Is the more gear in the car transmission, the more fuel-efficient it is?
Many friends are asking, is the car with more stalls more bullish? Isn't it worth buying?
Let me first express my point of view: In fact, the more gear does not mean that the car is better, but it definitely means more expensive, and the so-called stalls are more likely to come from vendor propaganda.
There are professional eight-speed automatic transmission and four-speed transmission contrast. It can be concluded that the eight-speed automatic transmission can save fuel by 16% compared with the four-speed transmission.
From this he can say that the more gear the car has, the more fuel-efficient it is!
In fact, the more gears in the transmission, the more the engine can get the speed needed by the car at an economical speed. The advantage of this is that it can further save gasoline and reduce the emissions of automobile exhaust. This is easier to accept. What do you say?
Just now, in the experiment, a vehicle-mounted eight-speed automatic transmission contrasted with a four-speed transmission, reducing fuel consumption by up to 16% and reducing fuel consumption by 16%. The traditional concept that AT's fuel consumption was relatively high was completely broken. Inside the manual gearbox, it can also be seen that the number of gears is continuously increasing. The automatic transmission in the heavy truck has gear transmissions from the 9th gear to the 12th gear and even some 16th gears, mainly for energy saving. With the increasing popularity of automatic models, the frequency of maintenance of automatic transmissions is constantly increasing.
Industry experts pointed out that most vehicle owners are not aware of how to properly maintain and maintain automatic transmissions. Often until maintenance is required, it is found that its maintenance costs are higher than the repair of the engine. This shows that the more transmission gears are not necessarily a good thing!
Let's say that the more gear, the more fuel-efficient it is. The multi-gear design is mainly to improve the transmission's transmission efficiency and reduce carbon emissions. Therefore, relatively multi-position cars are indeed more fuel-efficient. However, the more gears, the more frequent the shift will be, and the longer the neutral time when shifting the gear. Assuming that the shift time of an ordinary AT gearbox is about 0.2 seconds, the number of shifting gears of an 8-speed gearbox may take hundreds of times, so the neutral fuel consumption is not small. Of course, these are all theoretical assumptions. BMW has conducted tests. The efficiency of 8AT is 5% to 10% higher than that of 6AT, and the efficiency of 8AT to 9AT only increases by about 1%. However, the price of the 8AT and 9AT gearboxes is much higher than that of the 6AT gearbox! How cost-effective, everyone can be clear.
Finally, Xiao Bian reminds you: Do not be blind to multi-gear transmissions. Practicality is the best.
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Application:
Heat the tea thoroughly
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Boil water
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