Z (4Z)Series Diesel Engine for Genset
Developed in collaboration with renowned domestic and international combustion engine research institutes, including AVL from Austria and RICARDO from UK, Z series diesel engines are a result of our rich experience in diesel engine development, production, and quality management. They feature strong power and excellent performance, characterized by superior NVH (Noise, Vibration, and Harshness) performance, low thermal load, and good fuel efficiency. Since their launch, more than 300,000 units have been produced, making them the ideal choice for generator sets ranging from 10-81kW in various application fields.
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- Features a high-strength cylinder block and an integrated cylinder head design. The engine’s main components are sourced from top international brands, and have undergone over 2000 hours of cumulative reliability testing on various test benches to ensure the product is mature and reliable
- Manufactured following the SAIC Group’s standards, with quality assurance from the Volkswagen engine quality control system in Germany, resulting in high engine quality and consistency
- The engine uses integrated and modular design techniques to improve product reliability, simplify the structure, and make maintenance easier
- It can start normally at -5°C without any auxiliary devices. By adding air intake or cylinder preheating devices, it can start normally at -15°C, showing strong adaptability to different environments
- This engine series complies with non-road National Stage II, III, and IV emission standards.
| Model | 4Z3.2 (G41-G42) | 4Z2.9 (G41-G430) |
| Aspiration | Natural aspiration | Natural aspiration |
| Number of Cylinders×Bore×Stroke (mm) | 4×98×105 | 4×93×105 |
| Cylinder Liner Type | Dry liner | Dry liner |
| Compression Ratio | 17.5 | 17.5 |
| Displacement (L) | 3.2 | 2.9 |
| Fuel System | High pressure common rail | High pressure common rail/Electric control VP pump |
| Governing Type | Electronic | Electronic |
| Speed Governing Rate (%) | 5 | 5 |
| Rated Power (kW) | 32-36.8 | 16-30 |
| Rated Speed (rpm) | 1500-1800 | 1500-1800 |
| Standby Power (kW) | 35-41 | 18-33 |
| Fuel Consumption (g/kW.h) | 220 | 230 |
| Exhaust Smoke (FSN) | ≤2.5 | ≤2.5 |
| Lube Oil Capacity (L) | 6.5 | 6.5 |
| Cooling System Capacity (L) | 5.75 | 5.75 |
| Engine Oil Consumption (g/kW.h) | ≤0.6 | ≤0.6 |
| Noise (dB-A) | < 98 | < 96 |
| Emission Standards | STAGE IV | STAGE IV |
| Net Weight (kg) | 270 | 255 |
| Dimensions (L×W×H) (mm) | 660×555×712 | 660×555×700 |
| Flywheel housing/ Flywheel | SAE4#7.5 | SAE4#7.5 |
| Typical generator capacity (kVA) | Diesel Engine Model | Engine output (kW) | Type | |||||||||
| 50HZ | 60HZ | 1500rpm | 1800rpm | Cylinder | Flywheel & Housing | Fuel system | Emission | |||||
| Prime | Standby | Prime | Standby | Prime | Standby | Prime | Standby | |||||
| (PRP) | (ESP) | (PRP) | (ESP) | |||||||||
| 15 | 17 | 20 | 23 | 4Z2.3-G21 | 16 | 18 | 21 | 23 | L4 | SAE4#7.5〞 | e-gov. | CN II |
