Is the quality of domestic Yamaha scooter good?
Yamaha is made in China. There are four kinds of scooters: Patrol Eagle/KOOC-0/25, Saiying Eagle/KOOC-0/25, Fuxi/KOOC-0/25 and Qiaoge/KOOC-0/25. Although these four models have different shapes and positioning, they all have one common feature, that is, they are equipped with the same engine.
The main advantages of these models are also concentrated in this powertrain. One of the biggest advantages of this powertrain, which Yamaha calls blue core and innovative technology, is its durability, sufficient power and low fuel consumption.
The actual displacement of this engine is 125ml, the compression ratio is 1 1.0: 1, the maximum power is 6. 1KW, and the maximum torque is 9.7N.m The book data of this engine is quite good in the same displacement model, basically at the upper-middle level. However, due to the transmission system, there will be obvious jitter when starting, so the power transmission process of the engine will be slightly inferior to other Japanese cars, but according to the engine's
However, the external performance of these Yamaha models will not be so perfect. No matter how their appearance changes, how innovative the positioning of the models is, and how to deal with the details in front of users, it is just the right level. Even these high-end Eagle Patrol 125 are at this level, because the positioning reasons have not changed much. This kind of performance makes them lose points in similar models, which will be a bit inconsistent with the identity of joint venture brands.
In a word, the engine stability and performance of Yamaha scooter are ok, which fully conforms to the technical strength and brand guarantee of the joint venture brand. But the external details will be almost meaningless, and there is still room for improvement. But even so, under the premise of paying attention to practicality, their performance is still worth choosing, but the grade sense of the models will be worse and the ride performance will not be so absolutely balanced.
Reasons for domestic full-time four-wheel drive and imported timely four-wheel drive
If you are not a deep user of Audi, you may not notice that switching from the national five car to the national six car not only changes the emissions of the car, but also changes the quattro system that Audi has always been proud of. From the rigid connection between full-time four-wheel drive and crown gear, it has become an electronic timely four-wheel drive based on electronic clutch plate. Some people say that the public must be secretly cutting prices, and this time the public is really embarrassed.
What's the difference between these two four-wheel drive systems? ?
As we all know, 90% of cars and urban SUVs are spent on well-paved roads in cities, and it does not need the powerful four-wheel drive performance that a car should have. In this case, Audi's quattro has completely become a decoration, which has not played much role and increased the self-weight of the car.
1.Toson four-wheel drive is simple and reliable, not smart enough.
Audi's old Toson four-wheel drive system is more like a manual gearbox, which can distribute the power of the front and rear axles in a ratio of 4/6, and daily driving is more like rear-wheel drive. It is simple and reliable with high transmission efficiency, but it can't play its heroic role well in most working conditions. Obviously, simple commuting, front-wheel drive or rear-wheel drive is more efficient in cities, so in this respect, Tuosen four-wheel drive is too rigid and inflexible.
2. The electric four-wheel drive changes the power distribution of the front and rear axles in real time, which is efficient and fuel-efficient.
The brand-new electronically controlled four-wheel drive, thanks to the intelligent judgment and timely replacement of the computer, can quickly switch identities between four-wheel drive and front/rear drive. The most direct benefit of driving less than two rounds is that you can save 0.3L fuel per 100 kilometers. Think about the current oil price. Do you thank the engineer?
In fact, many people are not very concerned about the changes in Audi today?
At this time, the owner of the four-wheel drive Audi Q3 stood up and said that his car had been changed. I'm sorry to be here. Q3 and Golf /A3 are the same platform. The four-wheel drive used above is Hande four-wheel drive, which may be due to the cost control of the platform. This four-wheel drive system can't realize the separation of the front and rear axles 100%, and at least about 5% of the power will be transmitted to the front and rear axles. In this case, the friction plate will overheat for a long time because it can't come out completely, and it can't bear more engine torque, so we can see that Audi's high-powered cars generally don't use this four-wheel drive system.
The core technology should be in your own hands?
Another reason why Audi uses timely four-wheel drive more in the new generation of products is the patent issue. Although TOSON differential is widely used in Audi, its technical patent is firmly grasped by Toyota from Japan, and the key technology is always out of breath. Audi, which has been advertising breakthrough technology, was naturally unhappy, so it buried itself in the four-wheel drive system and slowly began to line up its own models.
Sell cars first and then talk about four-wheel drive feelings?
Of course, in order to maintain their high-end image, Audi A8 and Q7 will continue to use TOSON four-wheel drive system, which is a trade-off strategy. Under the existing policies and rules, we must first reduce the comprehensive fuel consumption of the whole series of products, and then we can continue to sell cars when we meet the requirements and talk about our feelings.
Is the quality of domestic Yamaha scooter good @20 19