is a calculation of the rate at which work is done. the formula is ( torque x rpm ) / 5252 different...
TRANSCRIPT
Is a Calculation of the Rate at Which Work Is Done.Is a Calculation of the Rate at Which Work Is Done.
The Formula Is ( Torque X RPM ) / 5252The Formula Is ( Torque X RPM ) / 5252
Different Rating Standards Give Different Horsepower Results.Different Rating Standards Give Different Horsepower Results.
Another Term for Horsepower Is Watts.Another Term for Horsepower Is Watts.
Watts Rating on Horsepower Chart Is Not Used to Match Generator Output.Watts Rating on Horsepower Chart Is Not Used to Match Generator Output.
Torque Value and RPM Are Needed to Calculate Horsepower.Torque Value and RPM Are Needed to Calculate Horsepower.
HORSEPOWERHORSEPOWER
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Is the Measured Output of Twisting Force That the Engine Can Provide at a Given RPM.Is the Measured Output of Twisting Force That the Engine Can Provide at a Given RPM.
An Engine Is a Torque Producing Device.An Engine Is a Torque Producing Device.
Maximum Torque Can Only Be Achieved at Wide Open Throttle.Maximum Torque Can Only Be Achieved at Wide Open Throttle.
Volumetric Efficiency Is the Limiting Factor in an Engine.Volumetric Efficiency Is the Limiting Factor in an Engine.
Any Increases in RPM After Volumetric Efficiency, Will Result in Loss of Torque.Any Increases in RPM After Volumetric Efficiency, Will Result in Loss of Torque.
Excess Torque Capability Is Translated Into Speed.Excess Torque Capability Is Translated Into Speed.
TORQUETORQUE
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Distance Distance
Force
Torque
WRENCHWRENCH
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0
200
200
Distance (D) = 1 FootDistance (D) = 1 Foot
10 lbs
Force (F)
F X D = T
or
10 Pounds X 1 Foot = 10 Foot Pounds
Torque (T)
TORQUE WRENCHTORQUE WRENCH
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200
0
200
0
200
200
Distance Traveled
1 Foot1 Foot
10 lbs
Force
Torque10 ft lbs
TORQUE WRENCHTORQUE WRENCH
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200
0
200
0
200
200
2 Feet2 Feet
Distance Traveled is
GreaterTorque10 ft lbs
5 lbs
Force
TORQUE WRENCHTORQUE WRENCH
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Combustion Pressure
PISTONPISTON
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Combustion Pressure
PISTON & RODPISTON & ROD
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Combustion Pressure
ROD & CRANKSHAFTROD & CRANKSHAFT
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CombustionPressure
ThrowThrow
Pressure
Rotation
ROD & CRANKSHAFTROD & CRANKSHAFT
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ThrowThrow
Pressure
Rotation
DistanceDistance
CombustionPressure
ROD & CRANKSHAFTROD & CRANKSHAFT
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ThrowIncreased
ThrowIncreased
Rotation
Pressure
CombustionPressure
ROD & CRANKSHAFTROD & CRANKSHAFT
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D = Perpendicular Distance
F = Force
D = Perpendicular Distance
F = Force
A Torque As Applied to a Rotating Shaft
ROTATING SHAFTROTATING SHAFT
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D
F
CombustionPressure
Rotation
ThrowThrow
Combustion Pressure Is Force
Rotation Is Twist
Throw is Perpendicular DistanceThe Formula for Torque is;Force X Distance = Torque
If Torque Is to Remain the Same and We;
Increase the “Throw” of the Crankshaft, The Speed of Rotation Will Go Down.
Decreased the “Throw”, the Speed of Rotation Will Go Up.
TORQUETORQUE
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Lawnmower Weights 50 Lbs.
EXCESS TORQUEEXCESS TORQUE
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50 Poundsof Lift
LIFTINGLIFTING
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FASTERLIFT
LIFTINGLIFTING
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With the throttle plate at “wide open”, the maximum
amount of torque is achieved.
EXCESS TORQUEEXCESS TORQUE
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With the throttle plate at less than “wide open”, the
maximum amount of torque has not been achieved. If we open the throttle any more, torque does not
increase. The extra torque will be translated to an
increase in speed.
EXCESS TORQUEEXCESS TORQUE
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