1 © Wärtsilä 02 February 2012 Presentation name / Author

Possibilities and Best Practices to Comply with

IMO TIER regulationsJanne Ahti

Area Manager North Europe 4-StrokeWärtsilä Finland Oy

POSSIBILITIESEngines built before year 2000

Majority of Wärtsilä engines can beupgraded to comply withIMO TIER I or TIER II

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POSSIBILITIESEngines built before year 2000

2-Stroke engines

• IMO certified Approved Method exists for all applicable 2-S engine types.– Complies with Nox limits set in TIER I.– Only few engine specific exceptions exist.– Ships that required to comply Marpol Annex VI need to fit an

Approved Method when such exist.

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POSSIBILITIESEngines built before year 2000

2 Stroke engine types concerned

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RTA 52RTA 58

RTA 62RTA 72

RTA 84RTA 96

POSSIBILITIESEngines built before year 2000

4-Stroke engines

• Most of the 4-S engine types have solutions to comply with Nox limits set in Tier I.

• Some engine types have solutions to comply even with Nox limits set in TIER II.

– IMO certified Approved Method does not currently exist for the 4-stroke engines in our portfolio.

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POSSIBILITIESEngines built before year 2000

Engines with solutions to comply with IMO TIER I:

Vasa32W32ZA40WN25F30

Stork SW280Stork F240

Wichman 28W38A2

Deutz (several types)

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Engine types with solutionsto comply withIMO TIER II:

Vasa32W32

Stork SW280Deutz628Deutz620

WN25

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Best Practices

BEST PRACTICEEngines built before year 2000

WÄRTSILÄ PREFERS TO UTILISE, CERTIFIED AND

APPROVED SOLUTIONS WITH PROVEN EFFECTS

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DEVELOPING SOLUTIONS TO OLDER ENGINES

New type ofengine

New version of same type

• New engines lead the technical development.

• Newest technology aims to comply with newest regulations.

Old engine

New version of same type

Tier I

Tier II

Finding ways to utilize new technology in older engines

DEVELOPING SOLUTIONS TO OLDER ENGINES

Benefits:

- Technology applied is used widely so it’s proven

- It’s technology Wärtsilä has chosen and thus Wärtsilä has committed to it. - Secures product support in future.- Further development

- Focus on best way to implement the new technology in old engine.- Allows concentrating on a specific feature (like Nox emissions)- Allows us to choose the best fit method of the latest technology

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BEST PRACTICES

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1. Solutions based on a ”parent engine”.• The features and performance are tested at controlled conditions in a testfacility or a test installation. • Solution and its performance is certified, documented and approved.• Sold in packages tailored for each installation based on a ”parent engine”.• Delivery scope might vary but effects are known• An EIAPP or equivalent certificate can be provided

2. Solutions tailored case by case.• Technology used is known and results are calculated or estimated.• Performance and features are confirmed afterwards• Sold and specified as case specific projects.

Why is this best practice

We think it’s best practice because:

1. The results are known at beforehand. They are certified, tested and documented.

• No need for onboard measurements. 2. Standardised solutions

• Security, product support, reliability.• Further development• Faster delivery times (no design needed)

3. Faster installation time• No need for measurements before and

after.

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Why is this best practice

We think it’s best practice because:

1. The results are known at beforehand. They are certified, tested and documented.

• No need for onboard measurements. 2. Standardised solutions

• Security, product support, reliability.• Further development• Faster delivery times (no design needed)

3. Faster installation time• No need for measurements before and

after.

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Challenges with measured data:

Comparability of results.• Test facilities vs onboard• Overhaul vs not overhauled engine

Challenges with onboard measurements:

Engine load• Difficult to define exactly onboard• dependent on weather conditions

Engine condition:• component condition influence engineoperation and thus emissions and fuel oilconsumption

Measurement equipment and arrangements:• Might increase measurement tolerances

Other things to consider:• Fuel oil consumption• Other emissions (Co2, Sox)

BEST PRACTICE SOLUTIONS

2-Stroke engines

Wärtsilä has available IMO certified Approved Method.

– Solutions are sold as packages. – Solution is easy to install and can be done during a port stay– No offhire or additional measurements are needed.– Certificate to prove the compliance.

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BEST PRACTICE SOLUTIONS

4-Stroke engines

Several Parent Engine based solutions exist. (Vasa32, W32, WN25, W38A)

– Solutions are sold as packages. Scope in each package is tailored to match a Parent Engine.

– Solutions are most feasible to do in connection of an engine overhaul.– Certificate to prove the compliance.

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Wärtsilä

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