"Hongfei, you designed this ......" Sigmund. Mia inadvertently glanced at Lin Hongfei, and was immediately attracted by the things designed on Lin Hongfei's computer, hurriedly walked over, and asked eagerly, "Can I take a look?" ”

For an engine designer, a novel engine design method is more attractive than anything else, even if one is engaged in heavy-duty diesel engines, one has made achievements in gasoline engines, and will not be disconnected from each other because of this, the same internal combustion engine, although the working principle is different, but in fact, gasoline engines and diesel engines learn from each other in many aspects, perhaps Lin Hongfei's design will be a great inspiration for himself.

"Absolutely."

Sigmund. Mia is the most important internal combustion engine designer in his company, and Lin Hongfei designed this engine to surprise Volkswagen in front of him. Mia explores the mind together, now Sigmund. Mia said this, which was in line with Lin Hongfei's mind, and gave up the computer to Sigmund. Mia said, "Help me take a look, and give me some advice by the way." ”

"A total of 4 groups of 6 cylinders arranged in the form of W, this is a gasoline engine with 24 cylinders...... "When doing research and design with Lin Hongfei, Sigmund . Mia never knew what politeness was, so she sat down in front of Lin Hongfei's computer and quickly looked at a few main design points, Lin Hongfei's crazy design immediately startled her, "God, are you putting two V12 engines together?" What a crazy idea! ”

"yes, that's crazy, isn't it?" Lin Hongfei nodded, "Let's not talk about crazy or not, let's see if it's feasible for me?" ”

"No problem......"

Sigmund. Mia nodded, and continued to shift her gaze back to the computer screen, thinking for a moment. I feel that the screen in front of me is really not enjoyable, simply transfer the projector directly, put down the 200-inch electric screen, and use a special engineering projector to hit the picture on the projection screen in front, compared to such a small thing as a computer screen, or use the engineering projector projection to project the 200-inch huge picture looks cooler.

"The angle between the first and second cylinders is 30 degrees, huh? What is the angle between the second and third cylinders? The angle between the third group of cylinders and the fourth group of cylinders is 30 degrees? So the maximum angle of the engine is the angle between the first group of cylinders and the fourth group of cylinders, 120 degrees? ”

It is not uncommon to arrange cylinders with a large angle of 120 degrees, in fact, the arrangement angle of V-shaped cylinders ranges from 30 degrees, 45 degrees, 60 degrees, 90 degrees to 120 degrees, and even more bizarre 40 degrees or 50 degrees. Volkswagen has just withdrawn from a more bizarre 15-degree small angle 6-cylinder engine, two sets of cylinders can share a cylinder head, but for this 15-degree small angle engine should also be counted as a V-engine, everyone has different arguments, even Volkswagen feels that he is a little lacking in confidence. I gave myself a name, the VR6 engine.

From a pure performance point of view. Of course, it is the engine with two sets of cylinders at an angle of 90 degrees that runs most stably. Vibration is minimal, and theoretically, as long as the ignition angle and cylinder ignition sequence are adjusted, the vibration generated between the operation of the A cylinder and the B cylinder can be completely canceled. In fact, under the same technical conditions, the V-shaped engine with a 90-degree angle is indeed the smoothest and the least vibrating. Riders who have ridden Ducati bikes have been impressed by the engine, except for the unpleasant sound of tractors at speeds below 80 km/h, the barely noticeable vibrations. Among them, the air-cooled twin-cylinder engine arranged at a 90-degree angle has contributed to this.

The sad Volkswagen VR6 engine needs to be arranged with two sets of reverse balancer shafts to balance the engine vibration...... But even so, the control of vibrations is still not ideal.

But unfortunately, the 90-degree angle of the cylinder is not the most economical approach, relatively speaking, the 60 degree and 45 degree angle of the cylinder arrangement can achieve a better balance between the performance of the engine and the production cost, so we see the cylinder.

Sigmund at the moment. Mia was already in working mode, muttering to herself in the image projected on the projection screen, "The 60-degree angle between the second and third cylinders...... Well, the extra space in this part can be used to arrange the exhaust pipes of the second and third sets of cylinders...... The air intake system can be arranged between the first group and the second group of cylinders, and the third group and the fourth group of cylinders. ”

"Huh? Isn't this a perfect angle of 90 degrees between the first group of cylinders and the third group of cylinders, and a perfect angle of 90 degrees between the second group of cylinders and the fourth group of cylinders? 24 cylinders, the crankshaft does work every 30 degrees...... As long as the ignition sequence of the cylinders is adjusted, the engine is perfect, with almost no vibration! God, this is really a perfect engine! ”

As an intern in the diesel engine department of Mercedes MTU, Sigmund. Mia naturally knows that all MTU series diesel engines have a common feature, that is, all cylinders are arranged in a V-shaped way, and the engine should adopt a 90-degree angle in one color, without exception.

