What are the two major mechanisms and five major systems of an automobile engine?
2 Answers
Automobile engine two major mechanisms are the valve train and the crankshaft connecting rod mechanism, while the five major systems are the starting system, cooling system, lubrication system, ignition system, and supply system. The automobile engine is the device that provides power for the vehicle, determining its power performance, fuel economy, stability, and environmental friendliness. Automobile engines are categorized into diesel engines, gasoline engines, electric vehicle motors, and hybrid motors. Methods for maintaining an automobile engine include: 1. Regularly changing the engine oil and oil filter; 2. Using lubricants of appropriate quality grades; 3. Periodically cleaning the radiator; 4. Maintaining the three filters; 5. Keeping the crankcase ventilated; 6. Regularly cleaning the crankcase; 7. Periodically cleaning the fuel system.
This is what I hear most often from students during car repairs. The two major mechanisms of an engine are the crankshaft connecting rod mechanism and the valve train mechanism. The former converts the reciprocating motion of the pistons into rotational power, while the latter controls the opening and closing of the valves to manage intake and exhaust. The five major systems are also straightforward: the ignition system is responsible for igniting the air-fuel mixture with spark plugs, the cooling system uses radiator coolant to dissipate heat, the lubrication system applies engine oil to reduce friction between parts, the starting system relies on the battery and starter motor to fire up the engine, and the fuel supply system acts like blood vessels, delivering gasoline into the cylinders. These components function like organs in the body, each with its own role. If the lubrication system fails, the engine could seize up and be ruined. Remember to change the oil regularly and check the belts—it can save you a lot on repair costs.
