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Chapter 1949: Thunder God and Lightning Mother

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    The volume of sound is measured in decibels.  The voice of ordinary people is about forty to fifty decibels.  This value is more comfortable for people.  If it is to measure the car, then the average car is about 60 decibels.  If it is next to a tractor, the noise may reach 70 decibels.  If it is a tractor with a single-cylinder engine, the noise will reach 75 decibels, which is already a very uncomfortable noise for people.  The chug chug sound made people's eardrums ache.  Therefore, with the advancement of technology and the development of the times, this kind of single-cylinder diesel engine is used less and less on tractors. Except in rural areas, it is not allowed in cities at all.  But if compared with the engine in front of you, it is definitely nothing.  It's a big, single-cylinder engine, and it doesn't have a muffler yet.

    The muffler is also a common part in the engine.  When the exhaust gas of the engine is discharged, if it is directly put into the air, it will push the air and cause vibration, which will make the passengers very uncomfortable, so when the car was just manufactured, the designer installed it on the engine.  Put on the silencer.  This muffler is the exhaust pipe of the engine, which is divided into two parts, inside and outside.  There are countless small holes in the pipe inside, and a thicker pipe is placed on the outside, so that when the exhaust gas from the engine is discharged, it will first expand in the exhaust pipe, and then release it to the outside, which greatly improves  It reduces the stimulation of the air and reduces the decibel of the sound.

    Later, with the continuous improvement of requirements, the exhaust gas of the engine has emission standards. In order to make the exhaust gas meet the standard, a lot of articles have been made on this exhaust pipe, and a lot of rare metal materials are used in it, which is quite expensive.  The exhaust pipe was also targeted by thieves.

    Of course, these are all things to say, the current engine does not have an exhaust pipe at all.  It's not that Qin Baoshan is lazy and doesn't want to make this exhaust pipe.  It's because it's not necessary yet.  After the engine is built, it needs to be installed inside the car body.  Only after it is installed can it be determined what kind of structure the exhaust pipe should adopt.  So now there is simply no way to make exhaust pipes.

    In addition to the exhaust pipe, the engine also needs an intake pipe.  There needs to be an air filter in front of this intake pipe, which can filter the impurities in the air in advance.  For the same consideration.  Qin Baoshan did not manufacture this intake pipe either, and the current engine is bare.  Not to mention the air intake, the exhaust from the exhaust port is earth-shattering.  A puff of black smoke kept coming out, and every time it came out, it would make a deafening sound.  It can be seen with the naked eye that the entire engine is vibrating non-stop. It is conceivable how uncomfortable this kind of engine is.

    But none of the people present now feel uncomfortable.  They looked at the engine that was already running, and they were very excited.  This is a zero breakthrough in the military production of the Eighth Route Army.  They have not manufactured that small gasoline engine, but they have already manufactured this large diesel engine. This kind of engine has more power, can drive generators to generate electricity, can drive their machine tools to run, and at the same time can drive theirs.  tank.  The military industry of the Eighth Route Army has a new impetus.

    All the people were excited, and Li Yunlong's eyes were shining with gold.  He sighed and said: "His grandma's. This thing is like the thunder in the sky is angry."

    This chug-chug sound was deafening, and it was really similar to the sound of thunder in the sky.  After Li Yunlong finished speaking, he continued to admire: "His grandma, if it was brought to the battlefield, the little devil would think it was Lei Gong who came down, and he would have to scare them away."

    Hearing what Li Yunlong said, Qin Baoshan didn't take it seriously.  He didn't think that the little devil could be scared away simply by scaring him.  However, what Li Yunlong said made Qin Baoshan very satisfied. Qin Baoshan saw that the engine was running normally, and then moved his hand to the position of the engine's governor.

    Speaking of the governor of this engine, many people will refer to it as the throttle.  There is a special accelerator pedal on the car.  In fact, to be precise, it should be called the pedal of the governor.  The specific principle is somewhat complicated, and the main application is the principle of centrifugal action.  It's been around since the age of the steam engine.  Qin Baoshan took the governor and pushed it down, so the diesel engine made a cheerful sound, and the speed began to increase.  More black smoke came out of the exhaust port, and it even started to catch fire.

    When the speed is increased, some of the burned gas in the cylinder has been discharged before it has completed the work process, so that the exhaust port will burst into flames.  Those high-horsepower racing cars often see this phenomenon during competitions.At that time, Li Yunlong was even more emotional: "His grandma's, it's not just Lei Gong, there is also Dian Mu. Lei Gong and Dian Mu are all together."

    Everyone was looking at the engine. Qin Baoshan pushed the governor and walked down slowly.  The speed starts to increase from a few hundred revolutions at idle speed, and finally increases to a speed of two thousand revolutions.  At this time, the vibration of the engine became more violent, and the sound of chug chug was also combined together, which was comparable to that of a chainsaw.  Flames are constantly coming out of the exhaust port, and it looks very impressive.

    Li Yunlong leaned over.  He excitedly picked up his own cigarette, but couldn't reach the position of the exhaust pipe, and then half of the cigarette was burnt, and Li Yunlong blew it quickly, saving the other half.

    Seeing Li Yunlong like this, everyone laughed.  Li Yunlong was also a little annoyed there, originally he just wanted to light a fire, but he didn't expect half of his smoke to be burned.

    "His grandma's, I just tried it, and it looks good. I can have a barbecue here. If I have a sheep, I can roast the whole sheep here." Li Yunlong said.

    After the engine ran at high speed for a few minutes, Qin Baoshan adjusted the governor to the stop position, and the engine spun a few more times, and even turned backwards two or three times before stopping.

    The first test drive was successfully completed.  Ma Sanbao said very excitedly there: "Although we don't have a horsepower tester, we can't measure how much power this engine can produce. But I guess 20 horsepower should be no problem. This engine should be able to give  Our tanks are powered." (Remember this website URL: www.hlnovel.com
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