The Japan Times reported that the country’s Ministry of Land, Infrastructure, Transport and Tourism raided a plant operated by Kawasaki Heavy Industries after the company admitted to misconduct that involved two-stroke diesel engines used in commercial marine vessels. 

The day before the raid, Kawasaki Heavy released a notice that revealed wrongdoing in nitrogen oxide emissions verification tests for its ship engines. The notice stemmed from an internal investigation that found data had been altered for 673 two-stroke diesel engines manufactured from 2000 onward.

Kawasaki Heavy’s investigation determined that the company had manipulated testing equipment to alter shop trial fuel consumption rates. These actions made sure the figures met the permissible range of customer specifications and minimized data inconsistencies.

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