How do you determine VE of an engine?
#2
Supreme Member
Join Date: Apr 2001
Location: USA
Posts: 4,969
Likes: 0
Received 0 Likes
on
0 Posts
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
I would assume a dynamometer??
In order to find the VE you have to know the torque and HP curve, as well as other things such as displacement, cam specs, etc. The only way to accurately do that is a dyno.
In order to find the VE you have to know the torque and HP curve, as well as other things such as displacement, cam specs, etc. The only way to accurately do that is a dyno.
#3
Supreme Member
iTrader: (-1)
Join Date: Mar 2002
Location: SE Michigan
Posts: 1,728
Likes: 0
Received 2 Likes
on
2 Posts
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
DD2000 is highly accurate on all the measurements...Manifold Pressure, VE, IMEP,FMEP, and BMEP pressure...i dont know what they are but there measured lol
there power peaks are under perfect conditions but the curves are almost dead on
there power peaks are under perfect conditions but the curves are almost dead on
#4
Supreme Member
iTrader: (2)
Join Date: Apr 2000
Location: South Windsor, CT
Posts: 1,316
Likes: 0
Received 229 Likes
on
193 Posts
Car: '89 GTA
Engine: ZZ6TPI
Transmission: T56
Axle/Gears: Borg Warner 3.70:1
Volumetric Efficiency can't be meausreed by horsepower and torque. The equation is:
(Volumetric Flow of Air entering Engine)/(Displacement*RPM/2)
You would need a way to measure the incoming air, like a Mass Airflow Sensor. If you used a scanning software like Diacom, you can measure the mass airflow while running on the dyno, or at the track, convert that to volumetric airflow. Then calculate VE on different RPM points, and graph VE vs. RPM.
(Volumetric Flow of Air entering Engine)/(Displacement*RPM/2)
You would need a way to measure the incoming air, like a Mass Airflow Sensor. If you used a scanning software like Diacom, you can measure the mass airflow while running on the dyno, or at the track, convert that to volumetric airflow. Then calculate VE on different RPM points, and graph VE vs. RPM.
Thread
Thread Starter
Forum
Replies
Last Post