Two-stroke engine
An internal combustion engine in which the working cycle is completed in two strokes of the piston (i.e. in one revolution of the crankshaft).
Note 1: The downstroke of the piston corresponds to
- fuel injection, combustion and the beginning of exhaustion in diesel engines
- explosion and exhaustion in petrol engines
Note 2: The upstroke of the piston corresponds to
- intake of air and compression in diesel engines
- admission of mixture and compression in petrol engines
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
