the m9r is the curse of the devil and renault’s idea of a diesel engine is terrible, nissan made a bad choice putting it in the new xtrails. it takes approx 1 hour to change the oil and filter. 10mins to drain (
then once you got everything back together its a snail pace pour of 7.4L 20 min wait to let the oil settle before start and then another 15 to wait for the oil to settle before checking its level. and if its over it wont run properly. i cant imagine what a major service will be like
stable high pressure delivered equaly to all injectores wich provide a much more effective fuel jet/spray… which is more easyly burned and able to disctribut it self move evenly inside the combustion chamber
oh! yes indeed… also details to consider to those designs.
uhm …so… about the marine engines
they take lots of damage with the salt environment… i supose. So, the reliability is restored with a less agressive mechanical design.
Compression on 20’s for a turbocharged engine is still too much.
Note another relevant thing: the manufacturers refers to the geometrical compression ratio, but we must take in consideration the real compression ratio, which takes in consideration the delay on the closing of the intake valve(s).
Only a curiosity: the MTU marine engine 1163 series, turbocharged to 3.2 bar at maximum power, has a compression ratio around 9,5:1. Incredible, isn’t it?
ah!!… there is also a little spark that ingnites from the tip of the injector to the top of the piston, not seen in this vid… to replace the lack of that ultra high compression
&
example…
1.6 honda engine has 90 mm stroke… and 9.2 compression
older diesel engines (20 15 years ago) had arround 32:1 compression
then TDi came… drop compression to 20’s
presently with low anti-friction aditives oils API SM and “strict” emissions they are already 15, with tha added fact of the complicated injection systems
besides due to stroke, compression is due to piston and combustion chamber size as in gas engine .
the torque comes from the longer stroke necessary to make the high compression possible. The ultra high compression creates alot of heat that ignites the fuel.
on Mar 29th, 2009 at 7:14 pm
why is the injector spraying 4 times in the single stroke?
on Mar 31st, 2009 at 7:44 pm
the m9r is the curse of the devil and renault’s idea of a diesel engine is terrible, nissan made a bad choice putting it in the new xtrails. it takes approx 1 hour to change the oil and filter. 10mins to drain (
then once you got everything back together its a snail pace pour of 7.4L 20 min wait to let the oil settle before start and then another 15 to wait for the oil to settle before checking its level. and if its over it wont run properly. i cant imagine what a major service will be like
on Apr 3rd, 2009 at 2:04 pm
cummins is also gonna use high pressure rail
on Apr 6th, 2009 at 9:15 am
great
thank you
on Apr 8th, 2009 at 2:44 pm
direct injection using piezo injectors like mercedes used for awhil
on Apr 9th, 2009 at 12:25 am
Lol Cool Vid
on Apr 11th, 2009 at 7:12 pm
i’ve never seen such a video… great indeed
on Apr 13th, 2009 at 5:06 pm
high pressured fuel system - before the injectors
stable high pressure delivered equaly to all injectores wich provide a much more effective fuel jet/spray… which is more easyly burned and able to disctribut it self move evenly inside the combustion chamber
on Apr 15th, 2009 at 11:06 am
what is the common rail
on Apr 17th, 2009 at 4:17 am
Best all-rounder in class.
on Apr 17th, 2009 at 11:07 pm
it swirls the fuel for more efficient combustion
on Apr 18th, 2009 at 3:04 pm
eventually the built up particles get burned off from the high exhaust temps
on Apr 19th, 2009 at 2:41 pm
fucking EGR!!!
on Apr 20th, 2009 at 4:37 am
oh! yes indeed… also details to consider to those designs.
uhm …so… about the marine engines
they take lots of damage with the salt environment… i supose. So, the reliability is restored with a less agressive mechanical design.
on Apr 23rd, 2009 at 3:31 pm
Compression on 20’s for a turbocharged engine is still too much.
Note another relevant thing: the manufacturers refers to the geometrical compression ratio, but we must take in consideration the real compression ratio, which takes in consideration the delay on the closing of the intake valve(s).
Only a curiosity: the MTU marine engine 1163 series, turbocharged to 3.2 bar at maximum power, has a compression ratio around 9,5:1. Incredible, isn’t it?
on Apr 25th, 2009 at 3:17 am
grnjiant (1 hour ago)
ah!!… there is also a little spark that ingnites from the tip of the injector to the top of the piston, not seen in this vid… to replace the lack of that ultra high compression
see the “common rail” video
on Apr 28th, 2009 at 3:35 am
hi! update your-self “friend”!!
MR9 engine as 15.1 comp
&
example…
1.6 honda engine has 90 mm stroke… and 9.2 compression
older diesel engines (20 15 years ago) had arround 32:1 compression
then TDi came… drop compression to 20’s
presently with low anti-friction aditives oils API SM and “strict” emissions they are already 15, with tha added fact of the complicated injection systems
besides due to stroke, compression is due to piston and combustion chamber size as in gas engine .
on Apr 28th, 2009 at 7:08 pm
the torque comes from the longer stroke necessary to make the high compression possible. The ultra high compression creates alot of heat that ignites the fuel.
on Apr 29th, 2009 at 8:39 am
You are headache friendly when your fingers aren’t moving.
on Apr 30th, 2009 at 9:53 pm
this is a very nice illu
thanks dude
on May 1st, 2009 at 10:18 pm
incredible
nice vid.
on May 3rd, 2009 at 1:09 am
Kształt tłoka skopiowany z VW 1.9 TDI 1Z.
Piston shape is a copy of VW’s 1.9 TDI 1Z engine.
on May 3rd, 2009 at 11:21 pm
This is Brilliant,..ive been trying to explain to my son just how an engine works and with this vid its made easy,…thanks for a great vid.