Quote:
Originally Posted by George Tyler
It will work: it is similar to a variable displacement but with the cut off cylinders Clapping! they are causing loss, but I think the overall effect is still positive. the savings come from reduced manifold suction, less pumping loss.
Funny, I was working on something like this myself, then came across this article on autospeed web site..... I feel cheated! haha, well you snooze you loose. I tried this at idle on my previa with an openguage, I disconnected 2 injectors. idle speed dropped a bit, but litres/hour hardly changed. then I realised, the open guage still thinks all 4 injectors are working! so consumption is actually 1/2. some of that will come from the lower idle speed though. that is worth having, even if it was just at idle. I have other control scemes though, not the wideband sensor. will talk about that a bit later.
I have patented some things before but don't want to get into that again, as soon as there is potential money around you have to fight off the sharks. if I post it here at least I can use it without others sueing me!
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Glad to see your experiment. By disconnecting fuel injectors, you just made
traditional cylinder deactivation in a fixed mode. This is the skill having tried
by many others for decades. There might be dozens of similar patents in
the database around world. Please don't forget fuel is closed loop controlled
by ECU. So when you cut fuel from these 2 injectors, ECU will try to
compensat the loop by adding more fuel into other injectors. The result
may not save fuel, but the extra fuel injected into the active cylinders will
not be fully burned, it becomes un-burned HC and CO, becomes emissions.
As I have mentioned, 50% deactivation to a 4-cylinder engine of Previa is
over-deactivation that makes the vehicle not drivable, or largely reduced
driving ability. When you want to stop over-deactivation, you have to stop
the vehicle and plug into the injector connectors again.... Many issues and
troubles may make your invention non-operable.
DCD will definitely let your dream become true. It will bring all the benefit
you have dreamed, with less issues and troubles you would encounter. When
you need it, just click the button to turn it on; when you don't need it,
just trun it off. The percentage of deactivation can be adjusted in multiple
steps according to your driving needs, making your engine power best match
the real driving needs without wasting extra fuel. DCD IS HIGHLY
RECOMMENDED TO SMART ECOMODDERS LIKE YOU!
By the way, please show us your patents and inventions, I wonder.