View Single Post
Old 25-07-2011, 09:16 PM   #44
DJR-351
I am Groot
Donating Member3
 
DJR-351's Avatar
 
Join Date: Dec 2007
Location: Burnett Heads, Qld
Posts: 6,842
Default Re: Worlds largest diesel engine

Quote:
Originally Posted by Paull
These engines use an air start system whereby a distributor allows 30 Bar air into each cylinder, at the correct time, which then forces the piston down. The distributor then shuts the air off prior to BDC and then opens up the next cylinder in line. This process continues until the fuel pumps are stroked up and when the revs rise, the air start system shuts down.
They also use the air start to blow over the engine prior to ignition as a test by leaving the indicator cocks open and the fuel pumps jacked off...
One ship i was on had a V16 Stork Werkspoor (now Wartsila) that blew oil out of the #5 Indicator cocks when in pre-start on a regular basis, it wasn't until we put a boroscope down the injector port that we realised the piston crown (oil cooled) was cracked into three pieces. It still ran ok, it just made a hell of a mess on pre-start when it blew a 100 litre's or so of oil all over the engine room.....GREASER!! CLEAN THAT UP NOW!!
__________________
..
McLaren F1
Dick Johnson Racing

"Those were the days when the cars were cars, they weren't built out of an Ikea pack like they are now and clothed in plastic; they were real cars." John Bowe
DJR-351 is offline   Reply With Quote