Upon closer examination technical characteristics engines internal combustion Most car enthusiasts are faced with such concepts as injection, carburetor engine. Many people have a fairly high level of knowledge about design features such units, but when it comes to naturally aspirated engines, only some car enthusiasts understand what will be discussed next. To dispel all doubts, this article will be useful.

What is a naturally aspirated engine

Although this concept is not often encountered in the automotive industry today, it is actually quite simple to understand. Oddly enough, the naturally aspirated engine is one of the most ancient and widespread units used in the automotive industry for many decades.

He represents conventional engine internal combustion, however, unlike injection or carburetor engines, it does not have additional automatic components that ensure more efficient fuel combustion.

Did you know? First piston engine internal combustion was created in 1807 by the French inventor Francois de Rivaz.

Today, this unit can rarely be found under the hood of a car, but just a few decades ago it was used everywhere for the production of passenger cars and trucks. At the same time, the type of fuel for the “aspirated” was not a key feature, since many models were created that work both on diesel fuel, and on gasoline. Despite its technical obsolescence, today such a motor is regaining popularity, since its advantages over modern models with turbocharging there are significant.

Find out why the engine may run rough and what causes this problem.

Principle of operation

The basic principle of any internal combustion engine is to ignite fuel in special chambers, due to which the pistons are driven, and then subsequent components of the car. The flammable liquid is often gasoline of various brands or diesel, but fuel also means a mixture of gasoline or diesel with air. This is the main condition for ignition in the engine, since without sufficient quantity oxygen this process is impossible.

The most optimal ratio for successful combustion is considered to be a mixture of 1:14 (flammable liquid: air). To solve this problem, any internal combustion engine has a special unit responsible for the mixture of fuel and air. In most modern cars, automatic air compressors or turbines (injector, carburetor) take on this task. That is why they are often called turbocharged.

But in “aspirated” everything goes by gravity. Due to natural atmospheric pressure, air tries to fill any free space, on the basis of which the principle is built naturally aspirated engine. However, this is often not enough to achieve an air-fuel mixture, so in “aspirated” engines it is created mechanical system air supply. The engine pistons act as an air pump that draws in required amount air into the combustion chamber. To do this, naturally aspirated engines are equipped with a special air duct that ensures an uninterrupted supply of oxygen from outside.

Thus, the main difference between a turbocharged engine and a naturally aspirated one is the automatic air blower, which is not present in “aspirated” engines. In addition, do not forget that in turbocharged engines the air fuel mixture is formed forcibly (due to the formation high blood pressure from 1.5 to 3 atmospheres).

Advantages and disadvantages of an atmospheric engine

Aspirated engines are found under the hood of many popular car brands. There are several reasons for this:

Reliability and unpretentiousness. First of all, this is due to the simplicity of the engine design, as well as the absence of additional elements that require routine inspection. Do not forget that “aspirated” engines are able to function safely even on fuel Low quality(in most post-Soviet countries this is the main condition for the absence expensive repairs). High maintainability and low cost of maintenance. The most modern naturally aspirated engine is often several times cheaper to repair than its turbocharged counterparts. This is achieved due to the simplicity of the design and the use of simple mechanical components. Even with a complete overhaul and replacement of leading parts, motors of this type can almost always be restored. A huge resource to use. As practice shows, in most cases, even with periodic use low quality fuel Such motors do not need repair until they have run several hundred thousand kilometers. There are cases when “aspirated” engines managed to work for decades over 300-500 thousand kilometers without any technical support.

Like any other technical device, the “aspirated” engine is not without its drawbacks. Often even the most expensive and high quality motor loses in efficiency and power to units with an automatic supercharger. At low and high speed“aspirated” engines are unable to absorb air from outside at the required rate, so the mixture of fuel and air is uneven. At high and low revs such a motor often loses power, and at low speed it can even stall at the wrong moment.

Did you know? The turbine is one of the most ancient technical devices used by humans. The first turbine prototype was created back in the 1st century AD. Greek scientist and designer Heron of Alexandria.

Which is better: atmospheric or turbocharged engine

The question of the advisability of installing turbocharged or naturally aspirated engines has been an unresolved debate among motorists for a long time, since both have disadvantages and advantages.

Undoubtedly, it is better to use a turbocharged engine under operating conditions at low and high speeds. In addition, their power is often 10-30% higher than that of naturally aspirated engines, which appeals to most fans of high-speed cars. However, for this, units with an artificial supercharger require special and careful care, as well as the selection of high-quality fuel. Otherwise, they don't last long.

In turn, “aspirated” engines are more suitable for use in medium-duty conditions and are much more economical. So if for you a car is just a means of transportation from work to home, this is your choice. In addition, such motors will last longer and will not require careful and scrupulous maintenance, which for most regions former USSR is a decisive advantage.

Video: Aspirated or turbocharged engine. What's better?

Don’t forget about their simpler design, which will also appeal to most “do-it-yourself” fans.

