4.4.2. Supply moduleΒΆ

Description

The supply module is a part of the vehicle SCR system. The supply module is a hydraulic unit which sucks the reducing agent (DEF/AdBlue) from the tank, pressurizes it ( approx. 8-10 bars) and delivers it to the dosing module which is fixed to exhaust line. Supply module is controlled via Engine ECU.

The AGCO Power part number: 8370 73770 Supply Module 12V
8370 73771 Supply Module 24V

ECU connection

The pin numbers at the ECU:

K24 Pressure sensor 5V reference supply
K78 Pressure sensor analog signal input
K77 Pressure sensor ground
K07 Pump motor ground
K73 Pump motor supply
K93 Pump motor PWM
K30 Reverting valve (HS)
K08 Reverting valve signal (LS)
K33 Heater signal
K25 Heater relay control
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ECU connection, Supply module connector

Characteristics

Common information:

Supply module normal pressure = 8-10 bars, offset 1 bar.
Supply module pressure build up time = approx 2-4 minutes.
Supply module emptying time = approx 2 minutes.
../../_images/Supply_module2.jpg

Characteristics, Supply module

../../_images/Supply_module11.jpg

Characteristics, Supply module hose connectors