Short for the Jacobs Engine Brake, a secondary braking system used on large deisel trucks like fire engines. Used with
automatic transmissions, usually on trucks that
carry a heavy
load. The system uses the compression of the engine as resistance to slow the drivetrain. Beneficial because it reduces wear
and overheating problems with
brakes. Causes the engine to make a great deep sound that
can be heard all around.
I would have burned the brakes right off that rig if it weren't for the Jake
We were going down
the hill in this
neighborhood and when the Jake
Brake kicked, the sound set everyone's car alarm off.