Hello, let me answer this question for you. Are three-cylinder engines really bad? In fact, the three-cylinder engine is a product born under emission pressure. Many manufacturers have no choice but to choose the development and production of this three-cylinder engine. Of course, three-cylinder engines did not just appear in the past few years. In the 1970s, manufacturers had already developed three-cylinder engines. In the past few years, many manufacturers such as Peugeot Volkswagen Ford Tegu have launched their own three-cylinder engines. They worked out that a three-cylinder engine is nothing more than three points. The differences are fuel consumption and emissions, and the last is cost. Many times, many manufacturers try their best to meet the emission requirements of our country. In recent years, the slow introduction of small-displacement turbines can also be said to have changed one of the emissions issues of large-displacement engines, as well as energy consumption. With the continuous introduction of various technologies, there is also research and development. The engine power per liter continues to increase, and the displacement will decrease to achieve the same power.
Summary: The fuel consumption and emissions of the three-cylinder engine will be lower, and the manufacturing cost and volume will be relatively small, which is more conducive to the layout of the entire vehicle.
You have another question, what is Geely’s Jiaji like? I think it is also good. It is equipped with two power combinations, one is a 1.5t three-cylinder engine and the other is a 1.8t four-cylinder engine. If you are particularly concerned about the three-cylinder engine, I suggest you choose the power version of the 1.8t 4-cylinder engine. In fact, Geely's 1.5t 3-cylinder engine is also well matched, so you can consider it.
Reviewers from various media on the Internet either praise the three-cylinder engine or disparage the three-cylinder engine, but most of them praise it.
Don’t worry, let’s first take a look at the working principle of the three-cylinder engine and the difference between it and the four-cylinder engine, and then judge whether it is good or bad!
As we all know, a four-stroke engine has four cylinders, which is a very smart and reasonable design. The four cylinders work one after another, and the power output is consistent and smooth, so the inline four-cylinder engine has become the most common power. If the number of cylinders is less than 4, there is no guarantee that a piston will perform work throughout each complete stroke (180 degrees of crankshaft rotation), so there will be a gap period in power output.
The working order of a four-cylinder engine is 1, 4, 3, 2. No matter how it moves, it is always balanced with two up and two down. Whether the three-cylinder engine operates in the order of 1, 3, 2, or 1, 2, 3, the distribution of the three pistons is either one up and two down, or two up and one down, which will always be unbalanced.
Although there are now some technologies that can balance the vibration of three-cylinder engines, such as balancing the crankshaft technology, it is only balance; the other is to add an anti-shake mechanism in the engine compartment; but you have to understand that the three-cylinder engine is fundamentally It is defective, no matter how perfect it is, it will only treat the symptoms but not the root cause
My personal opinion on three-cylinder engines is: If you choose a car and just want to drive it for about 5 years and then replace it, then There is no problem in choosing a three-cylinder engine. Because of the short use time, there will still be no major problems with the three-cylinder engine within at least 5 years. After all, I changed the car before I noticed the vibration problem.
If you choose a car and want to drive it for more than ten or twenty years (a slight exaggeration), then never choose a three-cylinder engine, because the vibration of a three-cylinder engine is inevitable, and It gets worse as time goes by, so don't watch those videos of using a new car with a three-cylinder engine to test the vibration. That's just a lie. If you have the ability, do you want to drive it again in 5 or 8 years?
In addition, I personally think that many three-cylinder engines on the market are okay, such as Ford Focus and Buick Hideo. After all, they are cars that have been tested by the market and can be trusted.
Whether a three-cylinder engine is bad or not depends on who you compare it with, and how?
If compared with a four-cylinder engine, it does not have an advantage. The power output of the four-cylinder engine is consistent and the total power is linear.
If I have to say that the three-cylinder engine has an advantage, it is the low cost for manufacturers.
In fact, three-cylinder engines have gradually become the mainstream. The biggest reason is the low cost. Under such strict emission control conditions, it can not only ensure that the power will not collapse, but also save costs. Why not Because it only loses a little comfort, I believe users can accept it.
