The four strokes are... Intake, Compression, Combustion, Exhaust.
intake-compression-combustion-exhaust
combustion and expansion
combustion and expansion
combustion and expansion
Number 1, the intake stroke. Weather it is fuel injected or has a carburetor makes no difference. Most internal combustion engines today are 4 stroke engines. The four strokes refer to intake, compression, combustion and exhaust strokes that occur during two crankshaft rotations per working cycle of Otto Cycle and Diesel engines. The four steps in this cycle are often informally referred to as "suck, squeeze (or squash), bang, blow." Intake stroke
720 degrees
compression and ignition
720 degrees
Compression and ignition
A 4 stroke engine is also referred to as a four cycle refers to the internal combustion whereby the piston completes 4 separate strokes with a single thermodynamic cycle.
The four-stroke engine cycle.