Downshift or exhaust brake?
I was just thinking after reading a post about gas vs diesel trucks where somebody mentioned they liked diesel because of the exhaust brake. I've never had a diesel, always gas. If I come up to a long...
Forum Discussion
Lynnmor wrote:ShinerBock wrote:
But your Jake brake is an engine brake that utilizes the opening of exhaust valve during the compression stroke alowing that air to speed up your turbine and his exhaust brake utilizes a sliding nozzle to block exhaust going to the turbine.
A Jake brake is simply a compression release. A diesel engine has little braking because the energy to compress the air is immediately recovered on the down stroke. A compression release prevents that recovery of energy.
I beleive that is what I said. However, I was also stating why he is seeing higher boost with an engine brake due to the air being forced out during the compression stroke spinning the turbine even faster.
