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: VSM operation
When the VSM is operating: ESC (Electronic Stability Control) () light will blink. The steering wheel may be controlled. When the vehicle stability management is operating properly, you can feel a slight pulsation in the vehicle. This is only the effect of brake control and indicates ...

Kia Niro 2017 (DE HEV) Service Manual: Cylinder Head Repair procedures
Removal Engine removal is not required for this procedure.    • Be sure to read and follow the “General Safety Information and Caution” before doing any work related with the high vol ...

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