| VELOSTER(FS) >2013 > G 1.6 T-GDI > Fuel System > Engine Control System > Knock Sensor (KS)>Description and Operation |
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Knocking is a phenomenon
characterized by undesirable vibration and noise and 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. When a knock occurs, the sensor produces voltage
signal. The ECM retards the ignition timing when knocking occurs. If the
knocking disappears after retarding the ignition timing, the ECM will
advance the ignition timing. This sequential control can improve engine
power, torque and fuel economy.
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