Which stroke provides power to the car?
2 Answers
In the four strokes of a gasoline engine, only the power stroke can provide power to the car. The energy conversion relationship is as follows: first, the chemical energy of the fuel is converted into internal energy, and then the internal energy is converted into mechanical energy. The scientific name of the throttle is the accelerator pedal. Below is relevant information about the car throttle: The function of the car throttle: In a gasoline engine, the throttle does not control the fuel injection volume but rather the opening degree of the throttle valve. A smaller opening means less mixture enters the cylinder, resulting in lower engine power output, and vice versa. Solutions for a heavy throttle: If the car's throttle becomes heavy, you can perform a fuel system cleaning. Alternatively, try continuing to accelerate to see if the engine speed increases but the speed does not. If this happens, it may be due to a damaged sensor in the transmission, which locks the overdrive gear.
As a veteran driver with decades of experience, I always find the engine operation process fascinating. Its four-stroke cycle includes the intake stroke, compression stroke, power stroke (some call it the combustion stroke), and exhaust stroke. The power stroke is the crucial moment when the car actually gains momentum. At that instant, the compressed air-fuel mixture reaches its limit, and with a spark from the ignition plug, it explodes with a bang, forcefully driving the piston downward. This energy is transmitted through the connecting rod to the crankshaft, ultimately turning the wheels and setting the car in motion. The other strokes merely prepare or clean up—without this explosive phase, the engine would labor in vain, leaving the car sluggish and powerless. When I feel sluggish acceleration while driving, I worry about potential ignition system issues and promptly check the spark plugs. The whole process resembles a waltz, with the power stroke being the climactic moment that delivers that exhilarating push-back sensation.
