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Working with lambda values. Have tested both standard 93 octane gasoline and 93 oct with 10% ethanol, non oxygenated. Similar results with both. I should also mention that another injector was tested that had an appropriate spray pattern for the application. It showed a higher flow rate on...

I'm having trouble pinpointing the cause of a puzzling situation. I'm working with a GDI engine and using an injector with a sub optimal spray pattern which I believe is causing excessive cylinder wall wetting. Cold start is very bad. At WOT the engine's wideband lambda sensor is outputting a...

Has anyone here successfully engraved glass with a VMC mill? If so can you tell me what type of end mill, speed and feed you used? I'd like to engrave a logo into 1/8" borosilicate.

How does the high temperature performance (above 1000 degrees) differ between these two grades? According to ASTM A193 the yield strength for B8 class 2 (strain hardened 304) is almost the same as B16 (cr-mo-va), 100 ksi vs. 105 ksi. My understanding is 304 shouldn't be used above 900 degrees...

Thanks for your reply. The data I looked at for B16 must have been in units of deg C not F.

What is the best way to quantify the effects of using an ASTM A193 B16 alloy stud with a threaded 1018 steel flange? The thermal expansion coefficient of the stud is about 14 F^-1 and 1018 is 6.7 F^-1. Is there a standard regarding this? Is this difference something I should be concerned...

Please bear with me, I have little experience with control systems but I have some basic understanding how they work. I want to create, what I think should be a basic system, that regulates a pressure drop between two fluids. The system will consist of an electro-proportional valve that...

Would a UV resistant Derlin work in a similar application? Dupont says it's used for interior car parts.

Kind of a strange question, does anyone know what type of material auto manufacturers typically use to make the heating/ac vent slats?

Hi, I've been reading this board for awile but this is my first post. I'm wondering if anyone here knows much about "dual stage" fuel injectors. I'm not talking about using two differnt sized injectors. I have been told that there are new large injectors that flow like a small injector...