Description & Operation

The Bosch Continuous Injection System (CIS) is a mechanically operated system. Amount of fuel that is continuously injected to each cylinder is determined from air flow by the air sensor plate. This sensor plate is raised or lowered by the air flowing through the intake system to the engine. This, in turn, raises or lowers a plunger in the fuel distributor which increases or decreases amount of fuel to be injected at each cylinder.

Main components of the CIS system include: control pressure regulator, airflow sensor assembly, fuel distributor, thermo-time switch, auxiliary air valve, cold start valve, injectors, electric fuel pump, fuel accumulator, and a fuel filtering system.