The largest reciprocating IC are low speed CI engines of this kind; They are really used for maritime propulsion (see maritime diesel engine) or electric powered electricity generation and accomplish the highest thermal efficiencies amongst interior combustion engines of any variety. Some diesel-electrical locomotive engines operate about the two-stroke cycle. https://accountant10863.wikistatement.com/3981206/best_mentoring_software_things_to_know_before_you_buy