WP3N 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 power products (RA/WP2.3N/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.
WP3N series bus engine
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 | Applicable model |
| WP3NQ140E50 | 3 | 4 | 103/3000 | 380/1400-2400 | 198 | Common rail + SCR | 6.6–9M school buses、7–7.5M passenger buses、high-end MPVs |
| WP3NQ150E50 | 3 | 4 | 110/3000 | 430/1400-2400 | 198 | Common rail + SCR | 6.6–9M school buses 、7–7.5M passenger buses、high-end MPVs |
| WP3NQ160E50 | 3 | 4 | 118/3000 | 480/1400-2300 | 198 | Common rail + SCR | 6.6–9M school buses、7–7.5M passenger buses、high-end MPVs |
| WP3NQ140E61 | 3 | 4 | 103/3000 | 380/1400-2400 | 198 | EGR + DOC + DPF + SCR | 6.6–9M school buses、7–7.5M passenger buses、high-end MPVs |
| WP3NQ150E61 | 3 | 4 | 110/3000 | 430/1400-2400 | 198 | EGR + DOC + DPF + SCR | 6.6–9M school buses、7–7.5M passenger buses、high-end MPVs |
| WP3NQ160E61 | 3 | 4 | 118/3000 | 480/1400-2300 | 198 | EGR + DOC + DPF + SCR | 6.6–9M school buses、7–7.5M passenger buses、high-end MPVs |
Product advantages
Economy
- Minimum fuel consumption is 198g/kW•h, which is (3-4)g/kW•h lower than that of competing products, ensuring a wider economic speed range; the standard two-speed electromagnetic fan can save 3% more fuel than the traditional rigid fan, ensuring a low accessory power consumption.
Power performance
- High torque (output power at medium/low speed range increased), strong power, and excellent starting acceleration performance.
Reliability
- The brand-new design is adopted, and B10 life is 500,000 km; the engine is designed and developed according to the large-displacement engine concept, and such important parts as turbocharger, starter and fuel system from excellent global suppliers are used to guarantee the reliability of key parts.
Comfort
- NVH is better than that of competing products, and outdoor noise in acceleration is 4dB(A) lower than that of competing products; the standard secondary balance mechanism reduces the vibration severity significantly.
Adaptability
- The vehicle can be equipped with various accessories such as alternator, power steering pump, A/C compressor, and air compressor, enriching the user’s choices.
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