What is the difference between an internal combustion engine and a steam engine?

Internal combustion engines and steam engines.

The differences are: 1. The inventor is different: the world's first steam engine was made by ancient Greece.

Mathematician Alexandria.

Hero of Alexandria invented the aeolipile in the 1st century, which was the prototype of the steam engine. The inventor of the internal combustion engine was Carl Benz, who invented it around the 80s of the 19th century.

2. The meaning is different: the steam engine converts the energy of steam into mechanical work.

of reciprocating power machinery. The internal combustion engine is a kind of power machinery, which is a heat engine that burns fuel inside the machine and converts the heat energy released from it directly into power.

3. The classification is different: the internal combustion engine can be divided into gasoline engines according to the fuel used.

Diesel engines, natural gas (CNG), LPG engines, ethanol engines, etc., as well as dual fuel engines and bi-fuel engines. Steam engines can be divided into condensing type, atmospheric type and back pressure type according to the exhaust mode and exhaust pressure.

The heat engine is divided into external combustion engine and internal combustion engine according to the different fuel burning places, the external combustion engine refers to the heat engine in which the fuel is burned in the boiler outside the engine, the steam engine is a kind of external combustion engine, which heats the water in the boiler by burning wood, coal and oil, and with the increase of heat energy, the water is converted into steam, and the steam enters the engine through the intake valve, where the steam pushes the metal piston. In this way, the piston moves back and forth inside a cylinder called a cylinder.

An internal combustion engine refers to a heat engine in which fuel is burned inside the cylinders of an engine. Both gasoline and diesel engines are internal combustion engines. The up and down movement of the piston in the cylinder drives the movement of the crankshaft, and the movement of the crankshaft drives the movement of the wheels.

The internal combustion engine and the steam engine were not invented by one person, their emergence has gone through a long historical development, and there are many scientists' contributions in it, the greater influence on the steam engine is Watt, and the greater influence on the internal combustion engine is the German Otto (gasoline engine) and Diesel (diesel engine).

Internal Combustion Engine: A heat engine in which fuel is burned in a cylinder to generate power. The common reciprocating piston internal combustion engine is mainly composed of cylinders, pistons, connecting rods, crankshafts, etc.

After the fuel is mixed with air, it is burned in the cylinder, and the high-temperature and high-pressure gas generated expands in the cylinder, pushes the piston to do work, and then outputs mechanical work through the crank connecting rod mechanism. According to the fuel used, there are gasoline engines, diesel engines, gas engines, etc. It has the characteristics of high thermal efficiency, wide range of power and speed, convenient matching, good mobility, etc., and is the most widely used power machinery.

The steam engine uses a steam piston mechanism, and then uses a crank connecting rod mechanism to drive the circular movement of the shaft, and the steam turbine uses steam to directly drive the blades on the steam turbine to rotate the steam turbine rotor, the former is mostly used for steam trains, and the latter is often used for thermal power generation.

Steam turbine is a kind of turbomachinery (the word turbine ** is the transliteration of the English turbine, and its meaning is a rotating hydrodynamic machinery), which is used to convert gas heat energy and mechanical work into each other. A steam turbine is a thermal turbine that uses steam as the working fluid and converts the thermal energy of steam into mechanical work.

A steam engine is a reciprocating power machine that converts the energy of steam into mechanical work. The advent of the steam engine caused the Industrial Revolution in the 18th century. Until the beginning of the 20th century, it remained the most important prime mover in the world, and later gradually gave way to internal combustion engines and steam turbines, among others.

When the steam engine works, it needs a boiler that boils the water to produce high-pressure steam, through the combustion process, the water boils for steam, and the steam expands to push the piston to do work.

The steam engine and the steam turbine are indeed the same kind of machine. It is powered by the steam generated by the boiler to drive the blades to generate torsion. It can generate electricity, and it can also directly drive boats, etc.

Now the propellers on American aircraft carriers are driven by steam turbines. Its nuclear reactor is only responsible for producing steam. To be precise, there are two types of power** for gas turbines, in addition to steam, direct combustion of fuel oil can also be used as the prime mover.

The steam engine is only different from the internal combustion engine, it belongs to the external combustion engine.

In everyday life, only thermal power stations have external combustion engines.

