Does Honda Earth Dream 1.5L self-priming engine really need to add carbon essence every 5000 kilometers?

The carbon cleaning agent required for Honda Earth Dream self-priming engine is actually developed according to the domestic gasoline quality. As we all know, the quality of gasoline in China is far from that of developed countries in Europe, America and Japan. Earth dream engine is a direct injection engine in cylinder, and its high-pressure nozzle is very precise. If the fuel quality is not good, it is easy to be blocked by sulfide and some minerals in the fuel, resulting in engine jitter, increased fuel consumption and engine weakness. The special cleaning agent for Honda Earth Dream engine is to solve the problem that these sulfides and other impurities are deposited in the oil circuit and engine. In fact, the fuel cleaner can't clean the carbon deposit on the back of the throttle and intake valve at all, because the fuel of the direct injection engine doesn't pass through the throttle and intake valve at all. In fact, there is still one thing that everyone hasn't noticed, that is, the engine with compression ratio over 10: 1 needs 95 or more gasoline, while Honda's 1.5 Earth Dream engine has compression ratio of1. Why do you still need to use the current 92 # oil? This is also the engine adjustment made by Honda in order to adapt to the domestic market, that is, delaying the valve closing and discharging a part of the inhaled air, thus reducing the in-cylinder pressure and reaching the optimal pressure required for the combustion of No.92 oil. Because it is in-cylinder direct injection, there is no need to worry about the mixture being discharged and increasing fuel consumption.

This seems really unnecessary. I don't know if it's fuel treasure's deliberate hype, or the publicity of troublesome netizens. In short, puzzling carbon deposits and fuel treasure have become hot words. Sometimes when I go to the gas station, the oiler will touch the exhaust pipe with his hand and show me the black ash on his hand, saying that my car has carbon deposits, and it is not good for the car without detergent. In fact, whether it's an engine or a car, it's really not that exquisite. As for the earth dream engine, I don't think it is necessary. Personal opinion, if you are not at ease, feel free.

This Earth Dream engine is used in my car Honda Binzhi 1.5cvt Comfort Edition. To tell the truth, this engine is a perfect economical car with low fuel consumption and strong power. At present, it has run 37,000 kilometers without any problems. There used to be a common problem that the throttle was too dirty. Later, the ecu was upgraded twice to solve this problem, and it was enough to wash it once every 20,000 kilometers. As for additives, I once added a bottle of 4s gasoline additive, 140 yuan, and said that the effect was obvious. That's nonsense, the price is too expensive, and it is OEM. There is really no need to add it every 5000 kilometers. The additive is corrosive. I suggest adding a bottle of Chevron Tektronix 10000 to 15000 yuan, which can be sold in JD.COM or Tmall, as long as there are activities.

Also remind everyone that Binzhi changes the gearbox oil every two years or 40,000 kilometers.

In-cylinder direct injection engines are now assembled on many models. Both Buick and Ford Volkswagen have in-cylinder direct injection engines. Why only Honda's Dream of the Earth 1.5 needs to add carbon essence every 5,000 kilometers, while other displacement engines of Dream of the Earth don't need to add carbon essence. Mazda's Chuangchi Blue Sky engines are naturally aspirated in Japan, with high compression ratio and no need to add carbon essence. They also drink domestic oil and light. Only Honda Earth Dream 1.5 needs carbon removal, and there may be design problems!

Today's engines, especially direct injection engines, need to add gasoline detergent regularly, which is what we usually call gasoline additives. The reason is very simple, because at present, there is no mandatory requirement to add detergent to gasoline in China. At present, the compression ratio of the engine is generally high, the fuel injection control is more and more accurate, carbon deposition is easy to occur inside the engine, and the working condition of the engine is obviously affected by carbon deposition. Honda's 1.5 liter direct injection self-priming engine is required by the original factory to be added every 5,000 kilometers to ensure the cleanliness of the engine and prevent the long-term accumulation of carbon deposits from affecting the normal operation of the engine.

The United States and other developed countries have requested to add gasoline detergent to gasoline, but the gasoline currently sold in China does not contain detergent. In order to prevent and remove carbon deposits, car owners had better add them regularly.

The main component of detergent is polyisobutylene amine, which is similar to detergent in chemical structure, with polar groups at one end and nonpolar groups at the other. Non-polar groups can ensure the solubility of products in fuel; Polar groups can be adsorbed on the surface of carbon deposits or metal parts to remove carbon deposits and prevent their formation, which is also known as cleaning and cleaning. In fact, not only Honda, but also many car brands provide gasoline additives authorized by the original factory in the 4S shop channel, and suggest that car owners add them regularly. At present, some car owners have a misunderstanding that manufacturers sell this product to make more money. In fact, under the background that gasoline in China does not contain detergent, it is reasonable to suggest that car owners add detergent themselves, which is an effective means to ensure the long-term normal operation of the engine.

