18192 Mercury SCREW, (.25-20 x .62)

Changing the parameters during engine operation can cause the engine to operate erratically. This can cause engine damage.Unless the instructions are different, only change the settings of the parameters when the engine is STOPPED.
Table 1
Configuration Parameters for G3600 Engines
Air/Fuel Ratio Control
"Fuel Quality Input Type Configuration"
"Fuel Quality"
"Fuel Quality Sensor LHV Lower Setpoint"
"Fuel Quality Sensor LHV Upper Setpoint"
"Gas Specific Gravity"
"Desired Engine Exhaust Port Temp"
"Maximum Choke Position"
"Engine Start Choke Position"
"Engine Start Turbo Wastegate Position"
"Wastegate (Proportional) Gain Percentage"
"Wastegate (Integral) Stability Percentage"
"Wastegate (Derivative) Compensation Percentage"
"Choke (Proportional) Gain Percentage"
"Choke (Integral) Stability Percentage"
"Choke (Derivative) Compensation Percentage"
"Ignition Multi Strike Feature Enable"
"Ignition Multi Strike Mode Configuration"
"Ignition Multi Strike Engine Startup Activation Duration"
Speed Control
"Low Idle Speed"
"Minimum Engine High Idle Speed"
"Maximum Engine High Idle Speed"
"Engine Acceleration Rate"
"Desired Speed Input Configuration"
"Governor Type Setting"
"Engine Speed Droop"
"Governor (Proportional) Gain Percentage"
"Governor (Integral) Stability Percentage"
"Governor (Derivative) Compensation Percentage"
"Governor Auxiliary 1 (Proportional) Gain Percentage"
"Governor Auxiliary 1 (Integral) Stability Percentage"
"Governor Auxiliary 1 (Derivative) Compensation Percentage"
Start/Stop Control
"Driven Equipment Delay Time"
"Crank Terminate Speed RPM"
"Engine Purge Cycle Time"
"Engine Cooldown Duration"
"Cycle Crank Time"
"Engine Overcrank Time"
"Engine Speed Drop Time"
"Engine Pre-lube Time Out Period"
"Engine Start Exhaust Temperature Feedback Time Delay"
"Engine Start Fuel Burst Command"
Monitoring and Protection
"Engine Post-Lube Duration"
"High Inlet Air Temp Engine Load Set Point"
Information for the Electronic Control Module (ECM)
"Engine Serial Number"
"Equipment ID"
Passwords
"Customer Password #1"
"Customer Password #2"
"Total Tattletale" Note: Not all of these configuration parameters exist in all versions of flash files for the G3600 FamilyEngines with the adem III ECM. It is recommended that the latest available software is installed.Governing of the Air/Fuel Ratio Control and of the Engine Speed
Gain, stability, and compensation can be adjusted for the following functions:
Primary governor
Auxiliary governor
Air choke
Exhaust bypass (wastegate)Gain (proportional) determines the speed of the control's response in adjusting for the difference between the desired condition and the actual condition. Increasing the gain (proportional) provides a faster response to the difference between the desired condition and the actual condition.Stability (integral) controls the speed for elimination of the error in the difference between the desired condition and the actual condition. The stability (integral) dampens the response to the error. Increasing the stability provides less damping.Compensation (derivative) is used to adjust for the time delay between the control signal and the movement of the actuator. If the compensation (derivative) is too low, the engine speed will slowly hunt. If the compensation (derivative) is too high, the engine speed will rapidly fluctuate.Illustration 1 shows some typical curves for transient responses.
Illustration 1 g01447739
(Y) Engine speed
(X) Time
(1) The gain (proportional) is too high and the stability (integral) is too low. There is a large overshoot on start-up and there are secondary overshoots on transient loads.
(2) The gain (proportional) is slightly high and the stability (integral) is slightly low. There is a slight overshoot on start-up but the response to transient loads is optimum.
(3) The gain (proportional) is slightly low and the stability (integral) is slightly high. There is optimum performance on start-up but slow response for transient loads.
(4) The gain (proportional) is too low and the stability (integral) is too high. The response for transient loads is too slow.
(5) The response to transient loads is adjusted for optimum performance. Illustration 2 is a graphic representation of adjusting the compensation.
Illustration 2 g01447741
The increased width of the line for the actuator voltage indicates that the linkage is more active as the compensation increases.
(Y) Actuator voltage
(X) Time in seconds