In the case of the rapid development of science and technology, there is such industrial products, which seems to take off with this era – it is an internal combustion engine.
On the car we will get in touch with us, the internal combustion engine is its heart, which is the engine.
So why said that the car engine seems to be from this era?
If we reach the Near 40 years ago, we have launched a front-rearward quot; buy vegetable coupe quot;
I believe that many small friends have already guessed, it is the version of Toyota’s fifth-generation Carolla, which is the famous “head text D” protagonist Fujihara Tuohai.
This AE86 born approaching 40 years is equipped with 1.6L natural intake engine, maximum power 118PS / 8000RPM, peak value Torque 149 nmIddot; M / 5200RPM, matching 5-speed manual gearbox. 
To the late Tuo Hi, his dad changed 4A-GE, reached 240 horsepower, this data is more exaggerated than today 1.4T, 1.5T, 1.6T turbine is more exaggerated, and the lift rate has reached 150 horsepower / Rise.
See this power parameter, what did you find?
Yes. 
Even a 40-year gasoline engine, it also made the engine parameters of today’s car today. This generation of gods developed by Yamaha, even at the time, the red line above 8000RPM Rotating speed.
This makes it now in a small displacement of the turbocharged engine?
However, although the rut to provoke this seemingly bad answer topic, the times are in progress.
Why show?
First, today’s automotive internal combustion engines, can not be previousThat kind of quot of the oil applied to the throttle, emission large household quot;
Secondly, in the case where the internal combustion engine technology becomes more mature and the manufacturing tolerance is more strict, they become more precise and more efficient.
Of course, it is also more environmentally friendly.
The words come back, to be said to be a completely developed automotive technology, that is really ahead of the automatic gearbox.
For example, it is equipped with a gearbox on a luxury brand car such as BMW, Audi, Jaguar, has quot; the most powerful atquot; the name of the name The Vost 8-speed automatic transmission must be the crystallization of the modern automotive industry.
Therefore, today’s fuel trucks are compared to fuel cars in four or fifty years, in terms of various aspects, especially internal combustion engines, it still has a qualitative leap. 
But things have made some subtle changes in today.
As a consumer of the experience end, it is increasingly able to feel the bonus brought about by the advancement of internal combustion engine technology.
Why do you say this? Just give two examples of us.
Although the new generation of BMW 3 Series (G20 / G28) power parameters and the previous generation BMW 3 Series (F30 / F35) almost Keeping a consistent, there are many new 3-Series friends say that the new 3-Series of the EF 8AT gearbox will have no such thing as the previous generation.
In particular, when 1 stop is 2 gear, the vehicle is more likely to occur significantly.
The same thing happens in general.
On 2020 Buick Regal GS, the maximum horsepower drops from 2019 to the maximum 261PS sudden to 237 ps.
How to upgrade, the power of the new car also has castrated?
In fact, the presence status of these two issues is different, but the reason is, there is actuallyThe same reason.
That is: The main plant has to follow the growing demanding emission standards.
BMW, by regulating the locking rate of the gearbox low gear, quot; forced the quot; the vehicle is switched at a lower speed to achieve better fuel economy and in line with higher Emission Standards.
In general, there is no better way. 
So to reluctantly cut love, simply decrease the power parameters of the engine to exchange better emission indicators.
Behind this seemingly tragic practice, in fact, quot; injured quot; not only manufacturers, of course, there are now consumers.
So, is this it?
It is obvious that it is not enough.
We all know that environmental protection is a hundred years of humans.
So, on the one hand, the advancement of internal combustion engine technology should certainly serve the current consumer service; but on the other hand, as a human fate community, we should think far.
So, at least do not add trouble to future generations, is it a reason for it?
In any case, the Six (B) emission standards were born in this environment with the dispute between the parties.
The figure above is a comparison chart of Six A and Said B.
Although it is a cold-ice number, but the light looks at the comparison of the left and right numbers, it can easily find that although it is also the Six, the Six B emissions standards are more than doubled.
