Why is small-displacement turbocharging prevalent?
The first thing to say is the fuel consumption test of the Ministry of Industry and Information Technology. It adopts the NEDC cycle in Europe, and the test mileage and time are too short-only 1 1km, less than 20 minutes. Moreover, the driving passage is too gentle, which completely violates the real driving style of most people. For example, it takes 16 seconds to start accelerating to 32km/h and 26 seconds to accelerate to 50km. If people in China want to drive like this, then the auto show can be held directly on the way north of Guangzhou.
Under this working condition, the fuel injection and exhaust volume of a small-displacement turbocharged engine are simply not enough to meet the supercharging conditions, which is completely equivalent to a small-displacement naturally aspirated vehicle. For a large-displacement naturally aspirated car, this working condition is a bit like killing a chicken without a knife, which is more fuel-efficient. At the same time, the state has quota requirements for fuel consumption and emissions of car companies, and the fuel consumption is too high. Small-displacement turbocharging can run out of the fuel consumption of small-displacement natural inhalation, and it has the ability of not losing to large-displacement natural inhalation.
Secondly, let's talk about emission tax. You know, when buying a car in China, consumers have to pay at least four kinds of taxes-purchase tax, travel tax, value-added tax and consumption tax. If it is an imported car, there is an additional tariff. Purchase tax and vehicle and vessel tax are tax-free and paid directly by consumers when buying a car; Value-added tax, consumption tax and customs duties are all hidden taxes, which are collected by the government from the OEM, and then the manufacturer counts this part of the cost into the bare car price, and then the consumer "reimburses" it to the manufacturer.
Advantages and disadvantages of self-priming and turbocharging
Although under the same displacement, self-priming has the disadvantages of larger volume and higher fuel consumption compared with turbocharging, these disadvantages are not obvious enough for consumers to switch to turbocharging. So since the invention of the automobile, most of the time I still insist on self-priming.
However, turbocharging only plays the role of "auxiliary enhancement" for a long time, that is, it enhances the push-back feeling through instantaneous acceleration and brings a better acceleration experience. However, only people who love to play with cars will like it, and more ordinary people prefer to drive self-priming cars smoothly.
Because turbocharging has no more comfortable experience than self-priming, and has no obvious advantages in acceleration, volume and weight, cost and thermal efficiency, it is not easy to get rid of self-priming. In this way, it is normal for some people to miss self-priming.
In this era, more and more cars are equipped with turbocharging.
A new generation of magic cars, such as Bugattica Long Xing, pagani Huayala, Koenigsegg Agera, etc., are gradually becoming the totem of post-00 and post-10. These cars all use turbocharged engines. Self-priming may only be missed after 70, 80 and 90.
So, back to the original question, why do some people miss the naturally aspirated engine with large displacement? I think only those who have felt it for a long time, or those who lived in that era, have a better understanding.