In recent years, we have made remarkable achievements in environmental remediation, including cars that were once a major polluter. This is by no means nonsense, just look at the speed of iteration of motor vehicle pollutant emission standards over the years. In 1999, Beijing began to implement the National 1 standard, in 2004 the national implementation of the National 2 emission standard, in 2007 the national implementation of the National 3 standard... Now it is the world's most stringent national 6b standard.
It would not be an exaggeration to describe our standard upgrades as fast and wide. Take the difference between China 6a as a transitional stage and the current Country 6b (see the table below for details), and it is unprecedented to achieve such a large-span upgrade in a short period of time.
Automotive ternary catalytic converter
The upgrade of standards requires the support of technology. As we all know, in the past, the reduction of vehicle pollutant emissions relied on three-way catalytic converters, and by the stage of China 6b, it has been unable to meet more stringent standards. As a result, many car companies have applied particle trapper technology. However, as a technology-intensive product, the application of a new technology will inevitably have some "defects".
It is said that the recent increase in fuel consumption of the National 6b version of the Tiguan L 330 model is related to the particle trap. So, is the increase in fuel consumption related to particle traps, and what are the specific reasons? What is the solution to the problem? With these questions in mind, we communicated with saic-volkswagen personnel.
Question 1: Is the increase in fuel consumption of the National 6 version of tiguan L 330 related to the particle trap, and what is the specific reason?
SAIC Volkswagen said that there are many factors that affect the fuel consumption and power of the vehicle, such as the vehicle itself, the use environment, driving conditions, driving habits and so on. After receiving feedback from the owner, SAIC Volkswagen conducted an in-depth analysis of the problem and found that the reason for the increased fuel consumption was related to the working principle of the particle trap.
Automotive particle trappers
As we all know, the particle trap will continue to capture carbon particles in the exhaust gas during the work process, according to the amount of particulate matter accumulation for the corresponding level of regeneration and the need for periodic regeneration, and this regeneration process requires a high temperature and oxygen-rich environment. Then, in order to improve the exhaust temperature of the engine, the ignition angle of the engine is relatively backward, generally after the compression of the upper stop point, the engine work efficiency will be reduced, and the fuel consumption will increase to a certain extent. However, under normal urban conditions, the regeneration program can be activated, and the fuel consumption will return to normal after the regeneration process is completed.
Question two: What is the solution to this problem?
SAIC Volkswagen said that since receiving the feedback from the first batch of car owners, SAIC Volkswagen has attached great importance to this problem, and immediately organized a technical team to carry out a comprehensive and in-depth technical analysis to confirm the cause of the problem, and has been actively developing practical solutions.
At present, SAIC Volkswagen has provided a set of technical solutions including relevant software optimization and corresponding supporting hardware adjustments for car owners affected by this, so that they can quickly and stably complete regeneration under frequent stop-and-go, long-term short-distance driving and low-temperature working conditions. After the end of the regeneration process, the fuel consumption will return to normal.
Question 3: At present, some car owners have reported that there is still a problem of increasing fuel consumption after upgrading the service, does SAIC Volkswagen have the next solution?
SAIC Volkswagen said that depending on the driving conditions of the vehicle, the active regeneration frequency and regeneration duration of the particle trap will vary.
Through proactive market monitoring, SAIC Volkswagen found that a small number of customers still reported that they encountered regeneration difficulties under extreme working conditions (such as frequent short-distance driving, etc.) after the upgrade. In order to better meet the needs of these customers, SAIC Volkswagen is conducting technical analysis and developing more complete solutions as soon as possible.
Question 4: When will the next plan be introduced?
Edit the point of view
Although the increase in fuel consumption caused by the particle trap, some users may have some doubts about Tiguan L and SAIC Volkswagen, but from another point of view, this is also a test of saic's sense of responsibility for SAIC Volkswagen users, whether they can face the problem, attach importance to the problem, find ways to solve the problem, and truly practice the consumer-centric service purpose is particularly important, only the car company has a sense of responsibility, the user has confidence in the car company, in order to create a benign automobile market.