hyatt_racing_logo.jpg (14164 bytes)
bar_check.gif (1657 bytes)
Fuel injector Sizing Program
by Bowling

This program allows you to determine the correct fuel injectors to use based on a few engine parameters. Two different programs exist - one computes the operating rate for a given injector size, and the other determines the injector size (in Lbs/hr) based on maximum RPM at Wide-Open-Throttle (WOT).

Input your Engine Cubic Inch Displacement (CID):

Input the Engine's Volumetric Efficiency in %:

Input the Engine's RPM at Maximum Torque:

Cylinders: Four, Six, Eight, or Twelve

Enter Injection Mode:

Desired Air/Fuel Ratio:

Injector Size (Lbs/hr):

Want to Compute:

    .

Algorithm:

The following equations were used: 


w = cid * ve * 4.428e-05
wpc = w / ncyl
s = wpc / af
f = injec * (1./3600000.)
time = s/f
maxsquirttime = 60000./rpm
duty = 100. * time / (2.0 * maxsquirttime)
bestinjector = (s * 3600000.)/(2.0 * maxsquirttime * 0.8)
Bruce Bowling

Many Thanks to Mr. Bruce Bowling

About Hyatt Racing   Race Crew    Schedule     Pictures     Video Clips  

The Racer     Sponsors    Contact Info     Calculation Programs


© Copyright 1999 Hyatt Racing
and Tailboard.com

img_per-serv.jpg (2227 bytes)
PersonalServers
Seriously Easy Internet WEB Hosting
©1999 S&J Ventures