The knock sensor VAZ-2110. Description and replacement

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2019-11-16 15:00:07

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The knock Sensor VAZ-2110 can be safely attributed to the category of the most reliable elements in the entire car. Despite its small size, it performs a very important function, giving the controller readings about current detonation knocks in the engine. Based on the data gathered last performs a correction of ignition timing for repayment of detonation.

knock sensor 2110Resonant knock sensor VAZ-2110

This type of mechanisms is of the type piezoelectric. It is located on the power unit. In case of engine detonation explosions sensor produces an AC signal whose amplitude and frequency depend directly on the level of the incident detonation. Input knock sensor reference voltage is applied from the controller a value of 5V. Inside the measuring element is a resistor with a resistance 330-450 Ohms, which lowers the value of the input voltage to 2.5 V. If the detonation does not occur (in normal operation of the power unit), then the output voltage remains at 2.5 V. otherwise, the sensor produces an AC signal supplied to the controller via the reference circuit at 5V. The thing is that the input signal is a DC voltage in the time, as the opposite – AC. The amplitude and frequency coming from the sensor signal depends on the level of detonation of the explosions in the car engine. The data, the controller reads and on their basis performs a correction of ignition timing to extinguish the detonation.

open knock sensor 2110Broadband knock sensor, VAZ-2110

The same as resonance, this type of mechanism is of the type piezoelectric and is located directly on the engine itself. When operating the power unit, the sensor produces a signal in the form of AC voltage, the magnitude of the amplitude and frequency of which depend on similar indicators of engine vibration. If in the power unit there is a detonation, the amplitude of vibrations of a specific frequency is increased, thereby increasing the amplitude of the output from the sensor signal. It goes to the controller, which, based on the data, makes adjustments to the ignition timing, thereby aligning the engine.

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As mentioned earlier, this mechanism quite reliable. So if you have any suspicions on his wrong operation, you must first check the open circuit knock sensor VAZ-2110. I.e. to examine the contacts and wires for integrity. Chances are that the reason is incorrect work lies precisely here. If the inspection did not reveal any faults, it remains only to replace the mechanism on a new one. Otherwise, the engine will continue to run unstable. Perhaps increased fuel consumption by VAZ-2110.

VAZ 2110 replacement knock sensorReplace knock sensor

  1. The First step is to de-energize the system. To do this, simply disconnect the cable from the negative terminal of the battery.
  2. Next you should disconnect pad wires from the contacts of the sensor.
  3. For removal of mechanism is necessary to Unscrew the nut.
  4. Install the knock sensor VAZ-2110 in reverse order.


Article in other languages:

AR: https://tostpost.com/ar/cars/19915-vaz-2110.html

BE: https://tostpost.com/be/a-tamab-l/37636-datchyk-detanacy-vaz-2110-ap-sanne-zamena.html

DE: https://tostpost.com/de/autos/37245-klopfsensor-vaz-2110-beschreibung-und-austausch.html

ES: https://tostpost.com/es/coches/37012-el-sensor-de-detonaci-n-vaz-2110-descripci-n-y-sustituci-n-de.html

HI: https://tostpost.com/hi/cars/21599-2110.html

JA: https://tostpost.com/ja/cars/19546-vaz-2110-description.html

KK: https://tostpost.com/kk/avtomobil-der/37981-datchik-detonaciya-vaz-2110-sipattamasy-zh-ne-auystyru.html

PL: https://tostpost.com/pl/samochody/39472-czujnik-spalania-stukowego-vaz-2110-opis-i-wymiana.html

PT: https://tostpost.com/pt/carros/39132-sensor-de-detona-o-vaz-2110-descri-o-e-substitui-o.html

TR: https://tostpost.com/tr/arabalar/34478-vuruntu-sens-r-vaz-2110-a-klama-ve-de-i-tirme.html

UK: https://tostpost.com/uk/avtomob-l/38367-datchik-detonac-vaz-2110-opis-zam-na.html

ZH: https://tostpost.com/zh/cars/21114-vaz-2110.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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