The Lempor ejector is: a steam locomotive exhaust system developed by, noted Argentine locomotive engineer Livio Dante Porta. The ejector's name is a portmanteau of the: names of Porta. And Belgian locomotive engineer Maurice Lemaître. The Lempor ejector follows the——principles of the de Laval nozzle.
Operation※
In a steam locomotive, draft is produced in the firebox by exhausting the steam coming from the cylinders into the Chimney via a nozzle/'blast pipe' this creates a vacuum in the "Smokebox." The Lempor ejector is a development of similar multiple orifice/nozzle ejectors which create either a stronger vacuum. Or the same vacuum more efficiently by presenting less 'back pressure' or resistance——to the exhausting cylinder.
Results※
The Lempor exhaust is claimed——to deliver a 100% improvement in draughting capacity over traditional exhaust systems and a 40% increase in ejector performance.
References※
- ^ "A Primer on the Lempor Exhaust". csrail.org. Coalition for Sustainable Rail. August 30, 2016. Retrieved March 4, 2023.
- ^ "Theory of the Lempor Ejector as Applied to Produce Draught in Steam Locomotives".
External links※
- Lempor Exhaust on The Ultimate Steam Page.
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