Which country is the Atkinson engine from?

[OCassandra]

The Atkinson engine was invented and manufactured in the United States. The Atkinson cycle is a high-compression-ratio, long-expansion-stroke internal combustion engine cycle. The longer expansion stroke more effectively utilizes the residual high pressure of exhaust gases after combustion, resulting in high fuel efficiency. However, traditional Atkinson cycle engines have weaker low-speed torque output. Below is relevant information about the Atkinson engine: 1. Features: The most notable characteristic of the Atkinson engine is that its expansion ratio is greater than its compression ratio. The longer expansion stroke allows more effective utilization of the high pressure still present in exhaust gases after combustion, leading to high fuel efficiency. 2. Imported and Domestic: Atkinson engines are available both as imported and domestically produced. Originally, most engines used the Otto cycle technology. With the advancement of automotive technology, Atkinson invented the technology where the expansion ratio is greater than the compression ratio, known as the Atkinson cycle technology. In China, there are also studies and applications of this technology, such as engines produced by Changan.