What is another word for four-stroke internal-combustion engine?
Pronunciation: [fˈɔːstɹˈə͡ʊk ɪntˈɜːnə͡lkəmbˈʌst͡ʃən ˈɛnd͡ʒɪn] (IPA) 
A four-stroke internal-combustion engine is a type of engine that undergoes four processes - intake, compression, combustion, and exhaust - to convert fuel into energy. Some common synonyms for this type of engine include four-cycle engine, Otto-cycle engine, gasoline engine, and spark-ignition engine. These types of engines are widely used in automobiles, motorcycles, and small machinery. They are typically more fuel-efficient and environmentally friendly than their two-stroke counterparts. However, they require more complex engineering and maintenance. Overall, the four-stroke internal-combustion engine remains a crucial component of modern transportation and industry.
