We already know the four strokes of an internal combustion engine are the intake, compression, expansion/power and exhaust stroke. The intake stroke is responsible for bringing fresh and cool air into the cylinder. This is dependent on the amount of throttle input given by the driver. If the accelerator pedal is pressed fully, the entire throttle valve is opened and the airflow from outside is unrestricted. This is generally the scenario during quick overtakes or drag races, where the driver needs quick acceleration. The more air there is inside the cylinder, the more fuel we can inject into the cylinder and resultantly, more power we can make. This is how the intake stroke functions.
Also read: How does combustion work in an engine – Uses of Spark Plugs and Fuel Injectors!
The compression stroke compresses the air (in case of direct injection system) or air-fuel mixture (in case of port injection system) so that the air…