However, in the country, the provinces and cities have already implemented the national six B emission standards, what pressure does automakers need to face?
Obviously, the host plants need to strictly control the number of pollutants emissions from their own gasoline vehicles.
However, under the national six B standard, this harsh requirement almost the first time, the domestic main factories have to make a difficult choice –
Is it thoroughly developed a new power assembly or improved existing motivational assembly?
Even some technologies accumulated a profound joint venture manufacturer, such as Ford, simply choose a bet, quot; broken cylinder survival quot;
The risk of being unrecognized by consumers, Ford completely cut off the four-cylinder engines that sell well A-class cars, all-in-one Cylinder engine.
However, the market prove that Ford’s step is too intok. 
So that the new generation of Fox completely lost its competitiveness in the world, it is too unfortunately.
Ford also proved this bloody example, and thoroughly abandoning the behavior of the four-cylinder machine is still not advisable.
So, is there a more effective way to improve the national six B emissions standard for four-cylinder machine?
Knowledge, I also learned it.
It is to be said that there are more stringent standards of Six B’s emissions, or to understand which part of the pollutant of the engine is mainly composed of.
The contaminants produced by automotive engines include four kinds of fine particles discharge substances (PM), hydrocarbon (HCX), nitrogen oxides (NOx) and carbon monoxide (CO).
Among them, carbon monoxide (CO), hydrocarbon (HCX), and nitrogen oxide (NOx) in the contaminant can be catalyzed by tricolifier of automotive exhaust ends. The converter is transformed into harmless carbon dioxide, water and nitrogen by oxidation and reduction.
This is also the origin of the tricolifier named.
However, stop. What is this less?
“Yes, it is the particulate matter. 
So in response to environmental protection trends, national six emissions regulations provide more stringent requirements for particulate matter emissions of gasoline vehicles.
Compared to national five emission regulations, the particulate matter mass (PM) limits a decrease of 33%, and a limited value requirement of the number of particulate matter (PN).
However, it is slightly ironic that a more economical gasoline ejection technology is more likely to increase the output of particulate matter emissions.
This is the cylinder direct injection technology (GDI) that you will often hear.
Since gasoline does not pass the manifold into the cylinder, it is directly injected from the high pressure tube, although the amount of injector in the cylinder can be more accurately controlled, further reaching oil effect.
The problem is that the mixture is not even uniform, or the phenomenon such as fuel wet walls will cause an increase in particulate emissions.
While we often hear a car factory propaganda, we use 350 bar’s high pressure jet system, we also improve the porous injector.
These mainly start from the engine end, but this effect is reduced by the quality of the particulate matter, completely look at the engine base and match level, so it is not a very good car enterprise for some exhaust emissions, which is not very friendly.
I believe that the small partners above also have a judgment, no matter how advanced fuel injection technology, the experience of consumer perception is very small. 
If you can’t get it, you will send you more than a carbon.
In other words, consumers are increasingly unable to feel the bonus brought about by the advancement of internal combustion engine technology.
So back, continue to talk about this side.
On the one hand, the gasoline has saved, and what is the extra part of the particles?
These engineers have only necessary to continue to move their brains on the exhaust gas discharged.
GPF (GPF (GASOLINE Particulate Filter), quot; gasoline machine particle capture quot;, it is so arrogant.
That is to have a crude cylinder that looks like a three-way catalyst, but the principle of the GPF and the three-yuan catalyst is completely different.
If it is said that the ternary catalyst is oneIf the chemical reaction catalytic harmful gas becomes a filtering device that is harmless, then the GPF is called the name, which is almost just a crude particulate intercepting device. 
The structure of GPF is not complex, and the principle of capturing granules is also very simple.
At first glance, the main constituent material of GPF is this similar to a honeycomb ceramic structure (such as Dong Qingshi prepared), exhaust gas flow through alternate blockage These honeycomb porous ceramic filters were finally passed from the pore wall surface.
