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) | 
|---|---|---|---|---|
| WP7.240E31 | 176/2100 | 1050/1200-1600 | 4 | 7.47 | 
| WP7.270E31 | 199/2100 | 1160/1200-1600 | 4 | 7.47 | 
| WP7.300E31 | 220/2100 | 1250/1200-1600 | 4 | 7.47 | 
| WP7.240E43 | 176/2100 | 1050/1200-1500 | 4 | 7.47 | 
| WP7.270E43 | 199/2100 | 1160/1200-1500 | 4 | 7.47 | 
| WP7.300E43 | 220/2100 | 1250/1200-1500 | 4 | 7.47 | 
| WP7.240E51 | 176/2100 | 1050/1200-1600 | 4 | 7.47 | 
| WP7.270E51 | 199/2100 | 1160/1200-1600 | 4 | 7.47 | 
| WP7.300E51 | 220/2100 | 1250/1200-1600 | 4 | 7.47 | 
| WP7.270E61 | 199/2100 | 1200/1200-1600 | 4 | 7.47 | 
| WP7.270E61A | 199/2100 | 1000/1200-1600 | 4 | 7.47 | 
| WP7.300E61 | 220/2100 | 1300/1200-1600 | 4 | 7.47 |