The combustion of fuel in the cylinder is called an internal combustion engine, and the combustion outside the cylinder is called an external combustion engine.

The external combustion engine is a very old heat engine, and the thermal efficiency is far less than that of the internal combustion engine.

The Stirling engine and steam engine belong to the external combustion engine.

Piston gasoline engines, diesel engines, Wanrk rotor engines (Quisi engines), gas turbines (turbojets, turboshafts, turboprops, turbofans) all belong to internal combustion engines.

The advantage of an external combustion engine is that it does not pick fuel, and it can be burned.

1. The connection between internal combustion engine, steam engine, and steam turbine is: they all convert the thermal energy of fuel into mechanical energy, thereby generating kinetic energy.

2. The difference between internal combustion engine, steam engine, and steam turbine is:

1. The way of converting thermal energy into mechanical energy is different from the components.

The internal combustion engine propels the piston through the rapid combustion of fuel to produce a high-temperature and high-pressure air flow, and generates kinetic energy through the work of the piston. The steam engine uses steam to push the piston to do work to generate kinetic energy. The steam turbine is a kind of rotating steam power device, and the high-temperature and high-pressure steam passes through the fixed nozzle to become an accelerated air flow and is sprayed onto the blades, so that the rotor equipped with the blade row rotates, and at the same time does external work.

2. The power is different.

A steam engine requires a boiler that boils water to produce high-pressure steam, which can use wood, coal, oil or gas, or even combustible garbage as a heat source. Internal combustion engines are mainly converted into mechanical power by the heat generated by burning gas, gasoline and diesel, etc., while steam turbines are converted by supersaturated steam produced by boiler heating water.

3. The time of invention is different.

The appearance time of the steam engine is the end of the 17th century, the appearance time of the internal combustion engine is around the 80s of the 19th century, and the appearance time of the steam turbine is the end of the 19th century.

Encyclopedia - Steam Turbines.

Encyclopedia - Internal Combustion Engine.

Encyclopedia - Steam Engine.

1. The gas turbine mode is different

Gas turbines are internal combustion engines, steam turbines, and external combustion engines.

2. Different devices suitable for the application:

The gas turbine has small volume and weight, high power, high thermal efficiency and high cost, which is suitable for aircraft and high-speed ship applications;

The steam turbine has a large volume, weight and power, and is used to produce high-pressure and high-temperature steam through the boiler to drive the steam turbine to do work, which is suitable for high-power equipment such as nuclear power plants and nuclear-powered ships.

3. The efficiency is different

At this stage, gas turbines are more efficient than steam turbines.

Gas turbines are internal combustion engines, steam turbines, and external combustion engines. The gas turbine has small volume and weight, high power, high thermal efficiency and high cost, which is suitable for aircraft and high-speed ship applications; The steam turbine has a large volume, weight and power, and is used to produce high-pressure and high-temperature steam through the boiler to drive the steam turbine to do work, which is suitable for high-power equipment such as nuclear power plants and nuclear-powered ships. The positioning of the two equipment is not the same, and it cannot be simply compared, and the efficiency of gas turbines is higher than that of steam turbines at this stage.

Gas turbines are burned with diesel or so.

A kind of internal combustion engine of natural gas (heavy oil is also burned in China, and diesel or natural gas is generally burned abroad), and the gas produced after mixed combustion of fuel and air is used to push the blades to do work. (If heavy oil is used as raw material, the blades should be cleaned frequently, because heavy oil is dirty).

The steam turbine uses superheated steam to push the cylinder blades to do work!

There are two types of steam: one is saturated steam, which refers to steam with sufficient moisture; Whereas, superheated steam refers to steam without moisture).

Seeing that the answers of the brothers are also drunk, and they are ambiguous, isn't it even more confusing. The difference is that the steam turbine is just a fan blade at a level, and it will not maintain its rotation without an external air flow blowing on it. To put it bluntly, the gas turbine is the same as the jet engine on the aircraft, but its tail is designed differently, and the original tail high-speed jet is converted into torque output in some way, so the gas turbine can maintain rotation once ignited.

One is gas, the other is steam, I'm a train driver, I look at gas is still good.

Answering the question, don't always quote the above question, it is very simple, the difference between steam turbine and gas turbine is different, the working medium is different, one is gas and the other is steam. The steam is better, the steam can be turned into water, and the compression performance is good.