These particulate matter are respectively trapped within the wall surface of the carrier and the wall surface, such as interception, collision, diffusion, gravity settlement, respectively, to achieve capture of particulate matter in vehicle exhaust.
The problem is therefore generated here.
It is obvious that although this capture method is fundamentally solved the problem of gasoline car particles, these captured particles will obviously get more, do the end, isn’t it blocked the entire exhaust pipe?
Which row of this is.
But at this time, the engineer of the main plant will tell you: you can’t think more.
Because, GPF can quot; regenerate quot;
What is GPF regeneration? It sounds like it is very mysterious, but it is actually based on several chemical equations.
The most important chemical equation is actually very simple.
The internal temperature of the GPF is 600? C and the oxygen concentration is greater than 0.5 percent, and chemical exothermic reaction occurs: 
Thus, the particulate matter in the GPF It will react with oxygen to produce harmless carbon dioxide. The deposited particles inside the GPF have been cut, and the performance is restored, and GPF is completed.
But will the truth so smooth?
In fact, you can see some clues in the premise of this formula. That is very huge for the regenerative impact of the exhaust temperature for GPF.
So, how to get a higher exhaust temperature? That natural is getting closerThe exhaust manifold of the engine, the better the regeneration effect of GPF.
However, from the schematic diagram made from these two car home, we can see that most foreign models have been Replace the quot of the integrated GPF feature; quadular catalyst quot;, the location is closer to the exhaust manifold.
However, in most domestic models, the arrangement area of the vehicle GPF is far from the exhaust manifold, which is the so-called rear GPF.
Once the GPF is far from the exhaust manifold, the exhaust temperature is also an inevitable thing. Therefore, the GPF regeneration efficiency of domestic models is naturally a lot.
Maybe someone will ask, why is this structure more complex rear GPF being widely used by domestic cars?
In fact, only two words: That is technology.
The structure is complex and does not mean excellent performance. Instead, there has not yet had a QUOT; the mature product of quit; 
So, whether it is a chip manufacturing or a car manufacturing industry, scientific and technological innovation, still retreat.
Of course, some small friends who have purchased a new car don’t have to worry about it.
Relative to the long use mileage, the trapping of this particulate matter is relatively micro, and it is necessary to completely plug GPF, which is also a lot of things.
Now, it is available.
However, in addition to the current situation we temporarily deal with, do you need us to pay attention?
“I am sorry, I really have.
Because, the so-called particulate trapping function of GPF is not limited to carbon C, in fact, there are some particulate matter, and it cannot be removed by regeneration.
They are quot; ash quot ;.
The generation of ash (CaO, P2O5, ZnO, SO3, Fe2O3) is not from the fuel of the engine.- The gasoline itself, but in the engine oil existing in the engine, a small amount of additive in the engine oil will produce ash after combustion, which will also be captured by GPF.
So, an engine with GPF should use a specific low ash oil to ensure that GPF is not blocked.
If the technician of the 4S shop or repair shop does not tell you this, it is likely that they are not very clear.
So, the small friends who have just changed the Six new cars must pay attention to that when maintaining vehicles, be sure to use low ash oil.
This is what you can only do. 
Write in the last
So is the development of the technology give us all the benefits? 
From the example of GPF, we only see the results of a half-mean.
Just like a rut to the ruts.
Almost all convenience stores withdrew the cabinets of the cashier, leaving only a cold ice buffer.
For some young people who don’t hi communication, the appearance of this thing is a more convenient way.
However, for elders who are not familiar with digital payment, it is difficult to buy bottle of water now.
This is quot; technology progress quot; brings quot; consumption upgrade quot;
time will give an answer.
For quot; environmentally friendly quot; this matter, we only hope that all parties can give more reasonable solutions as soon as possible. Not only just to transfer to consumers unnecessary maintenance costs.
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