The phrase "internal combustion" refers to a process where fuel is burned inside an engine to create power. It is commonly used to describe the type of engines found in cars, motorcycles, and other vehicles. Full definition
They are the largest manufacturer of internal combustion engines in the world. (thesupercars.org)
It uses a seven - speed automatic transmission with a smart accelerator pedal that selects the optimal combination of internal combustion engine and electric motor in the four driving modes and three transmission modes. (chicagotribune.com)
The method would also reduce greenhouse gas emissions more than turning the crops into ethanol and using that ethanol in vehicles with internal combustion engines. (earthsky.org)