Fuel Vaporization
Fuel Vaporization
09-08-2012, 02:32 PM
#1
I wonder if the same could be done to diesel.
If you dont know what im talking about, theres tons of info if you google "fuel vaporization"
I think it would be awesome (if possible) to develop a system for our mercedes and possibly other diesel engines so we can get high mpg and more power.
Purplecomputer
09-08-2012, 02:32 PM #1So im not sure if y'all are familiar with this theory but apparently if gasoline is properly vaporized before it is used in the engine there are huge MPG gains.
I wonder if the same could be done to diesel.
If you dont know what im talking about, theres tons of info if you google "fuel vaporization"
I think it would be awesome (if possible) to develop a system for our mercedes and possibly other diesel engines so we can get high mpg and more power.
09-08-2012, 11:41 PM
#3
(09-08-2012, 06:23 PM)aaa It's called atomization on a diesel, and it's all about the injector design (and the prechamber design). So yeah, they already tried it.
but its still a liquid as it reaches the injectors, I was saying what if the fuel is a vapor as it reaches the injectors. Wouldnt that help at all?
also isnt the fuel is only a fine mist? Thats still a liquid.
This post was last modified: 09-08-2012, 11:44 PM by Purplecomputer.
Purplecomputer
09-08-2012, 11:41 PM #3(09-08-2012, 06:23 PM)aaa It's called atomization on a diesel, and it's all about the injector design (and the prechamber design). So yeah, they already tried it.
but its still a liquid as it reaches the injectors, I was saying what if the fuel is a vapor as it reaches the injectors. Wouldnt that help at all?
also isnt the fuel is only a fine mist? Thats still a liquid.
09-09-2012, 09:24 AM
#5
In our engines the prechambers and injectors are responsible for atomizing the fuel. You can't get the fuel to the injector as a vapor. It's just not possible.
1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
09-09-2012, 09:24 AM #5This is one of those things that doesn't carry over from gassers to diesels. Gassers require a fuel-air mixture in the cylinder, and then the spark creates the explosion. In a diesel, the air in the cylinder is compressed without fuel, once it reaches near TDC, the fuel is injected into the super hot air, which causes the explosion.
In our engines the prechambers and injectors are responsible for atomizing the fuel. You can't get the fuel to the injector as a vapor. It's just not possible.
1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
09-09-2012, 09:41 AM
#6
(09-08-2012, 06:23 PM)aaa It's called atomization on a diesel, and it's all about the injector design (and the prechamber design). So yeah, they already tried it.
So bored out '85 prechambers and new nozzles
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
09-09-2012, 09:41 AM #6(09-08-2012, 06:23 PM)aaa It's called atomization on a diesel, and it's all about the injector design (and the prechamber design). So yeah, they already tried it.
So bored out '85 prechambers and new nozzles
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
09-09-2012, 10:28 AM
#7
(09-09-2012, 09:24 AM)led-panzer This is one of those things that doesn't carry over from gassers to diesels. Gassers require a fuel-air mixture in the cylinder, and then the spark creates the explosion. In a diesel, the air in the cylinder is compressed without fuel, once it reaches near TDC, the fuel is injected into the super hot air, which causes the explosion.
In our engines the prechambers and injectors are responsible for atomizing the fuel. You can't get the fuel to the injector as a vapor. It's just not possible.
I see, what a shame we cant get more out of our fuel for these cars... or is there?
Purplecomputer
09-09-2012, 10:28 AM #7(09-09-2012, 09:24 AM)led-panzer This is one of those things that doesn't carry over from gassers to diesels. Gassers require a fuel-air mixture in the cylinder, and then the spark creates the explosion. In a diesel, the air in the cylinder is compressed without fuel, once it reaches near TDC, the fuel is injected into the super hot air, which causes the explosion.
In our engines the prechambers and injectors are responsible for atomizing the fuel. You can't get the fuel to the injector as a vapor. It's just not possible.
I see, what a shame we cant get more out of our fuel for these cars... or is there?
09-09-2012, 10:32 AM
#8
1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
09-09-2012, 10:32 AM #8Buy a tdi and get 50mpg. With a 27+ year old Mercedes diesel you're quite limited
1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
09-09-2012, 11:16 AM
#9
(09-09-2012, 10:32 AM)led-panzer Buy a tdi and get 50mpg. With a 27+ year old Mercedes diesel you're quite limited
I know, But dont you ever feel theres something we could do?
I guess i just like to dream
This post was last modified: 09-09-2012, 11:16 AM by Purplecomputer.
Purplecomputer
09-09-2012, 11:16 AM #9(09-09-2012, 10:32 AM)led-panzer Buy a tdi and get 50mpg. With a 27+ year old Mercedes diesel you're quite limited
I know, But dont you ever feel theres something we could do?
