Parameters:

1. Model: 4Y Petrol/CNG, 4Y Petrol/LPG
2. Type: 4 stroke, water cooling, inline, wedge shape combustion chamber
3. Cylinders: 4
4. Bore: 91mm
5. Stroke: 86mm
6. Displacement: 2.237 L
7. Power/rpm: 58kw/4, 200-4,600rpm (CNG),  63kw/4, 200-4,600rpm (LPG)
8. Idle speed/rpm: 750 ± 50rpm
9. Max. torque/rpm: 150N.m/2,800-3,200rpm (CNG) 165N.m/2,800-3,200rpm (LPG)
10. Fuel supply: Carburetor, petrol/CNG carburetor, petrol/LPG
11. Mixer venturi or proportional
12. Fuel RON 90 ( GB484) & CNG RON 90 (GB484) & LPG
13. Min. fuel consumption Petrol d295g/kw.h, CNG d8.3m3/100km Petrold295g/kw.h, LPG d7kg/100km
14. Oil SAE 15W40, special for CNG
15. Oil consumption d 0.8 %
16. Piston average speed 13.19m/s
17. Crankshaft rotation ( facing to flywheel) anticlockwise
18. Compression ratio 8.8
19. Ignition order 1-3-4-2
20. Distributing:    Intake in advance: 12°,  Intake in lag: 48° , Exhaust in advance: 54°, Exhaust in lag: 10°
21. Cooling centrifugal water pumped cycling
22. Lubricating: pressed and splashed
23. Starting: electric starter