Important! Before choosing one or another engine system, you must determine for yourself for what end purposes the car will be used, as well as what exactly is required from the engine during its operation.

Is it possible to install a turbine on a naturally aspirated engine?

Increasing car power is one of the key issues that occurs among motorists around the world. That is why many people wonder whether it is possible to install a turbine on the naturally-aspirated engine of their car.

In theory, such an improvement should help increase the car’s power, which will undoubtedly affect its performance on the track.

Despite the existence of various conflicting opinions, thanks to the simplified design, it is possible to install a turbine on a naturally aspirated engine even in the most extraordinary auto repair shop.

This technique will make it possible to increase the efficiency of fuel combustion in the engine chamber, which will improve its performance by 10-30%. We recommend reading in more detail about the design and operating features of a diesel engine turbine. However, this car will require serious modifications. Installing a single turbine will not give any results, so engine transformation must be approached comprehensively. So, in addition to the turbine, it should be installed:

exhaust manifold and pipe - necessary to remove additional volume of exhaust gases; air supply line with a cooling system - a set of metal tubes with a built-in intercooler, which intake and prepare air (air must enter the combustion chamber cooled); injectors - controlled solenoid valves(they are required for automatic atomization of fuel in the combustion chamber); blow off - helps eliminate excess air from the turbocharging system.

The naturally aspirated engine is one of the most popular types of engines used in the automotive industry.

Important! Installing a turbine on a naturally aspirated engine will lead to additional fuel consumption. This must be taken into account when calculating the feasibility of its modification.

Despite its simplicity and unchanged design for decades, it has significant advantages over systems with automatic air supply. First of all, it is high efficiency, ease of operation and reliability, thanks to which the engine can function effectively for a very long time.

Simple 1.9 are tenacious and reliable engines, the condition depends on how this engine was serviced, a mileage of 300 k is not terrible for this engine. But what the odometer shows is garbage, because most of these engines have already covered 500k kilometers.
Krch this motor is also good because there are a lot of them at showdowns, they can be capitalized without any problems! and without high costs for parts.
The most expensive thing to repair in these 1.9 is the injection pump, which sooner or later will have to be restored by specialists.

2.0 - everything is more refined there and consumption is less per liter, oddly enough

Acceleration, when they say good/great dynamics they mean the possibility of strong acceleration

i-intercooler

With him less consumption And more power! It’s possible, in principle, to make it handmade)

I’ll tell you a secret, half the city rides with ellas noplude and nothing). If it were dangerous they would give you a three, but a one is like a warning, roughly speaking, for you.
It’s just that not a lot of oil leaks from the crankcase or the gearbox, of course it’s not pleasant, but it’s nothing to worry about.

For the mass of the A6 this is too small an engine.
Consequently, worse dynamics and higher consumption.

Star circuit - works much softer, but is not capable of developing full power.
Triangle circuit - working at full capacity

Depends on the properties of the fuel (compression, flammability, etc.), on diesel engine And you can also drive on gasoline for a while, damn it.

They don't have enough diesel anymore! If I only took the 1.8 turbo 180 horses, the simplest engine! And I would bypass all these 1.9 and 2.0 PDI (with pump injectors) !!!, in extreme cases you can still take a 2.5 TDI 180 horses with an engine code (BAU), but the diesel V6 is more expensive in terms of maintenance, and it consumes the same as gasoline 1.8 t, but with a chip this 1.8t still performs well! =) Also, gasoline will be even more profitable on gas, and it’s not so expensive to supply gas to 4 cylinders, you can even install a 5th generation LPG.

a4 is not for racing


oh well, even with 1.9 130 horses you can fry well, especially if the suspension package is sport.

• I didn’t, but I found out on my own.
  Honda Prelude 2.0 - including parts and labor 300 lats. As work progresses, additional problems may arise. expenses up to 30 lats. for a BMW, I think 300 lats will also work out. Why do you need this? Are you sure you need it? Maybe drive it to the stand first and see how much engine it produces?

  It makes sense to do this if oil is leaking/consuming, or power has dropped significantly. and if it’s so simple, don’t waste your money yet.

An atmospheric engine is a classic internal combustion engine in which air enters through the intake system and takes part in the process of creating a fuel mixture in each cylinder. As a result, the created fuel mixture ignites, creates energy and sets in motion the working elements of the engine.

Atmospheric engines are divided into three main groups of engines:

• gasoline - have gained the greatest popularity in the automotive industry;
• gas - they have not become widespread on an industrial scale, they are used as additional element in tandem with a gasoline engine;
• diesel - they do not have serious drawbacks, but are inferior in popularity gasoline engines, in the passenger car industry.

Atmospheric engines can be classified into types according to the method of fuel supply. According to this parameter, internal combustion engines are divided into two types: injection and carburetor.

What is the difference between a naturally aspirated engine and a turbocharged one?

These two types of engines are the most popular in the passenger car industry. However, they have significant differences from each other.

