This is a summary of the text:
The text is a transcript of a video that explains the differences between Otto, Atkinson and Miller cycle engines. It covers the history of their development, their advantages and disadvantages, and their applications in modern vehicles. The main idea is that Otto cycle engines compress the air-fuel mixture before igniting it, which increases power but also wastes some energy. Atkinson cycle engines reduce the compression stroke to improve efficiency, but lose power and responsiveness. Miller cycle engines use a supercharger or an electric motor to compensate for the power loss, while also using variable valve timing to switch between cycles depending on the driving conditions. The text also mentions some examples of vehicles that use these engines, such as the Mazda Millennia, the Toyota Prius and the Mazda Skyactiv X. The text concludes by saying that the naming conventions are not very important, as long as the concept behind the engines is understood.
Here are the key facts extracted from the text:
1. A four-stroke engine does intake, compression, combustion and exhaust.
2. An Atkinson and a Miller cycle engine differ from an Otto cycle engine by having a shorter compression stroke than the power stroke, which increases efficiency.
3. The Otto cycle engine was invented in 1876 by Nicolaus August Otto, with the help of Gottlieb Daimler and others.
4. The Atkinson cycle engine was invented in 1887 by James Atkinson, who used a complex linkage system to achieve variable stroke lengths.
5. The Miller cycle engine was patented in 1957 by Ralph Miller, who used a supercharger and variable valve timing to achieve the same effect as Atkinson.
6. The Mazda Millennia and the Toyota Prius are examples of cars that use the Miller and Atkinson cycles respectively.