84 TP-6694 9/20
3.6.1 Gaseous Fuel System Concept (Single Fuel)
The gaseous fuel system uses a fuel solenoid valve to control the fuel flow to the electronic-controlled pressure regulator (EPR)
or direct acting electronic pressure regulator (DEPR). The generator set-mounted EPR or DEPR reduces the fuel pressure as
fuel passes to the fuel mixer.
The fuel mixer controls the ratio of fuel to air under varying load and speed conditions. Because the fuel mixer receives fuel in a
gaseous state, it does not have to vaporize the fuel.
Figure 32 Fuel Regulator and Valve, Typical
3.6.2 LPG Liquid Withdrawal Fuel System Concept
With the LPG liquid withdrawal fuel system, pressurized liquid LPG fuel passes from the tank to a vaporizer. The vaporizer
converts the liquid fuel to gas before sending it to the fuel EPR or DEPR. The system also includes a fuel solenoid valve that
shuts off the fuel flow when the engine stops. Contact an authorized service distributor/dealer for availability.
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