The main differences between naturally aspirated and turbocharged engines concern the following indicators: operating principle, volume and power, service life, quality of fuel and lubricants. Let's compare these parameters.

Turbocharged engine differs by the available turbocharging system. It consists of an intercooler, turbocharger, and turbine. As a result, more air enters the engine cylinders than into the engine of an atmospheric internal combustion engine. Therefore, the combustion process of an air-fuel mixture saturated with air is more efficient - more energy appears that starts the engine and drives the car.

Research has shown that to achieve a power of 125 Horse power, the volume of naturally aspirated and turbocharged engines will be different. In particular, for a turbocharged internal combustion engine a volume of 1 liter will be sufficient, and for a naturally aspirated engine this figure will be 1.6 liters.

With a power of 125 hp. s, a turbocharged engine will have slightly lower fuel consumption and better dynamics. And also the advantage of a turbocharged internal combustion engine is the greater weight of the naturally aspirated engine and its inability to support maximum power while driving in mountainous areas characterized by thin air.

In terms of service life, an atmospheric engine is superior to its counterpart. A turbocharged engine wears out faster. Moreover, the maximum distance that such an engine can cover without major repairs is 150 thousand kilometers. A naturally aspirated engine can overcome without overhaul within 300-500 thousand kilometers.

Ideally, for the smooth functioning of both types of engines, you need as much quality fuel And lubricants. However, an atmospheric engine, in comparison with a turbocharged engine, is less demanding in terms of quality. And also its repair will cost less.

As a result comparative analysis the conclusion emerges that:

• a turbocharged engine is better than an atmospheric one in terms of the amount of energy created, lower fuel consumption (with equal starting characteristics) and the volume required to achieve maximum power;
• an atmospheric engine is better than its counterpart in terms of service life and less pretentiousness to the quality of fuels and lubricants.

Pros and cons of naturally aspirated engine

An atmospheric internal combustion engine has a lot of advantages and several disadvantages. The advantages of the engine include:

• unpretentiousness of maintenance - to service the engine, you can use low-quality fuels and lubricants, the main thing is that they are suitable for the engine in their composition;
• multiple repairs - an atmospheric engine can withstand a large number of minor repairs, while the car owner can perform them independently (at home), without necessarily visiting a service station;
• wear resistance - this type is designed for long-term operation(several hundred thousand kilometers);
• maintaining the power level is a key advantage of the product, expressed in maintaining power at low engine speeds, responding to minimal pressure on the accelerator pedal, transitioning from low to high speed for a short period of time.

Except positive points, this type of motor has and negative sides. These include:

• weight of the product - naturally aspirated engines, in comparison with other types of engines, are heavier, without having an advantage in volume and power;
• support dynamics and power on maximum level– in rarefied air conditions, naturally aspirated engines are not able to maintain power at maximum, thereby losing the level of dynamics;
• exhaust product - when an atmospheric engine operates, a large amount of by-product is created ( exhaust gas), polluting air masses.

Motor or the engine is special device, with the help of which any type of energy is converted into mechanical energy. Motors can be primary or secondary. Primary motors operate using natural energy resources, which are converted into mechanical work. Secondary motors convert the energy that is generated or accumulated by other sources.

Among the prime movers, the following types are distinguished:

• engines external combustion (steam engines, steam turbine, Stirling's engine),
• internal combustion engines (reciprocating, piston engine, gas turbine engine etc.).

Secondary engines are divided into:

• electric motors,
• hydraulic machines and pneumatic motors.

The engine is the most important component of any car as it is what powers the car.

The mechanical energy that is produced in the motor is transmitted to the drive wheels using a transmission. Its design, together with the engine design, is called the power plant.

The main types of automobile engines include:

• internal combustion engines, or internal combustion engines,
• electric motors,
• hybrid installations, or combined engines.

The most common type of engine is the internal combustion engine, which operates using fuel. Thus, the chemical energy of burning fuel is converted into mechanical energy.

Among the internal combustion engines, the following types can be distinguished:

• piston engine,
• rotary piston,
• gas turbine

On modern cars installed piston internal combustion engines that use gasoline, diesel or natural gas as an energy source.

Electric motors are becoming more and more popular today as the number of electric vehicles increases. The main advantage of such transport is that it does not emit harmful impurities into the atmosphere.

The electric motor operates by electrical energy, which is obtained using fuel cells or batteries. The main disadvantage of such cars: the small capacity of the energy source, which results in a low power reserve. This deficiency has a negative impact on sales of electric vehicles.

Hybrid power plants today are latest developments in the field of automotive industry. This installation includes a conventional internal combustion engine and an electric motor. These components are connected to each other through a generator. Energy is transmitted to the drive wheels in this case either in series or in parallel.

Sequentially: internal combustion engine > generator > electric motor > wheel

In parallel: internal combustion engine > transmission > wheel and internal combustion engine > generator > electric motor > wheel

The parallel layout method is currently more preferable.