411670 Volvo.Penta V-belt pulley

Table 1
Configuration Parameters for G3520B Industrial Engines    
Parameter    
Timing Control    
First Desired Timing    
Second Desired Timing    
Desired Engine Timing Offsett    
Air/Fuel Ratio Control    
Fuel Quality    
Gas Specific Gravity    
Fuel Specific Heat Ratio    
Emissions Feedback Mode Configuration    
Desired Engine Exhaust NOx Level Setting    
Air/Fuel Proportional Gain    
Air/Fuel Integral Gain    
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 Operation    
Engine Speed Droop    
Governor Gain Factor    
Governor Stability Factor    
Governor Compensation Factor    
Auxiliary Proportional Governor Gain 1    
Auxiliary Integral Governor Gain 1    
Auxiliary Derivative Governor Gain 1    
Start/Stop Control    
Driven Equipment Delay Time    
Crank Terminate RPM    
Engine Purge Cycle Time    
Cooldown Duration    
Cycle Crank Time    
Engine Overcrank Time    
Engine Speed Drop Time    
Engine Prelube    
Engine Prelube Time Out Period    
Engine Postlube Duration    
Monitoring and Protection    
High Inlet Air Temp Engine Load Set Point    
Module Information    
Engine Serial Number    
Equipment ID    
Customer Password #1    
Customer Password #2    
Total Tattletale    Timing Control
The timing parameters allow the customer to program the timing electronically of the ignition spark to meet the needs for specific applications and installations. The desired timing value can be changed while the engine is running or while the engine is stopped.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 or in the 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". The ECM selects the "First Desired Timing" when the timing select switch creates an open circuit for terminal J1-20 at the master ECM."Second Desired Timing"
The "Second Desired Timing" is determined with the methane number of the alternate fuel that is used and the Engine Performance Sheet, "Fuel Usage Guide". The ECM selects the "Second Desired Timing" when the timing select switch creates a short circuit to ground for terminal J1-20 at the master ECM.If an alternate fuel is not used, enter the same timing value for the "Second Desired Timing" parameter that is entered in the "First Desired Timing" parameter."Desired Engine Timing Offset"
The feature provides the offset of engine ignition timing to compensate for timing errors. The errors are due to resistances in the electrical circuitry and 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 for retardation of 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
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 air/fuel ratio control 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."Fuel Quality"
This parameter is the fuel Low Heat Value (LHV). The air/fuel ratio control of the ECM will compensate for some inaccuracy in this setting. The ECM assumes a corrected value that is multiplied by the "Fuel Correction Factor". The status of the parameter can be viewed with Cat ET.The "Fuel Quality" parameter can be used to change the air/fuel ratio when the engine is operating in the open loop mode. To richen the air/fuel mixture, reduce the value. The calculation will compensate for the reduced LHV by increasing the fuel flow. To lean the air/fuel mixture, increase the value. The calculation will compensate for the increased LHV by reducing the fuel flow."Gas Specific Gravity"
This parameter is the fuel-specific gravity in relation to the specific gravity of air. The ECM does not use this information. The ECM provides the information to the fuel metering valve via the CAN data link. Some fuel metering valves require an input for the "Gas Specific Gravity" in order to precisely meter the fuel flow."Fuel Specific Heat Ratio"
This parameter is a ratio of the fuel-specific heat at a constant pressure and at a constant volume. The ratio is also known as "k". The ratio is related to the expansion of the gas across the fuel metering valve. The ECM does not use this information. The ECM provides the information to the fuel metering valve via the CAN data link. Some fuel metering valves require an input for the "Fuel Specific Heat Ratio" in order to precisely meter the fuel flow.