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) | 
|---|---|---|---|---|
| WP4.135E40 | 100/2300 | 500/1400-1600 | 2 | 4.5 | 
| WP4.150E40 | 110/2300 | 550/1400-1600 | 2 | 4.5 | 
| WP4.165E40 | 121/2300 | 600/1400-1600 | 2 | 4.5 | 
| WP4.165 | 121/2300 | 600/1400-1600 | 2 | 4.5 | 
| WP4.135E40 | 100/2300 | 500/1300-1800 | 2 | 4.5 | 
| WP4.150E40 | 110/2300 | 550/1300-1800 | 2 | 4.5 | 
| WP4.165E40 | 121/2300 | 600/1300-1800 | 2 | 4.5 | 
| WP4.135E50 | 100/2300 | 500/1200-1600 | 2 | 4.5 | 
| WP4.150E50 | 110/2300 | 550/1200-1600 | 2 | 4.5 | 
| WP4.165E50 | 121/2300 | 600/1200-1600 | 2 | 4.5 |