A hundred schools of thought contend for a "healthy cockpit" to see which air filtration system is more reliable.

In addition to the epidemic these days, the most mentioned problem is the "mask". Masks can keep people away from germs in the simplest and most direct way, reducing the chance of getting sick. As the first choice for people to travel at present, the car is also a closed space, which needs to be clean and hygienic. ?

Therefore, during this Spring Festival, many car companies have announced that they have invested heavily in research and development on how to make cars more "healthy", which not only reflects the social responsibility of car companies in a special period, but also proves that there is room for further improvement in the "health" of cars.

At present, many car companies are trying to improve the health cockpit, such as Tesla, Volvo and other brands, as well as Geely, Roewe and Chuanqi. However, although major car companies have invested heavily in the "health" of vehicles, they all have different research directions. Which will be more reliable?

Tesla-Biochemical Protection Mode

Introduction: Tesla has HEPA high-efficiency air filtration system, which can effectively prevent viruses, bacteria and odors from entering the car.

Detailed introduction:

HEPA？ HEPA filter system consists of two parts, one is HEPA filter, and the other is to generate positive airflow in the car.

HEPA filter: The filtering effect is better than that of PM2.5 filter element. It can not only effectively filter small particles such as dust and bacteria, but also effectively filter water droplets and aerosols attached to COVID-19, effectively blocking the invasion of COVID-19.

Create positive pressure airflow in the car: turn on the "biological weapon defense mode" of air conditioner, at this time, the air volume reaches the maximum, and constantly blow into the car, thus forming positive pressure in the car and blocking the entry of outside air. While keeping the air in the car fresh, it can still keep the new coronary pneumonia out and provide a safe environment for the owner.

Comments and analysis: It is only a simple HEPA filter, and the protection effect may be relatively general, but if the car is equipped with positive airflow, the protection level will be improved a lot. However, HEPA filters are also graded and need to be replaced after a long time. Although Tesla uses a highly protective filter, it is still necessary to pay attention to cleaning the HEPA filter frequently.

Nezha U-shaped negative ion filtration system

Introduction: Nezha U, a brand-new model of Nezha Automobile, will be equipped with N95 filtration system as standard, which can effectively prevent the odor from entering the car.

Detailed introduction:

Nezha u is cleaned by using negative ion air purification system? Air? PM2.5 air purification system, to achieve the air purification level of N95 in the car.

Negative ion air purification system: Negative ion air purifier has always been a must-have product for many families. It can make the space full of negative ions and meet with droplets or aerosols in the air to achieve the effect of adsorption and sedimentation. And these two are also the most common carriers of the virus.

Clean? Air? PM2.5 air purification system: It can effectively filter fine particles with a diameter less than or equal to 2.5 microns (PM2.5) in the air.

According to the official statement of Nezha Automobile, the on-board filtration system of Nezha U meets the N95 filtration standard and has no influence on the aerodynamic diameter ≥0.3? The particle filtration efficiency of M is above 95%.

Comments and analysis: Although the negative ion air purification system seems to be full of gimmicks, whether the car purifier can make the negative ion concentration achieve the effect of purifying the air also needs to be questioned. If the negative ion purifier can't achieve the real effect, then Nezha U is just a model with protection for PM2.5.

Geely Automobile -CN95 Automobile Air Filter Regulations

Introduction: By installing air-conditioning filter elements conforming to CN95 certification, the air quality inside the car can be guaranteed.

Detailed introduction:

CN95 filter element: The filter element developed with new materials with smaller pore size, such as activated carbon, high-efficiency non-woven fabric and multi-layer composite media, has a filtering efficiency of over 95% for particles with a diameter of 0.3m, and 98% for droplets usually larger than 0.74m adsorbed by COVID-19, reaching the filtering effect of N95 mask.

Comments and analysis: During the epidemic, many car companies began to work hard on air-conditioning filter elements, and some companies quickly launched the "air-conditioning filter element evaluation service", which is the case with "CN95 certification of automobile regulations". In addition to Geely Automobile, the new filter elements of FAW, Changan, Volvo, BAIC and BYD have also passed the certification.

Let's not say that this "certification" is not reliable. It is said that the use of air conditioning filter element is only a short-term thing, but a long-term thing. Even the N95 mask can only be worn for a few days. How often should the air conditioning filter element conforming to CN95 be replaced?

Jietu-electrostatic activated carbon filter

Introduction: Jietu is currently replacing the electrostatic activated carbon double-effect filter for vehicles free of charge, which can further improve the filtering effect of vehicles on bacteria and particles.

Detailed introduction:

Electrostatic activated carbon double-effect filter: combines the advantages of electrostatic filter and activated carbon filter. Particles are charged by high-voltage electrostatic field, and then collected by dust collecting plate. Impurities such as particles in the air can also be removed by activated carbon with adsorption capacity.

Vehicle-mounted negative ion generator: By generating a large number of negative ions and trace ozone, it absorbs harmful particles, bacteria, droplets and aerosols attached to the virus in the car and has a certain killing effect on the virus.

