Manufacturers of large engines and their components also have to pay increasing attention to the legal requirements for reducing emissions. Even heavy-duty highway engines need to be put to the test in order to provide the required exhaust gas quality in every performance range and to reduce fuel consumption. The International MTZ Conference "Heavy-Duty Engines" will take a practical look at system optimization and component development for compact engines. The conference will also show the progress made by engine manufacturers in the development of on-highway engines, among other things, in order to optimize drive systems in terms of fuel consumption and emissions.