What is the Principle of Automobile Movement?
2 Answers
The principle of automobile movement is that the engine converts the energy of gasoline into kinetic energy to drive the car, obtaining kinetic energy by burning gasoline inside the car engine. The following is a detailed introduction to the four-stroke engine: 1. Classification: The four-stroke engine belongs to the reciprocating piston-type internal combustion engine. According to the type of fuel used, it is divided into three categories: gasoline engines, diesel engines, and gas fuel engines. Piston-type internal combustion engines that use gasoline or diesel as fuel are called gasoline engines or diesel engines, respectively. Piston-type internal combustion engines that use natural gas, liquefied petroleum gas, and other gas fuels are called gas fuel engines. Gasoline and diesel are petroleum products and are traditional fuels for car engines. Non-petroleum fuels are called alternative fuels. Engines that burn alternative fuels are called alternative fuel engines, such as ethanol engines, hydrogen engines, methanol engines, etc. 2. Working Process: A four-stroke gasoline engine completes a working cycle through four strokes: intake, compression, power, and exhaust. During this process, the piston moves up and down four times, and the corresponding crankshaft rotates twice.
The principle of automobile movement mainly relies on the power generated by the engine to drive the entire system. The engine burns gasoline or diesel, creating explosive force in the cylinders to push the pistons; the pistons are connected to the crankshaft, converting the up-and-down reciprocating motion into rotational motion. The power is transmitted through the clutch to the gearbox, which shifts gears as needed to adjust speed and torque, delivering it to the driveshaft or front-wheel drive axle. The differential ensures coordinated rotation when the left and right wheels turn at different speeds, and the wheels ultimately rotate and friction against the ground to generate traction, pushing the car forward. The entire process depends on converting fuel energy into mechanical energy, with the cooling system and lubrication reducing friction and heat loss; when the accelerator is pressed, the engine speeds up, resulting in faster acceleration, but air resistance increases fuel consumption.
