Description

The Doosan L126TIM 400 HP Marine Diesel Engine is a robust, high-performance engine designed to meet the demanding requirements of commercial and recreational marine applications. Known for its durability, fuel efficiency, and low emissions, this engine is ideal for both high-speed and heavy-duty marine tasks, providing reliable power in a compact package. Below is a detailed description of the Doosan L126TIM 400 HP Marine Diesel Engine:

Key Features:

1. Engine Configuration:
   • Type: Inline 6-cylinder, 4-stroke diesel engine.
   • Displacement: 12.6 liters (770 cubic inches).
   • Bore x Stroke: 126 mm x 145 mm (4.96 inches x 5.71 inches).
   • Aspiration: Turbocharged and aftercooled for enhanced air intake efficiency, improved combustion, and higher power output.
   • Construction: Built with high-strength materials to resist corrosion and wear, ensuring long-lasting performance even in harsh marine environments.
2. Power Output:
   • Rated Power: 400 horsepower (hp) at 2,100 RPM.
   • Maximum Torque: Approximately 1,950 Nm (1,440 lb-ft) at 1,400 RPM.
   • The L126TIM engine offers high torque and power output, making it well-suited for applications requiring consistent performance, such as workboats, fishing vessels, and high-speed cruisers.
3. Fuel System:
   • Fuel Type: Diesel, optimized for marine use, providing efficient combustion and long operational life.
   • Fuel Delivery System: Common rail fuel injection technology ensures precise fuel delivery for superior combustion efficiency, resulting in reduced fuel consumption and lower emissions.
   • Fuel Efficiency: Designed for efficient fuel consumption, making it cost-effective over extended periods of use while reducing environmental impact.
4. Cooling System:
   • The L126TIM engine is equipped with a seawater-cooled heat exchanger and a freshwater cooling loop for the engine’s internal components. This ensures the engine maintains optimal temperatures, even during demanding operations in warmer conditions, preventing overheating and improving engine longevity.
5. Exhaust System:
   • The engine features a turbocharged exhaust system with an aftercooler, which reduces exhaust gas temperature and improves overall engine efficiency.
   • The exhaust system is designed to meet global emissions standards, ensuring minimal environmental impact during operation.
6. Turbocharging and Aftercooling:
   • Turbocharger: The engine utilizes a turbocharger to improve intake air density, which enhances power and efficiency, especially during high-load operations.
   • Aftercooler: The air intake is further cooled by the aftercooler, which optimizes engine performance by reducing intake air temperature, promoting better combustion, and enhancing overall engine reliability.
7. Lubrication System:
   • The L126TIM uses a wet sump lubrication system, ensuring effective oil flow to critical engine components. This system helps reduce friction and engine wear, contributing to enhanced engine longevity and consistent performance.
8. Control and Monitoring:
   • Electronic Control Module (ECM): The engine features an ECM system that monitors and optimizes engine performance, ensuring fuel efficiency and protecting the engine from damage due to excessive load or overheating. The ECM provides diagnostic capabilities to help identify any issues early.
   • Marine-Grade Display/Controls: The engine can integrate with various marine electronic systems, offering real-time data on fuel consumption, engine load, temperature, and other important metrics for efficient operation.
9. Dimensions and Weight:
   • Length x Width x Height: Approximately 1,420 mm x 930 mm x 1,180 mm (55.9 inches x 36.6 inches x 46.5 inches).
   • Weight: Around 1,800 kg (3,968 lbs). The engine’s robust construction and compact design ensure it fits well within a wide range of marine vessels while offering high power output.
10. Noise and Vibration Reduction:
    • The engine is designed with advanced noise and vibration reduction technology, helping reduce operational noise and ensuring a more comfortable onboard experience, especially in vessels where passenger comfort is a priority.
11. Maintenance and Service:
    • The L126TIM is designed for ease of maintenance with readily accessible components. Regular maintenance tasks such as oil changes, filter replacements, and system checks are straightforward and cost-effective.
    • Long service intervals and reliable filtration systems reduce the need for frequent maintenance, lowering overall operating costs.
12. Environmental Compliance:
    • The engine meets international emissions standards, including IMO and EPA Tier 3 regulations, ensuring it produces fewer emissions and has a lower environmental impact.
    • The advanced turbocharging and aftercooling systems help achieve cleaner exhaust and better fuel efficiency, complying with stringent environmental regulations without sacrificing power.

Applications:

The Doosan L126TIM 400 HP Marine Diesel Engine is a versatile engine, suitable for a wide variety of marine applications, including:

• Commercial Vessels: Ideal for light-duty commercial workboats, tugs, ferries, and patrol boats, where reliability and consistent performance are crucial.
• Pleasure Craft/Boats: Perfect for high-performance yachts, sport fishing boats, and leisure craft, providing the necessary power for fast cruising and long-distance travel.
• Fishing Boats: Its high torque and fuel efficiency make it ideal for fishing operations, offering the power and durability needed for constant use in demanding conditions.
• Utility and Service Vessels: This engine is also suitable for service vessels, offshore support boats, and tenders, providing excellent power and efficiency for a range of specialized applications.

Performance Benefits:

• High Power and Torque: The engine’s 400 HP output, coupled with high torque at lower RPMs, ensures reliable performance even under heavy load conditions or when towing.
• Fuel Efficiency: The L126TIM delivers excellent fuel economy, lowering operating costs, especially for long-range or commercial vessels that require extended hours of operation.
• Compact and Robust Design: Despite delivering high horsepower, the engine maintains a compact footprint and is built with durable components for longevity, making it ideal for vessels that require space optimization without sacrificing performance.
• Low Emissions: Meets stringent environmental regulations with advanced emission-reducing technologies like turbocharging, aftercooling, and an efficient exhaust system, contributing to a cleaner environment.

Summary:

The Doosan L126TIM 400 HP Marine Diesel Engine combines high power, fuel efficiency, and environmental compliance to meet the needs of various marine operations. Its turbocharged, aftercooled design ensures peak performance, while the advanced fuel system optimizes combustion for reduced emissions and better fuel consumption. Whether you’re operating a commercial vessel, a high-performance yacht, or a fishing boat, the L126TIM provides reliable and cost-effective power. Its robust construction and ease of maintenance make it a great long-term solution for demanding marine environments, offering consistent performance and low operational costs.