Does a new engine have an engine number?

[Serena]

New engines typically do not have an engine number. Here is detailed information about automotive engines: 1. Overview: An automotive engine is the device that provides power for a vehicle, determining its power performance, fuel economy, stability, and environmental friendliness. Depending on the power source, automotive engines can be classified into diesel engines, gasoline engines, electric vehicle motors, and hybrids, among others. 2. Additional Information: Common gasoline and diesel engines are both types of reciprocating piston internal combustion engines, capable of converting the chemical energy of fuel into the mechanical energy of piston movement to output power. Gasoline engines have high rotational speeds, are lightweight, produce less noise, are easy to start, and have low manufacturing costs. Diesel engines have a high compression ratio, excellent thermal efficiency, and better fuel economy and emission performance compared to gasoline engines.