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LPG & NG BI-FUEL SYSTEM
When the engine operates with LPG, the NG shutoff valve will be closed. The LPG first enters the LPG
shutoff valve and then goes to LPG evaporator to turn the LPG to vapor and later enters the DEPR and
further mixes with the air in the mixer as shown in Figure 12.
Figure 12: LPG & NG Bi-fuel system
VPG SINGLE FUEL SYSTEM
For single VPG fuel application, the same shut-off valve as NG is used to turn on or off the fuel, but the
shut-off valve needs to be connected with the secondary fuel connector from the harness as Secondary
Lock-off (LPG) only.
COOLING SYSTEM
Figure 13 shows the configuration of the cooling system. Please refer to Figure 5 for the 2D dimensions
of the cooling system installed with the engine and skid.
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