Kia Niro: Engine Control System / Knock Sensor (KS) Description and operation

Description

Knocking is a phenomenon characterized by undesirable vibration and noise that can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.

When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element, and the sensor produces voltage signal to ECM. On receipt of this signal, ECM will control the ignition timing by retarding the ignition timing and then advancing the ignition timing when the knocking disappears. This sequential control can improve engine power, torque and fuel economy.

Knock Sensor (KS) Specifications
Specification Item Specification Capacitance (pF) 850 - 1,150 ...

Knock Sensor (KS) Schematic diagrams
Circuit Diagram Harness Connector ...

Other information:

Kia Niro (DE HEV) Owners Manual: Operation Tips
To keep dust or unpleasant fumes from entering the vehicle through the ventilation system, temporarily set the air intake control to the recirculated air position. Be sure to return the control to the fresh air position when the irritation has passed to keep fresh air in the vehicle. Thi ...

Kia Niro 2017 (DE HEV) Service Manual: General information
Basic Service Symbols There are five primary symbols used to complement illustrations. These symbols indicate the part to apply such materials during service. Symbol Meaning Do not reuse the part. Replace a new one. ...

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