【スカイアクティブZは名機2.2Dを超えるのか】マツダが目指す究極の内燃機関 Zとはなにか

The main points of the video are summarized in five bullet points. The ultimate engine "Skyactiv-Z" The "Skyactiv-Z" that Mazda is developing is positioned as the ultimate internal combustion engine with the potential to surpass the 2.2L diesel engine, which is considered a masterpiece. It combines gasoline and diesel technologies and aims to solve the issues of power, fuel efficiency, and cost that its predecessor "Skyactiv-X" had. Evolved core technology "SPCCI" The core is "SPCCI (spark-controlled compression ignition)" technology, which realizes diesel-like compression ignition in a gasoline engine. It is speculated that the Z engine aims to achieve a virtually super lean burn (ultra-lean burn) over a wider range of revolutions by mixing a large amount of EGR (exhaust gas recirculation) into the theoretical air-fuel ratio (lambda 1) mixture. Enhanced hybrid system It will evolve from the conventional mild hybrid to a more powerful hybrid with a motor placed between the engine and transmission. This will allow the motor to powerfully assist the torque at low speeds, where the engine is weak, and the supercharger installed in the Skyactiv-X will be eliminated. Large displacement and "heat shielding technology" In order to regularly use the SPCCI range, where the engine operates most efficiently, the displacement will be expanded to 2.5L. In addition, "heat shielding (insulation) technology" will be introduced as the final important piece in pursuit of ultimate efficiency, which applies a special coating to the pistons and cylinders to maximize the conversion of combustion energy into kinetic energy. Expectations to surpass the 2.2D Mazda North America executives have stated that the Skyactiv-Z will perform at least as well as a 2.5L turbo engine. Since this turbo engine has similar specifications to the Japanese 2.2L diesel, expectations are high that the Z will actually achieve performance that exceeds that of a diesel. 0:00 Opening 0:52 Skyactiv Z, the final form 1:41 The biggest breakthrough, SPCCI 2:16 Why do we aim for compression ignition in gasoline engines? 4:32 Why only Mazda has achieved compression ignition 6:33 How does SPCCI explode? 7:33 Skyactiv X's three combustion modes 10:46 Four new innovations that make Skyactiv Z possible 12:21 What is super lean burn using Lambda One combustion? 14:00 Adopting P2 parallel hybrid 16:34 Expanding displacement from 2L to 2.5L 17:58 The last piece, heat shielding technology 19:07 Will the Z really surpass the D? 21:28 Ending Subscribe here    / @evx   Hello! I'm Koichi Sato, a car writer. This channel introduces new car information, technical commentary, industry trends, etc., focusing on information on xEV and CASE. Sato Koichi (Writer Sato) After working in the editorial department of an automotive media and an IT company, he left his company in 2018 and became an independent automotive writer. He focuses on reporting on EV and CASE fields. Member of the Japan Automobile Journalists Association https://www.ajaj.gr.jp/members/sato-k... Contact email address [email protected] Twitter account @lens_finder List of articles written by Sato Koichi https://31051.hatenablog.com/entry/20...