The engine is the power source of the car?

The engine is the power source of the car. Automobile engines are mostly thermal devices, referred to as heat engines. The heat engine converts the heat energy generated by fuel combustion into mechanical energy through the state change of the working medium.

It is a machine that converts chemical energy into mechanical energy, and its conversion process is actually the process of working cycle. To put it simply, the fuel in the combustion cylinder generates kinetic energy, which drives the piston in the engine cylinder to reciprocate, thus driving the connecting rod connected with the piston and the crank connected with the connecting rod to reciprocate around the center of the crankshaft and output power.

1, engine block: it is the assembly base of engine parts. It includes a cylinder head, a cylinder block and a lower crankcase (oil pan). Cylinder head and inner wall of cylinder block

* * * together form a part of the combustion chamber. Many parts of the body are components of other systems.

2. Crank-connecting rod mechanism: it is the mechanism that the engine generates and transmits power, and it converts the linear reciprocating motion of the piston into the rotary motion of the crankshaft to output power. It comprises a piston, a piston pin, a connecting rod, a crankshaft with a flywheel and a cylinder block.

4. Fuel supply system: The fuel supply system of a gasoline engine includes a gasoline tank, a gasoline pump, a gasoline filter, an air filter, a carburetor, an intake pipe, an exhaust pipe and an exhaust muffler. Its function is to mix gasoline and air into a suitable combustible mixture and supply it to the cylinder for combustion, and exhaust the exhaust gas produced by combustion from the engine.

5. Cooling system: mainly including water pump, radiator, fan, water distribution pipe, cylinder block and water jacket in cylinder head. Its function is to radiate the heat of high-temperature parts into the atmosphere to ensure the normal operation of the engine.

6. Lubrication system: including oil pump, pressure limiting valve, lubricating oil channel, filter, oil filter and oil radiator, etc. Its function is to supply lubricating oil to the friction parts to reduce the friction resistance between them, reduce the wear of the parts, partially cool the friction parts and clean the friction surface.