Although the price of oil is not something we can decide, we can decide which car we want to buy, in addition to the fuel-saving technologies we often hear about engines such as direct injection in the cylinder, turbocharged, high compression ratio, etc. The Cummins Cylinder Head Manufacturer is telling you a few car fuel-saving technologies that you usually don't pay attention to, and see if you are also fooled by the manufacturers.
First, the body lightweight
Lightweight, direct injection in the cylinder, turbocharged, car engine
The lightweight of the car is to reduce the car's curb quality as much as possible while ensuring the strength and safety performance of the car, thereby improving the car's power, reducing fuel consumption and reducing exhaust pollution. Car quality is cut in half and fuel consumption is reduced by nearly half. Due to the need for environmental protection and energy conservation, the lightweight of automobiles has become the trend of world automobile development.
In fact, the lightweight body is simply to reduce the body quality. We often hear reports that some luxury cars use an all-aluminum body, which is a way to achieve lightweight. Therefore, when we choose a car, it is best to check the car's body structure and steel strength to determine whether the car is safe and fuel efficient.
Second, the drag coefficient
Lightweight, direct injection in the cylinder, turbocharged, car engine
The drag coefficient is a mathematical parameter determined by wind tunnel experiments and sliding experiments. It can be used to calculate the air resistance of a car while driving. The size of the drag coefficient depends on the shape of the car. The greater the drag coefficient, the greater the air resistance. It is known that the rain resistance coefficient of raindrops is the smallest, around 0.05.
Another factor determining the fuel consumption is the drag coefficient. Why is the SUV expensive? It is because he has a large windward area, that is, the drag coefficient is large, so we can first understand the wind resistance of these cars when buying the same type of car. The coefficient can know which car is more fuel efficient.
Third, the size of the tire
As the only part that comes into contact with the ground, the tire has a close relationship with the fuel consumption of the vehicle. Generally, the larger the tire, the higher the fuel consumption. This is because the larger the contact area between the tire and the ground, the larger the friction area. The greater the resistance, the slower the vehicle accelerates, resulting in higher fuel consumption. Now, our pursuit of safety and practicality is much lower than that of paying attention to aesthetics. Many auto companies have also seized the hearts of consumers. They have installed four “big feet” on the vehicles, and the fuel consumption is not high. It’s strange.
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