What is the difference between naturally aspirated and turbocharged engines

In fact, to put it simply, a turbocharged engine is a turbocharger added on the basis of a naturally aspirated engine, and then it is properly tuned. Not to mention the original turbocharging, it is very common to change from naturally aspirated to turbocharged in modified cars.

The principle of natural inhalation:

The engine piston runs to the upper dead center to remove the exhaust gas after combustion, at this time the exhaust valve is closed, the inlet door is opened, the piston moves down the dead center, negative pressure is formed in the cylinder (less than atmospheric pressure), the air is naturally sucked into the cylinder from the intake pipe, and the piston is sent to the bottom dead center (at this time, it is approximately regarded as the pressure in the cylinder is consistent with the outside, 1 pa), the intake valve is closed, the fuel is injected, the piston moves up the dead center to compress the mixed oil and gas, ignition at the top dead center, and the combustion work pushes the piston to move down the dead center, and opens the exhaust valve at the bottom dead center. The piston continues to run to the dead center to remove the exhaust gases.

The principle of turbocharging:

The turbocharger of the automobile has an impeller at each end, an intake impeller and an exhaust gas impeller, and the two impellers are connected by a rotating shaft.

The exhaust gas impeller is connected with the exhaust head section of the engine, the high-temperature and high-pressure exhaust gas discharged after the engine does work blows through the exhaust gas impeller to make it rotate at high speed, the rotating exhaust gas impeller drives the intake impeller through the rotating shaft, the intake impeller is connected to the engine intake pipe, the high-speed rotating intake impeller helps the engine to suck in more air, and the main difference with natural aspiration is that when the intake valve is opened, it is not only by negative pressure inhalation but by the intake impeller in the cylinder forcibly filled, and the air pressure in the cylinder is more than 1 pa, The F1 of the 80s was turbocharged, and the supercharging at that time could reach 4 PA.

Therefore, the turbocharger compresses air, so that the engine can inhale more air than in the naturally aspirated state, which is equivalent to achieving a larger displacement of the suction capacity of the naturally aspirated engine without expanding the cylinder capacity, and at the same time, the engine needs to inject more fuel and air mixed combustion when working. This allows the engine with a smaller displacement to get the output of a larger engine. Because more air is drawn in and more fuel is injected, the pressure and temperature in the cylinders of a turbocharged engine is much higher than that of a naturally aspirated engine, sometimes much higher.

To put it simply, it is the engine that presses the turbocharger, which can increase the liter power of the engine. Engine power 40%.

The principle of air intake is different, and the combustion efficiency of turbocharging is higher.

The inlet pressure of the naturally aspirated air will appear negative (in all cases).

When the turbo starts working, the exhaust gas drives the compressor to compress the intake air, and the intake pressure increases. The amount of air intake becomes larger, so that more fuel can be injected for combustion work.

Let's talk about this, 2 people run, 1 breathes naturally, and the other has a machine to blow into the mouth. It's easiest to understand.

The same brand on the market can be compared with natural air intake.

The intake principle is different The combustion efficiency of turbocharging is higher Therefore, the turbocharger compresses the air, so that the engine can inhale more air than in the naturally aspirated state, which is equivalent to achieving a larger displacement of the naturally aspirated engine without expanding the cylinder capacity, and at the same time, the engine needs to inject more fuel and air to mix and burn when working.

That is, the air intake volume is different, and then the combustion utilization rate is also different.

Turbocharged and naturally aspirated are different ways of intaking air into the engine.

1. Natural aspiration is a kind of automobile air intake, which is a form of atmospheric pressure pressing air into the combustion chamber without passing through any supercharger. Naturally-aspirated engines are far better than supercharged engines in terms of smoothness of power output and directness of response.

2. Turbocharging is a technology that uses the exhaust gas generated by the operation of the internal combustion engine to drive the air compressor. The main function of turbocharging is to increase the air intake of the engine, thereby increasing the power and torque of the engine and making the car more powerful. When an engine is equipped with a turbocharger, its maximum power can be increased by 40% or more compared to without a turbocharger.

This means that the same engine can be boosted to put out more power.

What is the difference between naturally aspirated and turbocharged engines? How to choose between the two engines.

The differences between turbocharged engines and naturally aspirated engines are as follows: 1. In terms of power, the acceleration ability of self-priming engines is smoother and slower; The turbocharged engine accelerates quickly and has a pushback feel. With the installation of a turbocharger, the maximum engine power can be increased by 40% or more.

2. In terms of fuel consumption, the self-priming engine is superior. Turbocharged engines consume much more fuel than self-priming engines. 3. In terms of technical reliability, the self-priming engine has lower noise and has more advantages than turbocharged engines in terms of smoothness, durability, stability and safety.

4. In terms of service life, the failure rate of turbocharged engines is high and the service life is short; Self-priming engines and turbocharged engines have high maintenance requirements. 5. In terms of manufacturing and maintenance costs, the material itself of turbocharger has high requirements due to the high temperature and high pressure of the working environment. Coupled with the configuration of the intercooler, it will be reflected in the terminal cost of sales.

What is the difference between a turbocharged engine and a naturally aspirated engine? What is the difference between a turbocharged engine and a naturally aspirated engine? Here are the differences between a turbocharged engine and a naturally aspirated engine:

1. Power: Under the same displacement, turbocharging is stronger than naturally aspirated power. 2. Maintenance:

The more powerful turbocharger may result in faster performance and reliability degradation than naturally aspirated, and later maintenance costs are usually slightly higher than naturally aspirated. 3. Fuel consumption: In terms of fuel consumption, in the case of the same displacement, if the vehicle is often used in urban areas, the fuel consumption performance of vortex supercharging is not as good as that of natural aspiration.

If you often go at high speeds, the vortex energy boosting is more fuel-efficient. 4. Manufacturing cost: The turbocharger itself has one more part, and because the working environment is high temperature and high pressure, the requirements for its material itself, coupled with the manufacturing cost of high precision, the cost of the turbocharger is higher than that of the naturally aspirated engine.

The differences between naturally aspirated engines and turbocharged engines are: 1. Different working principles: naturally aspirated engines obtain power through repeated air intake combustion of several cylinders; Turbocharged engines use exhaust gases to push the impeller and increase the air intake to gain power.

2. The power supply speed is different: the power supply speed of the naturally aspirated engine is slower; Turbocharged engines have a turbocharging system involved to provide power, and the speed is faster. 3. The noise level is different

The naturally aspirated engine has quiet and smooth idling, and it is less noisy when it starts; The turbocharged engine is fast and noisy.

The difference between a naturally aspirated engine and a turbocharged engine is: 1. The pressure at the engine air inlet is different: the pressure at the air inlet of the naturally aspirated engine is equal to the atmospheric pressure; The atmospheric pressure at the air intake of a turbocharged engine is higher than the atmospheric pressure.

2. The air intake mode is different: natural inhalation is negative pressure air intake, which needs to rely on the pressure difference to increase the cylinder volume to burn more gasoline; Turbocharging is a forced air intake, increasing the amount of air to burn more gasoline. The working principle of the engine is:

Air intake, fuel injection, and then compression, and work is generated. On the basis of the original, increase the air intake and fuel injection, you can improve the power of the engine and produce greater horsepower.