reliable market information constantly to clients around the world over the past ten years.