摘要 : In mid-February, Indiana-based engine manufacturer Cummins announced that it would look to develop a range of engines which would be 'fuel agnostic'. In practise, this translates to a common engine block and interchangeable heads ... 展开 In mid-February, Indiana-based engine manufacturer Cummins announced that it would look to develop a range of engines which would be 'fuel agnostic'. In practise, this translates to a common engine block and interchangeable heads using diesel, natural gas and hydrogen (H_2). A number of big OEMs are developing engines to use the H_2, including Deutz, JCB and now Cummins. Of course, there's a lot to like, particularly the reduced tailpipe emissions. But as a fuel, hydrogen is not always quite as angelic as it might first appear, relating to how it is produced. A recent report from industry consultancy IDTechEx looked to analyse well-to-wheel grams of CO_2 per km emissions related to fuel cell passenger cars, referencing the results against tank-to-wheel emissions of cars with internal combustion engines. 收起