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Cummins 340HP 6 Cylinger L340 30 Diesel Engine Assembly Used in Heavy-duty Truck

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  • L340 30

  • Cummins

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Cummins L340 30 Diesel Engine: Robust Power for Demanding Haulage

The Cummins L340 30 is a heavy-duty diesel engine that delivers reliable, high-torque performance for demanding commercial vehicles. Part of the Cummins L series and manufactured by Dongfeng Cummins Engine Co., Ltd. (DCEC), this 8.9L, in-line six-cylinder engine is engineered for durability and efficiency, making it a trusted power source for a variety of on-road and vocational applications.

Key Specifications

Feature Specification
Engine Model L340 30
Configuration In-line 6 cylinder, 4-stroke
Displacement 8.9 L
Rated Power 250 kW / 340 HP @ 2200 rpm
Peak Torque 1350 N.m @ 1400 rpm
Aspiration Turbocharged & Intercooled
Emission Standard Euro III / China National III

Target Equipment & Core Applications

The L340 30 is primarily designed for heavy-duty trucks and construction vehicles requiring robust and dependable power.

  • Heavy-Duty Trucks: An ideal powerplant for tractor units and rigid trucks used in regional haulage and freight transport. It is commonly specified for models like the Dongfeng DFL4251A9 6x4 tractor.

  • Construction & Vocational Vehicles: Provides reliable power for various construction vehicles, including dump trucks and specialized haulers operating in demanding site conditions.

  • Other Applications: Its reliable platform also makes it suitable for adaptation to other equipment such as crane trucks.

Core Technologies & Competitive Advantages

  1. Durable Engineered Structure: Designed for severe duty cycles, it features a robust structure with forced-cooled articulated pistons that can withstand extreme mechanical and thermal loads, offering strength comparable to heavier engines.

  2. Efficient Combustion System: The engine utilizes a centrally located fuel injector and a symmetrical combustion chamber. This design promotes more uniform air-fuel mixing in the cylinder, leading to cleaner, more complete combustion for improved fuel economy and lower emissions.

  3. Advanced Air-Handling Architecture: Equipped with a four-valve-per-cylinder design, it improves airflow for greater power output and more thorough air burning. Combined with turbocharging and intercooling, this technology enhances low-speed torque, acceleration response, and climbing capability.

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