Many riders are very excited when they hear that it is a four-wheel drive. They must buy a four-wheel drive. This is the idea of the most perfectionists. Four-wheel drive has many advantages, but also has many disadvantages. Slightly more experienced riders know that four-wheel drive is divided into full-time four-wheel drive, part-time four-wheel drive, and timely four-wheel drive.
First: What is a timely four-wheel drive?
One feature of the timely four-wheel drive is that it detects that the rear wheels are slipping or the front wheels are slipping. We assume that this car is a front-wheel drive vehicle, and then it is a timely four-wheel drive. When the front wheels are slipping, it will transmit power to the rear wheels. , This is called timely four-wheel drive. That is, it will only be converted to four-wheel drive when appropriate, and in other cases it will still be a two-wheel drive drive system. The system will automatically switch to two-wheel drive or four-wheel drive mode according to the driving conditions of the vehicle without manual operation.
To put it in a simple way, when the front wheels slip, the rear wheels are automatically sensed, and the four-wheel drive is implemented, usually only two-wheel drive. Timely four-wheel drive, generally, front four-wheel drive, that is to say, usually front-wheel drive.
Second: Under what circumstances is the timely four-wheel drive useful?
One is the snow. On snowy days in the north, there is a little bit of ice and snow, and the front wheels will really slip. At this time, the timely four-wheel drive is very, very effective, and the front wheel slip is transmitted.
The second is muddy road conditions. Some muddy roads, such as going to Tibet, take 318 and there are many road repairs. When it rains, it will be very muddy, and the front and rear wheels will slip, which will help.
The third is that it fell into the well cover. Many riders have no experience of falling into the manhole cover when driving. If they fall into the manhole cover and the clutch slips, there will be an unpleasant smell of smoke. At this time, the four-wheel drive will also start.
Third: Is the timely four-wheel drive less stable than the two-wheel drive?
A car friend bought a car, and an old driver said that the timely four-wheel drive will turn on the four-wheel drive mode in small bumps, turns, uphill and other situations, so the grip and stability are not as good as the two-wheel drive. Four-wheel drive is to transmit power to the wheels with adhesion when the wheels slip to ensure the normal driving of the vehicle.
Under what road conditions can small bumps, turns, and uphills cause the front wheels to slip? If the power is transmitted to the rear wheels in the snow, the vehicle will not deviate. Coupled with vehicle assistance systems such as TCS/ESP/ABS, it is very stable. So it doesn’t work, it’s still two-wheel drive without skidding. Four-wheel drive in snowy weather is still very useful. For northern car lovers, it is recommended to buy a timely four-wheel drive.
Summarize:
One is that car lovers in the south don’t need to buy a real-time four-wheel drive when driving in the city. Why? There is a lot of heavy rain in the south, and it is impossible for you to drive until the front wheels are spinning, so its four-wheel drive may not work at this time.
The second is whether all four-wheel drive vehicles are so beautiful. Of course, timely four-wheel drive is still very beautiful. Four-wheel drive is very fuel-intensive, and some large SUVs are gas-eating machines. Four-wheel drive is very fuel-efficient, and it can resist wet and slippery road conditions, so why not do it?
Source of pictures and texts: Kuche Wuyou, WeChat (QQ) public account: kuche51.
