Easy Newbie Questions
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Joined: May 2004
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From: Campbell River. BC
Easy Newbie Questions
Het guys I'm curious on a couple of things. Can someone tell me what EDM stands for, and how do Ford's HEUI (I think thats what they are called) fire, something about oil pressure? Thanks.....
Administrator / Scooter Bum
Joined: Sep 2002
Posts: 9,090
Likes: 52
From: Central VA
This explains EDM pretty well.
http://www.engineersedge.com/edm.shtml
http://www.engineersedge.com/edm.shtml
Adminstrator-ess
Joined: Mar 2003
Posts: 22,594
Likes: 19
From: New Holland, PA
HEUI (Hydraulic Electronic Unit Injector) injectors are run off the high pressure oil pump, I think it runs somewhere around 200 PSI. The injectors are supplied with 40 psi of fuel pressure off a fuel rail. A solenoid on the injector controls the flow of the high pressure oil a piston in the injector. When the oil pressure pushes on the piston, it pressurizes the fuel in the injector and the injector fires just like an injector that is attached to a pump. It's just a different way of getting injection pressure to the injector.
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