Rebirth of the 1980s: The Military Industry Empire

#790 - Chapter 790 Joint Development of Engines

The Cherokee has two engine options: one is the AMC150 inline four-cylinder engine, with a displacement of 2.5 liters, a maximum power of 87 kilowatts, and a maximum torque of 179 Newton-meters. The technology of this engine has also been continuously improved. By the late 1990s, the power had been increased to 97 kilowatts, and the torque had reached 202 Newton-meters, which was already a limit.

However, this power is only enough to meet the basic needs of the Cherokee. If you want more power, you need the AMC242 inline six-cylinder engine. The displacement of this engine has been increased to 4.0 liters, and the maximum output power has reached 129 kilowatts, with a maximum torque of 300 Newton-meters.

It can be said that the latter is more comfortable for off-roading, but at the same time, a large displacement also means high fuel consumption. The fuel consumption of this type of car can easily exceed 15 liters per 100 kilometers. If you are off-roading, 20 to 30 liters is normal.

Is it possible to have an engine that has a fuel consumption not much higher than the 2.5-liter engine, and also has the powerful power of the 4.0-liter engine?

Then add a turbocharger to the 2.5-liter engine!

There are not many turbocharger engines that are developed from scratch. Many turbocharger engines are cobbled together by adding turbochargers to naturally aspirated engines.

For example, a well-known domestic car brand initially used Mitsubishi's 2.4 engine, but continuous external purchases were not a good solution. The money was being earned by others, so they decided to do it themselves! Therefore, they added a turbocharger to their own 1.5-liter naturally aspirated engine, creating a 1.5T engine. Although it was criticized by some, it worked.

The displacement of this 2.5-liter engine is already quite high. If it is not used for off-roading, it would be overkill for a sedan. However, there is still room for improvement!

"President Qin, are you sure?" Everyone present was stunned. This was too simple, wasn't it? Add a turbocharger and double the power? How is that possible?

"Yes, I'm sure," Qin Yang nodded. "Some things need to be replaced. The intake and exhaust manifolds need to be redesigned, after all, they need to connect to the turbocharger. The internal piston and connecting rod mechanism needs to be strengthened. If aluminum alloy is not strong enough, replace it with stainless steel. Then, matching and adjustment are required. If all goes well, the output power of the 2.5-liter turbocharged engine can be increased to 142 kilowatts without any problem."

"142 kilowatts? Doesn't that mean it has 200 horsepower? That's even more powerful than our 4.0-liter engine!"

Qin Yang smiled awkwardly. He seemed to have forgotten that his 142-kilowatt figure was only achieved by the 4.0-liter engine in the 1996 version.

For a 2.5T engine, 200 horsepower is not much at all. Many 1.5T engines in later generations can produce nearly 200 horsepower. Although the performance drops when tested on a dynamometer, car companies still dare to boast.

And for a 2.5T engine, reaching 200 horsepower is just the baseline. Some engines can produce close to 300 horsepower.

But right now, saying these figures is enough to shock everyone.

President Qin either doesn't act, or when he does, the technology is the most advanced, whether it's for military or civilian projects!

"President Qin, we believe that naturally aspirated engines are the most stable for off-road vehicles. The sudden change in power before and after the turbocharger engages will cause some problems," an American expert said.

That's not a problem.

Naturally aspirated engines have always been praised, not only because they are mature and reliable, but also because their power output is linear. That is to say, the more you press the accelerator, the more power you get, which is a proportional relationship.

Turbocharged engines are more complicated. Before the turbo engages, the power is weak. After the turbo engages, the power suddenly surges, with too much change before and after.

This will cause problems when off-roading. Too little throttle and the vehicle won't move, too much throttle and the vehicle will lose control.

Therefore, it is rejected and despised by many off-road enthusiasts. But so what? The Wrangler, which insisted on naturally aspirated engines in later generations, was ultimately forced to compromise due to fuel consumption requirements and switched to a 2.0-liter turbocharged engine, right?

Now, listening to the expert's question, Qin Yang just smiled: "Sir, you still don't understand what I'm saying. What we are talking about now is for non-off-road use. Of course, you can buy a 4.0-liter engine for off-road use. What about those who don't off-road? We can help them achieve lower fuel consumption and stronger power. Your Cherokees sell well in the US market. Have you done any analysis? How many customers use it for off-roading?"

The other party was speechless. Indeed, his inertial thinking had made him focus on off-roading, but in reality, they were now studying the situation for non-off-road use.

"President Qin, you mean that we jointly develop such an engine, then what role will your side play here?" Marion continued to ask.

In the 1980s, the East did not have advanced car engines. Dodge initially thought they had the East cornered because the East had introduced the 488 engine, so the East would have to import their Dodge cars at a high price. Unexpectedly, the East turned around and cooperated with Audi, who was more sincere, and conveniently installed the 488 engine into Audi's engine compartment.

Now, the Easterners are actually talking to them about jointly developing a car engine. The two sides are not on the same level at all, but the fact is that the Americans are sitting down and listening to their cooperation introduction!

"We will help with joint research and development, especially to solve the most important problem of turbochargers. We can take out our most advanced variable geometry turbine. This type of turbocharger can easily engage even at low engine speeds, increasing engine power at low speeds and reducing exhaust emissions, benefiting future generations."

No one is interested in words like "benefiting future generations," but the variable geometry turbine that Qin Yang mentioned shocked everyone.

"You have this kind of technology?"

Everyone here is involved in the automotive industry, so of course they understand turbocharger technology. The key to this technology is the efficiency of the turbocharger.

However, this technology is too difficult. Currently, the West is also researching it. Unexpectedly, the East already has this technology. This Factory 960 is really amazing!

"Okay, then we can jointly develop it."

"Then please give us your engine data, and we will determine the appropriate turbo matching."

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