AdBlue/DEF HOSE

STRUCTURE OF AdBlue/DEF HOSE

1: Connector

2: Housing

3: Coupling

4: Corrugated tube

5: Insulation tape

6: Heating wire

7: Nylon tube

•It is used as AdBlue/DEF piping between AdBlue/DEF tank and AdBlue/DEF pump or between AdBlue/DEF pump and AdBlue/DEF injector.

•The shape of the engaging portion between AdBlue/DEF tank and AdBlue/DEF pump or AdBlue/DEF injector pin is based on 3/8 inches or 5/16 inches of SAE J2044. It can be disconnected or connected with one touch.

•There are 2 types of hose end shape such as straight shape and 90 deg. elbow shape.

•There are 2 types of nylon tubes of its outside diameter 5 mm and 8 mm. Choose the suitable one according to the model and the part to use.

FUNCTION OF AdBlue/DEF HOSE

•In the cold weather, the specified current flows in the heating wire immediately after the engine is started. It heats nylon tube and thaws AdBlue/DEF which has frozen in the nylon tube.

•It also keeps temperature constant to prevent AdBlue/DEF from freezing again while machine is operated.

AdBlue/DEF TANK HEATING VALVE

STRUCTURE OF AdBlue/DEF TANK HEATING VALVE

A: Engine coolant inlet

1: Solenoid

2: Solenoid core

3: Solenoid coil

4: Spring

B: Engine coolant outlet

5: Plunger

6: Diaphragm

7: Valve

FUNCTION OF AdBlue/DEF TANK HEATING VALVE

•AdBlue/DEF tank heating valve thaws AdBlue/DEF tank, and opening/closing of the valve (7) is done by solenoid (1).

•The opening position of valve is fixed and the control is only for opening/closing. When the solenoid (1) is de-energized, the valve is closed.

•Diaphragm (6) prevents entering of engine coolant into solenoid (1).

OPERATION OF AdBlue/DEF TANK HEATING VALVE

1. When solenoid coil (3) is energized, solenoid core (2) is magnetized and pull plunger (5) to open valve (7) which is directly connected to plunger (5).

2. When solenoid coil (3) is de-energized, solenoid core (2) loses pulling force and plunger (5) is pushed down by spring (4) and valve (7) is closed.

LAYOUT OF ENGINE COMPONENTS