Turbo Fuel Boosting System

Fig. 22 Acceleration System Schematic:

The warm-up regulator/boost control unit, Fig. 22, is connected directly to the intake manifold. The special warm-up regulator incorporates a steel diaphragm valve. The pressure of the spring in the valve is influenced by a bi-metallic regulator and a rubber diaphragm that reacts to the pressure created by the compressor. At a pressure of about 5.8 psi (0.4 bar) the spring pressure of the steel diaphragm is reduced and there is a consequent drop in the control pressure.
There is an overrev limiting function incorporated into this system. It is designed to break the circuit to the fuel pump when the RPM exceeds 6,000 RPM as well as when the engine stops. The system consists of a pulse sensor that is activated by ignition pulses. If the ignition pulses do not occur for a period of one or more seconds, or indicate that the engine is operating at over 6,000 RPM, the relay will break the circuit, thereby interrupting the current flow to the fuel pump and other fuel system components.