what are the ways for modern diesel engines to save energy and reduce emissions?
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   Engine Application 
              Truck 
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   Engine Category 
              Weichai 
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   Tags 
          
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| Model | Rated Power/ Speed | Maximum Torque / Speed(N.m/rpm) | Valve Number | Displacement(L) | 
|---|---|---|---|---|
| WP8.320E51 | 235/2100 | 1300/1200-1600 | 4 | 7.8 | 
| WP8.340E51 | 250/2100 | 1400/1200-1600 | 4 | 7.8 | 
| WP8.320E61 | 235/2100 | 1280/1200-1600 | 4 | 7.8 | 
| WP8.350E61 | 257/2100 | 1400/1200-1600 | 4 | 7.8 |