What are the four types of driving resistance in a car?
2 Answers
Car driving resistance includes rolling resistance, acceleration resistance, gradient resistance, and air resistance. The following is relevant information: Types of resistance: Among them, rolling resistance and air resistance exist under any driving conditions, while gradient resistance and acceleration resistance only exist under certain driving conditions. For example, when driving at a constant speed on a level road, there is no gradient resistance or acceleration resistance. Resistance during driving: When a car is driving at a constant speed on a level road, it must overcome rolling resistance from the ground and air resistance from the air. When a car is driving uphill on a slope, it must also overcome the component of gravity along the slope, known as gradient resistance. When a car accelerates, it also needs to overcome acceleration resistance.
My driving experience tells me that there are mainly four types of resistance encountered when a car is moving. The first is rolling resistance, which is the friction of tires rolling on the ground. For example, when I often drive on gravel roads, I feel particularly strong vibrations, the car shakes, and fuel consumption is high. The second is air resistance. When driving at high speeds, the oncoming wind feels like a wall blocking the way, affecting acceleration and fuel economy. The third is gradient resistance. When going uphill, I clearly feel the engine is under heavy load, struggling to climb, especially during mountain road trips. The fourth is acceleration resistance. When starting, the engine needs to overcome inertia to push the entire vehicle, consuming more fuel, especially on roads with frequent stops and starts. I believe maintaining proper tire pressure can reduce rolling resistance, making long-distance driving smoother. Closing windows at high speeds can reduce air resistance, saving energy and money. Next time I service my car, I will also check the vehicle more thoroughly.
