But one thing, almost all the coaches have never taught us, and subject one and subject four do not involve knowledge. Yes, it is the knowledge of automobile structure. We have learned to drive and obey the rules, but we know little about the basic structure of vehicles. This has caused us to encounter some minor problems during driving, and we will not carry out troubleshooting and simple maintenance. This is a very embarrassing thing for us.
So, as the soul and engine of a car, what basic things do we need to know? First of all, we need to know what the engine of a car is made of. Secondly, what kind of common problems do we encounter when driving? If you encounter problems, how should you solve them? Let's study together.
The engine we commonly use now is a complete machine mainly composed of engine body, cylinder head, cylinder head cover, main bearing cover, cylinder gasket, oil pan and so on.
Among them, the engine block, as the skeleton of the whole engine, plays an assembly supporting role in connecting crank-connecting rod mechanism, valve train and engine system. If the human body is used as a metaphor, then the body group is equivalent to the skeleton, supporting the whole human body. The engine block of modern automobile consists of engine block, cylinder head, cylinder head cover, cylinder gasket, main bearing cover and oil pan.
As the main sealing part of the valve train, the cylinder head bears the guarantee condition of transforming thermal energy into kinetic energy. The cylinder head, cylinder wall and piston crown together constitute the combustion chamber of the engine. It can be said that the role of the cylinder head is still great. The quality of cylinder head determines the power utilization degree of combustion chamber.
As the theme of the engine, the cylinder block connects each cylinder with the crankcase and plays the role of installing the piston, crankshaft and other parts. The cylinder gasket fills the micropores between the cylinder block and the cylinder head, so that the whole cylinder has good sealing performance, thus ensuring the sealing of the combustion chamber and preventing the air leakage of the cylinder and the water jacket.
Therefore, when JAL encounters cylinder leakage, oil leakage or even air leakage, it is largely due to the poor sealing performance of the engine block. So when we encounter this situation, we can go to the repair shop to check the relevant parts and replace the seals at the leaking parts.