Deutz EMR 2, Описание системы, Страница: 16 / 60

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EMR 2
System Functions
4.3 Speed control
Provision is made for various variations of speed control that must be programmed in advance (at the end
of the programming) depending on the application case (power generation, building or agricultural machi-
nes) and usage conditions. The variations depend on the type of programmed and the selected functions.
The following types of speed regulation (switches) are optional and are programmed at the works depen-
ding on the variant (pin assignment see Chapter 6.1):
Function Variant Description Remarks
Variable speed
control Variable speed
governor
1)
1) Types of speed control
Variable speed control
For this type of control the speed of the engine is governed or kept constant with reference to the desired speed of revolution.
For changes of load, the new required amount of fuel is set in accordance with a PID control. The desired value can be
determined through various variants.
Min/Max control
For this type of control, the fuel injection quantity is determined on the basis of the desired value. the result of this is that, for
this type of control, a speed of revolution depending on the load situation is set. The idling (= Minimum) and the end
revolutions (= Maximum) are controlled taking into account the control parameter speed droop 1 and speed droop 2. The
basis for this type of control is the drive characteristic field.
Pure variable speed governor without addi-
tion and switch-over functions Only one vari-
ant can be
selected
Fixed speed governor Variable speed governor with fixed, pre-defi-
ned speed for gensets (1,500 or 1,800 rpm),
desired speed of rotation is defined in the
scope of customer supply (KLU).
Change-over
switching speed 1 /
2
2)
2) Change-over switching see point 4.3.1.
Variable speed governor with change-over
switching possibility between two speeds.
Change-over swit-
ching speed fixed/
variable
2)
Variable speed governor with change-over
switching possibility between a fixed pro-
grammed and a variable speed of revolution.
Speed variable /
freeze
2)
Variable speed governor with change-over
switching possibility between:
freezing a current desired speed as set point
independent of the pedal setting, and a varia-
ble revolution.
Speed memory
function Customer-specific solution for storing and
calling up two speeds of revolution.
Genset
applications Power generation
governor with adju-
stable speed range As for change-over switching fixed/variable
speed.
Without Load the speed can be adju-
sted in the speed range.
See also
system des-
cription
EMR Genset,
TN 0297 9939
Power generation for
network synchronisa-
tion or Load distribu-
tion As for change-over switching fixed/variable
speed. The variable revolutions can be adju-
sted in the revolution range for network syn-
chronization or load distribution.
Power generation
governor with adju-
stable speed and
switchable overdrive
speed As for change-over switching fixed/variable
speed the power generator, in fixed speed
mode, can be used as the overdrive speed
without loading, in variable mode or for
parallel switching.
Variable speed-,
Min/Max-control Variable speed,
Min/Max governor
2)
Switching over between variable speed and
Min/Max control.
Min/Max-control
Min/Max governor
1)
Idling and end revolutions for vehicle
applications.