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Old 05-06-2013, 02:27 PM   #21 (permalink)
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No wonder Diesels are fitted with supplementary engine-braking devices.
Compression release engine brake - Wikipedia, the free encyclopedia

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The name [Jake Brake]is derived from the manufacturer, Jacobs (of drill chuck fame), and was patented 19621965 by Clessie Cummins.

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Old 05-06-2013, 02:40 PM   #22 (permalink)
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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.
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Old 05-06-2013, 06:57 PM   #23 (permalink)
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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.
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Old 05-07-2013, 12:12 AM   #24 (permalink)
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Originally Posted by oil pan 4 View Post
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.
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Old 05-07-2013, 01:27 AM   #25 (permalink)
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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.
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Old 05-07-2013, 10:36 PM   #26 (permalink)
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Originally Posted by oil pan 4 View Post
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.

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