# Advice 1: How to determine the power for the car

The power car is one of the main values that I look for when choosing the iron horse. The more power, the more expensive the car. But not always the power for the car stated in the documents coincides with that actually. In this case, it is possible to try to calculate yourself.
Instruction
1
Take the car documents that specify the engine serial number. According to this you can easily calculate the capacity of your machine's horsepower. To calculate fold last six digits of this number. Fold in pairs. The result is divide by a steady ratio of 8.5. As a result, you will get a figure equal to the real power of your car "horses".
2
If you have the opportunity, put the car on a special technological stand (such is usually found in the pits of racing teams and automotive Atelier, are engaged in the alteration and upgrade of machines). By electronics of such a unit will up to 100% to calculate you power your car. And most importantly - it will not take much time.
3
Compare the numbers in your passport technical means (PTM), with the real is possible with the help of specialized periodicals. To help you different online auto catalogs. Compare that to what technical characteristics are similar to your cars. Just be sure to look at those models that same year with yours, have the similar engine size, etc.
4
Resort to professional help. In a good an authorized technical center skilled artisans can easily determine the true power of your car. To do this, they carefully examined the car, put it in a special apparatus, etc.
5
Some craftsmen have tried to determine the power of your car by using real horses. This is bound herd of horses to the car and measured their thrust. How many horses will be needed in order to move the car from the place the power and has a car. Only with this method of measurement should take into account that one horsepower is taken pull 1 horse rising 1 m. and 1 kg. of Such standard measures can be found in Paris at the Museum "weights and Measures".

# Advice 2 : How to determine horsepower

To calculate the power of any car that uses the parameter HP. Today that is the value indicated in the vehicle documents. But still sometimes the calculation of horsepower is determined in kilowatt-hours. Then the vehicle power in horsepower can be re-calculated.
You will need
• - the car;
• station.
Instruction
1
When calculating the horsepower of your vehicle use domestic and European measurement systems. In one horsepower is 75 kg x m/s. If you decode the symbol, then one horsepower would equal the power needed to lift cargo weighing 75 kg to a height of 1 meter in 1 second. Besides horsepower can be translated and kilowatts. In this case, one horsepower is equal 735,5 W or 0,735 kW. The maximum speed that can develop an ordinary horse, call boiler horsepower.
2
To know the value of the power of the car, you must put these figures in accordance with the above equations. If the auto power is specified in kilowatts, to determine the horsepower required the value that is specified in the passport of the car, just split into 0,735. The final figure will be denoted by the amount of horsepower that this car has.
3
So the simplest way to know the amount of horsepower in a car, go to the nearest good station maintenance. Most of these stations there is a special setting-the computer, which will detect how many "horses" in your car. Get the car on the platform this installation, install it and squeeze until it stops the gas pedal. While your car will run for a few minutes, the computer will perform all the necessary measurements. After that you will be able to see the result and estimate how much horsepower your car has. By the way, horsepower as a measurement of power used for the first time in Scotland in 1789. Then one of James watt began to compare how much you need horses for moving from place a steam engine.

# Advice 3 : How to determine torque

Torque moment is one of the main characteristics of the force. To determine it, you need to know the force acting on a body, the point of its application to the body and the point of rotation of the body. The torque moment can be measured by knowing the amount of power the engine develops.
You will need
• - ruler or measuring tape;
• - stopwatch;
• - tachometer;
• - dynamometer;
• - ammeter.
Instruction
1
Find the point of application of force and the point around which the body rotates. Measure the distance between them. It will be arm strength. Determine the direction of the force at the point of its application, with a dynamometer to measure its value. Using a protractor or the protractor, find the acute angle between the straight line, which has the arm strength and power.
2
Find the twisting momentby multiplying the force value on her shoulder and the sine of an acute angle between them (M=F•l•sin(α)). If the moment of force is perpendicular to her shoulder then sin(α)=1 and under these conditions develops a maximum moment. When the location of the hand and shoulder along the same line, sin(α)=0 and the moment of force is also equal to zero.
3
The engine doing the work, develops a twisting moment, which is the algebraic sum of many points of forces acting on different parts of the engine. Therefore, the easiest way to learn torque moment from the technical documentation, which is attached to the device.
4
If such information is not available, using a tachometer measure the rpm of the motor shaft in revolutions per minute. Engine power measure or find out from the documentation, expressing it in kilowatts. Find the value of torsional momentand by multiplying the engine power by 9550 and dividing the frequency of rotation of the shaft M=P•9550/n.
5
To calculate the torque moment of the frame with a current in a magnetic field, which is the Foundation of any motor, teslameter to measure the magnetic field in which it is located. Measure the distance from the rotation axis to the vertical conduit of the frame – this is the shoulder of the active force. Measure the length of the vertical conductors.
6
Connect the frame to the current source, ammeter measure the amperage in it. The maximum twisting moment to the frame, find the multiplying number 2 (since the vertical conductors of the two) on the value of magnetic induction, the current, the length of the vertical conductor and the arm strength to M=2•B•I•l•r. To find the torque moment of the motor, multiply this value by the number of turns of the winding.