"However, Lin, if you do this, even if you don't count the R&D costs, the production cost of your engine will be too large, why don't you use Volkswagen's VR engine? Now you need four cylinder heads, and if you're using Volkswagen's VR engine, you need two cylinder heads. ”

But as soon as these words came out, Sigmund. Mia knew that she had asked a stupid question: the 15-degree small angle VR form engine of the two sets of cylinders can share a cylinder head is a patent technology applied for by Volkswagen in 91, and it is regarded as a housekeeping treasure by Volkswagen, not to mention whether there is a patent conflict with Volkswagen's VR engine before, even if it is not, it will have to fight a patent lawsuit with Volkswagen for several years, which is really a bit unreasonable, and the stability of Volkswagen's 15-degree small angle VR6-cylinder engine is really not very good, and the vibration is also largeThis one looks like a VR6 engine that combines a V6 engine and a straight-6 engine, and the vibration is much greater than that of both the V6 engine and the straight-6 engine.

It really adopts Volkswagen's VR engine technology, and the engine has to use other methods to balance the vibration of the engine, but it is not as good as this, at least in the opinion, Lin Hongfei's design can be regarded as the most optimized W-type engine structure...... There's no doubt that for a 24-cylinder engine, it's going to be an outrageous level of smoothness!

Well? 24 cylinders?

When I think of this number, Sigmund. Mia was stunned for a moment, and then realized one point, that is, it seems that until now, there is no civilian piston engine with 24 cylinders in the world, right? Or to be more precise, so far, but in terms of the number of cylinders, the only engine in the world with more cylinders than the W24 engine in front of you is the R-2160 star-shaped piston liquid-cooled engine designed by Wright during World War II, which is a super big guy with 42 cylinders, but it seems that only a few samples have been produced.

But 24 cylinders...... Sigmund. Mia glanced up at Lin Hongfei, a little confused, unable to understand why he wanted to make such a crazy monster come out, "I'm very strange, what are you going to do with this engine?" According to your design, this engine will not exceed 800 horsepower at a maximum time, right? If it's used in an aircraft you're designing, you can completely replace it with a lighter turboprop engine, and the raw weight will allow you to carry a lot of fuel. ”

If you limit yourself to the designs you see, this is indeed an engine with a maximum output of no more than 800 horsepower...... Damn it! When does the output of 800 horsepower dare to be considered inconspicuous? How do you let those engines with a maximum output of less than 200 horsepower, or even less than 100 horsepower?

"In fact, in the future, I will add a dual supercharging system composed of mechanical supercharging and turbo addition to this big guy, and in order to improve efficiency, the minimum double overhead camshaft design will be adopted," Speaking of this, Lin Hongfei touched his nose, "Maybe there will be some new gadgets added at that time, in short, I plan to design a monster with a maximum output of more than 1100 horsepower, which will be used to surprise Volkswagen at the Sao Paulo International Motor Show in Brazil." ”

"......" Hearing Lin Hongfei's words, Sigmund. Mia was speechless, an engine with more than 1100 horsepower?! Are you just trying to scare someone to death?

"At least 1100 horsepower......" She subconsciously looked at the cylinder and piston, bore ratio and piston stroke settings, and immediately determined a typical sports car engine design that only focuses on large bore short stroke with high power output, but even if power is emphasized, the maximum output torque will not be less than 1400 Nm.

Thinking about this question, Sigmund. Mia became more and more speechless, this is really a crazy thing, but ...... Wait a minute!

Until this time, Sigmund. Mia finally guessed what Lin Hongfei was planning to do, she looked at Lin Hongfei in disbelief, and her eyes showed a look of shock for the first time, "Don't tell me, you plan to design a supercar with a factory power of more than 1000 horsepower?" ”

Factory design power and modified maximum output power are two completely different concepts, even if it is a supercar, no matter how super it is, it is also a civilian car, since it is a civilian car, you must consider one point: durability and stability! (To be continued.) )