5.5.7 Flow limiting valve
For each cylinder there is one flow limiting valve installed on the fuel rail.
The position of the piston (003, Figure 5-39) gives the quantity of fuel for the injection. When the
injection valves open, the piston (003) moves to the right until the injection stops. When the
injection valves are closed, the piston (003) moves back to the start position.
If the injection time is too long (for example if an injection valve is stuck open), the piston (003)
closes the supply.
If an injection valve is damaged, the flow limiting valve sets the maximum limit of fuel that can
be injected into the cylinder.
Fig 5-39 Flow limiting valve (generic)
Legend
001 Fuel outlet (number related to the engine) 003 Piston
002 Fuel inlet
X92DF
AA00-5565-00AAA-043A-A
Operation Manual Flow limiting valve
Winterthur Gas & Diesel Ltd.
- 218 - Issue 002 2020-08
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