wsm wg972-e4, Workshop Manual

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ENGINE
WG972-E4, WSM
1-M18
Evaporator
Liquid fuel comes to regulator from lock off valve,
and then comes into evaporator (1) through primary
valve. Evaporator (1) has a long fuel passage and liquid
fuel evaporates to gaseous fuel while passing through
this long passage.
Also, evaporator has hot water passage. The latent
heat of vaporization of fuel is generated when liquid
changes to gas. The coolant water of the engine is made
to circulate in evaporator as a heat source to prevent
freezing of vaporizer by latent heat of vaporization.
Outlet of evaporator is connecting with primary
chamber and secondary chamber, and also gaseous
fuel flows to primary chamber and secondary chamber.
9Y1211108ENM0034US0
(1) Inlet of Evaporator
(2) Hot Water Passage
(3) Evaporator
(4) Outlet of Evaporator A: Liquid Fuel In
(To Regulator)
B: Hot Water In
C: Hot Water Out
D: Gaseous Fuel Out
(From Regulator)
KiSC issued 07, 2015 A