Comments and analysis: both static electricity and activated carbon have strong adsorption. After adopting electrostatic activated carbon double-effect filter, the safety protection of Jiewei vehicles will definitely be improved. However, it is still a cliche. Activated carbon only absorbs bacteria, so the filter element should be replaced frequently. Secondly, if the content of negative ions does not reach a certain index, the inhibition of germs is not obvious. If these can be guaranteed, then the health inside the car will be even more reassuring.

GAC New Energy-Chinese Medicine Xiang

Introduction: By combining China traditional medicine with modern automobile technology, we can keep the interior space healthy.

Detailed introduction:

On-board Chinese medicine fragrance health care technology: The combination of Chinese medicine and fragrance can make the fragrance originally only enhance the style inside the car, but also bring users a richer travel experience from a health perspective.

It is worth noting that the traditional Chinese medicine incense of GAC New Energy will be the first to be carried on the SUV? Eternal tower? LX, and provides Cao Fang, Cangwu, Canghai, Xing Fei, Taoyuan and Nanshan.

Comment and analysis: Without understanding the principle, we can't judge whether this traditional Chinese medicine fragrance is reliable. But to be honest, I personally look forward to its taste.

SAIC roewe-active purification health cabin

Brief introduction: UVC deep ultraviolet disinfection system is integrated into automobile air conditioning, which makes automobile air conditioning have medical-grade disinfection and sterilization protection effects.

Detailed introduction:

Recently, SAIC Roewe began to provide after-sales installation of ultraviolet air conditioners for the vehicles it sells, so as to comprehensively improve the health and quality of the vehicles.

PM2.5 high-efficiency vehicle air conditioning filter element: This configuration is basically installed on the main sales models of SAIC Roewe, which can effectively filter fine particles with a diameter greater than 2.5 microns (PM2.5) in the air.

PM2.5 Independent Air Purifier: In addition to the air conditioning filter, SAIC Roewe's products also have an independent air purifier in the car, which can automatically turn on and actively absorb and block particulate matter in the air when poor air quality in the car is detected.

UVC deep ultraviolet disinfection system: Similar to the ultraviolet disinfection in hospitals, SAIC Roewe uses the built-in black box layout of car air conditioners to disinfect air conditioning filter elements through ultraviolet rays. According to the official, the UVC deep ultraviolet disinfection system can complete disinfection within 90 seconds at the earliest.

Comments and analysis: It is very effective to ensure the protective function of air conditioning filter screen through ultraviolet disinfection. Long-term ultraviolet radiation will destroy the cell structure, remove the bacteria and other foreign bodies left on the filter element of automobile air conditioner in time, and prolong the service life of the filter element.

Generally speaking, it takes more than half an hour to achieve the best effect with ultraviolet sterilization in hospitals. Because SAIC Roewe's UVC deep ultraviolet disinfection system is hidden inside, the owner can use this function to disinfect the filter element during travel. In addition, SAIC has also introduced a portable ultraviolet lamp in the car, which supports Bluetooth control and can be used for more than an hour after charging. That makes sense. Personally, I think this lamp may be more reliable.

Tucki G3- High Temperature Bacteriostasis Function

Introduction: After upgrading OTA, you can remotely control the air conditioner in the car through the mobile APP, and sterilize the car at high temperature for a long time to inhibit the bacteria in the car.

Detailed introduction:

The function of "high-temperature bacteriostasis" introduced by Tucki this time is mainly to make the air conditioner circulate in the car with high air volume for 60 minutes, and the outlet temperature is 56℃. /kloc-more than 0/00 times of air internal circulation and 56℃ long-term high temperature air outlet to ensure the antibacterial effect in the car.

Due to the long cycle time, the owner can remotely control it with one button through the mobile App. After the bacteriostatic work is completed, wait for 30 minutes before getting on the bus.

Comments and analysis: As early as the beginning of the epidemic, some experts pointed out that high temperature can be disinfected for a long time, and the "high temperature bacteriostasis" function launched by Xpeng Motors this time came from this. Although the air temperature of the air conditioner has reached 56℃, it does not mean that the temperature inside the car can be stabilized at 56℃. However, in the case of high temperature, Xpeng Motors still uses internal air circulation to heat and filter the air inside the car. From this point of view, the high-temperature antibacterial function of Xpeng motor is very reliable. Moreover, when the car is subjected to high temperature treatment, the air conditioning filter element can also be cleaned by the way. Of course, be careful not to put things that are not resistant to high temperature in the car.

Looking at the current mainstream car epidemic prevention mode, in addition to improving the air conditioning filter in the car at first, car companies are now beginning to consider how to further inhibit or even eliminate germs under the premise of protection. Some use negative ions, and some use ultraviolet rays.

Indeed, some experts say that the vehicle is not a completely closed space, and it is not enough to improve the air conditioning filter. All kinds of gaps and getting on and off the bus will lead to the so-called "N95 class" protection failure. Therefore, the author believes that car owners should not only pay attention to protection in the car, but also need an active sterilization method to further inhibit the virus and give people a more reliable feeling.

This article comes from car home, the author of the car manufacturer, and does not represent car home's position.