What is the structure of an engine?
2 Answers
Gasoline engine structure includes the crank-connecting rod mechanism, valve train, fuel supply system, lubrication system, cooling system, ignition system, and starting system; diesel engine structure consists of the crank-connecting rod mechanism, valve train, fuel supply system, lubrication system, cooling system, and starting system. Below is relevant information about engines: Engine: The engine can be considered the most important component of a vehicle, and its layout significantly impacts the car's performance. For passenger cars, the engine's placement can be simply categorized into front-engine, mid-engine, and rear-engine configurations. Currently, most models on the market use front-engine layouts, while mid-engine and rear-engine configurations are only found in a few high-performance sports cars. Mid-engine: This refers to an engine positioned between the vehicle's front and rear axles, with the cabin typically located either before or after the engine. It can be said that vehicles with mid-engine layouts are exclusively rear-wheel drive or all-wheel drive.
The structure of an engine is actually quite interesting. It took me years of driving to gradually understand it. Simply put, there's a large cylinder block containing several cylinders, where pistons move up and down. The connecting rods link the pistons to the crankshaft at the bottom, converting the pistons' up-and-down motion into rotational power. At the top, there's a cylinder head equipped with valves that control the intake and exhaust of air and fuel, driven by the camshaft to open and close. Ignition is achieved by spark plugs igniting the air-fuel mixture to push the pistons, and there's a cooling system to prevent overheating, such as the radiator circulating coolant. The oil pan stores engine oil to lubricate all components. Modern cars also feature intake and exhaust manifold designs, with V-type layouts saving more space. Overall, this structure ensures the engine runs smoothly, preventing sudden stalls while driving.
