Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. spdracer22

    EGR Anti-lag?

    Thanks, JSteve. That makes perfect sense. That was the answer I was looking for.
  2. spdracer22

    EGR Anti-lag?

    Specifically this statement from the rallycars.com link: "Starting in 2002 new anti-lag techniques, such as Exhaust Gas Recirculation (EGR), are slowly overtaking the method described above as they are kinder on the engine's mechanical parts." I know how the more conventional/common forms of...
  3. spdracer22

    EGR Anti-lag?

    Exactly. And, that's where I am confused. I just don't see it working in the way I have seen it described. What I have seen - and it works very well - is connecting the charge pipe (post compressor) to the turbo manifold and controlling the flow with a valve of some sort (electronic, pneumatic...
  4. spdracer22

    EGR Anti-lag?

    I have heard mention of "EGR Anti-lag" systems being utilized on WRC rally cars, but I cannot find any details about how they work. The only thing I have read is that they recirculate exhaust gasses back to the turbo manifold through a 'cat-like' device to burn residual fuel and increase...
  5. spdracer22

    Water Density/Viscosity Table

    25362: Sweet, thanks. I really appreciate the help, guys.
  6. spdracer22

    Water Density/Viscosity Table

    Thanks pmover. I tried searching both google and eng-tips and didn't find anything. Maybe 'water', 'viscosity', 'density', 'chart', 'table', or any combination/synonyms of the above are not useful... Also, I figured I would ask here first before I went searching the library. So, I did know...
  7. spdracer22

    Water Density/Viscosity Table

    I'm looking for a table of known density and viscosity values for water at temperatures from 25 to 80C in 5C intervals. If anyone has a resource, whether online or in a book, please let me know.
  8. spdracer22

    Calculate sliding caliper like 2-pot?

    Figured it out...it's what I thought...
  9. spdracer22

    Calculate sliding caliper like 2-pot?

    This makes sense in my head, but I just wanted to bounce it off you guys to make sure it's correct. With a sliding caliper, the piston pushes the pad it is in direct contact with against the rotor. Then, once it's contacted, the caliper body slides until the other pad is in contact with the...
  10. spdracer22

    Idea for offsetting solar/wind with grid power...

    BJC- I've taken a few economics classes, as well as run my own business, just FYI. If you look at the discussion, the argument for this device is not to save money; it's to help save the environment (which, I will concede that, in practice, may have varying degrees of success, as with any...
  11. spdracer22

    Idea for offsetting solar/wind with grid power...

    Exactly. 1kWh/day will only save me a little more than $3.65/yr. (In cali, it'd be more like $10/yr) Economically, probably not the best thing. But, it keeps 365kWh worth of energy from needing to be produced at the power plant every year (3% of my annual usage), and I feel just a little bit...
  12. spdracer22

    Idea for offsetting solar/wind with grid power...

    Come on guys...listen to what I've said. This is NOT SUPPOSED TO BE A FULL HOUSE SOLUTION. It's supposed to offset a few SMALL loads. Think about things that NEED to run during the heat of the day when electricity costs are highest. Sure, you're going to have a lot less load during the middle of...
  13. spdracer22

    Idea for offsetting solar/wind with grid power...

    Not sure if this link will work... It's a patent for what seems to be a device similar to what we've been talking about...
  14. spdracer22

    Idea for offsetting solar/wind with grid power...

    So, something like (imagine the |'s are lined up): AC--->Rectifier--->| |--->Capacitor--->Inverter--->Load DC---------------->| Or: AC--->Rectifier--->| |--->Inverter--->Load DC--->Capacitor--->|
  15. spdracer22

    Idea for offsetting solar/wind with grid power...

    Kieth hits a very, very good point, and one that this proposed system circumvents. Since you're not feeding back to the grid, you don't have to worry about interconnection issues. The poco will only see a drop in consumption, much like they'd see if you simply turned off a few big devices, or...
  16. spdracer22

    Idea for offsetting solar/wind with grid power...

    2dye4 - An OS project would be ideal. My vision would be to have the plans available online, then work out a deal with a supplier to provide DIY packages of all the parts needed to build it yourself. This would allow people to just print the plans and source the parts themselves, or buy a...
  17. spdracer22

    Idea for offsetting solar/wind with grid power...

    I definitely think this is the way to go. The only thing is keeping the efficiency decent. I think the option to bypass the rectifier/inverter at low alt power levels (ie. night with solar), would be essential. You'd have to do some testing, measuring output vs. input with varying DC supply...
  18. spdracer22

    Idea for offsetting solar/wind with grid power...

    Yeah, Europe seems to be all over this kind of thing, and why shouldn't they? I keep finding links to inverters you plug directly into a standard (European) wall outlet, and the one I mentioned earlier, the 'OK4U', could either be wired to a plug, or directly into the main. Plus, it was cheap...
  19. spdracer22

    Idea for offsetting solar/wind with grid power...

    The grid-tie inverters are made to work without batteries; they tie into the house mains. I did a little more research this weekend and found that Tripplite (and probably others) makes a PDU/ATS with multiple AC inputs. In a sense, this is what I'm looking for. It has a primary and a secondary...
  20. spdracer22

    Highest Compression Ratio for E85

    As a reference... In an auto engineering trade mag I picked up a SAE World, there's an article about a prototype Lotus Elise running E85... If I remember correctly, it's 11-11.5:1 CR, supercharged, with 6 injectors (4 standard location, 2 pre-S/C). They were also running it with the knock...

Part and Inventory Search

Back
Top