Experiment No: 3 Title: Effect of transmission efficiency on Gear shifting speed Data:
Engine Operating Speeds : 800 RPM - 6500 RPM
Gear 1 2 3 4 5 Reverse Gear ratio 3.545 1.904 1.28 0.966 0.757 3.272
Axle Ratio = Final Drive Ratio = 4.105 Tyre Specification: 165/80/R14 Rolling Tyre radius calculation: Rolling Tyre circumference = 0.96*(Rim diameter + 2*Section width* Aspect ratio)* π Rolling Tyre Radius = Rolling Tyre circumference / 2 π
ℎ
( )=
2∗
∗ 3.6 ∗ ∗ 60 ∗ ∗
∗
(
ℎ)
Where, Rw = Rolling Tyre Radius NE = Engine Speed η = Transmission Efficiency GR = Gear Ratio GA = Axle Ratio
*Fo
↧