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Watt was not the inventor of the steam engine, which had long since preceded him, the Newcomen steam engine, but it was large in coal consumption and inefficient. Using scientific theories, Watt gradually discovered the problem with this steam engine. From 1765 to 1790, he made a series of inventions, such as a separate condenser, an insulation layer outside the cylinder, lubricating the piston with oil lubrication, planetary gears, parallel motion connecting rod mechanism, centrifugal governor, throttle valve, pressure gauge, etc., which increased the efficiency of the steam engine to more than three times that of the original Newcogate door machine, and finally invented the steam engine in the modern sense.
The first steam engine was invented by a Scottish blacksmith named Newkerman, which was the most advanced steam engine at the time. Before Newkerman, there was a great deal of interest in the use of steam as a power source for production. In 1688, the French physicist Denis Papin built the first simple steam engine with a cylinder and piston.
However, Papin's invention was not actually applied to industrial production. Ten years later, the Englishman Towis Sevelli invented the steam pump, which was mainly used to pump water in mines. In 1705, Newkerman, after a long period of research, combined the advantages of Papin and Seville's inventions to create the air steam engine.
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In 1860, Lenoir in France built the first practical gas engine (and the first internal combustion engine).
Lenoir, Jean Joseph Etienne, Belgium, French inventor. Born on January 12, 1822 in Musiraville, Belgium; Died on August 4, 1900 in Seine, France. Lenoir was a self-taught man who taught himself chemistry and brought his ingenuity to the fore in many of the inventions he designed.
Most famous, however, was his invention of the first practical internal combustion engine in 1859. A century and a half ago, the steam engine, invented by Sawrey, Watt, and others, already used heat outside the cylinder. The heat-generated vapor then enters the cylinder and drives the piston.
Many people have thought that a flameless mixture of gas and air could be produced in a cylinder**, so that the energy from combustion could drive the piston directly. In fact, Cano had already discussed such a device in 1824 in one of his books on heat. (The difficulty is that the fuel used must be a gas or, at the very least, a liquid fuel that evaporates easily.)
However, it was only in the second half of the nineteenth century, when the world's oil resources were slowly exploited, that the use of such fuels in large quantities was possible. If such an internal combustion engine could be developed, it would be much smaller and much quicker to start than a steam engine (because the mixture of gas and air sparks as soon as it comes into contact with it, and boiling water over a fire is a slow process). Lenoir was the first person to design and build an internal combustion engine that used lighting gas as fuel.
In 1860, he loaded the engine into a small transporter, which became the world's first "horse-drawn car" powered by an internal combustion engine. (Of course, ordinary steam locomotives that do not use horse-drawn horses are already used) and Lenoir also uses such machines as power for ships. The internal combustion engine, invented by Lenoir, had a large fuel consumption.
The development of a practical car was the next generation, and Otto made the necessary improvements to the internal combustion engine. Although Lenoir invented the internal combustion engine, and although he was recognized by the world during his lifetime, he died in poverty.
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The question is not very rigorous, is it? If it's an internal combustion engine, why add steam? However, the steam engine seems to have been invented by Watt.
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Why steam when you have internal combustion?
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What is an internal combustion steam engine? The steam engine wasn't first invented by Watt, I don't know what it was called.
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The world's first steam car was invented by the French in Cuinyu.
In 1769, Güniu invented the first three-wheeled steam car, the power of this car came from the steam engine, the steam device was erected in front of the front wheel of the car, this steam car looked very ugly and strange, but its great thing was that it did not need to be pulled by human power or livestock, and it was moved forward with the power generated by steam, which was already an exciting invention at the time.
Because at that time, many people were still sedan chairs and were using horse-drawn carriages as a means of transportation. Of course, this steam car is still very troublesome to drive, every time before driving, the front wheel of the cauldron needs to be heated for about 15 minutes, the steam gathers to push the steam wheel to rotate to drive the car to start, and then intermittently and slowly walk for a few minutes or so, and the power is gradually lost.
Then heat up for about 15 minutes and then walk for a while, the car not only goes slowly but also has very little horsepower, and if it encounters a bad road or uphill in the middle, the car may not move directly, so the world's first steam car was born.
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The first steam engine, Thomas Sevelly, was invented in 1698.
Thomas Sevelli created the first practical steam engine to solve the problem of power for the rapid pumping of water from coal and tin mines. It is equivalent to the power of 20 horses working at the same time, and can pump water hundreds of feet below the ground.
The machine invented by Thomas also had a fatal weakness: it consumed too much coal as power. As a result, it had to be placed on the edge of a coal mine, which theoretically cost little at the time. Other than that, such a machine doesn't necessarily have much efficiency.
Despite such big shortcomings, it still opened the door for the British to effectively mine coal. The result of the appearance of the first practical steam engine is of extraordinary significance.
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The world's first steam engine was invented by the ancient Greek mathematician Hero of Alexandria in the 1st century AD, which was the prototype of the steam engine.
Around 1679, French physicist Denis Pappin built the first working model of a steam engine after observing steam escaping his pressure cooker. His contemporary, Samuel Moran, also came up with the idea of a steam engine.
In 1698 Thomas Sevelli and in 1712 Thomas Newcomen built the early industrial steam engine, both of which contributed to the development of the steam engine. The need for reality has prompted many people, such as the British Savery and Newcomen, to devote themselves to the exploration and experimentation of "lifting water with firepower".
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In 1764, the University of Glasgow received a Newcoman steam engine that needed to be repaired, and the task was given to Watt. When Watt had repaired it, he saw how hard he worked, like an old man panting and trembling with his weight on his shoulder, and felt that it should be improved. He noticed that the main problem was that the cylinder was hot and cold every time it was steamed, and it was cold and hot, and a lot of heat was wasted.
Can you keep it cold and the piston working as usual? So he rented a cellar at his own expense, collected a few scrapped steam engines, and was determined to build a new machine. Since then, Wa Sleepy Burite has been fiddling with these machines all day long, and two years later, he finally made a new one.
But after a trial of ignition, the cylinder leaked everywhere, and Watt tried his best to wrap it in felt and wrap it in oilcloth, and after several months, it still could not cure this problem.
One day he went to the cylinder to observe the cause of the air leak, and accidentally a hot air rushed out, and he hurriedly dodged, and his right shoulder was already red and swollen, as if he had been cut by a hot knife, and it hurt so badly that he was upset. He was really discouraged, but at this time, his wife gave him courage, and her wife used the method of agitation to arouse the ambition to continue his research. He went back to the underground laboratory, re-read the past materials, cheered up and worked again, and when he was tired, he kept the stove to boil a pot of water to drink, and suddenly inspiration came:
The tea should be cold and poured into a cup; If the steam is going to be cold, why not also "pour" it out of the cylinder? With this in mind, Watt immediately designed a condenser separate from the cylinder, which increased the thermal efficiency by three times and used only a quarter of the original coal. As soon as this key place was broken, Watt suddenly felt that the future was bright.
He went to the university to ask Professor Black some theoretical questions, and the professor introduced him to the engineer who invented the boring machine, and the technician immediately used the method of boring barrels to make cylinders and pistons, and solved the most troublesome problem of air leakage.
In 1784, Watt's steam engine was equipped with crankshafts and flywheels, and the pistons could be continuously pushed by steam coming in from both sides, and there was no need for manual adjustment of the valves, and the world's first real steam engine was born.
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