โJul-18-2015 09:31 PM
โJul-21-2015 05:16 AM
Spizzer wrote:Ray,IN wrote:wolfe10 wrote:
I am not sure that use of the exhaust brake is hard on the exhaust manifold.
Remember, with the throttle closed, ZERO fuel is injected. Zero fuel means zero additional heat. So, if the manifold is hot from a long climb, once you crest the hill, I don't see a problem with the exhaust brake on-- that will slow the cooling rate, but certainly not add to the heating rate.
How does a diesel idle if ZERO fuel is injected? Isn't the throttle closed then?
Ray, I assume it is like most modern cars with fuel injection, when coasting and engine rpm is above the idle set, it shuts off the injectors electronically. When rpm drops, it turns them back on.
Jeff
โJul-20-2015 06:49 PM
Ray,IN wrote:wolfe10 wrote:
I am not sure that use of the exhaust brake is hard on the exhaust manifold.
Remember, with the throttle closed, ZERO fuel is injected. Zero fuel means zero additional heat. So, if the manifold is hot from a long climb, once you crest the hill, I don't see a problem with the exhaust brake on-- that will slow the cooling rate, but certainly not add to the heating rate.
How does a diesel idle if ZERO fuel is injected? Isn't the throttle closed then?
โJul-20-2015 06:34 PM
wolfe10 wrote:
I am not sure that use of the exhaust brake is hard on the exhaust manifold.
Remember, with the throttle closed, ZERO fuel is injected. Zero fuel means zero additional heat. So, if the manifold is hot from a long climb, once you crest the hill, I don't see a problem with the exhaust brake on-- that will slow the cooling rate, but certainly not add to the heating rate.
โJul-19-2015 05:00 PM
โJul-19-2015 04:48 PM
โJul-19-2015 04:30 PM
โJul-19-2015 08:47 AM
Ivylog wrote:
Brian, no it .....
Using "air brake" twice and "unless the brake is depressed", Jeff you really did mean the MH's air brakes.:S
โJul-19-2015 07:53 AM
โJul-19-2015 05:22 AM
โJul-19-2015 04:58 AM
โJul-19-2015 03:20 AM
โJul-18-2015 09:50 PM