Heavy Duty Engines
Reliable, Heavy-Duty Power When You Need It Most
Doosan PSI’s expanded engine line — PSI Heavy-Duty (PSI HD) — features heavy-duty engines with outputs spanning from 63 kW to 451 kW. The PSI HD line includes 8.1 liter engines, 11.1 liter engines, 14.6 liter engines, 18.3 liter engines, and 21.9 liter engines.
Ruggedized parts grafted onto hefty blocks ensure maximum performance and reliability in even the most demanding applications. All models are available as base engines or complete power systems with controls, fuel and cooling systems, and peripherals.
Our HD engines are fuel flexible — available in natural gas, propane (LP), and dual-fuel configurations — and feature automatic fuel changeover suitable for Emergency Standby Genset applications. In addition, all models are capable of burning low-BTU fuels like digester gas and landfill gas.
All PSI HD engines are available in emission certified packages.
|8.1-Liter | Request Info||11.1-Liter | Request Info||14.6-Liter | Request Info|
|18.3-Liter | Request Info||22-Liter | Request Info|
PSI HD engines are fully electronic with industrial ECU’s that integrate governor, ignition and air-fuel ratio control while providing full engine protection. Standard units feature 24v electrics with SAE flywheels and housings. The engine blocks feature wet, replaceable cylinder liners, 10.5:1 compression ratio and overhead valve modular cylinder head design. All turbocharged engines feature air-to-air intercooling and the most advanced controls featuring Full CANBUS communication and control using the SAE J1939 protocol. All engines also feature Mastertrak advanced telematic controls and monitoring systems.