After all, the new BMW 1 Series has already started to use a 3-cylinder engine, which really caters to the market demand, is cheap, and is a brand name.
The biggest problem of the three-cylinder engine is vibration. It is inevitable due to the engine structure itself. There is no big difference in other aspects.
Jiaji is not immune to this problem.
Is the three-cylinder engine really bad? Is it really bad? not necessarily.
Many people drove hundreds of thousands of kilometers without any problems. In my case, many people bought Chery QQ to drive taxis. The three-cylinder engine has a bad reputation. In fact, most people just follow what others say, but it is not that bad.
You are talking about Geely Jiaji. Because Geely Jiaji is a light hybrid, it must choose a three-cylinder engine. At least for me, Geely's three-cylinder engine is better tuned, except for the ignition. There will be a slight jitter at times, and it doesn't feel like it's a three-cylinder engine at all when driving, and it can easily give people the illusion that it's a four-cylinder engine. You can ask people who drive Geely Binyue or Geely Borui GE to see how the engine is.
In fact, the most important thing is for you to try it and feel it yourself, because you will drive the car in the future, not the people around you, so try it and feel it. Trust your own feelings
Since the number of cylinders placed on both sides of the 3-cylinder engine is unequal, it is prone to jitter during work and the engine sound is louder. Although the balance shaft technology is used It solves the problem of excessive vibration intensity, but it is still higher than the vibration level of 4-cylinder and 6-cylinder engines. Some people even said: "The moment the ignition was started, it was shaking so much that I couldn't even see the reflector clearly."
The four-stroke engine has four cylinders, which is a very smart and reasonable design. The four cylinders work one after another, and the power output is consistent and smooth, so the inline four-cylinder engine has become the most common power source. If the number of cylinders is less than 4, there is no guarantee that a piston will perform work throughout each complete stroke (180 degrees of crankshaft rotation), so there will be a gap period in power output.
The working sequence of the four-cylinder engine is 1, 4, 3, 2, two up and two down are balanced. Whether the three-cylinder engine operates in the order of 1, 3, 2, or 1, 2, 3, the distribution of the three pistons is either one up and two down, or two up and one down, which is unbalanced.
It is entirely a product to comply with emission standards and save costs. If a four-cylinder engine can also meet emission standards, will anyone still choose a three-cylinder engine?
Let’s talk about what the three-cylinder engine is like. Whoever drives it will know. First of all, there is a strong sense of frustration, especially when changing gears at the start. Secondly, when accelerating to overtake at high speed, the force is even less powerful. Some people will say that the three-cylinder engine is more fuel-efficient. I can only sigh. Can one less lever not save fuel? The key depends on how many people are being pulled. If you try with more people or a full load, or if you climb a hill, you will know how good it is. Do you know what it means when a small horse pulls a big car? Fuel economy is achieved when there is no load and the road is smooth, so why not choose a four-cylinder if you have principles? If you want more power, you can also get a turbocharger.
Take Jianghuai for example. Although it is not a mainstream domestic product, it is considered a second-tier domestic brand. It survived the switch to National Five, which shows that it still has some technical level. It is worthy of being an old state-owned enterprise. I heard that it has independent patents. There are more than 14,000 pieces. I don’t care if I don’t know whether they are true or not. After all, I started out as a chassis manufacturer after being a car company for more than 50 years. It goes without saying that JAC’s chassis is solid. Let’s get back to the subject. After switching to the National VI, JAC’s 1.5T four-wheel drive cylinder turbocharged engine, which is very good and complies with the National VI B emission standards. Anyone who knows the technology knows this. I heard that it has a joint venture with Volkswagen, and the quality has been improved a lot. I can only say it after seeing the actual car experience. , the price-performance ratio is really good for home use. Anyway, just like it. It can be used regardless of whether it is a three-bar or a four-cylinder. It is for reference only.
Jiayue A5 and Jiayue X7, starting from 6.88W, are brand new 3.0 era products, suitable for mass household use, please avoid them if you are not short of money
When it comes to three-cylinder engines, many domestic brands now They are all used, including luxury brands, but not everyone can accept them.
