Different Types of Engines

 https://www.rankred.com/different-car-engine-types/ 

https://www.engineeringstream.com/2023/07/how-many-types-engine-are-there.html 

https://dieselnet.com/tech/engine_alternatives.php 

Other types of engines include electric engines, which run on batteries and produce zero emissions, and hybrid engines, which combine both internal combustion and electric power. Additionally, there are hydrogen-powered engines and external combustion engines that use heat from an external source to generate motion.