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Detailed description: Injectors

Fig 1: Identifying Fuel Injector
G06230092Courtesy of SAAB-SCANIA OF AMERICA, INC.

The injectors are connected directly to the fuel rail and are mounted in heat insulated bushings in the cylinder head ahead of the intake valves.

An injector comprises a valve body and nozzle with magneto armature. The valve body contains a magnetic coil and a guide for the nozzle. The injectors are controlled electro magnetically and are opened and closed by electrical impulses from the engine control module.

To achieve optimum combustion and thereby cleaner exhaust gases, the injectors have air-flushed jets to give a good distribution of the fuel.

The nozzles are secured by clips to the fuel rail. It is essential with regard to emissions and engine performance that the nozzles are positioned and secured correctly.