For our fifth class for Technology Project my group member Jal and I finally presented last weeks presentation on our idea for the technology project. The general consensus for our presented idea, is that it is a good idea, however there are a few issues to cover.
The first issue that was presented to us by the class was the issue of how the pressure would affect the pistons and combustion chamber area. Our technical advisor Anura quickly dismissed any doubts we had by telling us that the pressures of combustion in a diesel would be far greater than any pressures achievable by the exhaust brake.
Other issues included a by-pass area that had to be created so that exhaust gases can carry on flowing even though the exhaust flap is closed. This is to prevent the build up of exhaust pressure as exhaust gases would have no where to flow when the exhaust flap is closed. The last issue also refers to exhaust pressure in that making sure that the exhaust valve does not open because of the excessive pressure in the exhaust manifold. Other wise we have to make sure that the valve does not hit the piston if it is being held open. However due to clearances in the diesel engine this is extremely unlikely.
All in all I felt our first presentation went really well. Our technical advisor Anura gave us some good research ideas for the future including how to switch off fuel injectors when the exhaust brake is activated and brake pedal activation as the way for the exhaust brake to activate when the brake pedal is depressed.
This technology project is turning out to be far more involved then I first thought it would be but I am relishing in the idea of a challenge.
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