Service Manual Instruction Manual

SECTION 3 - CHASSIS & TURNTABLE
3-64 – JLG Lift – 3121616
3.16 DEUTZ EMR 2
The EMR2 consists of sensors, control unit, and actuator.
Engine-side controls and the JLG Control System are con-
nected by separate cable harnesses to the EMR control unit.
Sensors attached to the engine provide control unit electron-
ics with all relevant physical parameters In accordance with
information of the current engine conditions and precondi-
tions (throttle position etc.), the EMR2 controls an actuator
that operates the control rod of the injection pump and thus
doses the fuel quantity in accordance with the performance
requirements.
Exact position of the regulating rod is reported back and, if
necessary, is corrected, by means of the control rod travel sen-
sor, situated together with the rotation magnets in a housing
of the actuator.
The EMR2 is equipped with safety devices and measures in the
hardware and software to ensure emergency running (Limp
home) functions. In order to switch the engine off, the EMR2 is
switched in a de-energized fashion over the ignition switch. A
strong spring in the actuator presses the control rod in the de-
energized condition into the zero position. As a redundancy
measure, an additional solenoid serves for switching off and
this, independently of the actuator, also moves the control rod
in the de-energized condition into the zero position.
After programming over the ISO9141 interface, the EMR2 pos-
sesses a motor-specific data set which is permanently assigned
to the engine. Included in this are the various application cases
as well as the customer’s wishes regarding a particular scope
of function.
Each EMR2 module is matched by serial number to the engine.
Modules cannot be swapped between engines.
Figure 3-80. EMR 2 Engine Side Equipment
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