NANO

FUEL SYSTEM

Technical specifications of Cylinder valve:

Maximum working pressure:

260 bar

Working temperature:

- 40 to 85 deg.cen

Solenoid valve voltage:

12V DC

Nominal power rating of solenoid valve:

10W

Working Principle of Solenoid valve / coil:

The Tank solenoid valve is an integrated on the CNG

tank unit and turns ON/OFF the CNG output from the

tank. The valve is “normally closed” and is controlled

by the ECU to control the high pressure gas output

from the tank.

System Integration:

Tank solenoid Valve has an electrical interface with

the ECU and the ‘Change over Switch’ (COS). The

tank solenoid (shut-off) valve is controlled by the

ECU.

Stand Alone Diagnosis:



Use Multimeter:

Coil resistance @ 20°C= 9.7 ± 0.3kΩ.



Use TATA Diagnostic Tool, perform actuator

test.

Sensor end Pin assignment (on connector):

1: -ve (12V Supply from power relay)

2: +ve (ECU pin)

CAUTION:

The Information given above is just for reference

only and the repair or service of the above

component should be done at Authorized CNG

service stations only.

WIRING DETAILS (ECU & SOLENOID COIL)

REMOVAL OF CYLINDER VALVE FROM CNG

CYLINDER: (On-bench process)



Do not remove CNG cylinder valve unless CNG

cylinder is empty.



Hold the cylinder in a suitable fixture.



Remove the cylinder valve from the cylinder

using a torque wrench & tightening tool (Part No:

5402 5890 47 01).

REFITMENT OF CYLINDER VALVE ON CNG

CYLINDER:



Remove the thread protection cap from the

“cylinder valve” (for new assembly).



Remove the thread protection cap from the

“cylinder neck” (for new assembly) and ensure

that the threads are free from burrs and any

irregularities.



Remove the rubber gasket from the valve

thread (for new assembly).

NOTE:

Follow the guidelines for NPT threading for

assembly.