Fuel Injection System - BOSCH LH: Description: Injectors

The injectors are located in the intake manifold and point directly at the intake valve. All injectors are supplied with fuel from a common fuel manifold. The injection pulse is controlled by a needle valve assembly in the bottom of the injector. The needle valve is operated by an electric solenoid which is switched on and off by the electronic control unit. All fuel injectors inject fuel at the same time.