Doosan GC25P-3 User Manual

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LP Engine G430(3.0L) LP Fuel System (Low Emission Version)
Fuel Control Valve
1. Carburetor AVV port connection
2. Vaporizer secondary vent chamber connection
3. Electrical connectors
4. Balance line connection
The fuel control valve is a three way valve,
operated by a pulse width modulated electronic
signal applied to the electrical connectors (3) by the
fuel system ECU.
With no voltage supplied, the vaporizer secondary
vent chamber connection (2) port is connected to
the balance line connection (4) port and in this state
the pressure in the balance (4) pressure signal is
transferred via (2) to the vaporizer and the
carburetor AVV port (1) is blocked. When a signal is
provided to the electrical connectors (3) the valve
opens and connects the vaporizer secondary
atmospheric vent chamber port (2) with the
carburetor will provide a vacuum signal (AVV)
which is therefore ‘pulsed’, into the vaporizer
secondary chamber when port (1) and (2) are
connected (i.e when the valve is energized).
1
2
4
3

Doosan GC25P-3 Specifications

General

Brand	Doosan
Model	GC25P-3
Category	Engine
Language	English