Some people believe that due to the inherent physical characteristics of a three-cylinder engine, even if a balance shaft is added, the overall smoothness is difficult to compare with a four-cylinder engine, and the working efficiency is not as high as a four-cylinder engine, especially In terms of fuel consumption, it is not much less than a four-cylinder engine, and with one less cylinder, the cost is also lower than that of a four-cylinder engine.
Then let’s take a look, what are the advantages of the three-cylinder engine? After all, this question will be asked as long as it is a model equipped with a three-cylinder engine. In fact, it can be summarized in three aspects:
First of all, compared with traditional four-cylinder engines, three-cylinder engines are small in size, light in weight, and compact in structure. The smaller size also makes it easier to layout the engine compartment. Increase electrification facilities;
Secondly, less mechanical friction and better single-cylinder volume are its advantages. In addition, the inherent exhaust characteristics of the three-cylinder engine will not be like the four-cylinder engine. The intake stroke will be interfered by the exhaust of another cylinder;
Third, from a technical point of view, although one less cylinder seems to reduce the product cost, the cost of a series of matching , not only do engineers need to do a lot of product optimization, some technologies are even more complex than a four-cylinder engine. Therefore, there is also a saying that "three-cylinder engines are more expensive than four-cylinder engines." Many car companies say that the cost of developing and producing three-cylinder engines is higher than that of four-cylinder engines. This statement is not necessarily a lie.
Not only are emission regulations an unavoidable hurdle, but fuel consumption technical standards are also becoming increasingly strict. This is also the original intention and mission of small-displacement three-cylinder engines. In the past two years, more and more economical cars have come on board with three-cylinder engines. However, not every three-cylinder engine model can take into account indicators such as power, fuel consumption, emissions, and ride comfort, and gain widespread recognition from consumers. Because of this, some manufacturers are thinking of switching back to four-cylinder engines. This may be out of the need to improve the current living situation.
But in the long run, short-term compromises with the market do not mean changes in the development direction of regulations and technology. Therefore, manufacturers should still focus their efforts on technological progress - after all, consumers' pickiness is the driving force. The three-cylinder engine must be the general trend. The difference is just that the speed and twists and turns of each company's development are different.
The cost of a three-cylinder machine is obviously much lower than that of a four-cylinder machine, almost doubled. But the shortcomings are also obvious: the most direct shortcoming is the problem of balance. Because the three-cylinder machine cannot control the problem of vibration offset, many three-cylinder machines use balance blocks (shafts) to offset the vibration, but the vibration is still very large!
In addition to the problem of fuel economy, the three-cylinder engine is not based on the optimal cylinder capacity, so the fuel economy is relatively poor. The problem is that the fuel consumption is relatively high! The fuel consumption of many vehicles with three-bar engines even exceeds that of higher-displacement four-cylinder engines. Therefore, you still need to consider it when choosing a three-cylinder engine.
You need to know that as a four-stroke engine, the four cylinders have one cylinder doing work every 180 degrees, while the three-cylinder only has one cylinder doing work every 270 degrees. Then we can simply convert it. If they are all 1.5 L displacement is one thousand rpm. The four-cylinder displacement is 1.5/4*360/180*1000=750, and the three-cylinder displacement is 1.5/3*360/270*1000=667, so at the same rotation speed The displacement of the three-cylinder is significantly lower than that of the four-cylinder, and it is easier to pass the national exhaust gas inspection. However, without significant changes in thermal efficiency, the power of the three-cylinder will be significantly less than that of the four-cylinder.
China's car consumption is still in its infancy. Cars are still treated as things, and some are even treated as property, even as a conspicuous consumption. This situation requires a car that is all-round, atmospheric, cheap, and high-end. Cost-effectiveness and grandeur are the most important. The natural cheapness of a three-cylinder is absolutely unacceptable.
My family’s family car has been a three-cylinder car since 1988. It has experienced .85, 1.0 Xiali, and .8 QQ. It was not until 2010 that we switched to a four-cylinder motorcycle. I feel that the three-cylinder engine is completely sufficient for home use.