NANO

ENGINE

6. GAS INJECTOR

1. Function:

Fuel injection system is the latest technology that

increases the fuel efficiency of the engine. The most

important component in this system is the injector.

This device is used to inject fuel in manifold. It is a

highly precise component that is controlled by ECU.

2. Working Principle:

The injectors are normally closed and open when the

electromagnetic core is energized. The gas under

pressure flows through metering orifice. This ensures

consistent flow rate for a given Injector opening time.

Type: Solenoid

4. System Integration:

ECU provides drive signal to Injector (normally

closed) to open and remain in open condition (pulse

width-ms) depending upon the engine operating

conditions (speed/load). Also the pulse width is

compensated for low battery voltage condition. The

concept of Sequential injection means when ECU

provides drive signal to each injector separately at

the end of compression.

5. Fitment Detail:

Two numbers of injectors are first fitted on Gas rail

and then assembled on Intake manifold and the gas

is fed by a common Gas rail so that the gas injection

from each injector is directed towards inlet port.

6. Component Location:

7. Installation Guidelines:



Don’t use Injector which looks damaged or

dropped on the ground or subjected to any type

of shock with a tool etc.



The gas sealing zones of the injector (nozzle,

gaskets and connections) must be free from

cracks, dents, burrs and foreign bodies.



During the fitment/removal of the injector, the

force applied to the connecting pipes of the

injector must be in the direction of their axis in

order to avoid breaking one of the connections

due to too a high force.



The maximum force applied to the connections

must not exceed 100N.



During installation of the injectors O-ring, clip

must be lubricated. This lubrication makes the

installation easier and prevents any seizing risk

between the nozzle and the manifold.



No tools are required for the injector installation,

normal hand pressure is sufficient (apply force

on the injector axis until Gas rail touches Intake

manifold.



Use of improper tools/practices can damage the

injectors which may lead to leakages causing

safety hazards.