Dictionary for MegaLogViewer Calculated Fields
Posted: Tue May 22, 2007 8:34 am
This is a list of all the optional calculated fields in MLV and their meaning. I will keep adding to it and include it on the MLV site.
Wideband O2 AFR - Air Fuel Ratio calculated based on O2 field for specified WB sensor. This is for MS1 only, MS2 typically logs AFR directly to an afr field.
Wideband O2 Lambda - Lambda calculated based on O2 field for specified WB sensor. This is for MS1 only, MS2 typically logs Lambda directly.
Boost(psi) - Converts MAP to psi with 0 = to atmospheric pressure.
- Input: "Engine off MAP pressure in KPA" - The MAP value while the engine is not running, corrects for sea level and error.
VAC(inHg) - Converts MAP to vacuum in inHg
- Input: "Engine off MAP pressure in KPA" - The MAP value while the engine is not running, corrects for sea level and error.
Boost-Vac - Below atmospheric pressure Vacuum in inHg, above Boost in PSI
- Input: "Engine off MAP pressure in KPA" - The MAP value while the engine is not running, corrects for sea level and error.
TP ADC - Calculates the original ADC value based on TP in percentage.
- Inputs:
- "Maximum TPS ADC" - the ADC value with your throttle at wide open.
- "Minimum TPS ADC" - the ADC value with your throttle in idle position
MPH\ Xxx\ Gear
- Inputs:
- "Tire Diameter(in.)" - Drive tire outside diameter in inches
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used
KPH\ Xxx\ Gear
- Inputs:
- "Tire Diameter(cm.)" - Drive tire outside diameter in centimeters
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used
HP - Horsepower calculated from rate of speed change. Car must be in the defined gear on level ground for accurate results. Currently uses US measurement units only.
- Inputs:
- "Min TP to calculate for" - Filter condition, HP will only be calculated when TP is over this value. This heavy calculation will slow log load times if hp is calculated for the entire file.
- "Tire Diameter(in.)" - Drive tire outside diameter in inches
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used
- "Converter stall speed (0 for manual trans)" - Converter flash stall, the RPM that you flash to from a stop with traction.
New or changed for 2.68:
Fuel Flow - Total Fuel flow for combined injectors in lb/hr or cc/min depending on what rating is used for the injector input.
- Inputs:
- "Injector Opening Time" - the injector open time configured in you MS, usually 1.0
- "Alternating(enter 0.5) or Simultaneous (enter 1)" - whether your injectors are configured to fire Simultaneously or alternating.
- "Number of Squirts" - Number of squirts per cycle configured in your MS
- "Injector Size" - the rated or corrected rating for your injector
- "Number of Cylinders/Injectors" - Number of injectors.
Instant MPG - point in time fuel economy in Miles per gallon. Like the instant MPG gauge in many modern cars.
- Inputs:
- "Injector Opening Time" - the injector open time configured in you MS, usually 1.0
- "Alternating(enter 0.5) or Simultaneous (enter 1)" - whether your injectors are configured to fire Simultaneously or alternating.
- "Number of Squirts" - Number of squirts per cycle configured in your MS
- "Injector Size" - the rated or corrected rating for your injector
- "Number of Cylinders/Injectors" - Number of injectors.
- "Tire Diameter(in.)" - Drive tire outside diameter in inches
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used, for Instant MPG usually your high gear. 1.0 in non overdrive transmission, less if overdrive equipped.
Wideband O2 AFR - Air Fuel Ratio calculated based on O2 field for specified WB sensor. This is for MS1 only, MS2 typically logs AFR directly to an afr field.
Wideband O2 Lambda - Lambda calculated based on O2 field for specified WB sensor. This is for MS1 only, MS2 typically logs Lambda directly.
Boost(psi) - Converts MAP to psi with 0 = to atmospheric pressure.
- Input: "Engine off MAP pressure in KPA" - The MAP value while the engine is not running, corrects for sea level and error.
VAC(inHg) - Converts MAP to vacuum in inHg
- Input: "Engine off MAP pressure in KPA" - The MAP value while the engine is not running, corrects for sea level and error.
Boost-Vac - Below atmospheric pressure Vacuum in inHg, above Boost in PSI
- Input: "Engine off MAP pressure in KPA" - The MAP value while the engine is not running, corrects for sea level and error.
TP ADC - Calculates the original ADC value based on TP in percentage.
- Inputs:
- "Maximum TPS ADC" - the ADC value with your throttle at wide open.
- "Minimum TPS ADC" - the ADC value with your throttle in idle position
MPH\ Xxx\ Gear
- Inputs:
- "Tire Diameter(in.)" - Drive tire outside diameter in inches
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used
KPH\ Xxx\ Gear
- Inputs:
- "Tire Diameter(cm.)" - Drive tire outside diameter in centimeters
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used
HP - Horsepower calculated from rate of speed change. Car must be in the defined gear on level ground for accurate results. Currently uses US measurement units only.
- Inputs:
- "Min TP to calculate for" - Filter condition, HP will only be calculated when TP is over this value. This heavy calculation will slow log load times if hp is calculated for the entire file.
- "Tire Diameter(in.)" - Drive tire outside diameter in inches
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used
- "Converter stall speed (0 for manual trans)" - Converter flash stall, the RPM that you flash to from a stop with traction.
New or changed for 2.68:
Fuel Flow - Total Fuel flow for combined injectors in lb/hr or cc/min depending on what rating is used for the injector input.
- Inputs:
- "Injector Opening Time" - the injector open time configured in you MS, usually 1.0
- "Alternating(enter 0.5) or Simultaneous (enter 1)" - whether your injectors are configured to fire Simultaneously or alternating.
- "Number of Squirts" - Number of squirts per cycle configured in your MS
- "Injector Size" - the rated or corrected rating for your injector
- "Number of Cylinders/Injectors" - Number of injectors.
Instant MPG - point in time fuel economy in Miles per gallon. Like the instant MPG gauge in many modern cars.
- Inputs:
- "Injector Opening Time" - the injector open time configured in you MS, usually 1.0
- "Alternating(enter 0.5) or Simultaneous (enter 1)" - whether your injectors are configured to fire Simultaneously or alternating.
- "Number of Squirts" - Number of squirts per cycle configured in your MS
- "Injector Size" - the rated or corrected rating for your injector
- "Number of Cylinders/Injectors" - Number of injectors.
- "Tire Diameter(in.)" - Drive tire outside diameter in inches
- "Final Drive Ratio" - Axle drive ratio
- "Transmission gear ratio" - ratio for the transmission gear used, for Instant MPG usually your high gear. 1.0 in non overdrive transmission, less if overdrive equipped.