PISTON SPEED 20131210

PISTON SPEED

Let's continue with its physical applications

 Piston Speed As the engine rotates, the piston velocity at the TDC and BDC is zero and the central part faster, thereby taken piston speed - average. With the following formula:
V = average piston speed
L = step (m).
N = Turn the engine (rpm).
V = 60 30 2LN = LN

Of BDC , the piston will move back up for round crankshaft , thus the 2x piston movement , willproduce 1 crankshaft rotation , if the crankshaft makes N round , the 2LN moving piston . Because it is expressed in seconds divided by 60 .

TORQUECompressive force on the rotating swivel called Torque , motorcycle driven by torque of the crankshaft The more the number of teeth on the gear , the greater torque occur . So the speed is reduced to half . In a state machine Torque = force x distance The length of playback ( r ) is equated with the distance from crakkshaft to the crank pin , this means half of the pistons . The force ( F ) is done on player equated with pressure generated by gas compression results combustion which will encourage piston down , therefore the torque ( T ) change according to the magnitude of the force( F ) for fixed r . The magnitude of the force F , the corresponding change with the change of the engine speed means influenced by efficiency combustion , as well as T also changed . The specific torque at speed becomes maximum . This is called torque maximum . But the increase in speedThe next machine will not improve torque .

MAXIMUM TORQUEThe magnitude of the maximum torque every motorcycle is different . When the motorcycle works with maximum torque , wheel force The back is also maximum . The greater the torque , the greater the power the motorcycle . The amount of torque is usually included in the data technical specifications , service manuals or in the marketing brochure a motor products .

POWER (HORSE POWER)The average work force is measured by the end ( torque from crank sepda saft drive motors , but this is just the style to move motorcycles and motorcycle drive speed is not taken into account . Power is the speed that causes the work ) . power = timeja ker = Kg.m / sec . ( work per second )• Unit labor PS ( Prerd strarke in Germany ) 1 PS - 75 Kg m / sec is power to move an object weighing 75 kg as far as 1 m in 1 secon ( the greater the power the greater the labor union jurnlahtime ) . • Calculation of crankshaft power To count the number of times the pen moves by rotating crank The specific force per unit time ( seconds ) Work ( Q ) = Force ( F ) x distance ( r ) Torque ( T ) = Force ( F ) x distance ( r ) Force ( F ) = Torque ( T ) : the distance ( r ) Distance ( r ) taken by the rotation of the crank pin per minute = 2π . Rnpower = timeja ker = Kg.m / sec . ( work per second )

The relationship between the rotation and the engine horsepower (Power) Engine power varies depending on the torque and speed rotary engine. Engine with high torque, power is usually also generated great but if the round is too high energy produced will decrease. If on a particular round in the produce maximum power, then it is called "Maximum power". Description SI (units) The contents or capacity of 1 L engine (1,000 cm3) Pressure of 1 kPa (0.01 kg/cm2) Power of 1 kW (1,360 PS) Torque of 1 Nm (0.1 kg.m)