I saw a sketch more than ten years ago. Zhu Shimao and Chen Peisi acted in a sketch. There was a car on the grassland, the trunk was opened, and the engine was started with a rope by hand. In the end, Chen Peisi pulled the car. It was funny at the time, but this car is What drives the car?
For a car that is driven every day, the engine is under the front cover. What kind of car is this driving?
Bus, what drives the car?
The most common van, MPV is so popular, what kind of car is this driven?
First: Let’s first understand how the car is driven?
To put it simply, the fuel is ignited in a closed container, and the combustion of the fuel generates huge energy. The burst of energy pushes the piston to do work, and then drives the wheel to rotate through the transmission mechanism. Thereby, the pushed wheels make forward or reverse actions after being driven.
The driving form mainly refers to the arrangement of the engine, whether it drives two wheels or four wheels, and the position of the driving wheels. The driving wheel refers to the wheel that is directly driven by the engine to drive the car forward.
The general driving methods of today’s cars are:
Front front drive, front rear drive, center rear drive, rear rear drive, front four-wheel drive, center four-wheel drive, and rear four-wheel drive.
Second: Several driving modes of two-wheel drive vehicles.
One is front-wheel drive. This is the car we drive every day. Basically, most of them are front-wheel-drive cars, which are fuel-efficient, cheap, and the most popular.
Front means that the engine is placed in the engine compartment of the front part of the car.
Front-wheel drive means that this form of car is driven by the front wheels. At present, most cars will use this drive method. Because the engine is placed in the front and the driving wheels are also the front wheels, the driving force is in the front part of the car, and it is pulled away when driving.
The drive shaft of the front front drive vehicle is relatively short, which leads to its relatively low drive loss, which is a great advantage. Moreover, it does not have a transmission shaft passing through the compartment, so it saves a lot of space, which also makes the usable space in the compartment larger.
Rear-mounted rear-drive vehicles also have these two advantages.
The second is the front rear drive.
There are many such cars. In the past, they were only equipped with luxury cars, such as Mercedes-Benz C series, Audi, BMW, Subaru, etc. Now many domestic cars also have rear-wheel drive models, which are no longer exclusive to luxury cars. , has long been civilianized.
Front rear drive, as the name suggests, the engine is also placed in the engine compartment of the front part of the car, but the drive method has changed, it is driven by the rear wheels.
This is a relatively traditional driving method. This driving method is just the opposite of the front-wheel drive. Because the driving force is at the rear of the car, it is pushed when driving. An obvious advantage of a front-rear drive vehicle is that it has a clear division of labor, the rear wheels are responsible for driving, and the front wheels only need to do the steering task.
Therefore, the control of the front rear drive is more comfortable, and the vehicle responds more quickly when turning.
The third is a mid-mounted rear-drive car.
The most representative is the van. The engine of most vans is located under the driver’s seat, including Jinbei, which is a representative of standard mid-mounted rear-drive vehicles.
In fact, the engine is placed in the rear part of the car, behind the front axle of the car. The drive mode is also rear wheel drive. Many sports-oriented sedans will use this drive form.
There is also a formula car that uses a mid-mounted rear drive. This form is mainly to obtain the best axle load distribution, so that the handling stability is better and the driving is particularly smooth. Including many large trucks, this kind of driving method is also adopted to reduce the power of transmission loss, which is also an important part.
The fourth is a rear-mounted rear-drive car.
I won’t introduce much about this, the advantages are similar to those of the front-wheel drive.
The car of Chen Peisi and Zhu Shimao’s sketch is a rear-mounted rear-drive car, and there are buses, which basically have more rear-mounted rear-drive cars.
One disadvantage of rear-mounted rear-drive cars is that they are afraid of rear-end collisions.
Third: These types of driving forms also have their own disadvantages.
One is to take a front-wheel-drive car as an example, because the driving wheels are on the front wheels, but the front wheels also have to take care of the steering task at the same time, so it will cause the front wheels to be busy when they are working, while the corresponding rear wheels only take care of it. Just run along, it hurts to be idle.
Moreover, the weight is concentrated on the front wheels, which leads to serious wear of the front wheels.
The center of gravity is in the front. Of course, the car will be more prone to understeer when cornering.
The second is that although the four-wheel division of the front-rear drive car is relatively clear, there are also problems when cornering, because the front wheels have already performed the steering action, and the driving direction of the car has changed, but because the drive wheels still have forward inertia. , so that it is more prone to the problem of oversteer.
The third is that these steering problems generally do not occur in mid-mounted rear-drive vehicles, but because of the placement of the engine, part of the space in the cabin is occupied by mid-mounted rear-drive cars, so the space is relatively small.
And because of the position of the engine, the effect of sound insulation and heat insulation is often relatively poor, which also affects the comfort of the ride.
Editor’s comment:
One is the difference between two-wheel drive and four-wheel drive, that is, two wheels or four wheels, the form of driving ground movement, four-wheel drive is not mentioned, and four-wheel drive will be discussed in detail later.
The second is to buy a car. It doesn’t matter in the city, two-wheel drive is enough, and it is enough; buy a four-wheel drive in the northeast, Inner Mongolia, and Tibet. Because of the threat of rain and snow, the four-wheel drive can bring you a safer car. driving environment.
The third is that whether the two-wheel drive vehicle is front, middle or rear, it is a design consideration. One is power, the other is space, and the third is demand. Buying it is the result of countless experiments by experts and engineers. You can rest assured use.
Source of pictures and texts: Kuche Wuyou, official account: kuche51.
