Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 156
Figure 11.14 Example Power Curve With All Available Speed Settings
11.11.1 Engine Low Idle
11.11.1.1 Engine Low Idle Operation
The engine low idle speed determines the minimum allowable engine speed
during normal engine operation i.e. if no throttle demand is supplied to the
engine ECM (assuming the engine is running) and there is no load on the
engine the engine will idle at the set low idle speed.
The selectable low idle engine speed is confined to the limits set by the Low
idle lower limit and the low idle upper limit. These values are fixed in software
and are not configurable.
11.11.1.2 Engine Low Idle Configuration
The desired engine low idle speed can be set using the service tool via the
configuration screen. The low idle speed defaults to 800 and can be
programmed to any value between 800 and 1200 step size of 10 rpm. If a low
idle setting of less than 800rpm is required then please contact the Electronic
Applications Engineering department.
11.11.2 Engine High Idle
11.11.2.1 Engine High Idle Operation
The engine high idle speed determines the engine full throttle desired engine
speed value. As with the low idle setting this parameter is configurable by the
customer and can be set to an engine speed limited by the fixed software
limits High Idle Lower Limit (HILL) and High Idle Upper Limit (HIUL).
The high idle speed setting also works in conjunction with the Rated speed
Setting (RS) to determine the high Speed Governor (HSG) run out line.
15
30
45
60
75
90
105
120
135
150
165
180
Power Kw
Speed Rev/Min
Peak / Rated
Power
RSULRSRSLL
HILL
HI HIULLILILL LIUL
High Speed
Governor
Curve (Run
Out Line)
Engine Governor Operating
Area