Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 228
Figure 17.1 Min Max Governor Operating Regions
17.1.2 Min / Max Governing Configuration
The Min/Max governing option is available for all levels of engine software and
is enabled by selecting min/max governing within the Mode selection section
of the engine software. Please refer to the mode selection section of this
document for more information on the configuration of these switches.
17.1.3 Min / Max Governing Installation
The Min/Max governing feature requires no special installation other than a
method of engine speed demand. Please refer to the engine speed demand
section of this document for more information on the methods supported by
the engine ECM.
17.2 Engine All Speed Governing
The default governor type is an All Speed Governor, also known as a variable
Speed Governor. The diagrams and text below in figures 17.2 and 17.3
illustrate the torque and speed characteristics of this governor.
17.2.1 Engine All Speed Governing Operation
The All Speed Engine Governor will attempt to hold a constant engine speed
for a given throttle position. The governor senses engine speed and load and
meters the fuel supply to the engine such that the engine speed remains
constant or to vary with the load in a predetermined manner. This governor
Low Speed
Governor
Operating Area
High
Speed
Governor
Operating
Area
ENGINE SPEED (RPM)
TORQUE (Nm)
0
0
200
500
400
600
800
1000 25001500 2000
Low Idle
Speed
High Idle
Speed
1000
Engine Throttle
Position Equates to an
Approximate Engine
Power Output Within
This Region
Engine Torque Curve
High Idle max = Rated
speed + 12%
Rated Speed