WP5NG series engine
Weichai natural gas engines include WP4.1NG、WP5NG、WP7NG、WP10NG、WP12NG、WP13NG (Product line up from 74kW to 480kW)，which meet the requirements of China state five emission, and China state six emission.They are widely used in a lot of industry areas such as 6-18m bus, Various trucks, engineering machinery, special vehicles,ship power,and other industries, with high reliability,strong power, energy saving and environmental protection.
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Product portfolio
| Model | Displacement (L) |
Number of valves per cylinder | Rated power/speed (kW/rpm) | Maximum torque/speed (N.m/rpm) |
Min. fuel consumption on external characteristic curve (g/kW·h) |
Technical route | Applicable model |
| WP5NG165E51 | 4.98 | 4 | 121/2100 | 600/1300-1500 | 188 | Lean combustion + DOC | 7.5–8M passenger buses、8–9M public buses |
| WP5NG180E51 | 132/2100 | 650/1300-1500 | |||||
| WP5NG190E51 | 140/2100 | 660/1300-1500 | |||||
| WP5NG200E51 | 147/2100 | 665/1300-1500 |
Product advantages
Power performance
- Improved output torque at low speed and maximum torque and good responsiveness during acceleration and start-up meet the power requirement of the vehicle.
Economy
- The fuel economic zone shifts to the low speed range; squish effect is strengthened and combustion speed is increased.
- The intelligent ignition coil increases ignition energy, reduces load cycle variation of low-speed part, and reduces fuel consumption.
- If the rear axle of small speed ratio is used, fuel consumption of the vehicle will be reduced by 2-3m3/100km further.
Comfort
- Low vibration and low noise (2 dB lower than that of competing products).
Adaptability
- Two alternators and the A/C can be arranged at the front end structure to meet the different user requirements.
WP5NG series engine
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