On 24 July, China's National Development and Reform Commission (NDRC) and the Ministry of Finance (MOF) jointly issued a circular on ‘Several Measures on Increasing Support for Large-Scale Equipment Renewal and Consumer Goods Trade-in’, which focuses on mentioning the support for the scrapping and renewal of old operating trucks, the support for the scrapping of diesel trucks of the National III and below emission standards for the operating category, and accelerating the renewal of trucks to low-emission trucks, as well as the subsidy for the scrapping and renewal of the purchase of the compliant ones to the tune of an average of 3~8 The subsidy for the scrapping and renewal of vehicles that meet the requirements ranges from 3 to 8 million yuan per vehicle on average.
With the laws and regulations in recent years for emission standards, driving safety improvement, the industry upstream and downstream is also constantly through technological innovation and standardized management, to achieve energy saving and emission reduction of vehicles and improve safety performance. Under the policy support, it will promote the accelerated release of low-emission commercial vehicles.
Emission Standards and the State of the Commercial Vehicle Market
Since 1 July 2023, the country has officially implemented the more stringent National VI emission standard stage 6b, which prohibits the production, import and sale of vehicles that do not meet the standard.
Despite the emergence of new energy technologies, diesel engines still dominate the commercial vehicle market with their advantages of low risk, quick replenishment and support for long-distance transport.2024 From January to June, 2,138,800 multi-cylinder diesel engines were sold, of which 1,048,300 multi-cylinder diesel engines for commercial vehicles were sold, a year-on-year increase of 4.26%.
The ‘National 6b’ standard further reduces the emission limits for previous pollutants, which makes the exhaust gas treatment system of diesel engines, especially the SCR system for reducing nitrogen oxides (NOx) emissions from the exhaust gas, even more critical.
According to OBD (On-Board Diagnostics) regulations, SCR systems must enable online monitoring of insufficient urea solution carryover and dilution or replacement of the urea solution with another solution. Therefore, a high-quality quality sensor in the SCR system ensures the purity and quality of the exhaust gas treatment solution and avoids damage to the catalyst. Currently, ultrasonic measurement is the dominant technological solution on the market for detecting urea quality.
AdBlue Quality Sensors for urea detection in SCR systems use the difference in propagation speed of ultrasonic waves in different media and liquids of different concentrations for urea identification and detection of urea quality. The sensor sends out ultrasonic waves and receives the echo signal, and by calculating the round trip time of the ultrasonic waves at a fixed distance in the liquid, and comparing the time difference, it can learn the value of the difference in the concentration of the liquid, so as to judge whether it is a compliant urea or not.
Combined with matching circuitry, the product can monitor the quality of automotive urea in real time with high reliability and consistency.
High reliability and stable signal
The AdBlue Quality Sensor can maintain a stable urea concentration signal output in high and low frequency vibration environments, and can remind the driver in time whether the urea concentration in the urea tank is abnormal or not, in order to ensure that the vehicle exhaust emissions comply with the requirements of ‘National 6b’ and more stringent emission regulations.
All-metal sealing design, meet the requirements of extreme working conditions
The product adopts all-metal sealing design, the waterproof grade meets the requirements of IP68K/IPX7/IPX9K, and can meet the use conditions of various extreme working conditions of the vehicle, and has passed the reliability requirements of a number of domestic car manufacturers.
Superior performance, industry-leading
The AdBlue Quality Sensor can be compatible with the market's mainstream software solutions, the company's R & D team mastered a number of urea quality-related core technologies, the effective signal to clutter ratio of up to 6.0, product performance leading the industry level.
Good Consistency, High Quality
AUDIOWELL has passed the certification of ISO9001 and IATF16949 quality management system and implemented strictly according to the requirements of the system, with good product consistency and high quality, which meets the requirements of SCR aftertreatment system parts suppliers.
Customization and full chain of services
The probe structure of the sensor can be customized to meet customer requirements, and is compatible with a variety of urea tanks and urea sensor assemblies. AUDIOWELL provides a full chain of services, including product design, testing, and production, to meet the high-precision requirements of urea quality testing for SCR systems in commercial vehicles.
Active safety has become a must-have feature for commercial vehicles
In addition to the environmental requirements of low emissions, active safety has also become one of the ‘mandatory courses’ for commercial vehicles.
The Safety Technical Conditions for Operational Goods Vehicles proposed that, from 1 September 2020, goods vehicles with a total mass greater than 18,000kg and a maximum speed greater than 90km/h, as well as tractor-trailer vehicles, should be equipped with a lane departure alarm function and a forward collision warning function for the vehicle.
Forward Collision Warning(FCW)
The camera monitors the road conditions ahead, while the radar detects the relative distance between the vehicle and the near front, when the relative distance is less than the safety distance, it sends an alarm signal and performs sound and light alarm to remind the driver to drive at a safe distance to reduce the rear-end accidents.
Lane Departure Warning(LDW)
The camera monitors the lane line, and according to the body parameters of the whole vehicle, its built-in ECU calculates, when the wheels (without directional lights) step on the pressure of the lane line, at the same time, the radar detects the distance between the near obstacle and the vehicle, sends out an alarm signal, performs sound and light alarms to remind the driver to go back to the right direction, and reduces the number of accidents occurring in the car due to lane deviation.
After years of market verification, ‘ultrasonic radar + vision’ solution to achieve dual warning (FCW + LDW) function, has become mainstream, this multi-source perception solution to achieve higher cost-effective safety requirements of the policy, the vision part is mainly used for distant monitoring, ultrasonic radar can achieve high accuracy in the near distance detection, compensating for the camera's blind spot in monitoring spatial distance, and bringing drivers a better driving experience.
As commercial vehicle assisted driving systems are upgraded, higher standards are being set for ultrasonic sensor performance. These standards, which include longer measuring distances, greater immunity to interference, and the fulfilment of higher levels of functional safety, will accelerate the use of AK2 ultrasonic sensors as a replacement for AK1 ultrasonic sensors in commercial vehicles.
AK2 ultrasonic sensors are widely used in the ‘Park and Ride’ programme for passenger cars, and are the mainstay of ultrasonic sensors for passenger cars today.
Longer detection distance
AK2 ultrasonic sensors have a detection distance of up to 7m, providing superior distance measurement technology hardware support for intelligent driving systems.
Smaller blind zones
With a blind spot as small as 15cm, the AK2 ultrasonic sensor is able to more accurately sense obstacles in close proximity, with a measurement accuracy of up to ±2cm and a resolution of 1cm.
Frequency modulation can be coded to switch between near and far ranging
AK2 ultrasonic sensor has 8K bandwidth, support frequency modulation, so that the ultrasonic signal is not limited to a fixed frequency, greatly improving the recognition rate of the sensed signal, to avoid the same frequency interference. At the same time, the product can be achieved near and far range switching.
Refresh time<40ms, support multi-mode switching
Product bumper single detection refresh fast, refresh time<40ms; products can carry 6 sensors synchronous work, with a variety of coding settings, fixed-frequency setting conditions, the system can be based on the function of controlling the sensor work mode.
Self-diagnostic function
The product has a self-diagnostic function, which can quickly detect the signal transmission and reception in real time, ensuring that in the narrow and cramped environment can also be achieved safely ‘in the warehouse’, ‘out of the warehouse’.
Functional Safety ASIL B
The product meets the functional safety ASIL-B level requirements in accordance with the globally recognized automotive functional safety standard ISO 26262-2018, meeting the functional safety development requirements of the world's leading OEM and Tier 1.
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