If you are not an in-depth user of Audi, you may not realize that switching from National V vehicles to National VI vehicles has changed not only the emissions of the car, but also the quattro system that Audi has always been proud of. The previous hard-connected full-time four-wheel drive with crown gear has become the current electronic timely four-wheel drive based on electronically controlled clutch plates. Some people have said that this must be Volkswagen secretly engaging in reduction of equipment. Volkswagen is really wronged this time. .
What are the differences between these two four-wheel drive systems? ?
We all know that 90% of cars and urban SUVs drive on good paved roads in cities 90% of the time. It does not require a car to have powerful four-wheel drive performance. In this case, Audi's quattro is completely a decoration, which does not play much role and increases the weight of the car.
1.? Torsen four-wheel drive is simple, reliable and not smart enough
Audi’s old Torsen four-wheel drive system is more like a manual transmission and can be adjusted according to the ratio of 4/6 Power is distributed to the front and rear axles, making daily driving more like a rear-wheel drive car. It is simple and reliable, and its transmission efficiency is also high, but it cannot play its heroic role well in most working conditions. ?Obviously for simple commuting in the city, front-wheel drive or rear-wheel drive is more efficient, so at this point, Torsen four-wheel drive is too rigid and not flexible enough.
2. Electronically controlled four-wheel drive changes the power distribution between the front and rear axles in real time, which is efficient and fuel-saving
The new electronically controlled four-wheel drive benefits from the computer’s intelligent judgment and timely changes. It can quickly change its status between a four-wheel drive and a front-wheel drive/rear-wheel drive vehicle. The most direct benefit of driving two wheels less is that it can save 0.3L of fuel per 100 kilometers. Think about the current oil price, are you very grateful to the engineer? Woolen cloth?
Actually, many people are not very concerned about Audi’s changes today.
The quattro ultra-timely four-wheel drive system was installed on the new A4L as early as 2016, and has been installed in later models. The Q5L only attracted more people's attention when it was launched. This shows that not many people care about whether it is four-wheel drive or not, let alone what form of four-wheel drive it is. Half of the people don't know that the BMW they drive is a rear-wheel drive car. Do you believe it?
At this time, the owner of the four-wheel drive Audi Q3 came forward and asked whether his car had also changed. I would like to say I am sorry. After all, the Q3 is the same transverse platform as the Golf/A3. , the four-wheel drive used on it is a Hudson four-wheel drive to be precise. Perhaps due to the cost control of the platform, this four-wheel drive system cannot achieve 100% disengagement of the front and rear axles, and at least about 5% of the power will be transmitted to The front axle or the rear axle will not be able to completely disengage, causing the friction plate to overheat for a long time, and it will not be able to withstand greater engine torque. Therefore, we can see that Audi's high-horsepower cars generally do not use this set of four drive system.
Do you want to keep the core technology in your own hands?
Another reason why Audi uses more timely four-wheel drive in new generation products is due to patent issues. Although the Torsen differential is used in Audi It is widely used on the market, but its technology patents are firmly grasped by Toyota from Japan, and the key technologies are always far behind. As Audi, which has always used breakthrough technology as its advertising slogan, naturally felt unhappy, so it immersed itself in Its own four-wheel drive system slowly began to be wired on its own models.
Sell the car first and then talk about four-wheel drive?
Of course, in order to maintain its high-end image, Audi's A8 and Q7 will continue to use the Torsen four-wheel drive system. This is A balanced strategy, under the existing policy rules, first reduce the comprehensive fuel consumption of the entire product line, and then you can continue to sell cars if the requirements are met before you can talk about feelings.
This article comes from the author of Autohome Chejiahao and does not represent the views and positions of Autohome.