BEARING 9D2319 - Caterpillar

Configuration Parameters
Certain parameters are unique for each engine application. Table 1 is a list of the parameters that can be configured for G3600 Engines. The values of the parameters can be viewed on the "Configuration" screen of the Caterpillar Electronic Technician (Cat ET).
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" 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 determines the speed of the control response in adjusting for the difference between the desired condition and the actual condition. Increasing the gain provides a faster response to the difference between the desired condition and the actual condition.Stability controls the speed for elimination of the error in the difference between the desired condition and the actual condition. The stability dampens the response to the error. Increasing the stability provides less damping.Compensation is used to adjust for the time delay between the control signal and the movement of the actuator. If the compensation is too low, the engine speed will slowly hunt. If the compensation is too high, the engine speed will rapidly fluctuate.Illustration 1 shows some typical curves for transient responses.
Illustration 1 g00806254
(Y) Engine speed
(X) Time
(1) The gain is too high and the stability is too low. There is a large overshoot on start-up and there are secondary overshoots on transient loads.
(2) The gain is slightly high and the stability is slightly low. There is a slight overshoot on start-up but the response to transient loads is optimum.
(3) The gain is slightly low and the stability is slightly high. There is optimum performance on start-up but slow response for transient loads.
(4) The gain is too low and the stability 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 g00806274
The increased width of the line for the actuator voltage indicates that the linkage is more active as the