The prototype of the "Jaguar" tank is a main battle tank with a total combat weight of about 40 tons, which was jointly developed by the Huaxia Machinery and Equipment Import and Export Company and the American Cadillac Gage Daxin Company in 1988 and transformed from the Huaxia Type 59 tank.

In addition to the lengthening of the chassis of the propulsion system, the most obvious feature of the propulsion system is that it is equipped with a new engine and transmission.

The engine is selected from the 8V-92TA 8-cylinder diesel engine of the American Detroit Diesel Engine Company, with a rated power of 560 kilowatts, so the unit power of the prototype reaches 14 kilowatts / ton, and the maximum speed on the road and off-road driving speed are higher than those of the Type 59 tank, despite this, the engine power is still unsatisfactory.

The Аvds-1790-2ac turbocharged air-cooled diesel engine in Yang Weiping's hands has a maximum output of only 750 horsepower, equivalent to 551 kilowatts. However, Yang Weiping learned that the company had adopted a variety of new techniques for the engines of the Аvds-1790 series engines, which increased its maximum power to 662 kilowatts.

If it weren't for the accidental discovery of these four Аvds-1790-2ac turbocharged air-cooled diesel engines, Yang Weiping would not have remembered that the American company Taylor Dyne had begun to participate in the U.S. Army's equipment reliability improvement program.

In his last life, when he worked at General Motors in the United States, Yang Weiping had conducted a detailed study of the United States Army's selection of equipment reliability improvement planning in the United States in the seventies.

In the RISE plan, AVDS-1790-2CC alternator with oil cooling, rated voltage 28V, rated current 650A and AVDS-1790-2D generator with air cooling rated current 300A were developed to meet the requirements of different electrical systems of the vehicle.

Improvements to the RISE engine include generator assembly and transmission, low voltage protection for starters, oil pressure switch and temperature sensor, exhaust pipe, intake pipe flame heating device, turbocharger, fuel filtration system and automatic drain device, oil radiator for transmission, oil radiator for engine, oil pan and oil pump, shock absorber housing and oil filtration system, front guard, top side electrical quick disassembly device and some improvements inside the engine such as fuel injection system, cylinder, piston, piston ring, Fuel injectors for cooling pistons, etc.

By the middle of the eighties, the RISA engine had grown from 551 kilowatts for the AVDS-1790-2A to 662 kilowatts for the AVDS-1790, and 882 kilowatts for the final AVCR-1790!

With a power of 662 kilowatts, Yang Weiping is now unable to bypass Taylordyne in terms of technical patents. However, the AVCR-1790 with a power of 882 kilowatts, Taylordyne has not yet seen a shadow.

When he develops the AVCR-1790 and then exchanges it with Taylordyne for other patents for the Аvds-1790 series engine, Yang Weiping believes that Taylordyne will definitely be as eager to get the M2 as Colt. There is no way to refuse the patents for the new technology of the AVCR-1790 model.

Yang Weiping can be sure that the performance of the American Tiger with an 882 kilowatt power AVCR-1790 turbocharged diesel engine is definitely much better than that of the prototype American Tiger!

At that time, this main battle tank belonging to the Chinese Army will of course no longer be called the American Tiger, and Yang Weiping will rename it "Siberian Tiger"!

That same evening. Yang Weiping arranged for someone to go to Nairobi Airport to pick up a group of seven senior engineers from the diesel engine research team of Tiangong Laboratory, who came from Switzerland. Among them were two Germans, three Swiss, two Austrians, and two British.

Early the next morning, Yang Weiping personally piloted the helicopter, carrying seven diesel engine experts. In addition, Ren Changle and three other bodyguards flew away from the Yang manor and went straight to the rock base on the Somalian Peninsula.

Yang Weiping didn't let Tu Zhiqiang, Xiang Rong, Wilson and others waiting at the airport to alarm the rest of the base, and even Qiu Fang and Luo Xiaotong didn't notify them. Directly took the team of experts to the garage where the main battle tank of the Captain of the Hundred was parked.

It just so happened that a 100-man captain main battle tank was undergoing maintenance of the power part, and Yang Weiping was also happy to have a logistics maintenance non-commissioned officer to help, and ordered these three rock maintenance non-commissioned officers, who had been dealing with diesel engines for at least five years, to remove all the Аvds-1790-2ac on this 100-man captain main battle tank.

