Joe Donnelly, re: your article in TDR....

[BushWakr - RIP]

Joe I wonder if you could clarify something for me please. .



In your article on injection pumps in the last TDR mag. there are some figures that relate to "bar" which have confused me. It may just be a misprint but thought I'd ask

> On page 21/left side middle paragraph... . " maximum design output fuel pressure is 700 bar (10,150 psi)



> On page 22/left side end of paragraph 1 ... . "produces fuel pressures up to 150 bar (16,675 psi)



> On page 24/left side midway of first paragraph... . "This pump delivers fuel at high pressure (1000 bar or 14,500 psi)



Is there a typo in here?

How many psi is 1 bar?



Thanks for any help



Regards, Bob

 

[4020Deere]

1 bar = 14. 50377 psi

 

[BushWakr - RIP]

Thanks 4020'

It occured to me that 1 bar would likely be 1 atmoshpere or about 14. 5 psi. I assume the one quote from Joe's article is just a typo.



Thanks again !



Regards, BushWakr

 

[Mark_Kendrick]

Does anybody know how many inches of water are in 1 bar?



sort of on the subject. . in. h2o is used in vacume measurement.

 

[Lynn_Schwartz]

Mark - When I was a kid it used to be about 33 feet of water was one atmosphere but the best vaccum the normal guy could pull was about 27 or so feet. One "bar" is approximately 0. 986923... Atmosphere. Also one bar is about 29. 539 inches of mercury. One atmosphere at sea level is about 14. 5-6 pounds per square inch. take 14. 5 pounds of water and pour it into a tube one inch square and however high it rises (about 33 feet) will be where "water abhores a vaccum". Anyway thats the way it used to be. Hope this helps. Regards, Lynn

 

[Joseph Donnelly]

p. 22 should be 1150 bar not 150 bar.

Thanks for catching the typo.

 

[BushWakr - RIP]

Thanks Joe, kinda figured thats what it was after looking and thinking a bit.



Regards, Bob

 

[ZEEEW]

And dont forget to correct for temperature, a "standard day" is at 59* farenhiet, 29. 92 inches of mercury, at zero feet mean sea level