. The most common classification types
1- According to usage
2- According to the speed
3- By design
4- Those according to their size.
1- According to its usage:
Engines are classified according to their application areas.
a- Marine type for use on ships
b- Industrial type used in generators, compressors and pumps
c- Automotive type used in road vehicles
d- Traction type used in locomotives and trains
2- According to the speed:
Industrial motors are generally examined in 3 speed class.
a- High Speed - over 1000 rev / min
b- Medium Speed - between 400 rev / min - 1000 rev / min
c- Low Speed - up to 400 rev / min
For 50 Hz and 60 Hz applications;
50 Hz: 3000, 1500, 1000, 750, 600, 500 rpm
60 Hz: 3600, 1800, 1200, 900, 720, 600 rpm
3- By design
Duty cycle (4 stroke - 2 stroke)
Piston action or piston connection
Cylinder arrangement
Type of fuel used
Supply condition of the air cylinders (such as ambient pressure or high pressure)
4- By measure:
This classification is the most controversial one because the factors determining motor size; different values such as cylinder number, cylinder size, speed, average pressure. From this point; horsepower per cylinder is used for size classification.
Small type: below 25 hp / cyl
Medium type: from 25 to 200 hp / cyl
Big type: above 200 hp / cyl
