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) | 
|---|---|---|---|---|
| WP4.6NQ220E40 | 162/2300 | 800/1200-1800 | 4 | 4.6 | 
| WP4.6NQ220E50 | 162/2300 | 800/1200-1800 | 4 | 4.6 | 
| WP4.6NQ220E61 | 162/2300 | 800/1200-1800 | 4 | 4.6 |