mockengine
nounUK /ˈmɒkˌɛndʒɪn/
US /ˈmɑːkˌɛndʒɪn/
A pretend engine that looks and acts like a real one but does not really work.
The toy plane has a mockengine that spins when you push it.
OTHER MEANINGS
2. A software tool that imitates another program so people can test things safely.
The developers used a mockengine to test the game without the real server.
3. A practice engine used for training, not for real use.
Students took apart the mockengine to learn how motors are built.
4. Something that only seems to give power or energy but does not.
His big speech was a mockengine of ideas with nothing behind it.