Open Source Piston Engine Conceptual Design
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- Exhaust gas recirculation - reduces peak in-cylinder temperatures, reducing NOX [1]
- Electronic valves - eliminates need for camshaft and rockers, allowing higher simplicity, and 30% efficiency gain.
- DIY campless - [2]
- Camless engines are not yet available, outside of some large diesels. [3]
- Free piston engine - drives a working fluid directly, without crankshaft