"Heavy lifting eight pieces" engine deep lifting oil increased number of suspended cases and fool identification method 30 seconds lecture hall
Welcome everyone to watch 30 seconds to understand the new car program "30 seconds lecture hall", this program will mainly explain the technical problems in plain language, in addition to the conventional technical explanation, of course, will also reveal some of the car companies to avoid the problem, then let's start with a recent hot topic -- oil phenomenon.
The history of oil injection is not a case. The word "oil increase" is opposed to burning oil or oil consumption. We always think that oil will be less and less, but the increase of oil in fact is more likely to happen in modern engines than burning oil.
The increase of oil is actually more terrible than burning oil. It's not that if you don't burn oil, it's okay. First we need to know why the oil will become more. We should first introduce a key word oil dilution. You can understand that there are many other things in the oil, such as water, fuel oil or antifreeze, which will cause serious damage to the engine once the oil is mixed up to a certain amount.
The first possibility is also one of the most important types of keyboard, which is "the dilution of the engine is the problem of piston rings, because the piston ring clearance is too large", but on the contrary, if the piston ring is excessive wear and decrease in elasticity, it will increase the consumption of oil, and the new engine is unlikely to exist because of piston ring wear, cylinder liner or oil radiator aging. Now the problem of oil and water interchanging.
In addition to the problems of design and parts, the manufacturer's solution is the most effective and the lowest cost, that is, changing the fuel injection strategy of injectors, such as two to three fuel injections, reducing the penetration of fuel in the combustion chamber, thereby reducing the wet wall of the machine, which is equivalent to feeding the old lady large grains of poor digestion, but once Just feed one and digest slowly. This method is the simplest and most direct way. The manufacturer gives a set of adjusted ECU programs to recall the owner to 4S store to brush a computer. If we want to thoroughly cure this problem, we need to replace the injector, or even redesign the combustion chamber and injector position. However, the first solution of the manufacturer can solve the problem of the increase of most oil. In addition, we can try to avoid short and long idle speed for cars. At the same time, we also expect that if one day the engine evolves to avoid using oil, the problem will be completely solved.