If you do not understand it, then nothing will do.
There's a belt connected to a small motor, the belt spins a cog and rod connected to the pistons, the pistons are then forced back up by the small explosions from the sparkplugs and the gasoline. And sparkplugs are what create the spark through the batteries power.
A controlled explosion of vaporized gasoline pushes the piston down. pistons are offset so that some pistons are at different positions in the firing stroke to keep the rotation. Also the crankshaft helps keep the pistons moving by weights.
Consider single cylinder engine- the 4 strokes are (1)suction- moves down & vacuum pulls out air-fuel mixture- movement accomplished by dynamo or started during starting (2) compression - exert pressure on air-fuel mixture - Inertia force of the fly wheel aids the movement of the piston. (3) Power - Ignition of air-fuel resulting in power stroke which is utilized for vehicle movement & energy storage in fly-wheel for succeeding stroke. (4)Exhaust- pushes out waste gases after combustion.
In multi-cylinder engine, heavy fly-wheel is not necessary & the power stroke of one cylinder aids the compression or exhaust stroke of others.
Spark is produced by high applying potential between two electrodes of spark-plug for short time. This energy ignites the fuel-air mixture.
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i am a newbie in car and stuff lyk tht ! i wus just exploring the workin of a 4 stroke internal combustion engine and i just dont understand how the piston moves up and down automatically to recieve the gasoline(moves down) and compress the gasoline(moves up)! pls help i am totally confused ! also another of my doubt is how is the spark produced to burn the gasoline in every cycle !
