I was thinking about it the other day...

What happens if you close an exhaust brake while pressing the accelerator? It keeps a load on the engine, correct?

I've never used an exhaust brake, but to me is sounds like it would be a really good way to keep your boost up while going around a corner... Or would it cause your EGT to sky rocket too fast?

Just thinking about things here...

 

wow

 

"Too much time on my hands, it's ticking away with my sanity, I've got too much time on my hands, it's hard to believe there can be such a calamity, I've got too much time on my hands and it's ticking away, ticking away from me

Too much time on my hands, (it's tick tick tick tick tickin away)
too much time on my hands (Now I don't know what to do, I say)
Too much time on my hands"

Britt

 

I love Styx

Kilroy was here,
~Rob

 

Hijack alert!

Yeah me too. That is until Dennis DeYoung tried to turn Styx into "rock opera".

Now back to the original topic. Your exhaust brake theory sounds....... Oh who am I kidding. I have no idea.

Britt

 

 

To get back on topic...

This won't work because the turbo works on pressure difference between the manifold and the rest ofthe exhaust, so with the exhaust brake the pressure behind the turbine will rise, voila no more spool.
The EGT's would also get toasty rather quickly

 

yeah, what he said

 

Trail-braking would be preferred, I believe.

 

Thank you, that makes good sense... It would keep a load, but loose turbo boost, so you'd be shooting yourself in the foot...

Now for the corallary: what if you had an exhaust brake IN FRONT OF the turbocharger?

That would keep a load on the engine, and keep the turbo spooled, right? Still the EGT problem, though... But without the turbocharger, that would be less of an issue...



Just ya'll wait... Folks will be street-racing Diesel's within 20 years, and I want to get a head start.

 

As Markus explained, the turbo works on pressure drop. The pre-turbo brake would become the restriction instead of the turbo, and you would still lose boost and get toasty EGT.

 

do what this guy does...

https://www.dieseltruckresource.com/...ad.php?t=84238

as you have probably already seen.

 

It won't work.
As an example, I was hauling tail up a fairly long grade in the fast lane passing a bunch of traffic. On the highway, I travel with the brake on so if I do come up behind someone a little quicker than I want to, I just lift and slow her down.
In this case, I had a car pull out in front of me into the fast lane. I lifted, brake came on and stuck on!!!! Talk about a pain in the butt. Of course because of traffic in the slow lane, I couldn't just coast over to the shoulder, all I could do is slow down and wait for an opening. It took first gear and wound to redline to barely get to move enough to get it over to the shoulder.
Just like stuffing a cork in the pipe!

Jeff

 

http://www.thedieselpage.com/readers/grenwood.htm

 

Ahh well, there goes that idea for street racing Diesels...

No, wait, I have another idea- what if you put the exhaust brake on the intake side of the engine? Hmm??







Nah, nevermind...