How to find out the engine capacity: determine the working volume of the internal combustion engine
As you know, Many motorists directly associate engine displacement with power and speed. In practice, this is often the case, after all, when it comes to cars, and not about special equipment, then the larger the engine capacity, the faster, the vehicle is more powerful and dynamic.
Note, that the exception to this unspoken rule can be considered except that units with a mechanical compressor or turbocharger, where the working volume can be relatively small, however, the power of such a motor is quite high compared to atmospheric counterparts.
Drivers also know, that commonly accepted type designations 1.5, 1.8, 2.0, 3.5 etc.. d. may differ slightly from the actual volume of the internal combustion engine. Example, engine 1.5 liters can physically have 1497 cubic centimeters, however, the engine 4.4 actually has whole 4499 "Cubes" of volume.
For this reason, some owners have a desire to know the actual volume of the power unit. It may be necessary to calculate some taxes on the content of the vehicle, etc.. d. Next we will try to answer the questions, how to determine the volume of the engine.
Engine capacity: how to find out
First of all, this characteristic can be determined, having studied the technical passport of the vehicle. You can also use it to determine the VIN code of the car, which is actually a unique vehicle identification number and contains a lot of useful information about the configuration of the car, country of its production, etc.. d.
The wine code of the car can be in different places, on the rack between the driver's and passenger's rear doors on a special plate, closer to the wheel arch, under the back seat, on the torpedo closer to the windshield, under the hood in the area of the motor shield, etc.. d.
Note, what if you buy a car, which was already in use, then the data on the technical certificate and VIN-code may well differ from the real ones. If simple, swapo motor (engine replacement) not always carried out on exactly the same unit. Usually when replacing the engine, the motor itself is often put more powerful than the regular one, although there are cases, when a less productive solution is intentionally established.
To get accurate information, you need to find the engine number, as well as other markings on the internal combustion engine. Based on the data obtained, you can then find this motor in the manufacturer's catalogs and find out its displacement, as well as other characteristics. pay attention, not always the engine number can be easily detected.
Different manufacturers apply markings in certain places, so you need to be able to look at the cylinder block from behind, you may need to look below (a manhole is required, lift or overpass), unscrew the flaps in the wheel arches, etc.. d.
However, it may be so, that the engine number is not readable (rusted, sawn, etc.). In this case, reliably determine, which engine is under the hood, much more complicated, especially that, who is not a specialist.
Of course, in such a situation, you can turn to official experts, however, for obvious reasons, this should not be done, especially if the car is registered, and there are no legal problems with it. It is also not necessary to advertise the identified problem, providing the car for inspection to private independent experts.
If the question of determining the actual volume is very acute (example, when selecting spare parts for repairs, etc.), then you need to stock up on knowledge separately, how to know the volume of the engine by the volume of the cylinder. In other words, should be studied, how to find out the volume of the ICE cylinder.
How to determine the volume of the engine cylinder
so, to find out the volume of the engine cylinder, should be understood, that the cylinder is actually a container, like household items of cylindrical shape (a cup, bank, etc.). Knowing the radius and height, the volume is calculated quite easily. If these parameters are not set, then the task becomes more complicated. You still need to consider that, that the engine cylinder is not always perfect in a circle.
Let's return to the measurements. To calculate the volume, you need to multiply the height by the number "Pi" and the square of the radius (The volume is equal to B multiplied by ? and multiply by P?. The letter B in this formula is the height of the cylinder, P represents the radius of the base, and the number ? approximately equal to 3,14.
The volume of the cylinder itself is measured in cubic units corresponding to the radius and height. Usually cm3 is used to measure the volume in the internal combustion engine (cubic centimeters), if the parameters are set in meters, then the volume data are displayed in cubic meters (cubic meters) etc.. d.
It is important to understand, that this formula is suitable for measuring the volume of a straight circular cylinder, that is, the base is a circle, and the guide is strictly perpendicular to it.
We also recommend reading the article about it, what is the degree of compression of the internal combustion engine. In this article you will learn about this parameter, as well as the degree of compression in the design of the internal combustion engine.
By the way, if instead of the radius of the cylinder the source data has a diameter, then the calculations should be performed according to the formula, where the volume is equal to B multiplied by ? and multiplied by (D / 2)?. Another formula for calculations is the following: The volume is equal to ? multiplication of multiplication of ? and multiplied by D?. In this case, the diameter of the base of the cylinder.
As for practical measurements, it is somewhat easier to measure the perimeter, ie the length of the circle of the cylinder base, than measure diameter or radius. It turns out, calculate the volume, if the perimeter of the cylinder base is known, it is possible by the formula, where the volume is equal to ? multiply by multiply by P? / ?. The letter P is the perimeter of the base. Still to be considered, that in the calculations the actual capacity will be slightly less than that, which will show the calculations, as the size of volume of walls of a vessel is not considered.
As a result
As you can see, There are various reasons why you need to know the exact engine capacity. Naturally, VIN-code and data in the data sheet are the fastest way to determine the parameters of the internal combustion engine.
However, this is only appropriate, when the history of the car is known, the engine has not been replaced before or the number of the replaced engine allows the unit to be identified, motor not previously "capitalized", that is, no boring / sleeve of the cylinder block was performed during the overhaul, etc.. d.
If even one of the above cases can be excluded from the list, then the only way to obtain reliable information about the actual displacement of the cylinders is to disassemble the engine with the following accurate measurements.
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