How is fuel flow varied in a variable displacement pressure type pump?
- Alter the camplate angle
- Remote servo pressure
- Direct cable to camplate
Explanation from PART66Online
A variable-displacement (axial-piston) fuel pump varies its delivery by changing the angle of the camplate/swashplate, which alters the piston stroke and therefore the volume pumped per revolution. Remote servo pressure may position the camplate, but the quantity delivered is set by the camplate angle itself rather than by a direct cable.
R
rajib asked · 5 Feb 2013
how many types of pumps are there? and what about camplate angle?
Community Comments (4)
P
PART66Online
5 Feb 2013
Check this: youtube.com/watch?v=2mh902AP7Yw
R
rajib
6 Feb 2013
thanks but can you give some more reference, so i can quench my thirst, thanks in advance :)
P
PART66Online
7 Feb 2013
Unfortunately I don't have any reference at the moment.
In my opinion working principle is very simple:
more camplate angle -> more piston displacement -> more total fue flow.
In my opinion working principle is very simple:
more camplate angle -> more piston displacement -> more total fue flow.
Z
zbd
26 Feb 2013
There are two basic types of fuel pump, Plunger type pump (variable displacement) and Gear type fuel pump. For Variable displacement type, the inclination of the camplate or swashplate and the movement of the rotor imparts a reciprocating motion to the plungers thus producing a pumping action. The stroke of the plungers is determined by the angle of inclination of the camplate.
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