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Engine braking is done all the time, especially with a gasoline engine, which has a throttle to provide the resistance to piston movement. The diesel engine is "wide open" and needs a valve of some sort to offer this resistance to piston movement, either intake or exhaust. Examples are the...

There are lots of numbers out there, need to check the multifuel engine specifically, here is one example: " An engine brake relies on exhaust back pressure to slow down the truck. An engine brake will not harm the Cummins ISB 5.9L engine. One limitation, however, is that the engine brake must...

Hmmm...more like 60-70 lb...might check on it again to make sure....

Try this one: http://www.steelsoldiers.com/showthread.php?t=3255&highlight=exhaust+brake

I limit the exhaust back pressure to about 35 lb since there are no real guide lines to go by. It gives me about 50 hp of braking power for high RPMs....

Looked in to it one time and don't think it would be as effective (limited by the max vacuum that could be had, one atmosphere? which would translate into 14 psi), but it would provide for a way to shut down a runaway engine. :-)

Okay, very simply, engine braking is a result of resistance to the piston movement. In a gasoline (ignition) type engine, the throttle resists the "sucktion" of air into the combustion chamber, thus creating an "engine brake" effect. The diesel is always wide open (=has no throttle) and there is...

There is always a small amount of engine braking power in the diesel, not much, but you have to keep the engine rpm as high as possible, since there is a multiplier effect. This is why you must keep the road speed low when going downhill. Some long hills have speed limits going down (for trucks)...