can a standalone (like BS3) make an LSX engine multi-displacment
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From: boca Raton, Florida
can a standalone (like BS3) make an LSX engine multi-displacment because i standalone can control each injector seperatly, could u make it so half wont spray fuel at certain times, therefore making it like the new multidisplacement HEMIs etc? seems like it would work
Staging Lane
Joined: Apr 2006
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From: Chicago, IL
you'd still have the cylinders trying to compress the air which would be an insane amount of wasted power. The DOD motors also have things that change in the valvetrain to keep the valves open (i think, someone correct me if i'm wrong).
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From: San Diego
Originally Posted by njn63
you'd still have the cylinders trying to compress the air which would be an insane amount of wasted power. The DOD motors also have things that change in the valvetrain to keep the valves open (i think, someone correct me if i'm wrong).
Last edited by GOaT Cheese; Oct 29, 2006 at 09:49 PM.
Originally Posted by GOaT Cheese
They have hydraulically unlocking lifters that stay closed during DOD opperation. I just went through training on that sytem a couple months ago, very elloborate oiling and control system.
Ken
Staging Lane
Joined: Apr 2006
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From: Chicago, IL
Originally Posted by Kenova
This way, all of the effort the engine puts into compressing the air in the cylinder is returned on the down stroke. Think of it as having an air spring inside the cylinder.
Ken
Ken
Launching!
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From: Brandon, MS
The newer GM E40 computer runs DoD on a few vehicles. It is pretty much the same computer as in the GTOs, Trailblazer SS, C6 Vette... except it is disabled from the factory in those vehicles. They are going to start using it on more vehicles in the near future.
The mechanical system of DoD is fairly simple. Just ground 4 solenoids and kill 4 injectors and you are running on 4 cylinders. However the timing that goes into activating it is somewhat complex.
Scroll about a 1/3 of the way down this page.
The mechanical system of DoD is fairly simple. Just ground 4 solenoids and kill 4 injectors and you are running on 4 cylinders. However the timing that goes into activating it is somewhat complex.
Scroll about a 1/3 of the way down this page.
Wouldn't this technology cause decreased life of the springs and lifters by keeping constant pressure on them and holding them closed for extended periods of time? Or am I misunderstanding this?
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From: Dallas, North Mexico
Originally Posted by BigMikeGXP
The newer GM E40 computer runs DoD on a few vehicles. It is pretty much the same computer as in the GTOs, Trailblazer SS, C6 Vette... except it is disabled from the factory in those vehicles. They are going to start using it on more vehicles in the near future.
The mechanical system of DoD is fairly simple. Just ground 4 solenoids and kill 4 injectors and you are running on 4 cylinders. However the timing that goes into activating it is somewhat complex.
Scroll about a 1/3 of the way down this page.
The mechanical system of DoD is fairly simple. Just ground 4 solenoids and kill 4 injectors and you are running on 4 cylinders. However the timing that goes into activating it is somewhat complex.
Scroll about a 1/3 of the way down this page.
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Verdad Gallardo TECH Enthusiast
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From: San Diego
Originally Posted by BigMikeGXP
The newer GM E40 computer runs DoD on a few vehicles. It is pretty much the same computer as in the GTOs, Trailblazer SS, C6 Vette... except it is disabled from the factory in those vehicles. They are going to start using it on more vehicles in the near future.
The mechanical system of DoD is fairly simple. Just ground 4 solenoids and kill 4 injectors and you are running on 4 cylinders. However the timing that goes into activating it is somewhat complex.
Scroll about a 1/3 of the way down this page.
The mechanical system of DoD is fairly simple. Just ground 4 solenoids and kill 4 injectors and you are running on 4 cylinders. However the timing that goes into activating it is somewhat complex.
Scroll about a 1/3 of the way down this page.
Launching!
Joined: Dec 2005
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From: Brandon, MS
Originally Posted by GOaT Cheese
You don't have any idea how the system works do you? The lifters on four cylinders are hydraulically deactivated so the valves don't open at all during DoD opperation. And if you were to ground the injector drivers, the injectors would stay open and fill the runners with gasoline. The injectors on the deactivated cylinders simply aren't comanded to fire during DoD.
The page I linked to goes into great detail how the system works.
Originally Posted by ArcticZ28
Wouldn't this technology cause decreased life of the springs and lifters by keeping constant pressure on them and holding them closed for extended periods of time? Or am I misunderstanding this?
Originally Posted by treyZ28
you'll have to worry about your O2 sensors thinking you're ultra rich as well
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From: San Diego
Originally Posted by BigMikeGXP
Ummmm.... nobody said anything about grounding the 4 injectors. .
. Launching!
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From: Brandon, MS
Originally Posted by GOaT Cheese
You are right, I appologize, I completely misread your post. My bad, I'm always so ready to blast people here that I see what I want some times. Next time I will make sure I read more better.
