NYK Line has stated that it would install a Variable Compression Ratio (VCR) technology on LNG-fuelled car carriers built by Shin Kurushima Dockyard Co., Ltd.
According to NYK Line, the first vessel is expected to arrive in 2026. The VCR system can optimise the air compression ratio in the engine combustion chamber based on engine power and LNG fuel qualities.
This ideal modification will increase fuel economy during operation by approximately 3 per cent in LNG gas mode and approximately 6 per cent in diesel oil mode.
NYK revealed that when decarbonised fuels are deployed, the system is also expected to play a major role in lowering greenhouse gas (GHG) emissions from current ships and boosting engine efficiency.
Mitsui E&S DU Co., Ltd. developed the VCR system in collaboration with Winterthur Gas & Diesel Ltd, a Swiss engine licensor, using its expertise and experience with big low-speed marine engines.