Consultancy confirms engine emissions strategy
Technomot’s engine aims to meet IMO Tier 3 with no after-treatment devices
UK engine consultancy Technomot says it is working on marine engine designs to achieve the IMO Tier 3 emissions standard with no after-treatment.
Technomot was created in 2004 after founder and managing director Dr Esmail Karimi left MAN B&W, where he led the design and launch of the V28/33D marine engine.
The company has subsequently designed and developed a family of heavy-duty diesel, gas and dual fuel engines. Following the completion of a three-year, focused research programme on NOx emissions control for heavy-duty diesel engines, Technomot designed and built its own single-cylinder research engine equipped with an electronically-controlled high pressure common rail fuel injection system.
Technomot says it has now completed a comprehensive test programme on this engine to validate the findings of the research programme and confirm its emissions control strategy. The test matrix included a wide range of parameters such as compression ratio, injection and valve timing, boost pressure, BMEP, rate-shaping and EGR. However, the main input providing a low NOx baseline platform for optimisation is in the design of the engine combustion system, which, naturally, remains confidential.
Technomot has now established its strategy on the most cost-effective method of meeting the stringent exhaust emissions levels legislated and planned up to the year 2020 with what is claimed to be class-leading fuel consumption. The methodologies deployed will be applicable to new engine designs of any cylinder configuration, and for the upgrade of current engines to meet emissions requirements.
The strategy ensures that the creation of NOx is controlled ‘at source’, in the combustion chamber, eliminating the need for costly after-treatment devices.
Karimi says: "Having our own single-cylinder engine has given us the opportunity to extend our knowledge about the combustion process. The test programme has validated and, on some parameters, even exceeded our performance predictions."
The company is currently working with a number of overseas clients to apply the outcome of the research programme to marine engines from 500kW to 5,000kW.
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