This turbocharged air-cooled diesel engine with a total weight of 0 kg is 1,867 meters long. With a width of 1,742 meters and a height of 0 meters, it's a big guy.

Under the personal leadership of Yang Weiping. Seven experts in diesel power, plus three experienced technicians, unloaded the engine. It was all dismantled into parts. Each component is then carefully mapped.

Under the personal guidance of Yang Da scientists, the senior engineers of the seven diesel power majors are all as if they have been beaten with chicken blood, and they are full of enthusiasm.

When redesigning the engine piston and cylinder block, he put forward the concept of combining high supercharging technology and variable compression ratio piston technology, increasing the variable compression ratio range to 18:1~, and reducing the maximum burst pressure to 123MPa.

After completing the design of the new piston, piston ring, connecting rod, rocker arm, crankshaft, and cylinder, Yang University began to improve the oil supply system.

First, the plunger diameter of the fuel injection pump was increased from 12mm to 13mm, and the number of nozzles and the hole diameter were increased from 8x0276x135° to °, so as to obtain the best atomization, while keeping the pressure in the high-pressure oil pipe less than 2m0kgf/cm2.

Then the two-stage governor was modified, the intake pipe sensor to control fuel and limit smoke during acceleration, and the oil temperature sensor to control engine operating temperature and limit fuel amount.

For the endless whimsy of Yang Da scientists, the seven senior engineers and three technicians were not only impressed, but also ecstatic. This kind of opportunity to get the hand-in-hand guidance of Yang University Scientist is absolutely too rare and precious.

After completing the new design of the oil supply system, Yang Da scientist improved the lubrication system and designed a centrifugal oil separator to improve the efficiency of air filtration and ensure the quality of the oil.

In terms of cooling system, Yang Da added an air intake intercooler on each side of the engine, and the cooling air flow increased from 68kg/min n to g/m. N.

The most central and important improvement was the redesign of the turbocharger structure. The engine's compressor aluminum alloy impeller was made with backward curved blades, and the diameter was changed to 130 mm.

The original AVDS-1790-2A and AVDS-1790 motorized compressor aluminum impellers have ordinary radial blades with a diameter of 1145mm.

This improvement makes the AVCR-1790 motor have a pressure ratio of 4:1 and an air flow rate of 0795kg/s when the power is calibrated.

Completely immersed in the design and prototype manufacturing of the new turbocharged air-cooled diesel engine, Yang Da scientist is almost completely oblivious to foreign affairs.

In addition to calling Tang Weimin and Jonathan during this period to inquire about the resettlement of the 5,000 reincarnation railway soldiers from China, he did not even attend the ribbon-cutting ceremony for the start of the new railway project in Kenya.

After all the drawings of the new tank engine were designed, Yang Weiping personally processed all the parts, and the processing of several key components could not be completed in the maintenance plant of the rock base, so Yang Weiping took people to Stuttgart, the Federal Republic of Germany, in a diesel engine factory under the Mercedes company, planning to process these parts by himself, and then pack them and ship them back to the Somalia Peninsula.

Frederick, vice president of Mercedes, learned that Yang Dake's family had come to Stuttgart and made a special trip back from the United States.

When he saw Yang Dakejia wearing work clothes in the precision machining workshop of the factory and operating a five-axis linkage lathe to process a new type of cylinder that he had never seen before, the kind of concentration and skillful operation displayed by Yang Dakejia immediately made Frederick understand what it means to be famous.

It is obviously not a fluke that Yang University scientist can achieve so much at such a young age. In addition to his superhuman foresight and foresight in theoretical research, his familiarity and operation of mechanical equipment are also top-notch!

"Yang, if I'm not mistaken, are you developing a new type of high-power diesel engine?" Frederick couldn't help but ask when he saw Yang Weiping turn off the power of the machine tool after Yang Weiping finished the last process.

Yang Weiping took off the pair of white gloves stained with a lot of oil in his hand, put them on the operating table, turned around and saw Frederick in a suit and leather shoes, was slightly stunned, and then said with a smile: "Mr. Frederick, didn't you go to the United States on business?"

"You came to Stuttgart, I went to Mars, and I have to rush back immediately!" Frederick looked very enthusiastic and cordially reached out and patted Yang Weiping's arm, and said with a loud smile: "Last time I went to Nairobi, you entertained me in the best way, and now that you are rarely in Stuttgart, of course I can't neglect your distinguished guest." ”