What is the climbing angle of the car? What car has the largest climbing angle?

Many people talk about the climbing ability of a car. They often say that a certain model has strong climbing ability and can even climb a slope of 70 degrees or 90 degrees. In film and television dramas, you will also see the lens of cars on the wall. So does the car really have such a strong climbing ability? What is the maximum slope that a car can climb? Let's analyze this problem.

The maximum climbing degree of a car refers to the maximum slope that a car can overcome with the first gear on a good road when it is fully loaded. It represents the climbing ability of the car and is one of the indexes to evaluate the dynamic performance of the car. Let's take a look at the design climbing ability of common models:

1. car: the maximum grade of ordinary cars is about 32%, and some four-wheel drive models can be higher, but limited by the body geometry, few of them exceed 40%. (The inclination angle is about 22).

2. Two-wheel drive city SUV: I can tell you with great certainty that the climbing ability of two-wheel drive city SUV is not as good as that of cars. If you want to buy a city SUV to go cross-country, you will be disappointed and the consequences will be tragic. For example, the maximum gradient of Toyota Highlander and Honda CRV is only about 28%, while the maximum gradient of most other two-wheel drive SUVs is about 30%. (The inclination angle is about 20).

3, four-wheel drive city SUV: four-wheel drive city SUV climbs better, and some can reach 40%. For example, Nissan's Qi Jun has the best climbing ability among SUVs in these cities, with a maximum climbing degree of 46.6%. (The inclination angle is about 25).

4. Off-road vehicle: Off-road vehicle has strong climbing ability, and can climb a slope close to 100% at most. For example, Mercedes-Benz G-Class, Touareg and Land Rover Defender can climb 100%, Audi Q7, Porsche Cayenne, Nissan Toure, Toyota Land Patrol and Prado can overcome about 80%, and others like Pajero, Grand Cherokee, BMW X5, herdsman, Hummer H2 and Jimny can overcome more than 60%. (The inclination angle is about 45 degrees)

5. Ordinary trucks: Ordinary trucks can easily climb the slope of 10%, and the maximum can climb about 30%. (The inclination angle is about 20).

6. Off-road trucks: Ordinary 4x4 military off-road vehicles can climb up to 60% of the slope. Tetora made in Czech Republic, with 6*6 all-wheel drive, full pontoon and four differential locks at the front, middle and rear, is the most powerful off-road truck in the world and is known as the king of off-road. It can overcome the slope of about 90%, and no one in the world can shake its position so far. Unfortunately, it has been discontinued now. Many countries in the Middle East use it as a military vehicle to pull guns. (The inclination angle is about 40).

But no car can overcome the slope above 100%, that is, the slope angle is greater than 45. This is the physical limit of a car.

Some people will say: Lao Hou, what you said is wrong. My sales consultant told me that I can climb a big slope of more than 40 degrees! I tell you, you were fooled by the sales consultant, who intentionally (or unwittingly) confused the two concepts of slope and slope angle.

Slope refers to the ratio of the height of the slope to the horizontal distance. Generally expressed as a percentage, it can also be expressed as a decimal. Note: It is a ratio, and there is no unit. The angle of the slope refers to the included angle between the road surface of the slope and the horizontal plane, and the unit is ().

For example, if the slope of a road is 30%, the vertical height will actually increase by 30 meters every time the horizontal distance advances 100 meters, but the angle of this road is16 42 ",not 30. The slope is 100% and the slope angle is 45. The following figure is the comparison table of slope and slope angle.

The gradient of urban roads is generally less than 5%, and it is steep when it exceeds 10%. The design speed is 120, and its slope generally cannot exceed 5%. The slope of "Devil's Highway" in Yunnan is over 8%, so accidents occur frequently. Our underground parking lot looks steep. In fact, the designed slope is only about 15%, which is about 8.6 when converted into an angle.

The main factors that affect the maximum gradeability are the torque of the engine, the adhesion between the tire and the ground, the approach angle of the car and the departure angle. Generally, off-road vehicles use large-displacement naturally aspirated engines, and off-road tires have short front and rear suspensions, just to improve climbing ability.