I guess i just like to dream
09-09-2012, 01:15 PM
#11
(09-09-2012, 01:12 PM)aaa You can gut your interior to save weight.
Guess I could, I could also take out the engine and replace it with some horses.
Purplecomputer
09-09-2012, 01:15 PM #11(09-09-2012, 01:12 PM)aaa You can gut your interior to save weight.
Guess I could, I could also take out the engine and replace it with some horses.
09-10-2012, 01:28 AM
#12
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
sassparilla_kid
09-10-2012, 01:28 AM #12Well, diesel is an oil, which is why it doesn't vaporize, and gasoline is a solvent, which is why it does, if that makes sense? Notice if you spill gasoline on something or get it on you, it evaporates super quick, and diesel just sort of stays there. Correct me if I am wrong, but I'm pretty sure that's about how it works
-1982 300D Turbo, 280k miles, ALDA apparently maxxed, fram 8038, 12 lbs boost, non-egr manifolds, W/M injection, 4 brake light mod, Gen II w126 front rotors/calipers, 4-speed swap
In the works: A/W IC, adjust pump, turbo rebuild (w/60 trim comp wheel)
-1980 300SD, 110k, project car. Goal is to get it lookin' like it did on the showroom floor (body and interior wise, not necessarily under the hood )
-1974 240D, FRESH PAINT!!!!!!
09-10-2012, 09:23 AM
#13
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
09-10-2012, 09:23 AM #13Going way off topic you can drop like 100lbs and keep it driveable just takes time. Fixed rear windows with plexiglass, gut the rear seats and replace them with foam pad from joann's, alloy wheels/trunk lid, smaller starter, swap in lighter front seats, lighter brakes....etc. etc.
Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
09-10-2012, 12:27 PM
#14
(09-10-2012, 01:28 AM)sassparilla_kid Well, diesel is an oil, which is why it doesn't vaporize, and gasoline is a solvent, which is why it does, if that makes sense? Notice if you spill gasoline on something or get it on you, it evaporates super quick, and diesel just sort of stays there. Correct me if I am wrong, but I'm pretty sure that's about how it works
oh right...duh
Purplecomputer
09-10-2012, 12:27 PM #14(09-10-2012, 01:28 AM)sassparilla_kid Well, diesel is an oil, which is why it doesn't vaporize, and gasoline is a solvent, which is why it does, if that makes sense? Notice if you spill gasoline on something or get it on you, it evaporates super quick, and diesel just sort of stays there. Correct me if I am wrong, but I'm pretty sure that's about how it works
oh right...duh
09-14-2012, 11:52 AM
#15
(09-10-2012, 12:27 PM)Purplecomputer(09-10-2012, 01:28 AM)sassparilla_kid Well, diesel is an oil, which is why it doesn't vaporize, and gasoline is a solvent, which is why it does, if that makes sense? Notice if you spill gasoline on something or get it on you, it evaporates super quick, and diesel just sort of stays there. Correct me if I am wrong, but I'm pretty sure that's about how it works
oh right...duh
Actually, everything has an evaporation temperature, it just depends on the temperature and pressure.
The compounds that make up gasoline evaporate at room temperatures and pressures. Diesel needs more heat to evaporate. In a diesel engine's combustion chamber, there is enough heat, but this heat is also above the ignition point of the fuel so it starts burning after the droplets are injected and have some time to evaporate and form a combustible mixture. If the droplet is too large, the middle never evaporates and forms a carbon blob (soot). The smaller the droplet, the less soot, and the more power per unit of fuel you can produce.
RustyLugNut
09-14-2012, 11:52 AM #15(09-10-2012, 12:27 PM)Purplecomputer(09-10-2012, 01:28 AM)sassparilla_kid Well, diesel is an oil, which is why it doesn't vaporize, and gasoline is a solvent, which is why it does, if that makes sense? Notice if you spill gasoline on something or get it on you, it evaporates super quick, and diesel just sort of stays there. Correct me if I am wrong, but I'm pretty sure that's about how it works
oh right...duh
Actually, everything has an evaporation temperature, it just depends on the temperature and pressure.
The compounds that make up gasoline evaporate at room temperatures and pressures. Diesel needs more heat to evaporate. In a diesel engine's combustion chamber, there is enough heat, but this heat is also above the ignition point of the fuel so it starts burning after the droplets are injected and have some time to evaporate and form a combustible mixture. If the droplet is too large, the middle never evaporates and forms a carbon blob (soot). The smaller the droplet, the less soot, and the more power per unit of fuel you can produce.
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