Last winter, the weather was particularly cold, but the auto market was very lively. Manufacturers were still enthusiastic about launching new cars. However, there are still some riders' voices, and some CR-V riders report that their car's motor oil level rises, especially in the northeast and northwest of the winter when the temperature can fall below minus 20 degrees. In the impression of many riders, the engine has problems such as burning oil, cold start-up jitter, abnormal sound, etc. However, the phenomenon of increased oil consumption is very ambiguous and some are at a loss.

As time passed, because there was no authoritative explanation to eliminate the worries of riders, and various sounds came up one after another, the issue of engine oil became a hot topic for discussion among riders. Fortunately, this did not last long, and the manufacturers who got feedback from the riders noticed the problem in time and gave a reply. After discussions and studies were passed on February 12, manufacturers announced the recall of approximately 350,000 vehicles that may have this problem. The manufacturer will perform a free ECU upgrade on the recalled vehicle to alleviate the problem of higher engine oil in the 1.5T engine, and add a tick mark on the upper line of the oil gauge to identify if the oil exceeds the reasonable range of increase. At the same time, in order to eliminate the owner's concerns, Dongfeng Honda will extend the engine warranty to 6 years or 200,000 kilometers for the new CR-V, 10th generation Civic, New Jedd, and UR-V models equipped with 1.5T engines.

This is not yet finished. Based on the protection of the rights of consumers, Dongfeng Honda announced on March 1 that it will stop selling its new CR-V 1.5T models and only accept reservations. In addition, the Big Lion had interviewed by telephone and conducted sideline investigations. Now the Dongfeng Honda CR-V 1.5T model has indeed suspended its sales. It only accepts orders when the customer agrees. The feedback rate of the Dongfeng Honda factory and the sincerity in solving the problem are still there. Compared to previous years, some manufacturers allowed owners to do troubles, that is, the horizontal attitude of not resolving the problem, Dongfeng Honda did not allow owners to wait too long this time. After all, manufacturers still have to rely on owners to eat, to maintain the owner's interests and reputation. This is the most basic sense of service.

Focus

So why does the oil rise? Why are problems more often found in areas with cold winter weather?

In fact, the problem of high oil level is also not salvageable. The main reason for the increase in engine oil is the leakage between the piston ring and the cylinder. At low temperatures, the fuel direct injection engine will spray a small amount of gasoline onto the cylinder wall during high pressure injection, creating a "wet wall." At low temperatures and severe cold, the cold start of an in-cylinder direct injection engine will inject excessive fuel to make a rich gas mixture to satisfy combustion and warm up the engine. Therefore, fuel vapor or unburnt liquid fuel near the cylinder wall will have A small amount is scraped into the crankcase by the piston ring from the gap, resulting in oil dilution and eventually causing the oil level to rise.

Under normal circumstances, there are two ways to deal with this phenomenon. The first is to let the gasoline mixture into the cylinder to fully burn. This can be solved by changing the ignition timing to have a more accurate and appropriate ignition process during the compression stroke of the engine.

Therefore, manufacturers mentioned in the recall that they will adjust the timing of fuel injection for ECUs for consumers and will speed up the temperature increase of engine oil after ENG start to suppress the problem of oil engine oil position increase. Perhaps this is the easiest and quickest solution. In the end, it depends on the feedback of the riders in the future.

In fact, the fuel oil direct injection engine oil level rise not only Dongfeng Honda, Changan's CS75 models also appeared to raise the oil level, but also started the recall. For this kind of car failure that is not a single case, manufacturers should find suitable solutions to eliminate the concerns of car owners, so do not have to worry too much. Because if the oil rises within a reasonable range, it will not cause direct damage to the car's engine, nor will it directly pose a safety threat to the car driver.

Compared with the rise of oil level, in fact, burning oil is more terrible. Because in the case of burning oil, if the motor oil is too small and the rider does not have the first time to solve it will directly cause the engine to wear out, which will cause the engine to pull the cylinder, lock up and so on. Severe engines need to be overhauled or even scrapped.

It is understood that when the Dongfeng Honda's 1.5T engine oil level rises to 31mm, there will be oil pressure fluctuations, PCV channel is blocked, will affect the engine performance. Therefore, if you can control the oil level below 30mm, it will not cause engine damage.

Fortunately, from the data released by Dongfeng Honda manufacturers, 95% of consumers complained that the motor oil level is about 20mm, and most complaints come from cold regions. Therefore, Dongfeng Honda riders across the country do not need to be overly alarmed and do not have to feel threatened by life because of a slight increase in the oil level. Of course, we also recommend that Dongfeng Honda should come up with a reasonable and effective solution as soon as possible so that the riders can see the actual results.

postscript

With the rapid development of China's automobile industry, China has become a world's largest automobile country. There are numerous models for sales and even production in China. The fierce competition has caused car manufacturers to be busy with production, so they have neglected some of the reliability controls. They all said, "I can't eat hot tofu," and the problems are understandable under the updated automotive environment. For riders, if there are quality problems in the car, we should be calm, and panic and emotion are not conducive to the handling and resolution of the problem.

For manufacturers, the key is that problems arise and they must be resolved in a timely manner. This time, the sound of oil rising is indeed not small, but fortunately, the factory responds promptly and handles it in a timely manner. Ultimately, can the problem be solved perfectly and there will be no other problems in the future. We have yet to observe. Big Lion Brothers wishes all consumers who have car problems to solve the problem as soon as possible, and also hope that all manufacturers are responsible for their products in the end, which not only reflects the maturity of the company, but also to increase the trust of their own brands .