| 15 | 17 | / | / | 4Z2.3-G11 | 16 | 18 | / | / | L4 | SAE4#7.5〞 | m-FIP | CN II |
| / | / | 20 | 23 | 4Z2.3-G12 | / | / | 21 | 23 | L4 | SAE4#7.5〞 | m-FIP | CN II |
| 20 | 23 | 25 | 28 | 4Z2.7-G21 | 22 | 24 | 26 | 29 | L4 | SAE4#7.5〞 | e-gov. | CN II |
| 20 | 23 | / | / | 4Z2.7-G11 | 22 | 24 | / | / | L4 | SAE4#7.5〞 | m-FIP | CN II |
| / | / | 25 | 28 | 4Z2.7-G12 | / | / | 26 | 29 | L4 | SAE4#7.5〞 | m-FIP | CN II |
| 25 | 28 | 30 | 33 | 4Z3.0-G21 | 27 | 30 | 30 | 33 | L4 | SAE4#7.5〞 | e-gov. | CN II |
| 25 | 28 | / | / | 4Z3.0-G11 | 27 | 30 | / | / | L4 | SAE4#7.5〞 | m-FIP | CN II |
| / | / | 30 | 33 | 4Z3.0-G12 | / | / | 30 | 33 | L4 | SAE4#7.5〞 | m-FIP | CN II |
| 31 | 34 | 40 | 44 | 4Z3.2-G21 | 32 | 35 | 38 | 42 | L4 | SAE4#7.5〞 | e-gov. | CN II |
| 31 | 34 | / | / | 4Z3.2-G11 | 32 | 35 | / | / | L4 | SAE4#7.5〞 | m-FIP | CN II |
| / | / | 40 | 44 | 4Z3.2-G12 | / | / | 38 | 42 | L4 | SAE4#7.5〞 | m-FIP | CN II |
| 40 | 44 | 44 | 48 | 4ZT3.2-G21 | 39 | 44 | 42 | 46 | L4 | SAE3#11.5〞 | e-gov. | CN II |
| 40 | 44 | / | / | 4ZT3.2-G11 | 39 | 44 | / | / | L4 | SAE3#11.5〞 | m-FIP | CN II |
| / | / | 44 | 48 | 4ZT3.2-G12 | / | / | 42 | 46 | L4 | SAE3#11.5〞 | m-FIP | CN II |
| 50 | 55 | 63 | 69 | 4ZT3.5-G21 | 49 | 54 | 60 | 66 | L4 | SAE3#11.5〞 | e-gov. | CN II |
| 63 | 69 | 75 | 83 | 4ZT4.1-G21 | 60 | 66 | 70 | 77 | L4 | SAE3#11.5〞 | e-gov. | CN II |
| 69 | 75 | 80 | 88 | 4ZTAA4.1-G21 | 64 | 70 | 76 | 83 | L4 | SAE3#11.5〞 | e-gov. | CN II |
| 75 | 83 | 81 | 89 | 4ZTAA4.1-G22 | 74 | 81 | 80 | 88 | L4 | SAE3#11.5〞 | e-gov. | CN II |
| 16 | 18 | / | / | 3Z1.1-G41 | 16.8（3000） | 18.5（3000） | / | / | L3 | SAE5#6.5″ | ECU | CN Ⅳ |
| 25 | 28 | / | / | 3ZT1.1-G41 | 25（3000） | 27（3000） | / | / | L3 | SAE5#6.5″ | ECU | CN Ⅳ |
| 10 | 11 | 12 | 13 | 3Z1.1-G42 | 10 | 11 | 12 | 13.2 | L3 | SAE5#6.5″ | ECU | CN Ⅳ |
| 13 | 14 | 16 | 17 | 3ZT1.1-G42 | 12.8 | 14.1 | 15.5 | 17 | L3 | SAE5#6.5″ | ECU | CN Ⅳ |
| 15 | 17 | 19 | 21 | 4Z2.9-G43 | 16 | 18 | 21 | 23 | L4 | SAE4#7.5″ | ECU | CN Ⅳ |
| 20 | 23 | 25 | 28 | 4Z2.9-G42 | 22 | 24 | 26 | 29 | L4 | SAE4#7.5″ | ECU | CN Ⅳ |
| 25 | 28 | 28 | 30 | 4Z2.9-G41 | 27 | 30 | 30 | 33 | L4 | SAE4#7.5″ | ECU | CN Ⅳ |
| 15 | 17 | 19 | 21 | 4Z2.9-G430 | 16 | 18 | 21 | 23 | L4 | SAE4#7.5″ | VP | CN Ⅳ |
| 20 | 23 | 25 | 38 | 4Z2.9-G420 | 22 | 24 | 26 | 29 | L4 | SAE4#7.5″ | VP | CN Ⅳ |
| 25 | 28 | 28 | 30 | 4Z2.9-G410 | 27 | 30 | 30 | 33 | L4 | SAE4#7.5″ | VP | CN Ⅳ |
| 31 | 34 | 38 | 41 | 4Z3.2-G42 | 32 | 35 | 36 | 40 | L4 | SAE4#7.5″ | ECU | CN Ⅳ |
| 38 | 41 | 38 | 42 | 4Z3.2-G41 | 36 | 40 | 36.8 | 41 | L4 | SAE4#7.5″ | ECU | CN Ⅳ |
| 60 | 66 | 69 | 75 | 4ZTAA3.2-G34 | 58 | 63.5 | 64 | 70.5 | L4 | SAE3#11.5″ | ECU | CN Ⅲ |
| 40 | 44 | 50 | 55 | 4ZTAA3.2-G33 | 39 | 44 | 49 | 54 | L4 | SAE3#11.5″ | ECU | CN Ⅲ |
| 50 | 55 | 63 | 69 | 4ZTAA3.2-G32 | 49 | 54 | 60 | 66 | L4 | SAE3#11.5″ | ECU | CN Ⅲ |
| 69 | 75 | 75 | 83 | 4ZTAA3.2-G31 | 64 | 70 | 70 | 77 | L4 | SAE3#11.5″ | ECU | CN Ⅲ |
| 75 | 83 | 80 | 88 | 4ZTAA3.5-G31 | 74 | 81 | 74 | 81 | L4 | SAE3#11.5″ | ECU | CN Ⅲ |
Z (4Z)Series Diesel Engine for...
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