"This seems to be somewhat similar to Mercedes-Benz Heavy Truck." Thinking of this, someone said it.
Although only a part of it was imported due to price issues and was restrained from the issue of self-producing, it has to be said that the quality of Mercedes-Benz heavy trucks is definitely the best.
"Yes, it uses products with the same chassis and the same supplier as Mercedes-Benz heavy trucks." Qin Zhenhua said.
The famous European ZF company is famous for producing these parts. At the same time, its technology is definitely great.
How great is it? Later, there was a SUV company with the highest independent SUV that built a city SUV code-named H8, which imitated Mercedes-Benz chassis, which had a very strong performance, but it was repeatedly delayed and could not be postponed for a year or two.
Listed.
Why? Because there is a striking sound on the chassis, the car is in a longitudinal four-wheel drive, and the transmission shaft transmits power to the rear axle. As a result, when the speed reaches 150, an abnormal noise will be made behind it.
Although the speed limit for domestic roads is 120, it is possible for a high-end car to reach 200. This was a pity for the technicians at that time. No matter how they look, they couldn't find the reason, and in the end there was no way.
Find foreign players.
The foreign aid I invited was from ZF Company. When they saw that the quality you made was not good. They used ours and installed the rear axle they produced. It was obviously the same data, but after installing it, it was installed on the rear axle of their own.
The bridge is gone!
Moreover, after running tens of thousands of kilometers, when I opened it, I found that there was not even a single broken iron slag inside!
This is technology!
There are many heavy truck brands running in China in later generations, but in the promotion of heavy trucks, the imported ZF direction machine is a very outstanding place. As long as there is this, it will be very stable!
Now, the domestic products are definitely unable to match them. In a short period of time, the one-machine factory itself cannot focus on every component, so some of the ones that should be imported are directly used.
However, in the later stage, these parts will definitely be domestically produced. It is impossible for a domestic infantry fighting vehicle to purchase parts on it.
"What is its engine used?" asked Mr. He.
For China, a huge shortcoming is still the engine. The WZ523 armored vehicle that is preparing to participate in the military parade uses a diesel engine, but its power is only 165 horsepower, which is not enough at all. Perhaps it is on a straight road.
It can speed up to 80 kilometers per hour, but when it comes to the wild, the off-road speed will drop rapidly and will definitely not keep up with the progress of the tracked troops.
"We have prepared two diesel engines," said Qin Zhenhua: "One is Steyr's WD615 engine with a power of 260 horsepower, and the other is Deutsch's air-cooled diesel engine with a power of about the same power. Both match nine
gearbox.”
In fact, this wheeled armored vehicle is complex in technology and has a wide range of sources, which has a lot to do with the Hanyang factory. The ZF steering machine and the Deutz air-cooled diesel engine are now in use, so they took it and actually went to Hanyang.
The relationship between the factory, as for Steyer's diesel engines, the cooperation with Steyer has begun. The initial production was in the form of CDK, so there are also a lot of diesel engines introduced, so I just took it for emergency response first.
Both have their own advantages. For an engine, using air cooling can greatly reduce the complexity of the operator. There is no advanced coolant yet, and it uses ordinary water. In the cold winter, you have to let the cooling be released at night.
For water, use hot water in the morning, but for air-cooled, you need nothing, just start it up directly.
However, a water-cooled engine can give it a good working temperature so that the engine always works in the most suitable temperature range. Moreover, in many operating conditions, there is no need to worry about the high temperature of the engine and has a wider adaptability.
Which one to choose depends on the last army. In short, these are no longer problems. One machine factory has almost brought the use of the theory to the extreme.
After all, in everyone's eyes, the most important thing about a car is the engine! The performance of the engine directly determines the quality of this car. The first-machine factory, which has always been self-reliant, is actually creating this model.
When we were armored vehicles, we started large-scale outsourcing?
"In other words, you just made a shell." Staff Officer Wang concluded there.
Engines, gearboxes, steering machines, these are all purchased from outside. This car looks scary, but in fact, your machine factory has nothing.
What Staff Wang summarized is also the thoughts in the minds of some people.
Qin Zhenhua smiled: "Of course it's not just a shell. Everyone, what does the quality of off-road performance depend on for a car? The engine and the gearbox must have a certain relationship, but in addition to these, some are very
Important! Besides, you can all see that our car is different from what we have now.”
"Car axle." Mr. He said.
The three major parts of the car are engines, transmissions, and axles. Now, the one-machine factory is most proud of is this axle.
"For a wheeled armored vehicle, the layout and quality of the axle directly determine its off-road capability. We put a lot of effort into this regard. We adjusted the distance of the axle to keep the front, middle and back.
The three axles have equal spacing. At the same time, we use a wheel-side reducer, which makes the ground clearance of the axle very high. Compared with Dongfeng Off-road Truck, the performance is much improved."
Dongfeng's off-road military vehicles are still the most common structure. The front engine is transmitted to the transmission shaft and transmission. When it is transmitted to the rear axle, the speed is still high, so it is necessary to slow down. The larger the reduction ratio, the center of the rear axle.
The larger the gear, the more it will affect the passing of the vehicle, and this place will easily get stuck on the ground.
At this time, a new technology emerged. The driven gear in the center of the rear axle is made smaller, and the speed transmitted to the half shaft is very fast. Then, when passing through the shaft head of the wheel, a set is set inside.
Planetary reduction gear, one speed reduction, that's enough.
At the shaft head, it is the edge of the wheel, so it is also called the wheel edge reducer, which is a relatively advanced layout.
"Is the wheel-side reducer a Steyr heavy truck technology?" someone asked.
Now, the only wheel-edge reducer in China is the Steyr heavy truck project that was just introduced. When it was tested in China, the army also participated. I couldn't put it down with this technology, and the ground clearance has been greatly improved.
, it is also stronger and more resistant to fabrication, and the heavy load slope will not break the half-axis.
Qin Zhenhua shook his head: "No, it's the technology of Mercedes-Benz heavy trucks."