Specifications

89
Data Parameters Transmission Parameters
ENGINE RUN TIME LONG TERM MONITOR
ENGINE RUN TIME SHORT TERM MONITOR
Range: ______________________________________________________ not available
Used on the EGS system. These parameters display engine run time, either on a long or short
term monitor, and indicate how long the engine has been running. The timer is reset to zero each
time the ignition is turned to the OFF position.
ENGINE SPEED (1/MIN)
Range: ____________________________________________________0 to engine max
Used on all systems. This parameter displays engine crankshaft speed in revolutions per minute
(RPM). The ECU updates this calculated value once per minute, and relies on reference pulses
from the ignition system or the crankshaft position (CKP) sensor.
ENGINE TORQUE
Range: ____________________________________________________ –200 to 800 Nm
Used on the EGS system. This parameter displays the ECU-calculated engine torque in newton
meters (Nm). The value varies according to engine load.
The ME-MOTRONIC engine management uses torque-led control, which means it calculates the
engine internal torque produced during combustion. This is the physical force produced by gas
pressure during the compression and power strokes. The actual net torque of the engine has to
account for friction, gas transfer losses and drive power for equipment such as the water pump,
alternator, and AC compressor. The ME program contains the optimal specifications for charge
density, injection duration, and ignition timing for any desired torque. This makes it possible to
obtain optimal emissions and fuel consumption for every operational mode.
Operational demands are prioritized and coordinated individually to use the appropriate control
to achieve the specified torque. Torque based control is possible because the electronic
accelerator permits throttle valve control beyond the pedal valve inputs. Engine torque deviates
when shifting gears. The nominal or desired valve is stored in the ECU. As the ECU briefly
retards the ignition timing during shifts, engine torque decreases and shift quality improves.
FILL CORRECTION TIME (CYCLE)
FILL MEASUREMENT TIME (CYCLE)
Range: ______________________________________________________0 to 15 cycles
Used on the EGS system. Do not use at this time.
FRONT AXLE SPEED
Range: ___________________________________________________ 0 to vehicle max
Used on ME27 and ME28 systems. This parameter indicates the speed of the front axle based
on input signals to the ECU from the wheel speed sensors. The measurement units can be
changed from KPH to MPH.
FRICTIONAL OUTPUT
Range: ______________________________________________________ not available
Used on the EGS system. No information is available at this time.
GEAR COMPARISON COUNTER
Range: ______________________________________________________ not available
Used on the EGS system. No information is available at this time.
GRADE(%)
Range: ________________________________________________________ –30 to 30%
Used on the EGS system. This parameter displays the grade of the roadway in percentage.
Positive percentages represent an uphill grade; negative percentages represent a downhill