What Systems Make Up an Engine?
2 Answers
An engine consists of two major mechanisms and five systems, namely the crank-connecting rod mechanism, valve train, fuel supply system, lubrication system, cooling system, ignition system, and starting system. The crank-connecting rod mechanism is the main moving component that enables the engine to complete its working cycle and achieve energy conversion. It is composed of the cylinder block group, piston-connecting rod group, and crankshaft-flywheel group. The function of the valve train is to open and close the intake and exhaust valves according to the engine's working sequence and process, allowing the combustible mixture or air to enter the cylinder and exhaust gases to be expelled from the cylinder, thereby achieving the gas exchange process. An engine is a machine capable of converting other forms of energy into mechanical energy. It can refer to either the power generation device or the entire machine including the power unit.
Let me share my 30 years of auto repair experience about the engine system. It's like a combination of human organs - the intake system breathes fresh air like our lungs; the fuel system supplies gasoline just as the digestive system delivers nutrients; the ignition system acts like a cardiac pacemaker, precisely igniting the air-fuel mixture. The cooling system regulates temperature to prevent overheating, while the lubrication system ensures smooth operation of mechanical components. The starting system functions as the wake-up device, and the control system serves as the engine's brain, coordinating all components. The most common issues are usually fuel line blockages or aging ignition coils. Regular replacement of the three filters and spark plugs is recommended.
