Home    Industry News    Smart "active air grille" hot car cooling

Smart "active air grille" hot car cooling

Hits: 3890641 2020-03-26

The engine temperature control technology has always been the focus of the research of the major car manufacturers. The higher the temperature resistance of the engine means that more heat energy can be converted into mechanical energy, that is to improve the thermal efficiency. However, due to the limitation of materials, the thermal efficiency cannot be improved in a short period of time, so most manufacturers focus on the heat dissipation and heat preservation technology of engine. To put it plainly, it is our topic today: intelligent active air intake grille.
I heard for the first time that this technology is on the C-class model of Mercedes Benz. Many people have seen the C-class model parked on the side of the road. The front grille is sealed. The same car running on the road becomes the grille open again. In fact, this is an energy-saving technology, which can be called a breathing air intake grille. The normal working temperature of most engines is 90 ° - 100 °. When the vehicle is just started, it cannot reach the normal working temperature directly. The engine will increase the fuel injection quantity to make the vehicle quickly enter the normal working temperature. That's why the idle speed of the car is a little higher than usual when it's just started. The engine will use more fuel than usual at this time. But no one has the ability to keep the engine hot from the start, and it's worth it. So what we can do is to shorten the time of cold start, that is to let the engine enter the normal working temperature more quickly. The way the engineers came up with was to keep the engine warm.
In front of the engine car, the back of the grille is directly exposed to the water tank that heats the engine. Usually, when the car is driven forward normally, the cold air will enter the engine room through the grille to help the water tank dissipate heat. This is essential when driving normally, otherwise the engine will be damaged due to overheating. But the engine doesn't need cooling when it's cold started. Isn't the cooling system helpful? In order to solve this problem, the intelligent active air intake grille came into being. The intelligent grille is controlled by the computer to open and close. The computer uses the temperature sensor to identify whether the engine needs heat dissipation. When the engine compartment does not need heat dissipation, the computer can control the grille to close. When the vehicle is cold started, closing the grille can help the engine to reach the operating temperature quickly. When the engine compartment needs heat dissipation, the grille can be opened intelligently to let the cold air cool the engine.
The same system is not only available for Mercedes Benz C-class cars, but also for BMW, which emphasizes aerodynamics. BMW has always been famous for sports, even the 7 series of large luxury cars. In terms of wind resistance coefficient, 40% passes through the body, 20% passes through the chassis, 30% passes through the wheel and wheel arch, and 10% passes through the functional aperture. Because the basic shape of the vehicle design has been determined to a large extent, and the chassis has been completely covered, the functional aperture is the most effective optimization area. The purpose of its application is to cover the functional aperture and reduce the wind resistance coefficient. When the car does not need to cool the air flow, it will electronically close the vent on the radiator grille, thus reducing the air flow into the engine compartment. It not only optimizes the aerodynamics, but also reduces the fuel consumption. For every 10% reduction of the drag coefficient, the fuel consumption can be saved about 7%.
According to the principle of intelligent active air intake grille, this technology is not high-tech, nor high-end thing, nor any cost problem. So tens of thousands of yuan of Baojun 510 have applications. Baojun 510's intelligent active air intake grille (electric louver) is a surprise, also known as the "active cooling" function. When the cold car is started, the louver is closed to let the water tank warm up quickly. After the hot car, the louver is opened to let the air flow quickly and dissipate heat.
The front face of the new brilliance BMW 325li adopts the design of double kidney type active air intake grille, while the difference between the model and the Yao night version is that the air intake grille is surrounded by Silver Chrome Plated decorative strips, while the Yao night version is surrounded by smoke.
Dongfeng Nissan's 14th generation Xuanyi takes apart the skin of its front face to reveal its basic structure. The top is the buffer layer of anti-collision beam, which is different from common foam. Sylphy uses plastic material, and the effect is similar to foam. We can see that the front cooling device of Xuanyi uses the active cooling device. When the vehicle is cold started, the louver is closed, which makes the engine quickly warm up. When the temperature reaches the working value, the louver is opened and the normal cooling is achieved. Summary: the intelligent active grille can help the engine keep warm and reduce the wind resistance coefficient. It can be opened when necessary and closed when not needed. The computer control doesn't need your worry at all. Most importantly, this function can indirectly save fuel, protect the engine and reduce cold start wear.

Online QQ Service, Click here

QQ Service

Wechat Service