Wärtsilä 46TS

Engine Summary


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Engine Information

Engine Family: Wärtsilä 46TS

Engine Type: Dual Fuel Engine

Description

The Wärtsilä 46TS is a high‑output medium‑speed diesel engine designed for demanding marine applications requiring high efficiency, reliability, and stable performance. Its two‑stage turbocharging system provides enhanced combustion stability, improved thermal efficiency, and consistent power delivery across a wide operating range, making it well suited for vessels with high propulsion loads and continuous operation profiles. The engine’s stable exhaust flow and predictable temperature characteristics also support effective integration of advanced particulate‑filtration and NOx‑reduction technologies.

Learn more on the official Wärtsilä website

Specifications


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Dimensions & Weight


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Compliance


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Accessories

Standard Accessories

Engine‑mounted pumps Standard lubrication‑oil, fuel‑oil, and cooling‑water pumps installed on the engine for continuous operation.

Cooling system components Jacket‑water and lube‑oil heat exchangers, charge‑air coolers, and seawater‑cooled interfaces.

Integrated filtration Engine‑mounted full‑flow lubrication‑oil filters and fuel‑oil filtration units.

Pneumatic starting system Air‑start system including air receivers, distributor, and starting valves.

Two‑stage turbocharging Complete factory‑installed two‑stage turbocharging arrangement with charge‑air cooling.

Standard instrumentation Temperature, pressure, and speed sensors, including basic engine‑control and safety‑shutdown functions.

Installation‑ready configuration Delivered with all essential accessories required for commissioning and integration into marine propulsion or auxiliary systems.

Optional Accessories

Advanced automation modules Extended engine‑control interfaces, remote‑diagnostics packages, and enhanced sensor suites for performance tracking and predictive maintenance.

Fuel‑conditioning upgrades Optional fuel homogenizers, separators, pre‑heating units, and enhanced filtration systems for improved reliability on heavy fuel oils.

Cooling & lubrication options Alternative heat‑exchanger arrangements, redundant pump systems, and upgraded filtration units for harsh or high‑duty operating environments.

Exhaust‑aftertreatment interfaces SCR‑ready configurations, exhaust‑gas measurement ports, and optimized interfaces for particulate‑filtration and NOx‑reduction systems.

Vibration‑damping & acoustic packages Resilient mounting systems, vibration‑damping solutions, and acoustic insulation packages for noise‑sensitive installations.

Auxiliary starting systems Additional pneumatic or hydraulic starting arrangements for redundancy or class‑specific requirements.

Custom foundation & coupling solutions Tailored foundation designs, flexible couplings, and installation‑specific adaptations for diverse vessel layouts.

Warranty


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Additional Notes

Continuous‑duty suitability Designed for long‑term operation in demanding marine environments, suitable for vessels with high annual operating hours and continuous‑duty propulsion profiles.

Aftertreatment integration Two‑stage turbocharging provides elevated charge‑air pressures and stable exhaust flow, offering favorable conditions for SCR and particulate‑filtration systems.

Installation considerations Sufficient space for exhaust routing, heat‑recovery systems, and service access should be planned during vessel‑design and integration phases.

Monitoring recommendations Regular monitoring of exhaust temperatures and differential pressures is recommended to ensure optimal engine and aftertreatment performance.

Service & lifecycle support Supported by Wärtsilä’s global service network, providing spare parts, technical assistance, and lifecycle services to maintain long‑term operational reliability.