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Engines / Injector question
« on: May 01, 2011, 01:39:53 AM »
Okay... Complete Noob here. You have been warned.
The engine is a Vidhata 1-banger water-cooled 1500 RPM.
Question: the injector has a threaded backshell which when removed shows a slotted adjustment locked in place with a lock nut ala a valve adjuster. A cutaway diagram I found on the net shows this screw sets the pressure on a spring which holds the injector pintle against the seat. Tightening this screw inwards causes the exhaust to clean up considerably. Loosening it yields somewhat dirtier deposits inside the stack.
What is this adjustment really doing??? Since fluid isn't compressible, I don't see it changing the timing, but I am willing to be called wrong. Or is this just setting the injector pressure and more pressure means better atomization?
Help?
Roark
The engine is a Vidhata 1-banger water-cooled 1500 RPM.
Question: the injector has a threaded backshell which when removed shows a slotted adjustment locked in place with a lock nut ala a valve adjuster. A cutaway diagram I found on the net shows this screw sets the pressure on a spring which holds the injector pintle against the seat. Tightening this screw inwards causes the exhaust to clean up considerably. Loosening it yields somewhat dirtier deposits inside the stack.
What is this adjustment really doing??? Since fluid isn't compressible, I don't see it changing the timing, but I am willing to be called wrong. Or is this just setting the injector pressure and more pressure means better atomization?
Help?
Roark