Thread: Bourke Engine
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Old 01-01-2021, 03:48 PM   #44 (permalink)
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Found a little more:

From the link

This combustion process is based on the direct injection of fuel into the cylinder as a supercritical fluid. Supercritical fuel achieves rapid mixing with the contents of the cylinder and after a short delay period spontaneous ignition occurs at multiple locations.

(Not as a vapor, but it is likely to flash into vapor much faster and more completely…)

The injection-ignition process is independent from the overall air/fuel ratio contained in the cylinder and thus allows the engine to operate un-throttled.

(This suggests using the fuel injection much like the diesels system to control engine RPMs and Power by the injection only, note no engine vacuum..)

Additionally, the stratified nature of the charge under part load conditions reduces heat loss to the surrounding surfaces, resulting in further efficiency improvements. The short combustion delay angles allow for the injection timing to be such that the ignition and combustion events take place after TDC. This late injection timing results in a fundamental advantage in that all work resulting from heat release produces positive work on the piston. Other advantages are the elimination of droplet burning and increased combustion stability that results from multiple ignition sources.

( These are the same claims of running an ICE on pure vapor….)


PS here is the history:

On October 25, 2010, Transonic presented a technical paper detailing its novel injection ignition combustion process at the SAE 2010 Powertrain Fuels and Lubricants Meeting in San Diego CA.[1]

On September 1, 2010, the World Economic Forum announced the company as a Technology Pioneer for 2011.[2]

As of March 2015, Transonic's website was defunct, and in April 2015 the facilities were up for auction.[3]
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