![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Liquid_feedback_fluidyne.svg/640px-Liquid_feedback_fluidyne.svg.png&w=640&q=50)
Fluidyne engine
Alpha or gamma type Stirling engine with one or more liquid pistons / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Stirling pump?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
A Fluidyne engine is an alpha or gamma type Stirling engine with one or more liquid pistons. It contains a working gas (often air), and either two liquid pistons or one liquid piston and a displacer.[1]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d1/Stirlingov_motor_schema.png/320px-Stirlingov_motor_schema.png)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Liquid_feedback_fluidyne.svg/640px-Liquid_feedback_fluidyne.svg.png)
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Fluidyne3.svg/640px-Fluidyne3.svg.png)
The engine was invented in 1969.[2] The engine was patented in 1973 by the United Kingdom Atomic Energy Authority.[3][2]