The operating principle of a car engine is mainly to convert chemical energy into mechanical energy.
The reason why the engine has sufficient power is that the kinetic energy generated by the combustion of the fuel in the cylinder causes the piston in the engine cylinder to reciprocate. This is also a work cycle process.
The power of the engine is due to the fact that the piston in the engine cylinder moves back and forth while driving the connecting rod on the piston and the crank connected to the connecting rod to burn. The center of the crankshaft continues to move back and forth in a circular motion. movement to produce power.
1. Different properties
A piston engine relies on the combustion of fuel to drive the movement of the piston, which is then converted into rotation of the crankshaft, similar to an internal combustion engineordinary erne. A jet engine consists of an inlet, a compressor, a combustion chamber, a turbine and a rear nozzle. After the fuel is burned, the high temperature and high pressure gas drives the turbine to rotate. compressor, so the compressor spins, draws air into the engine and pressurizes it dozens of times. The high temperature and high pressure gas exits the turbine and enters the rear nozzle before being ejected to obtain thrust.
2. Different uses
Turbine engines include steam turbine engines, which are mainly used for electricity generation, and gas turbine engines, which are mainly used for aircraft engines and are rarely used for energy production.
3. Different structures
Turboshaft engines are composed of a compressor and a turbine. The front end is a compressor, through thewhich fresh air is compressed to more than 50 bars, then burned with the fuel in the combustion chamber, then sent to the turbine. Part of the energy from the gas is transferred to the turbine, causing the turbine to rotate at high speed to cause the compressed air to rotate. The compressor and turbine are connected to a shaft, and the gas is eventually ejected at high speed, which generates thrust to propel the plane forward.
The structure of turbines differs between electricity generation and aircraft engines. In terms of electricity generation, turbines must do their best to use the energy from the gas. In particular, steam turbines are very long and divided into several stages to utilize as much of the steam energy as possible.