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Dry-style double clutch and CVT were cast aside, why is the gearbox problem be “hard-hit”?

According to the statistics of the Ministry of Public Security, in 2020, my country’s motor vehicle insurance has reached 372 million, including 281 million vehicles, which also marked 2020 Chinese car ownership to the United States, and listed in the world. Behind such a large-scale car ownership, it is a product control of the product. How to after-sales rights, but also become more and more heartbeats of consumers.

This year CCTV 315 party, there are two car manufacturers being named, which are Changan Ford and Infiniti. Coincidentally, these two manufacturers are exposed due to gearbox failures.

Review CCTV 315 party car enterprises, it is not difficult to find that the gearbox problem accounted for considerable proportion in the last 315, 2013 Volkswagen DSG gearbox problem, In 2015, the Rover Range Rover Aurora Box Fault, 2020 Baojun 560 gearbox fault, plus this year’s Changan Ford and Infiniti, in the past 8 car problems of CCTV 315, the gearbox accounts for 5. Why is injured, always a gearbox?

Looking at major platforms, it can be seen that in addition to the problem of 315 exposure, many netizens in real life have encountered the quality of gearbox, of which Double clutch and CVT have a more prominent, and the dispute is the largest.

In view of the AT automatic transmission, the cost is high, the research and development is difficult, and the giants, and the giants, etc. have formed patents. The barrier, I want to bypass the patent barrier is too difficult. So many car brands will focus on double clutch and CVT gearbox.

However, there is a certain limit for the use scenario, which is existing in the AT transmission, double clutch and CVT gearbox, or precisely. The most obvious is a dry double clutch, and many years have been widely used in many years ago, but many problems have also been exploded.

Although its transmission is efficient, plusA speed, but it is prone to heat dissipation, abnormal sound, and frustration in the idle low speed. It greatly improves the probability of failure for vehicles that often use in urban congestion road sections. Therefore, many self-owned brands have abandoned dry double clutch, pushing the dual clutch, although sacrificed some shift efficiency, fuel consumption will also rise slightly, but obviously more in line with the domestic use environment.

While CVT is smooth, there is no feeling, but the steel belt drive is inevitably abrasive, and the gearbox is easy to hoard with the time of use, and these Debris is easily damaged by the elements of the oil pump, solenoid valve, and other components in the gearbox.

Additionally, with the popularity of turbocharged technology, the torque of the engine is also greater than the self-suction engine. A large defect in CVT is to match the large torque engine (the steel belt is easily slippery), and problems can be easily occurred in the case of long-term high vessels. In order to avoid such “congenital defects”, there are also many brands to switch to the steel chain to drive, and they will avoid weaknesses.

Of course, the engine and gearbox are “old partners”, both of which are interactive. If the gearbox control strategy and the engine output characteristics do not match, it is easy to fail. Especially in overseas gearboxes often do not consider domestic complicated road conditions and diverse use environments. Once the progress is not adapted to the progress of the project, the consequences are unimaginable.

Write in the last

In addition to the gearbox problem, there is still a lot of problems in the domestic automotive industry. To be honest, even though my country has become the world’s first auto big country, the supervision of the automotive industry is still very slow. For some potential problems, I believe that there will still be reporters continue to expose for consumers. With the transparency and publicity of information, Nang Ge also hopes that the manufacturer can find problems in time, proactively, and the problem, CCTV 315 is not universal, but the consumer’s eyes are bright. Welcome to “the” vehicle domain “, leave a message below, share your opinion on gearbox failure.

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