"engineering prototype" is a correct phrase and can be used in written English.
It refers to a functional model or demonstration of a product or design that is used for testing and development in the field of engineering. Example: The engineering prototype of the new electric car was put through rigorous testing before it was approved for mass production.
Scanning the dashboard for unmarked switches, mysterious buttons and puzzling controls, I looked for the inevitable loose ends of an engineering prototype being hustled toward production.
Only a couple of stray electrical connectors hinted at the differences distinguishing this engineering prototype from thousands of other Auras on road.
I also got a look at a nonworking engineering prototype that looks more like a bulky pair of sports sunglasses with a battery pack attached.
The paper deals with the process of engineering prototype development of the piston hybrid energy machine.
And the engineering prototype of helium blower with the AMB has been produced.
An engineering prototype is developed based on the above research works and site conditions.
However, many of these have been limited to engineering prototypes.
We used two-photon polymerization (TPP) nanolithography to fabricate the designed engineering prototypes (flat, prism and foil) for experimental investigations.
The system can be efficiently used for robotic and control engineering prototyping and education.
Six teams, with about 25 students and two faculty advisers per group, operated like a small company, incorporating engineering, prototyping, marketing, and, of course, bureaucracy.
The operating adhocracy carries out innovative projects directly on behalf of its clients, usually under contract, as in a creative advertising agency, a think-tank consulting firm, a manufacturer of engineering prototypes.
