The Ge 7fdl16 is a powerful 16-cylinder diesel engine designed for use in diesel-electric locomotives. Developed by General Electric, this robust engine boasts a design and rating based on rigorous laboratory testing and thousands of hours of real-world operation. This article provides a detailed overview of the GE 7FDL16, exploring its specifications, systems, and key components.
GE 7FDL16: Technical Specifications
The GE 7FDL16 is a four-stroke cycle, turbocharged diesel engine with 16 cylinders arranged in a 45-degree V configuration. Each cylinder has a 9-inch bore and a 10-1/2 inch stroke. The engine’s integral head and cylinder design allows for quick removal and maintenance. Key specifications include:
- Model: 7FDL16
- Gross Horsepower: 2750
- Number of Cylinders: 16
- Stroke Cycle: 4
- Cylinder Arrangement: 45° V
- Bore: 9 inches
- Stroke: 10-1/2 inches
- Idle Speed: 400 ± 15 RPM
- Full Speed: 1000 ± 4 RPM
- Overspeed Shutdown Trip Speed: 1100 ± 10 RPM
- Operating Temperature: 160 – 180°F
- Firing Order: 1R-11, 3R-3L, 7R-7L, 4R-4L, 8R-8L, 6R-6L, 2R-2L, 5R-5L
- Turbocharger: Single
| Parameter | Value |
|---|---|
| Hot Engine Alarm (ETS) Close | 200 ± 2°F |
| Hot Engine Alarm (ETS) Open | 193 ± 2°F |
| Engine Lubricating Oil Header Pressure (Idle) | Approximately 15 psi |
| Engine Lubricating Oil Header Pressure (Full Throttle) | Approximately 45 psi |
| Oil Pressure Shutdown (OPS) – Engine at Idle (40 Second Delay) | 10 – 14 psi |
| Oil Pressure Shutdown (OPS) – Engine above 1st Notch (No Delay) | 25 – 30 psi |
The 7FDL16 utilizes cast-iron pistons, valve seat inserts, and a Bendix fuel system. Its cylinder liners are chrome-plated and measure 3/16 inches thick.
GE 7FDL16: Engine Systems
The GE 7FDL16 incorporates several sophisticated systems to ensure efficient and reliable operation. These include:
- Governor: A self-contained, electro-hydraulic governor automatically regulates horsepower output at each throttle setting.
- Overspeed Protection: The engine automatically shuts down if the speed exceeds the maximum rated RPM by 10 percent.
- Cooling System: A gear-driven centrifugal pump circulates water through the engine, turbocharger, radiator, and lubricating oil cooler. A thermostatically operated flow control valve regulates water flow to maintain optimal engine temperature.
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- Fuel System: A motor-driven pump transfers fuel from the tank through filters to individual high-pressure fuel injection pumps for each cylinder.
- Lubrication System: A full-pressure system, powered by a gear-type pump, lubricates the engine. Low oil pressure triggers an automatic shutdown. The engine is equipped with a lubricating oil reservoir, filters, strainer, and a water-cooled oil cooler.
- Starting System: The engine is started using the traction generator powered by storage batteries.
GE 7FDL16: Key Components
The 7FDL16 features a robust construction with key components designed for durability and performance:
- Main Frame: A single-piece ductile cast iron casting reinforced with ribs and gussets provides exceptional strength and rigidity.
- Crankshaft: Forged from high-quality steel and nitride hardened, the crankshaft ensures long life.
- Bearings: Replaceable, precision-fit main and connecting rod bearings with steel backs and copper-lead alloy lining are utilized.
- Camshaft: Two forged high-alloy steel camshafts operate the engine valves and fuel pumps.
- Pistons: Special cast iron pistons with four compression rings and two oil rings provide durability and efficient operation.
Conclusion
The GE 7FDL16 engine represents a powerful and reliable solution for diesel-electric locomotive applications. Its robust design, advanced systems, and key components contribute to its long-lasting performance and efficiency. The engine’s comprehensive specifications and features make it a top choice for demanding railway operations.
