today stems from a discussion on the topic almost know, and vehicles are closely related.
In view questioner, the Japanese car small problems relatively small, many European and American car or other vehicle problems, because the Japanese car parts life requirements of relatively high.
This formulation is very interesting, it is in line with our basic knowledge of things good and bad, and pliant workhorse. I still remember a lot of old 80’s came durable goods, then presumably in pursuit of comprehensive income, durability also will be down. Or now use mobile phones more than plastic and glass decoration than protection of steel before, is not it easier to break it.
would have been a certainty conclusion, but as an automobile engineer, because in-depth automotive research and development, manufacturing process, I found that this view is open to question. Some doorways, really worthy of consumer understanding.
Auto Parts life of the how the assessment?
If auto parts by the split, of thousands of large and small parts can be disassembled. Because no way to get them to life contrast components, will talking to itself. So we need to first “component life” this formulation do a definition, classification, try to find reasons for the big direction, and facilitate our further analysis.
To conclude, auto parts life can be divided into two dimensions.
1) working life; 2) Environmental durability.
What is the working life of it? Like cell phone batteries can be used how long, how many times can pull zipper clothes, because the operation itself caused by consumption. If you consume too much, the natural working life is not high.
What is it durable environment? Like people in the Arctic, the Sahara or in the flowers of Suzhou and Hangzhou comfort? Obviously the latter is more conducive to human survival.
Of course, environmental endurance test corresponds to can have many dimensions on the vehicle, such as high temperature, low temperature; there is no physical impact the road surface, there has not been smashed stonesAnd other injuries. In fact, there is also more refined points system, but for us consumers do not need to get so complicated. Under
It should be emphasized, that the above method is introduced for a modified version of our consumers to understand. But also in the specific test, the two were not necessarily fragmented, and even do tests often put together, after all cars on the road certainly is a complex condition thing.
For example, the following test this, belong to the composite nature of the life test.
As shown, the data line breakage occurred several times after experiencing rotation.
In fact, this product we are not familiar, it is the rotation data line control panel used, like BYD, Weimaraner and other brands are using these products. The reason why the design of this test is to consider the interface to display data lines in harsh environments, after multiple rotations will not be broken.
higher life assessment requirements of Japanese cars do?
to understand the basic direction of life assessment, we go back to the beginning of a question like chat.
On the whole, life assessment requirements of Japanese cars and European cars are slightly higher, but did not pull the absolute gap.
which are reflected in the following two points.
1. The working life indicators basically no difference. This is reflected in the overall level of almost each local level.
such as special test sets out the seat surface durability testing, a Japanese brand standard than, a US Department of Korea University and a slightly higher.
but also seats them in a durable adjustment of the recliner and the requirements of regulation durable headrest and no gap, even on the loading durable seat frame, a Japanese brand requirements even weaker.
2. The overall environmental durability index almost rixiche some indicators reflect more stringent requirements.
For example, the new Mazda 3 Axela Angkesaila rearview mirror product development, product requirements for vibration abnormal noise is high than the European and American brands. To the formerAsk ear device to capture subjective evaluation and comprehensive determining weighting, which is more common in the human ear using subjective evaluation.
there is a concept of Japanese durable fatigue damage will be durable and loading force of times according to the degree of fatigue is calculated. This is also one of their specialties.
Since the overall gap is not, then why Japanese cars Why have a lower failure rate parts of it? I think the following points and relevant.
1. The Japanese brand components product research and development tend to be more mature (Conservative)
In terms of durability, the use of more mature technical solutions, the failure rate will be more controllable. For example, the above mentioned rotating screen, the Japanese brand is not a walk in the amount of car use (the future probably will not carry).
In my experience, one of the reasons is the failure rate of this product is high risk.
said the conservative Japanese brand technology industry has a very classic example. We did aging test environment, there is a carbon arc lamp aging test, and now the only Japanese brand is doing, other brands are basically using a xenon lamp aging. On the whole, though, between the actual weather detection result carbon arc lamp with product-related rather poor, but you want to change the Japanese standard stubborn, that and so on.
2. The higher the degree of refinement of the test standard Japanese brands
we mentioned above in conservative Japanese brands on technical standards, does have criticized what they mean. But just think Japanese bicycle on the card had to engage in a variety of procedures, car prices do not change the standard there are practical reasons.
Among these, one of the reasons is the Japanese standard generally have a strong logic, standard degree of precision and a high degree of complexity. Its benefits is to better reflect the real situation, because at the same time consider broader, more confidence to cope with risks.
For example, there is a vibration environment of durability testing on the car door, the purpose of the assessment will not appear damaged the door, “environment” by definition is simulated temperature inside the vehicle, “vibration” of the analogThe force is bumpy car up and running, the two together will have an impact on the durability of the door panel.
Interestingly, part of the Japanese brands in this test also joined the simulated lighting conditions, further increasing the severity of the environment. Under their influence, Guangzhou Automobile also in many models do such testing, while the European and American systems is rarely such a deal.
There are many examples, such as Honda stringent requirements as compared to many manufacturers test tooling gantry. The benefits at the time of testing standards rather difficult, because small interfering bench, the test results will be more accurate, more conducive to determine the real situation.
What is tooling stand it? Is simply part in doing some functional tests to simulate real vehicle mounted state, but you can not always really safe in the car test, right? Cost and test space and so is not allowed, so there is tooling bench.
we did not do more than discuss the quality control aspect, because there are quite hard to compare the results of authority. And now that the production system is very mature, will not pull much difference, ultimately to see the cost of inputs. If there are specific models comparison later, we’ll pull out single chat.
repairer too complex, own qualified does not mean no problem
we discussed above parts from the product itself, like bananas and dates together very unpalatable, auto parts also influence each other, so after they had put bolted together, look at the performance.
Test from a User thanks sharing technique
For example, the dashboard cross product. Dashboard cross member dashboard skeleton, like the human skeleton, which support from the dashboard. If you pay attention, be aware of the dashboard cross member is rusting parts and even corrosion perforation (Chery was the focus of criticism here) prone on the car.
We intuitively easily blame the beam does not pass the quality requirements of the instrument panel, but without some extent pair. Because the inner panel is also equipped with air-conditioning and duct systems, it appears as an air leakage and condensation, will makeRelatively moist inner panel, accelerated corrosion of the instrument panel cross member.
it is possible beam quality, like two brands of dashboards, but another air-conditioning and air duct system leakage serious, leading to product performance differences. Then you say, this time to blame others dashboard beam quality not as good as another car prices, is not it biased?
AL Channel Summary
reading this article, I believe we all know have a account.
but have stressed, the article is negative, “Japanese cars are small problems relatively small, European and American cars or other cars are more problems, because the Japanese car parts life requirements are relatively high,” the judgment, but we do not deny the “life of the parts required is relatively high, the corresponding fault is relatively small,” this view. Like good food good exercise, a person’s lifetime limit will be higher, in theory, it is the thing.
but I hope you do not idealize repairer, car hundred years of development, has formed a very mature system. At least in terms of the quality of this piece, the details really fight, fight and fight cost the era of product ideas. If the failure rate is directly equivalent to the required product lifetime is relatively high, the internal logic is flawed.