# Advice 4 : How to measure horsepower

Horsepower is a unit of power that is firmly entrenched in the automotive industry. Simply put, it is the power required to raise a mass of 75 kg to a height of 1 meter in 1 second.
Instruction
1
The easiest way to know the amount of horsepower in the engine of your car is to look into the technical passport of the car. If the registration certificate is missing, you can access the directory for that automaker, which shows the capacity of all manufactured cars. If power is indicated in kilowatts, then transfer it to horse power by the formula: power in kilowatts multiplied by 1,35962. Get the value of the power in horsepower.
2
If you are not satisfied with this formal approach, it is possible to measure the power of the engine of your car using a special dynamometer. Seek out this stand (it is in some points of maintenance vehicles), driving to the stand my car.
3
Then the next course of action: to start the car to warm up. Then put it in first gear and touch. Accelerate to 40-50 km/h, then go to the highest gear. Depress the gas pedal until it stops and try to reach the maximum engine speed (focused on the dashboard). As soon as the engine power will start to fall, turn the transmission into neutral.All this time a special program captures what is happening and, in the end, gives you the power value of your vehicle in horsepower.
Note
Please note that the impact on the result of measurement of engine power on a chassis dynamometer can provide various side factors. For example, as coupling devices tires, tire pressure, tire temperature (because they can heat up quite strongly during the experiment).
If judged strictly, there is only one accurate way to determine the power of a car engine. For this you need to remove the engine from the car and set it on a special device. But this process is very time-consuming and costly. So you have to settle for less accurate measurements, the error of which can be very high.

# Advice 5 : How to determine the power for the car

The power car is one of the main values that I look for when choosing the iron horse. The more power, the more expensive the car. But not always the power for the car stated in the documents coincides with that actually. In this case, it is possible to try to calculate yourself.
Instruction
1
Take the car documents that specify the engine serial number. According to this you can easily calculate the capacity of your machine's horsepower. To calculate fold last six digits of this number. Fold in pairs. The result is divide by a steady ratio of 8.5. As a result, you will get a figure equal to the real power of your car "horses".
2
If you have the opportunity, put the car on a special technological stand (such is usually found in the pits of racing teams and automotive Atelier, are engaged in the alteration and upgrade of machines). By electronics of such a unit will up to 100% to calculate you power your car. And most importantly - it will not take much time.
3
Compare the numbers in your passport technical means (PTM), with the real is possible with the help of specialized periodicals. To help you different online auto catalogs. Compare that to what technical characteristics are similar to your cars. Just be sure to look at those models that same year with yours, have the similar engine size, etc.
4
Resort to professional help. In a good an authorized technical center skilled artisans can easily determine the true power of your car. To do this, they carefully examined the car, put it in a special apparatus, etc.
5
Some craftsmen have tried to determine the power of your car by using real horses. This is bound herd of horses to the car and measured their thrust. How many horses will be needed in order to move the car from the place the power and has a car. Only with this method of measurement should take into account that one horsepower is taken pull 1 horse rising 1 m. and 1 kg. of Such standard measures can be found in Paris at the Museum "weights and Measures".
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