Digital Pressure Indicator DPI - Bedienungsanleitung
36 Friedrich Leutert GmbH & Co. KG
5.2.5 Data Info
The table [Data Info] shows the measuring data determined for each cylin-
der in numerical order. All presentations and mathematical calculations of
the DPI software are based on these measurements.
– Date, Time: Date and time of the measurement
– Average cycles: number of measured cycles (number of averages)
– Pmax_av: average peak pressure value of all measuring cycles
– Pmax_max: highest peak pressure value of all measuring cycles
– Pmax_low: lowest peak pressure value of all measuring cycles
– MIP: mean indicated pressure
– Deviation: standard deviation related to the mean value of all peak
pressures of a series of measurements.
– Ptdc: pressure value at top dead center
– RPM: engine speed
– Max dp / da: 1. derivation of the pressure curve
– Ind. Power: indicated cylinder power
– Boost pressure: boost pressure of the engine
– Ambient temp .: ambient temperature
The following values are not measured but can be optionally entered later
to complete the data record.
– Exhaust gas temp .: exhaust gas temperature
– Fuel rack setting: position of the injection linkage
– VIT setting: variable injection time
– Additional information: space for entering additional information
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