The phrase "of the engine" means something that belongs to or is connected with the engine. It refers to parts, components, or actions related to the operation or functioning of the engine.Full definition
A wide range of engine choices bring different personalities, but they're all refined and engaging. (consumerguide.com)
The 3 - Series offers a wide range of engine choices. (consumerguide.com)
The company has been experimenting with hydrogen versions of the engine for the past few years and has a small fleet of prototype models on the roads for real - world tests. (topspeed.com)