Naturally aspirated engine is the pressure of the cylinder will be outside the air into the cylinder inside, do not use forced intake device, that is, in the process of walking down the piston, resulting in a vacuum. At this time the outside world pressure is greater than the pressure inside the cylinder, the air from the big pressure into the small pressure inside the cylinder. So called natural breathing.

The advantages of turbocharged engine (ie, naturally aspirated engine shortcomings)

First, high efficiency, strong power. The same displacement of the car, turbocharged engine can compress more air, increase fuel injection, fuel more fully, bring the most direct impact is greater horsepower, more power.

Second, emissions control, improve fuel economy, reduce emissions. As the fuel is relatively adequate, emissions control, the turbocharger compared to natural inspiration easier to reduce emissions, especially the unit of carbon dioxide emissions. This is why the European depot have to increase efforts to develop turbocharged engine reasons.

Turbocharged engine shortcomings (ie, natural suction engine advantages)

Second, the price is expensive, because the same level of turbocharged engine than the naturally aspirated engine power to a little higher, coupled with turbocharged engine technology is not very mature, resulting in a turbocharged engine than the naturally aspirated engine The car is more expensive.