The car giant started by marrying the daughter of the king

Chapter 105: Subversive design becomes an irreplaceable classic
"The so-called light wheeled high-travel vehicles or all-terrain wheeled off-road vehicles equipped by most countries generally refer to jeeps."

"Whether it's the German Mercedes-Benz G series, our BJ212, or the American M151 military vehicle, they are all pretty much the same."

"Due to its size, the jeep cannot be equipped with a lot of weapons. Its main purpose is to carry people. Even if it is a derivative version, its carrying capacity is relatively small."

"With the changes in the form of war and the upgrading of weapons, countries around the world actually need an off-road vehicle with larger size, stronger power and better performance."

Jiang Hui plans to finalize some major plans related to the Hummer project today.

Anyway, Zhu Jiansheng has already discussed it within the department for a week, so it is reasonable for him to put it together and come up with a plan over the weekend.

"In the general sense, cars emphasize two factors: carrying people and carrying goods. However, our car is actually the opposite. Carrying goods comes first, and carrying people is second. Moreover, the goods carried are not ordinary goods, but authentic military weapons and military supplies."

"At this time, the first thing we need to consider is the layout of the engine."

For military vehicles, appearance is definitely not the first thing to consider, so Jiang Hui has not yet provided Zhu Jiansheng with the appearance picture of the Hummer.

The chassis and power system are the key to the problem. Without determining these things, it is meaningless to talk about the appearance.

"Our BJ212 has a front-engine. From what you said, this car is not suitable for a front-engine?"

Zhu Jiansheng was not stupid. He knew from Jiang Hui's tone that his plan must be quite special.

"Yes, the engine of this all-terrain wheeled off-road vehicle is not suitable to be placed in the front of the vehicle, which can easily lead to an unstable center of gravity and reduced maneuverability."

As soon as Jiang Hui finished speaking, Zhu Jiansheng immediately retorted: "If the engine is not placed in the front but in the rear, it can reduce the volume of the front of the vehicle, but it is not convenient to install weapons or load cargo, and the cooling system is also difficult to arrange."

In terms of professional knowledge, Zhu Jiansheng is actually no worse than Jiang Hui.

He just can't compare to the knowledgeable Jiang Hui in terms of divergent thinking.

Even if it were to draw a drawing for a specific part, Zhu Jiansheng might be able to do it even faster.

"That's right. The rear-mounted four-wheel drive is not suitable for it either, so we can consider placing the engine at the rear of the front of the car. I generally call this layout a front-mid-mounted four-wheel drive, and the transmission and transfer case are placed in the middle."

Jiang Hui did not argue with his father-in-law, but instead proposed the mid-engine solution.

"The mid-mounted four-wheel drive structure does have many advantages. After all, the weight distribution between the front and rear axles is excellent, and it is also very convenient to arrange the transmission components. But the disadvantages are also obvious, right?"

Zhu Jiansheng raised his glass and took a sip, then continued, "The huge size of the mid-mounted engine and transmission components takes up a lot of space in the cabin, reducing the effective space for passengers."

"Yes, but I think it's not a big problem for this car, because in combat, soldiers don't have that much time to feel the distance between their thighs and the cockpit, or to shake hands with the person in the co-pilot seat. For them, a car that can improve their survivability is the most important thing."

Jiang Hui filled his father-in-law's glass with wine while expressing his own views.

"Dad, our multi-functional all-terrain wheeled off-road vehicle was born for combat. Its positioning is different from jeeps like BJ212."

"According to my idea, it can climb a 60% slope, pass a 40% slope peak, and after installing a wading hose, it can easily cross a 1.5-meter-deep water depth. This performance alone requires a chassis layout that cannot be met by ordinary layouts."

After hearing what Jiang Hui said, Zhu Jiansheng took a breath.

Are the targets set so high?
Will you dig a big hole for yourself by then?
The military representative was happy, but he would be upset if he couldn't make it. "Okay, the engine will be front-mid mounted as you said."

"But what about other chassis layouts?"

Zhu Jiansheng is still very confident in Jiang Hui's design ability. Since he has chosen to listen to his advice, he might as well listen more.

"In the chassis layout of off-road vehicles, in addition to the leaf spring structure of the BJ212, there is also a very classic structural front and rear integral bridge suspension."

"The front and rear integral axle suspension is also called truck suspension. Its advantages are excellent load-bearing capacity and large extension and compression distance of the suspension. Therefore, in many harsh terrains, the four wheels of the vehicle can effectively touch the ground to improve the passing performance."

"But we are not going to use a monolithic bridge structure for this vehicle."

After Jiang Hui said this, Zhu Jiansheng couldn't help but frowned and asked, "Why?"

In his opinion, isn't it true that all-terrain wheeled off-road vehicles should focus on high passability?

“The overall bridge has good load-bearing capacity and off-road capability, but it will reduce the vehicle’s handling performance and is not convenient for high-speed driving.”

"Our new generation of military off-road vehicles must have high mobility. For civilian vehicles, high mobility may mean very good off-road capabilities."

"But in the military, I think high mobility refers to a variety of indicators such as flexibility, passability, and marching speed. After all, the shorter the time to reach the target on the battlefield, the greater the advantage."

Although Zhu Jiansheng did not fully agree with Jiang Hui's explanation, he knew that what he said made sense.

Whether the front-line users are most concerned about these performances remains to be further confirmed.

"What about the suspension?"

"You don't use an integral bridge, and it seems that you don't plan to use the leaf spring suspension of BJ212. So how do you plan to design it?"

Although most Chinese consumers in later generations do not care so much about chassis performance such as suspension, as an expert in the automotive industry, Zhu Jiansheng cannot possibly not care about suspension.

To a certain extent, if the suspension is not designed well, then the car will be a failure.

"I plan to equip this vehicle with four-wheel independent suspension to ensure that the vehicle can maintain very good stability when running at high speeds, making it a truly highly maneuverable all-terrain wheeled off-road vehicle."

After hearing what Jiang Hui said, Zhu Jiansheng frowned again.

A military all-terrain off-road vehicle actually uses independent suspension?

It sounds unreliable!

We can't just make it an independent suspension just to take into account future civilian needs, right?

Jiang Hui sensed Zhu Jiansheng's doubts and prepared to explain them to him carefully.

I guess the Fifth Ministry of Machine Building and military representatives will have questions about this issue after the project proposal is submitted.

(End of this chapter)