05-06-2013, 02:27 PM
|
#21 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,747
Thanks: 7,791
Thanked 8,596 Times in 7,079 Posts
|
Quote:
|
No wonder Diesels are fitted with supplementary engine-braking devices.
|
Compression release engine brake - Wikipedia, the free encyclopedia
Quote:
|
The name [Jake Brake]is derived from the manufacturer, Jacobs (of drill chuck fame), and was patented 1962–1965 by Clessie Cummins.
|
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
05-06-2013, 02:40 PM
|
#22 (permalink)
|
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,187
Thanks: 270
Thanked 3,528 Times in 2,802 Posts
|
Smaller diesels do not have a jake brake.
Newer diesels with VGT will use the turbo charger to act as a exhaust restriction brake.
My HE351VE turbocharger has this ability but I locked it out because I have no intrest in exhaust braking.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
|
|
05-06-2013, 06:57 PM
|
#23 (permalink)
|
|
Master EcoModder
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,747
Thanks: 7,791
Thanked 8,596 Times in 7,079 Posts
|
I respect that.
That kid (not I), who'd just graduated high school and was driving truckloads of grain past it in the 60s, sure did.  |
|
|
|
|
05-07-2013, 12:12 AM
|
#24 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,571
Thanks: 0
Thanked 1,628 Times in 1,453 Posts
|
Quote:
Originally Posted by oil pan 4
Smaller diesels do not have a jake brake.
Newer diesels with VGT will use the turbo charger to act as a exhaust restriction brake.
|
Even without a VGT, it's not impossible to fit an exhaust-brake in a smaller Diesel engine, and since it's cheaper than a Jake-Brake it's also widely used in heavy truck engines in overseas markets. |
|
|
|
|
05-07-2013, 01:27 AM
|
#25 (permalink)
|
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,187
Thanks: 270
Thanked 3,528 Times in 2,802 Posts
|
Old school flapper valve exhaust brakes were responsible for lots of blown head gaskets in the 70s and 80s.
I am going to avoid anything like that.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
|
|
05-07-2013, 10:36 PM
|
#26 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,571
Thanks: 0
Thanked 1,628 Times in 1,453 Posts
|
Quote:
Originally Posted by oil pan 4
Old school flapper valve exhaust brakes were responsible for lots of blown head gaskets in the 70s and 80s.
I am going to avoid anything like that.
|
They're still widely used back here and no problem at all, altough nowadays transmission-mounted braking retarders are getting more popular in heavier vehicles.
|
|
|
|
|
