Commercial Propulsion Engines

3512E

The 3512E marine propulsion engine is now available in a wide range of ratings that meet U.S. EPA Tier 4 Final and IMO III marine emissions regulations. As the commercial marine industry adjusts their operations to meet U.S. EPA Tier 4 Final and IMO III emissions standards, Caterpillar Marine has introduced a solution built to maximize performance while meeting regulations. Caterpillar’s combination of a fuel-efficiency-optimized engine and a selective catalytic reduction (SCR) aftertreatment system is a solution that not only reduces NOx emissions, but can also lower a customer’s owning and operating costs in the process.

STANDARD EQUIPMENT

AIR INLET SYSTEM

• Corrosion-resistant aftercooler core

CONTROL SYSTEM

• Dual A5 engine control modules with electronic unit injection and low pressure fuel system

EXHAUST SYSTEM

• Dual turbochargers with water-cooled bearings and heat shields

GENERAL

• Vibration damper and guard
• Meets SOLAS regulations

FUEL SYSTEM

• Duplex Fuel and Oil Filtration

COOLING SYSTEM

• Auxiliary fresh water pump
• Gear Driven, centrifugal jacket water pump with 40% more capacity