Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Knock Sensor: Description and Operation
If combustion knock is detected by the
Knock Sensor (KS), ignition timing, which is normally at optimum advance, may be retarded on specific cylinders.
Knock sensors use a piezo-electric sensing element to detect broad band (2 kHz to 20 kHz) engine accelerations.
Output of sensor:
Charge sensitivity
37.5 pC/g nominal
Voltage sensitivity
29 + 15 % mV/g