IMO Tier III compliant Wärtsilä X72 Engine Passes Test

Winterthur Gas & Diesel (WinGD) and its two-stroke engine manufacturer Hyundai Heavy Industries - Engine & Machinery Division (HHI-EMD) announced the successful testing and delivery of their first IMO Tier III compliant Wärtsilä X72 diesel engine.

 

Built at HHI-EMD’s works in Ulsan Korea, the six-cylinder, Wärtsilä X72 diesel engine employs a compact, pre-turbocharger selective catalytic reduction (SCR) system. The system is supplied by HHI-EMD and at a shop test on 23rd March 2016, it demonstrated its ability to reduce the engine’s NOx emissions below the limitations of IMO Tier III for vessels operating in ECAs. Likewise at the shop test, the Wärtsilä X72 engine demonstrated its compliance with the NOx limits of IMO Tier II without exhaust after treatment. 

 

Commenting on its pre-turbocharger SCR system, HHI-EMD notes that locating the SCR catalyst in the hotter exhaust gases before the turbocharger turbine is designed to reliably achieve the temperature level required for the NOx-reducing reaction of the exhaust gases with the urea reducing agent. 

 

Following the test, the 15,080 kW rated engine (74.7 rpm) was delivered to HSHI (Hyundai Samho Heavy Industry) in Samho-Eup, Yeongam-Gun, South Korea, where it will be installed into a 159,000 DWT Crude Oil Products Tanker.