What factors do you consider when choosing a car? Exterior, interior, power or price? I believe that these are the focus of most friends' investigation. But when it comes to the driving experience, there is actually one more important point that is often overlooked by us, that is, the sound insulation and noise reduction performance of the car.
In the process of vehicle driving, wind noise, road noise and various environmental noise are inevitable, and the intrusion of noise not only destroys the travel mood, but also seriously affects the driving judgment. Therefore, excellent car sound insulation and noise reduction performance can not only make the driving experience more comfortable, but also make driving safer. At present, in the domestic mid-to-high-end automobile market, there is such a car that has been praised by the industry and recognized by consumers with its quiet advantage - Tianlai 2021 model.
Higher than the noise reduction strength of the national standard, the "Quiet Star" is well deserved
When it comes to natural sounds, most people's first impression is "moving large sofas". But in addition to the standard comfort, Tianlai also has an excellent quiet gene, as early as the second generation of demeanor began to enjoy the reputation of "global silent king", and has always retained this advantage to this day.
Recently, Tianlai's quiet advantage has once again been recognized by authoritative institutions, and with a number of achievements exceeding the highest level of certification A-level standards, it has been awarded the "Quiet Star" certification certificate issued by the China Automobile Research Hwaseong Certification Center, becoming the first model in the joint venture B-class sedan to receive this honor.
The "Quiet Star" certification test of China Automobile Research Institute takes the national standard as the benchmark, uses more stringent test methods and more dimensions of evaluation standards, and simulates the internal and external noise environment of the vehicle through the laboratory, and comprehensively tests the quiet level of the whole vehicle. In the vehicle sound insulation measurement, the performance of the Tianlai 2021 model in the noise perception point that consumers are most concerned about - the external ear point of the main and co-pilot drivers has exceeded the highest certification rating; and in the vehicle noise transfer function test, the sound source sensitivity index of key parts such as the front cabin and exhaust pipe has also reached the highest level of certification.
It is worth noting that since this test is a static test and does not involve vehicle start and active noise reduction function intervention, only a 2021 Tianlai 2.0L XL Comfort Edition model (sub-low version) participated in this test, which also reflects dongfeng Nissan's sincerity in terms of tranquility.
If the simple certification test is not enough for you to intuitively understand the quiet strength of the Tianlai 2021 model, then winning the annual comprehensive championship of the large and medium-sized sedan group in the CCPC China Mass Production Car Performance Competition, in last year's sound insulation and noise reduction competition, pressing many luxury models such as Mercedes-Benz BMW, and winning the full quiet championship may be more telling.
A number of silent black technology blessings to create a full-dimensional silent cockpit
The excellent quiet results of the Tianlai 2021 model are inseparable from Nissan's long-term accumulation and continuous exploration in the NVH project. Taking the material as an example, the top, bottom, front circumference and other positions of Tianlai are innovative to use double-layer sound insulation cotton materials, while the sheet metal parts that are prone to vibration are added to damping pads to suppress vibration, and the material is the most used in the Japanese product brand, which maximizes the barrier and absorption of noise inside and outside the car. This is also the core element of the highest rating of the sound source sensitivity index of key parts such as the front cabin and exhaust pipe.
In addition, the front windshield and front side window glass are also equipped with double-layer sound insulation glass as standard, and through the three-layer extrusion technology, the polymer PVB film interlayer effectively absorbs noise and reduces the influence of the external environment on the cockpit. Measured by the authoritative agency, the driver's external ear measurement point coefficient is 3090, and the co-driver's external ear measurement point coefficient is 3094, which is higher than the highest rating standard (the single point noise reduction coefficient of sound insulation is greater than or equal to 3000 is the highest A level), which fully guarantees the comfortable driving experience of the main and co-driver position.
Blocking external noise is only a routine operation, the medium and high-end and above version of the Tianlai model is also equipped with ANC active noise reduction system, which can detect the engine and environmental noise in real time through the microphone in the car, and issue a "command" to the speaker in the car in a timely manner, so that the speaker emits the reverse sound wave of the same frequency, thereby actively canceling out the noise during the vehicle.
For noise caused by engine vibration conduction, Tianlai 2021 model uses atR active torque tie rod system to monitor engine vibration through electronic unit control, actively generate reverse vibration, prevent engine noise and vibration from being transmitted to the car through the subframe, thereby making the car's tranquility to a higher level.
Many years ago, someone once commented on the tranquility of tianlai: a needle fell on the carpet of tianlai, and you could hear it.
Years later, The Tianlai 2021 model proves with strength that its quiet performance is still "able to play", and the technology is becoming more and more exquisite, coupled with the comfortable Multi-Layer ergonomic seat like a large sofa, the high-transmitting EYE MAX panoramic sunroof and the hall-level 9-speaker BOSE sound system, which may be the most typical expression of Japanese comfort.