The CIMAC World Congress on Combustion Engine Technology for Ship Propulsion, Power Generation and Rail Traction was held from May 13-16 in Shanghai. The Technical Program of this CIMAC Congress reflected a host of current hot topics, such as CO2 reduction or emissions. It consisted of 193 paper presentations, flanked by 68 poster presentations, from 20 countries – with strong participation from China. The huge amount of technical contributions was based on more than 400 abstracts which have been submitted to CIMAC in preparation of the congress, more than ever before.