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General Information => General => Topic started by: nkb on January 20, 2007, 02:41:08 am

Title: LITTLE plunger
Post by: nkb on January 20, 2007, 02:41:08 am

i wonder if this plunger is too big for our cars??? hahaha
(http://dode777.jeeran.com/Fuel%20pump%20plunger.%206%20cylinders%20are%20pumping%2030%20tons%20of%20fuel%20per%20day%20at%20111%20revolutions%20per%20minute..jpg)
this thing is huge, it pumps like 30 tons of fuel a day at 110 rpm!! :shock: talk about  fuel economy

Title: LITTLE plunger
Post by: AdAm84 on January 20, 2007, 09:58:59 am

hmmm..... I wonder if my n/a rabbit will smoke with that plunger set up :lol:

Title: LITTLE plunger
Post by: jtanguay on January 20, 2007, 12:53:33 pm

that thing is a monster... its quite easily 1/3 the size of our whole injection pump itself...  if you could do a side by side comparison that would make a great avatar lol

Title: LITTLE plunger
Post by: nkb on January 20, 2007, 11:44:12 pm

i would but it is just some pic i found while serching for diesel stuff, looked interesting enough

Title: LITTLE plunger
Post by: Ziptar on January 21, 2007, 08:28:47 am

Now imagine the plunger size of this baby (http://www.gizmag.com/go/3263/)

Title: LITTLE plunger
Post by: burn_your_money on January 21, 2007, 11:17:37 am

300 ton crank... ummm

Title: LITTLE plunger
Post by: jtanguay on January 21, 2007, 12:05:58 pm

Quote

Instead, in this engine the top of the connecting rod attaches to a "crosshead" and a long piston rod then connects the crosshead to the piston. This lowers the sideways forces produced by the connecting rod and is absorbed by the crosshead and not by the piston. Sideways forces are what makes the cylinders in an auto engine become oval-shaped over time.

very interesting... i wouldn't want to do an oil change on that thing...  :shock:

108,920 hp at 102 rpm ummm...  that is many many horses!

Title: LITTLE plunger
Post by: burn_your_money on January 21, 2007, 01:10:18 pm

(http://upload.wikimedia.org/wikipedia/en/9/91/Crosshead_bearing.png)

I guess you just need to replace the guides when you rebuild the engine?

Title: LITTLE plunger
Post by: jtanguay on January 21, 2007, 02:09:57 pm

thats a really interesting setup...in reality the crosshead guide wear limit could be virtually unlimited, and still provide excellent wear reduction in the cylinder walls...  i wonder which other companies are going to be streamlining this new technology...

Title: LITTLE plunger
Post by: QuickTD on January 21, 2007, 04:22:56 pm

Quote from: "jtanguay"

thats a really interesting setup...in reality the crosshead guide wear limit could be virtually unlimited, and still provide excellent wear reduction in the cylinder walls...  i wonder which other companies are going to be streamlining this new technology...

New technology? I don't think so. The very earliest steam engines used crossheads so that they could seal the piston rod and make the engine double acting. 2 stroke marine diesels have always used a crosshead design since inception (early 1900's?) so that the under-piston scavenge space can be sealed from the crankcase. Nothing new there.

 Crosshead designs would produce engines too tall for automotive use.

Title: LITTLE plunger
Post by: AdAm84 on January 22, 2007, 04:56:41 pm

couldn't a design like the chrysler slant six be used? they had long strokes so they were tilted to fit the engine under the hood. ........just an idea

Title: LITTLE plunger
Post by: burn_your_money on January 22, 2007, 08:45:50 pm

http://en.wikipedia.org/wiki/Crosshead_bearing

Title: LITTLE plunger
Post by: AdAm84 on January 23, 2007, 06:09:41 pm

thanks. i didn't fully unnderstand the concept. great idea though.

Title: LITTLE plunger
Post by: burn_your_money on January 23, 2007, 06:35:34 pm

yeah I had no idea what was going on either so I googled it and I figured I should share my results