Ford > Engine > Spark Control > Knock Sensors

Knock Sensors

• Knock Sensors Number Fitted: The number of Knock Sensors fitted to the engine.
• Knock Sensor Mode:

Knock Threshold

• Knock Thresh Cyl 1 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 2 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 3 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 4 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 5 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 6 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 7 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 8 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 9 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Thresh Cyl 10 vs. RPM vs. Load: This defines the detection threshold for knock. If the knock signal minus the noise floor is greater than this then knock is detected.
• Knock Sensor vs. Cyl: This table defines the knock sensor that is used for each cylinder.
• Knock Window Offset vs. RPM vs. Load: Knock detection window offset from rising edge as a function of engine speed and load.
• Knock Window Length: A constant added to the period the knock signal is active.
• Knock Window Offset: Knock detection window offset from rising edge.
• Knock Down Averagin Constant: Knock control event constant for down-averaging when not accelerating or decelerating.
• Knock Fast Mode Events: During tip in, the PCM uses a faster spark advance rate until Knock Fast Mode Transient Events knock events are detected.
• Knock Fast Mode Transient Events: The periods after you start accelerating or decelerating where fast event constants are used in knock detection. After this number of periods, normal event constants are used.
• Knock Up Averaging Constant Transient: Knock control event constant for up-averaging when accelerating and decelerating.
• Knock Up Averaging Constant: Knock control event constant for up-averaging when not accelerating or decelerating.