Revision as of 03:30, 22 October 2017

Concept

Use max engine output to power the pump and calculate hydraulic fluid flow and torque.

 Torque (ft-lb) = HP * 33000 / 2 * pi * RPM = 16 * 33000 / 2 * pi * 3600 = 23.34 ft-lb

Use pump specs to calculate displacement:

 RPM * CIPR = 0.92 CIPR * 3600 RPM / 231 cu-in/gal = 14.33 GPM

@@ Line 21: / Line 21: @@
 Use max engine output to power the pump and calculate hydraulic fluid flow and torque.
-The idea is to use the maximum power available from the motor to power the pump and calculate the torque to the hydraulic pump.
+===Torque===
+   Torque (ft-lb) = HP * 33000 / 2 * pi * RPM = 16 * 33000 / 2 * pi * 3600 = 23.34 ft-lb
-Pump Input:
-   Torque at rated input (5HP and 3600 RPM): torque = 5 HP * 33000 / 2 * pi * 3600 = 7.29 ft-lb
-  Solve for pump RPM: RPM = .303 HP * 33000 / 2 * pi * 7.29 ft-lb =~ 218
-Engine Specs:
-  Displacement:	420cc Bore: 90, Stroke: 66.
-  Max Output:	16.0 HP / 3600 RPM.
-  Max Torque:	28.5 Nm / 23.34 ft/lb.
-  Shaft Size:	1" Diameter, 2-3/4" Long, 1/4" Keyway,
-  Shaft End:	3/8" Size 24 UNF - Drilled and Tapped
-  Measurement from Center of Shaft to Base:	5"
-  Fuel Tank Capacity:	1.75 Gallons
-  Fuel Consumption:	1/2 Gallon Per Hour (at 1/2 load)
-  Dry Weight:	77 lbs
-  Recommended Fuel Type:	Gasoline - 87 Octane Rating Or Better
-Pump Specs:
-  Disp: 0.92 cu. in. / rev.
-  Pump Type: Gear
-  Rotation: CW
-  Pressure: 3000 PSI Max.
-  Speed: 3600 RPM Max.
-  Flow: 7.17 GPM @ 1800 RPM and 2000 PSI.
-  Mount: 2 bolt SAE A
-  Shaft: 5/8" 9T spline, 1-1/4" long.
-  Inlet Port: SAE 16
-  Outlet Port: SAE 10
-  Size: 4-1/2" x 5-1/8" x 4-5/8"
-  Shpg: 12 lb.
 ===Hydraulic Fluid Flow===
 Use pump specs to calculate displacement:
    RPM * CIPR = 0.92 CIPR * 3600 RPM / 231 cu-in/gal = 14.33 GPM