0332369 JOHNSON GASKET

ECM Identification Parameters
Equipment ID
The customer can assign an Equipment ID to identify the engine application.Engine Serial Number
The engine serial number is programmed into the ECM at the factory. The number is stamped on the engine information plate. If the ECM is replaced, the engine serial number must be programmed into the new ECM.ECM Serial Number
The ECM serial number is programmed into the ECM at the factory.Software Group Part Number
Part number of the flash file that is currently installed in the ECM.Software Group Release Date
Release date of the flash file that is currently installed in the ECM.Software Group Description
Description of the application for the flash file that is currently installed in the ECM.Timing Control
The timing parameters allow the customer to program the ignition timing for the engine to meet the needs for specific applications and specific installations.Note: The actual ignition timing at a given instance may vary from the desired timing value. This variance is due to variations in the engine speed, engine load, or detonation.First Desired Timing
The First Desired Timing is determined with the methane number of the primary fuel that is used. Use the Engine Performance Sheet, "Fuel Usage Guide".
Note: Determine the desired timing by using the Caterpillar Software, LEKQ6378, "Methane Number Program" with the results that are from the fuel analysis. Use of only the data from the gas analysis can result in incorrect settings.Desired Engine Timing Offset
The feature offsets the ignition timing in order to compensate for timing errors. These errors are due to resistances in the electrical circuitry and the stackup of mechanical tolerances.This parameter provides a manual method that will allow additional timing adjustment to be performed after calibration of the speed/timing sensor. Perform a negative adjustment to this parameter in order to retard the engine timing. Perform a positive adjustment to this parameter in order to advance the engine timing. Only perform an adjustment to this parameter if engine operating indicators and measured data indicate that an adjustment is required.Air/Fuel Ratio Control (AFRC)
Before the initial start-up, a current gas analysis is required. Periodic gas analyses are also recommended. Use the Caterpillar Software, LEKQ6378, "Methane Number Program" in order to calculate the parameters for AFRC for Caterpillar Gas Engines. The results are programmed into the ECM.Note: Use the Caterpillar Software, LEKQ6378, "Methane Number Program". The improper programming of the air/fuel ratio control can result in damage to the engine.The Caterpillar Software, LEKQ6378, "Methane Number Program" is also contained in Caterpillar Software, LERW4485, "GAS ENGINE RATING PRO - VERSION 3.03". This software also contains information that is related to engine performance.Emissions Feedback Mode Configuration
The "Emissions Feedback Mode Configuration" parameter can be set to "Oxygen Feedback" or to "Feedback Disabled". This feature allows the feedback control to be disabled in order to troubleshoot the engine. For example, disable this feature in order to determine if the AFRC is the cause of a problem with instability of the engine.If a problem with the oxygen sensor is suspected, set this parameter to "Feedback Disabled". This setting will place the engine control in open loop mode. Use the "Emissions Feedback Disable Fuel Actuator Position Command" parameter to adjust the air/fuel mixture for the engine. An emissions analyzer must be used in order to verify the emissions levels of the engine while the engine is operated in open loop mode.Do not leave an engine that is operating in open loop mode unattended.Aftertreatment #1 Outlet Oxygen Sensor Voltage Offset
Use the "Aftertreatment #1 Outlet Oxygen Sensor Voltage Offset" parameter to calibrate the control map for the oxygen sensor signal voltage while the engine is in "Oxygen Feedback" mode. Use an emissions analyzer in order to determine the emission levels of NOX that is in the exhaust. Increment the "After treatment #1 Outlet Oxygen Sensor Voltage Offset" parameter in order to increase the level NOX in the exhaust. Decrement the "After treatment #1 Outlet Oxygen Sensor Voltage Offset" parameter in order to decrease the level NOX in the exhaust.Emissions Feedback Disable Fuel Actuator Position Command
Use this parameter to adjust the fuel valve position while the Emissions Feedback Mode Configuration is set to Feedback Disabled.Speed Control
Low Idle Speed
Program this parameter to the desired low idle rpm.Engine Acceleration Rate
This parameter controls the rate for engine response to a change in the desired engine speed. For example, the engine can be programmed to accelerate at a rate of 50 rpm per second when the "Idle/Rated" switch is turned to the "Rated" position.This parameter is also used for the rate of deceleration.Maximum Engine High Idle Speed
Program this parameter to the desired maximum high idle rpm.The actual high idle speed is regulated by the desired speed input. The regulation is linear in proportion to the desired speed input. An input of 0 percent results in the minimum high idle rpm and an input of 100 percent results in the maximum high idle rpm.Minimum Engine High Idle Speed
Program this parameter to the desired minimum high idle rpm.The actual high idle speed is regulated by the desired speed input. The regulation is linear in proportion to the desired speed input. An input of 0 percent results in the minimum high idle rpm and an input of 100 percent results in the maximum high idle rpm.The "Minimum High Idle Speed" parameter and the "Maximum High Idle Speed" parameter determine the slope of the desired speed input.Governor (Proportional) Gain Percentage
This parameter is used in determining the rate of response to an engine load. Refer to Testing and Adjusting, "Engine Governing - Adjust" for the adjustment procedure.Governor (Integral) Stability Percentage
The adjustment of "Governor Stability Factor" dampens the response of the actuator to changes in the load and speed. Increasing this value provides less damping. Decreasing the value provides more damping. To reduce the governor overshoot, decrease the value. To reduce governor undershoot, increa