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Fuel System

Electronic Unit Injector fuel system featuring 10-20 percent higher injection pressure than other 3500 Family engines

Control System

Caterpillar ADEM II Electronic Engine Control/Monitoring System that provides infinitely variable injection timing and a state-of-the-art monitoring and protection system with self-diagnosing electronic sensors

fuel efficiency and lower levels of gaseous and visible emissions

“Deep Crater/Low Crevice Volume” twopiece articulated piston design with forged steel crown and cast aluminum skirt that enhance combustion efficiency to provide improved fuel efficiency and lower levels of gaseous and visible emissions

Larger diameter camshaft

Larger diameter (98 mm vs. 92 mm bore) camshaft for higher injection pressures, shorter injection durations, and less gear train torsional vibration

Strengthened fuel injection actuation system and rear gear train

Strengthened fuel injection actuation system and rear gear train to maintain reliability and durability while providing higher injection pressures

Center-mounted low inertia turbochargers

Center-mounted low inertia turbochargers (four on 3512B and 3516B; two on 3508B) on EPG models

rear mounted turbochargers

Dual rear mounted turbochargers on all marine configurations

Separate circuit or sea water aftercooling

Separate circuit or sea water aftercooling to supply the optimum temperature air to the combustion chamber to reduce emissions and fuel consumption and maximize power output

Streamlined intake and exhaust manifolds

Streamlined intake and exhaust manifolds to reduce parasitic pumping losses and increase combustion efficiency

Thermo-laminated heat shields

Thermo-laminated heat shields on all marine configurations to maintain surface temperatures below Marine Classification Society regulations and to retain more exhaust gas energy for increased turbocharger performance

Redesigned aftercooler-to-intake manifold joints

Redesigned aftercooler-to-intake manifold joints that use formed elastomeric seals and substantially fewer fasteners to give superior sealing characteristics and easier serviceability

easy connection of Caterpillar Engine Technician electronic service tool

Pin-type connector for easy connection of Caterpillar Engine Technician electronic service tool which delivers superior diagnostic capability to determine exact causes of engine faults

Formed elastomeric seals replace gaskets on rocker arm bases

Formed elastomeric seals replace gaskets on rocker arm bases eliminating gasket relaxation to maintain consistent dimensions for valve lash and injection settings and nuisance-type oil leaks.

Overview

The 3516B marine propulsion engine includes the Advanced Diesel Engine Management System II, Control Monitoring Protection System, Customer Communication Module, and Digital Voltage Regulator. Benefits include improved fuel economy, reduced visible and gaseous emissions, enhanced diagnostic and monitoring capabilities, and increased rated output with no reduction in reliability.

Power Rating

Units:
Power Range 1650-3000 bhp (1230-2237 bkW) 1650-3000 bhp (1230-2237 bkW) Less

Engine Specifications

Speed Range 1200-1800 rpm 1200-1800 rpm Less
Emissions IMO I IMO I Less
Aspiration TTA TTA Less
Bore 6.7 in 170.0 mm Less
Stroke 7.5 in 190.0 mm Less
Displacement 4210.0 in3 69.0 L Less
Rotation (from flywheel end) Counterclockwise or Clockwise Counterclockwise or Clockwise Less
Configuration Vee 16, 4-Stroke-Cycle Diesel Vee 16, 4-Stroke-Cycle Diesel Less

Dimensions & Weights

Minimum Dry Weight 17185.0 lb 7795.0 kg Less
Minimum Length 131.9 in 3349.0 mm Less
Maximum Length 146.7 in 3725.0 mm Less
Minimum Height 69.0 in 1753.0 mm Less
Maximum Height 82.3 in 2091.0 mm Less
Minimum Width 67.0 in 1703.0 mm Less
Maximum Width 80.8 in 2053.0 mm Less
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Extended Warranty and Support

Caterpillar offers a variety of integrated solutions to help you protect your investment, minimize owning and operating costs, and maximize up-time.

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