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Cummins 6LTAA9.3 in-line six-cylinder diesel engine for Liugong CLG856H wheel loaders

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  • 6LTAA9.3

  • Cummins

发动机海报

The  Cummins6LTAA9.3 engine is a durable, turbocharged, 9.3-liter, in-line six-cylinder diesel engine widely used in  heavy-duty construction machinery like wheel loaders and for  power generation applications.  
Key Specifications
According to specifications from manufacturers that use this engine, the 6LTAA9.3 is known for its robust mechanical fuel system and high power output for its class.  
Specification  Details
Engine Type In-line 6 cylinder, 4-stroke diesel
Displacement 9.3 L (579 cu in)
Bore x Stroke 116 mm x 148 mm (4.58 in x 5.82 in)
Aspiration Turbocharged and Air-to-Air Intercooled (TCAC)
Gross Power Output Up to 162 kW (220 hp) @ 2,200 rpm (Industrial)
Peak Torque 890 - 980 N•m
Fuel System Bosch direct injection (mechanical fuel pump)
Weight (Wet) Approx. 750 kg (1,653 lbs)
Key Features & Benefits
  • Integrated Design: The cylinder block and cylinder head feature an integrated design, which reduces the potential for water or oil leakage and improves overall reliability.

  • Mechanical Fuel System: It utilizes a robust mechanical fuel system with Bosch direct injection, making it suitable for severe working conditions and ensuring durability and ease of maintenance.

  • High Efficiency: A 24-valve cylinder head (four valves per cylinder) design increases power, provides faster response, and contributes to improved fuel economy.

  • Durability: Key internal components, such as the forged steel camshaft and crankshaft, are engineered for high-strength, heavy-duty operation. 

Common Applications
The Cummins 6LTAA9.3 engine is primarily an off-highway industrial engine, powering various types of heavy machinery.  
  • Construction Machinery: Widely used in equipment such as wheel loaders (e.g., Liugong CLG856H), excavators, cranes, and bulldozers.

  • Power Generation: A variation, the 6LTAA9.5-G series, is a common power source for diesel generator sets, providing prime and standby power in industrial and commercial settings.

  • Agricultural Equipment: The engine platform is also utilized in some large-scale agricultural machinery. 

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