The volume of the engine for each car is a constant value and does not change or fluctuate over time. From what volume the car has, its power directly depends. And this indicator affects absolutely everything - the speed and even the registration of annual car insurance.
It is necessary
- technical passport of the car;
- knowledge of the engine design
Instructions
Step 1
To determine the volume of the engine and calculate it correctly, you need to know how, in principle, the engine of a car works. The task of the engine is to convert the thermal energy obtained during the combustion of fuel in the cylinders into mechanical energy, which, in fact, allows the car to move.
Step 2
There are several cylinders in the car engine. They are placed in a single block, inside which pistons are additionally installed. And this whole system determines the volume of the motor by its work. Calculating it, despite its apparent complexity, is quite simple. To do this, you need to know the technical parameters of the "filling", that is, cylinders and pistons, and then calculate everything according to a certain mathematical formula.
Step 3
The formula used to calculate engine displacement, for example, for a four-cylinder car, looks like this: V = 3, 14 x H x D squared / 1000 (this is the number of revolutions per minute at low and medium rates). In this formula, the value D determines the diameter of the engine piston, indicated in millimeters, and H is the piston stroke in millimeters. For example, a car has a piston diameter of 82.4 mm, and a piston stroke of 74.8 mm, which means that the V of the engine will be as follows: 3, 14 x 74, 8 x 82, 4 x 82, 4/1000 = 1595 centimeters cubic. Accordingly, the power of such a machine is average.
Step 4
The volume is always calculated either in cubic centimeters or in liters. Determining the displacement of the engine, you can safely classify all cars into groups: small (up to 1, 4 liters), small (1, 2-1, 7 liters), medium (1, 8-3, 5 liters) and large (over 3.5 liters). In most countries in the world, taxation and insurance depend on engine displacement figures. So, for example, in some European countries for more powerful cars (those with a displacement of more than 2000 cubic centimeters), an increased tax is expected to be paid.
