WP12NG series bus engine
weichai bus engines, with the displacement ranging from 2.3L to 12L and the power ranging from 88kW to 338kW, meet Euro V, Euro VI and other emission standards, and are applicable to various buses with a length greater than 5m such as school buses, passenger buses, private buses, touring buses, public buses, hybrid electric buses, and special buses. These new-generation products (WP2.3N/WP2.5N/WP3N/WP4.1N/WP4.6N) are applicable to rural public buses, minibuses, long-nose school buses, high-end MPVs, European light buses, and characterized by high reliability, strong power, fuel saving and environmental protection.
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Product parameters
| Mode | 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 | Application |
| WP12NG350E52 | 11.596 | 4 | 257/1900 | 1700/1200-1500 | ≤186 | Single point injection + DOC | 18m BRT Over 12m luxury coach |
| WP12NG380E51 | 11.596 | 280/1900 | 1700/1200-1500 | ≤186 | Single point injection + DOC | 18m BRT Over 12m luxury coach |
|
| WP12NG380E51 | 11.596 | 4 | 294/1900 | 1730/1200-1500 | ≤186 |
Single point injection + DOC
|
18m BRT Over 12m luxury coach |
Product advantages
- Emission standard: Euro V.
- Power performance: The four-valve structure effectively significantly improves output torque at low speed and maximum torque, as well as responsiveness during acceleration and start-up.
- Economy: The rated speed is reduced to 1,900rpm, the absolute fuel consumption in bench test is reduced by 3%, ensuring a wider economic speed range; 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.
- Reliability: The new-type ECU has a good resistance against heat, vibration and electromagnetic interference, and is directly installed on the engine.
WP12NG series bus engine
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