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Weichai Natural Gas Engine WP13NG430E61 for tractor truck dump truck City Buses

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  • WP13NG430E61

  • weichai

发动机海报

The Weichai WP13NG430E61 is a state-of-the-art 6-cylinder, in-line, four-stroke natural gas engine renowned for its exceptional power output, superior fuel efficiency, and low emissions . With a substantial 12.54-liter displacement and featuring turbocharged and intercooled aspiration, this engine is engineered to deliver consistent and robust performance for heavy-duty vehicles . Its advanced design, based on a mature and robust platform, makes it a trusted and reliable power source for demanding transportation applications .

 Key Technical Specifications

For a quick overview, here are the core specifications of the WP13NG430E61 engine:

Parameter Specification
Configuration In-line, 6-Cylinder, 4-Stroke 
Aspiration Turbocharged and Intercooled 
Fuel Type Compressed Natural Gas (CNG) / Liquefied Natural Gas (LNG) 
Displacement 12.54 L 
Bore × Stroke 127 mm × 165 mm 
Rated Power/Speed 316 kW (430 HP) @ 1900 rpm 
Max. Torque/Speed 2000-2200 N.m @ 1000-1400 rpm 
Compression Ratio 11.6:1 - 12.5:1 (varies by specific model application) 
Emission Standard Euro V / China National Stage VI (Model dependent) 
Min. Fuel Consumption 185 g/kW·h 
Weight (Net Dry) Approx. 1000 - 1050 kg 

Primary Applications & Equipment

The Weichai WP13NG430E61 engine is built to be a dependable and efficient power source for heavy-duty natural gas vehicles . Its primary applications include:

  • Heavy-Duty Tractor Trucks: It is a key power source for 6x4 tractor trucks designed for long and medium-distance towing .

  • Dump Trucks: This engine is also applied in heavy-duty dump trucks, providing the necessary torque for challenging loads .

  • City Buses: The engine series is also applied in city buses, including 18-meter models .

Core Technologies & Key Features

  • Lean Combustion + DOC Technology: The engine utilizes an efficient lean combustion system combined with a Diesel Oxidation Catalyst (DOC) . This technology ensures precise air-fuel mixture control, leading to optimized combustion, reduced fuel consumption, and lower emissions .

  • Electronically Controlled Single Point Injection (SPI) System: This system guarantees precise fuel control and management, contributing to the engine's excellent fuel economy and consistent performance .

  • High Torque at Low RPM: The engine delivers a massive torque of over 2000 N.m at a low RPM range (starting from 1000-1100 rpm) . This provides strong starting acceleration and superior pulling power, which is crucial for heavy-duty hauling .

  • High Reliability Design: The engine incorporates the latest OH6 fuel system and features an integrated ignition coil and spark plug design, which enhances reliability by omitting the high-voltage line and avoiding related conductivity issues on rainy days .

  • Knock Monitoring: The engine is equipped with a knock monitoring system, which helps prevent faults such as piston burnout caused by fuel issues, thereby enhancing durability and operational safety .


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KELUO is a company of machinery, engines, used equipment and spare parts founded by Hanhan in combination with HANJIU, Elephant in the industry.
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