NANO

ENGINE 10 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. 3. 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.