HC-SCR technology is not a new technology. Pen % fun % Pavilion www.biquge.info

As early as 1957, the American Anger Company developed the predecessor of this technology, flue gas denitrification, and used it in the boiler industry.

Although the course of automobile history has changed, the control of fireworks standards in Europe has not changed. With the increasingly stringent emission standards, European car manufacturers, in order to meet the emission requirements, have applied this technology to diesel engines.

But although the technology is an old technology, Li Fanyu's way of applying it is a new way!

Conventional SCR technology is applied to diesel engines, which are to compress urea with the help of air and then return to the cylinder for injection. Although this method of atomization is effective, it requires a special compressed air system on the engine.

This results in a more complex and costly engine structure. In addition, the evaporation of water from the aqueous urea solution in the conveying line will cause the urea to crystallize, which can clog the nozzle and cause failure.

In this regard, Li Fanyu relied on the integration of the cooling pump on the B-01 into the transfer flywheel as inspiration, and designed an integrated SCR injection system without the help of an air compression system.

Although the atomization effect does not meet the standard of air compression system, it is fortunate that the structure is simple and does not increase the cost of engine manufacturing. Moreover, although the atomization effect is not very good, it avoids the problem of crystal precipitation of urea.

Thanks to this design, combustion efficiency and harmful emissions have been greatly improved with little to no increase in cost.

Thanks to these designs, the performance and efficiency of the TS-L609 engine have been greatly improved.

DESIGNED AND PRE-TESTED, THIS INLINE 6 CYLINDER ENGINE HAS UP TO 430 HP, RATED AT 2200 RPM AND UP TO 1700 NM AT 1200-1600 RPM!

However, the displacement has been successfully controlled to less than 9 liters, and the emission standard has reached the Euro 5 standard!

In order to cooperate with this engine, Li Fanyu redesigned a set of transmission and transmission system based on the hydraulic torque converter of the Longji transmission system.

The shift of the tractor in a working state requires uninterrupted power. This is the same as the tank, so this drive system is completely a reduced version of the dragon's back.

This transmission system consists of three modules: torque converter, power shift gearbox and electro-hydraulic control system. There is nothing to say about the torque converter and electro-hydraulic control system at night, and after passing through the dragon's back, Zhengxin can already play. But this power-shift gearbox took Li Fanyu a lot of effort.

Considering the long-term work, and for the sake of cost, this gearbox cannot be made of the same X aluminum alloy as the dragon's back. Therefore, Li Fanyu can only simplify it from the structure and strengthen the force structure.

The gearbox incorporates six clutches with wet friction plates, arranged in a six-in, three-inverted configuration. In this way, six clutches are combined with each other to achieve different gears. Each time you change gears, the gearbox has two clutches working at the same time.

In this way, the gearbox can be operated in and down without interrupting the power.

This transmission system, named "reins" by Li Fanyu, together with TS-L609, constitutes the entire power system of the tractor.

The core part is completed, and the rest is the body and operating system.

The hydraulic operation system of the tractor is actually like that, the purpose of this thing is to hang behind the tractor, to achieve the mounting and lifting of agricultural machinery tools, there is basically no technical content at all, and you can find a matching match in the market at present. Specific to Zhengxin's side, it is nothing more than to enlarge the hydraulic system to match the work requirements of heavy-duty tractors.

The body is another factor that makes up the durability and workmanship of a tractor.

The durability is good to solve, and the problem of how much high-strength steel is used in the case of a reasonable frame structure. But performance, it needs to be considered.

Tractors also want performance?

Yes, it does.

But the performance mentioned here has nothing to do with the safety strength performance of traditional automobiles.

All the performance of the tractor needs to be reflected in the work.

The specific embodiment is in the steering and drive.

When the tractor is working, it is generally driven at a constant and low speed. This way of working may seem like all that is needed is that the thing is powerful, moving, and does not drop the chain.

But don't forget, there's more to a tractor than just a nose. It also needs to drag large agricultural machinery, such as harvesters, green storage machines, balers and so on to carry out agricultural operations.

Depending on the mode of operation, the steering of the tractor, the ground contact area and the unit pressure exerted on the land all affect its performance.

For example, when you are working with a harvester, you have to make a U-turn when you walk from one end of the field to the other, right?

But if the body is not strong and the steering angle is too large, it will be a waste of time and damage to the crops in the field.

And Zhengxin wants to engage in heavy-duty tractors, and this factor needs to be strengthened. After all, it is easy to make a large tractor, but it is the real ability to make this tractor have a lot of power and also take into account the nature of flexible operation.

After careful discussion with the team, Li Fanyu decided to use high-strength steel to build a strong body on the one hand, and to design the fuselage with a loader-style waist folding method on the other.

What is the waist bending method?

It is to divide the body into two parts and hinge them together. Relying on the front wheels, front frame and working device of the wheeled chassis, it swings horizontally around the hinged pins of the front and rear frames to steer.

To put it bluntly, the bridge is like a pair of nunchucks, with a bolt in the middle. With the flow amplification valve hydraulic steering system, the whole tractor can be flexibly steered and turned around like a snake.

Using such a structure, this tractor, which Li Fanyu jokingly called the "Iron Bull", has a smaller turning radius, flexible maneuverability,

Don't underestimate this design, with the attribute of "flexibility", the "Iron Bull" can operate in a relatively small field. Even some small farms can go in and work!

Just such a change will greatly enhance the scope of application of 001, so why not?

In order to further expand the scope of application, Li Fanyu directly abandoned the wheel drive design for the reason.

The "Iron Bull" is too huge, and the weight of more than a dozen tons is placed there. In order to prevent this big guy from crushing the cultivated land or even getting stuck in the wet ground, the R&D team originally wanted to use the side-by-side two-wheel method of foreign mainstream heavy-duty tractors.

In other words, the original four tires are turned into a tire set formed by two wheels, which increases the weight but also enhances the ground contact area of the tires, which can obtain greater friction and reduce the unit pressure on the land.

But when Li Fanyu looked at it, it was all like this, so it was better to be more straightforward!

Thereupon......

An even bolder design was incorporated into the Iron Bull.

That's ......

Four tires, replaced with four triangular track wheels!

These four triangular tracks, given by Li Fanyu a swing angle of up to 26 degrees, can keep the tractor's weight evenly distributed across the four tracks while traversing rough roads, and have greater adhesion to the ground.

The crawler underframe can swing 20 degrees in the vertical direction to ensure that it is in contact with the ground, which greatly improves the floatability and reduces soil compaction, and has excellent adhesion and shock absorption performance!

The grounding pressure in the working state is lower, and the passability of the low-wetland operation is better!

What does this performance mean?

On behalf of the iron bull than other tractors, in an earlier time into the spring snow just thawed to carry out operations, and relying on the four tracks of the super large ground area, the phenomenon of compacting the land during the operation is smaller!

With such a design, not to mention a depression or a wetland, even if it is a swamp, the "Iron Bull" dares to go on a trip!

All of the above attributes are combined to give the "Iron Bull" an unparalleled visual appearance!

When the final design was completed, some game-loving engineers exclaimed in surprise, "it!"

When Liu Qing, who came to visit the door, saw the final design drawing, he was directly stunned: "What are you doing, Brother Fan,? Isn't this the apocalypse in Red Alert 3?"