In fact, this problem should be divided into two parts. First, the Earth Dream engine is directly injected in the cylinder, which really does not adapt to domestic oil products. It is necessary to clean it regularly, otherwise the idling jitter is obvious! Then, it is doubtful how effective fuel treasure is! In-cylinder direct injection engine's carbon deposit is mainly at the top of intake valve, and fuel treasure can't inject it into the fuel tank at all! So we still need to do regular cleaning, but adding fuel treasure is obviously not so easy to use! Honda also wants to make money.

Honda Earth Dream engine is really powerful, but it is not so powerful that it needs to be added with carbon cleaning agent frequently. My old man has been driving the Fit 1.5LCVT version for eight years, during which no additives are added to clean up the carbon deposits, but the car is still very good. Occasionally, with the help of maintenance opportunities, the master will help to look at the carbon deposits, and basically no additional treatment is needed. The subject's statement was too strong.

Honda Fit's 1.5 engine is equipped with i-VTEC technology, which is the first valve control system that can control the valve opening and closing time and lift at the same time. Its advantage is that it can greatly improve the combustion efficiency and performance of the engine. The improvement of combustion efficiency helps to alleviate the generation of carbon deposit to a certain extent, which is mainly caused by insufficient combustion.

Although Honda claims to be the strongest engine in its class, the probability of carbon deposition is not the highest. Many people may think that high-performance engines are prone to carbon deposition when driving at low speed for a long time. In fact, most vehicles will produce carbon deposits, especially those driving in urban areas. It is difficult to avoid carbon deposition after driving at low speed for a long time. This has a lot to do with driving habits and road conditions. It has little to do with the engine itself.

For friends who are particularly sensitive to engine carbon deposit, the most effective and thorough way to clean up carbon deposit is not to add any cleaning agent, but to directly find a professional to disassemble the engine intake branch pipe, scrape off the carbon deposit attached to it, and then clean it and reinstall it. Usually, increasing the speed by running at high speed can also help clean up some carbon deposits. Don't trust additives too much.

You have to understand the earth dream technology before you know whether to add detergent every 5000 kilometers.

Honda Earth Dream Engine Technology

Honda has released a new generation of powertrain "Earth Dream Technology", which perfectly combines low fuel consumption, high power and driving pleasure. Earth dream technology aims to protect the earth's environment, while taking into account new technologies to ensure driving pleasure. The ninth-generation Accord in China became the first model equipped with "Earth Dream Technology" technology, and then Fit and other models also joined the ranks.

System working schematic diagram

The combustion chamber of in-cylinder direct injection vehicle has high temperature and high pressure, which produces relatively more carbon deposits and is relatively firm, so it is necessary to use cleaning agents regularly.

Cleaning process of carbon deposition measured by endoscope

Local piston crown. The owner added 1 bottle of carbon cleaning agent and went back to his hometown immediately, almost at high speed. I feel very motivated when I come back, and the speed is obviously much faster.

The carbon deposit on the piston top passes through 1 bottle of carbon deposit cleaning agent, and most of the carbon deposit is cleaned and golden yellow.

1.5 the direct injection technology adopted by the earth dream engine improves the fuel economy after atomization, but it also brings more carbon deposits. The reason is that the quality of domestic oil products is not up to standard and there are many fuel impurities. As for whether it is necessary to add detergent to 5000 km, I personally think it is not necessary. When doing minor maintenance, you can remove carbon deposits by the way. Generally, 7500 10000 km is enough.

Throttle carbon deposition is caused by exhaust gas recovery. Exhaust gas recovery is through the throttle, especially when the engine stops, the exhaust gas stops at the throttle, and various carbides in the exhaust gas stay on the surface of the throttle, which will become carbon deposits after a long time. This problem was widely recognized before, and I promised to wash the throttle valve free of charge (my car was 8 18.25438+ 1 month in 2005, and it began to drop every time the idle speed was over 3,000, and it dropped to 550-650 around 4,000, and the N gear was obviously shaken, 20,000 kilometers, and it was washed three times in 4 s. I just washed it at the chain store in March this year according to the upgrade of my riders. A reflection of little change after the rise, no, no attention to carbon deposition. The other reflects the average fuel consumption 1, and the power drops. But because there is no condition to test the power on the wheel, if it is based on personal feelings, it is for reference only. I hope that qualified automobile media can make a comparison about the power on wheels for ECU. At present, many chain stores have 9.9- 19.9 throttle cleaning activities, as long as it is not a carburetor cleaner. In addition, many people mentioned that the composition of Chevron Tektronix TCP is similar to that of Guangben Shen You, but there is no laboratory data for comparison.