Mitsubishi Mivec
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Joined: Jun 2003
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Originally posted by LS_ken-e
mivec is much like vtec. mivec was created before honda came out with VTEC, but honda used vtec much more widely then mitsu, and they did it in the states, while mitsu didn't feel we needed for some odd reason. most of today's mivec systems use direct fuel injection (which owns all other forms of fuel injection) and 3-staged cam lobs (compared to hondas two-stage set-up) that are used in three different rpm ranges (1: 0-3000rpm, 2: 3001-6000, 3: 6001- 9000, this is just an example). but the mivec itself is just the staged cam lob system, that's why you can use a vtec controller to manipulate your mivec engagment in the same exact manner.
this is my understanding.
Mitsubishi really made vast improvements on direct fuel injection technology for the industry, and their DI system runs on a sick-as-fuck 700 psi of fuel pressure that's produced by an engine-feed injection pump. coupled with mivec, you can extract massive amounts of HP and super-efficent gas milage with direct injection.
mivec is much like vtec. mivec was created before honda came out with VTEC, but honda used vtec much more widely then mitsu, and they did it in the states, while mitsu didn't feel we needed for some odd reason. most of today's mivec systems use direct fuel injection (which owns all other forms of fuel injection) and 3-staged cam lobs (compared to hondas two-stage set-up) that are used in three different rpm ranges (1: 0-3000rpm, 2: 3001-6000, 3: 6001- 9000, this is just an example). but the mivec itself is just the staged cam lob system, that's why you can use a vtec controller to manipulate your mivec engagment in the same exact manner.
this is my understanding.
Mitsubishi really made vast improvements on direct fuel injection technology for the industry, and their DI system runs on a sick-as-fuck 700 psi of fuel pressure that's produced by an engine-feed injection pump. coupled with mivec, you can extract massive amounts of HP and super-efficent gas milage with direct injection.
but, yea... the GDI system that the MIVEC uses is the exact same principle as a diesel engine. It injects the fuel directly into the combustion chamber... which means it can use less since the fuel doesnt ahve to pass thru intake ports, amnifolds, or valves. this means that the fuel will not recollect together and drop out of the air as well as stick to the walls that it touches. which means, more fuel can be used for energy. and yea, in order to inject fuel into a combustion chamber that already is at ~10x the atmospheric pressure AND to have it finely atomized (not misted) would require a TON of fuel pressure. its exactly what diesels do. they have mechanical belt-driven fuel pumps to acheive such high fuel pressures. the injectors in a diesel engine are not electrically controlled IIRC. they are pressure controlled. they have something of a check valve in them. when the fuel in the lines has built up enough pressure, the check valve in the injector releases, but ONLY when the pressure is high enough. then it sprays the diesel fuel into the combustino chamber... at this point, the air in the combustion chamber is anywhere from 16 to 25 times the atmospheric pressure... and the oxygen molecules are SOO close together that the heat they produce from friction and agitation is enough to ignite the diesel when its injected into the chamber... which is why diesels have no spark plugs
its a pretty violent explosion, thats why they make the sound they make while they are running. so, while i dont know much about MIVEC and the GDI, i know SOMETHING about Diesel injection... so hopefully you have some idear how it works... or could work... or might work... or should work... or, yeaa...
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just blaze...
Joined: Jan 2002
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Damn, thats a lot of info there...I learned a couple of things. Are there any Mivec's in Tampa?
Originally posted by flubyux2
Shut up... Honda BOy!!!!
but, yea... the GDI system that the MIVEC uses is the exact same principle as a diesel engine. It injects the fuel directly into the combustion chamber... which means it can use less since the fuel doesnt ahve to pass thru intake ports, amnifolds, or valves. this means that the fuel will not recollect together and drop out of the air as well as stick to the walls that it touches. which means, more fuel can be used for energy. and yea, in order to inject fuel into a combustion chamber that already is at ~10x the atmospheric pressure AND to have it finely atomized (not misted) would require a TON of fuel pressure. its exactly what diesels do. they have mechanical belt-driven fuel pumps to acheive such high fuel pressures. the injectors in a diesel engine are not electrically controlled IIRC. they are pressure controlled. they have something of a check valve in them. when the fuel in the lines has built up enough pressure, the check valve in the injector releases, but ONLY when the pressure is high enough. then it sprays the diesel fuel into the combustino chamber... at this point, the air in the combustion chamber is anywhere from 16 to 25 times the atmospheric pressure... and the oxygen molecules are SOO close together that the heat they produce from friction and agitation is enough to ignite the diesel when its injected into the chamber... which is why diesels have no spark plugs its a pretty violent explosion, thats why they make the sound they make while they are running. so, while i dont know much about MIVEC and the GDI, i know SOMETHING about Diesel injection... so hopefully you have some idear how it works... or could work... or might work... or should work... or, yeaa...
Shut up... Honda BOy!!!!
but, yea... the GDI system that the MIVEC uses is the exact same principle as a diesel engine. It injects the fuel directly into the combustion chamber... which means it can use less since the fuel doesnt ahve to pass thru intake ports, amnifolds, or valves. this means that the fuel will not recollect together and drop out of the air as well as stick to the walls that it touches. which means, more fuel can be used for energy. and yea, in order to inject fuel into a combustion chamber that already is at ~10x the atmospheric pressure AND to have it finely atomized (not misted) would require a TON of fuel pressure. its exactly what diesels do. they have mechanical belt-driven fuel pumps to acheive such high fuel pressures. the injectors in a diesel engine are not electrically controlled IIRC. they are pressure controlled. they have something of a check valve in them. when the fuel in the lines has built up enough pressure, the check valve in the injector releases, but ONLY when the pressure is high enough. then it sprays the diesel fuel into the combustino chamber... at this point, the air in the combustion chamber is anywhere from 16 to 25 times the atmospheric pressure... and the oxygen molecules are SOO close together that the heat they produce from friction and agitation is enough to ignite the diesel when its injected into the chamber... which is why diesels have no spark plugs
its a pretty violent explosion, thats why they make the sound they make while they are running. so, while i dont know much about MIVEC and the GDI, i know SOMETHING about Diesel injection... so hopefully you have some idear how it works... or could work... or might work... or should work... or, yeaa...
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Quote : I'm Slow:
Less hours = less $$. Less repetitive 'ish every day = PRICELESS!
Quote : I'm Slow:
Less hours = less $$. Less repetitive 'ish every day = PRICELESS!
A.D.D. for life
Joined: Mar 2003
Posts: 522
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Originally posted by flubyux2
Shut up... Honda BOy!!!!
Shut up... Honda BOy!!!!
ohhh-
MIVEC = Mitsubishi Innovative Valve timing Electronic Control system
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