Deutz Engine Control Units EMR4 Instruction Guide

With the introduction of DEUTZ Tier 4 engines (interim and final), the EMR4 engine management system has been implemented. This system uses the control units EDC17CV52, EDC17CV54, and EDC17CV56, depending on the required functionality.

All DEUTZ DCR engines (DEUTZ Common Rail System for TCD 4.1, TCD 6.1, TCD 7.8, TCD 12.0) are equipped with a single EDC17 controller, except the TCD 16.0, which features two controllers (master and slave).

The EMR4 engine management system enables precise fuel injection control based on engine operating parameters. It incorporates functions essential for achieving high system security levels and the required exhaust quality.

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Control Units Overview

EDC17 CV52

• Number of cylinders: 4, 6
• Injection system: Electronic DCR up to 2000 bar
• EAT system: DPF and SCR
• Operating voltage: 12V and 24V
• Installation location: Chassis, cabin

EDC17 CV56

• Number of cylinders: 4, 6
• Injection system: Electronic DCR up to 1600 bar
• EAT system: DPF or SCR
• Operating voltage: 12V and 24V
• Installation location: Chassis, cabin

EDC17 CV54

• Number of cylinders: 4, 6
• Injection system: Electronic DCR up to 1600 bar
• EAT system: DPF with throttle flap
• Operating voltage: 12V and 24V
• Installation location: Chassis, cabin

Detailed descriptions of these control units can be found in the EMR4 System Description.

Functional Description of EMR4

The EMR4 control unit is compatible with the EMR3 system regarding interface functions. It provides the following standard functionalities (availability depends on the ECU):

1. Ambient pressure-dependent filling limit.
2. Monitoring and engine protection functions for:
   • Fuel filter
   • Fuel pre-pressure
   • Charge air temperature
   • Rail pressure
   • Oil pressure
   • Coolant temperature
   • Speed
3. Engine start controlled by the ECU, including starter activation and restart lock.
4. Engine stop via a switch.
5. Activation, control, and monitoring of Exhaust Aftertreatment (EAT) components (DPF and/or SCR).

Optional functionalities include:

1. Velocity control and limitation.
2. Multiple state switches (up to 4 fixed speeds selectable).
3. Extended monitoring and engine protection functions for:
   • Coolant level
   • Air filter differential pressure
   • EAT components
4. Enhanced test functions.
5. Override function (delays engine shutdown).
6. Automatic engine shutdown for protection or shutdown requests for special applications.

System Elements of EMR4

The EMR4 system comprises the following components:

1. Control unit (ECU).
2. Speed sensors for the crankshaft and camshaft.
3. Rail pressure sensor and rail pressure control valve (MPROP/PRV).
4. Coolant temperature sensor.
5. Combined charge air pressure and charge air temperature sensor.
6. Oil pressure sensor.
7. Ambient pressure sensor (integrated into the control unit).
8. Speed setpoint transmitter and accelerator pedal.
9. Signal lights for warnings, diagnostics, and error messages.
10. Diagnostic button.
11. Engine and vehicle wiring harnesses.
12. Fuel pre-filter monitoring (water-in-fuel detection).
13. Control and monitoring of the EAT system (Exhaust Aftertreatment).