EFI, Alpha-N vs Speed Density fueling Strategies

Signman · 03-12-2014, 10:10 AM

Have heard of and read a few articles on this.
Injecting fuel behind the valve may not be the best location for atomization and mixture. Moving injector up the intake runner may allow better fuel distribution in the air stream. Pointing the injector into the air stream would seem to force the issue.
Some high HP engines have two sets of injectors: at the valve and up in the runner.
Has anyone played with direct injection in a HP application?
Sounds like fun.

03-12-2014, 10:10 AM	#22
Signman Senior Member Join Date: Oct 2003 Location: Lower Slower Delaware Posts: 535 Likes: 22 Liked 269 Times in 99 Posts	Re: EFI, Alpha-N vs Speed Density fueling Strategies Have heard of and read a few articles on this. Injecting fuel behind the valve may not be the best location for atomization and mixture. Moving injector up the intake runner may allow better fuel distribution in the air stream. Pointing the injector into the air stream would seem to force the issue. Some high HP engines have two sets of injectors: at the valve and up in the runner. Has anyone played with direct injection in a HP application? Sounds like fun. __________________ Frank Ferrucci I/SA 1271 "Be Thankful for the Gifts You are Given"

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