Direct Injection!

[tvfreakazoid]

I think it would of been nice if Nissan had direct injection or does it? If not, it should of. I would think that would of added more power to the car. Probably closer to 350hp.

[Mental Block]

I'm sure they will eventually... at least I hope they do.

[DIGItonium]

Look for engines ending with "DD" for direct injection and ignition.

Nissan VQ engine - Wikipedia, the free encyclopedia

[azn370z]

Car and driver reports that the g37 and m will get direct injection soon. So the z should get it my 10 or 11. They speculate 340-350hp.

[BrokenVow]

Originally Posted by azn370z

Car and driver reports that the g37 and m will get direct injection soon. So the z should get it my 10 or 11. They speculate 340-350hp.

saw the same thing reported on autoblog. another reason for me to wait. (as if money wasn't the main factor.)

[NorCalZman]

Originally Posted by BrokenVow

saw the same thing reported on autoblog. another reason for me to wait. (as if money wasn't the main factor.)

Yup! Makes me feel okay about having to wait longer to save up a nice big down payment

[355890]

Originally Posted by NorCalZman

Yup! Makes me feel okay about having to wait longer to save up a nice big down payment

2009 you get a $ 2,500 tax rebate for the purchase of a new car.

Why not ???? 3 years of ownership on this model .... will be just the right time to swap for another.

[klubbheads]

if that is the case then i will definitely wait till 2010 or even 2011 to get the 370.

[Brazilbro]

Doesnt adding D.I. make it harder to upgrade your fuel system? Isnt that the problem they are having with the BMW I-135 running out of fuel past 6k

[tvfreakazoid]

Who knows. Even though I asked the question I really don't know what it does. Or how it generates more power. I just read it in various magazines.

Originally Posted by Brazilbro

Doesnt adding D.I. make it harder to upgrade your fuel system? Isnt that the problem they are having with the BMW I-135 running out of fuel past 6k

[AndreZ Cadena]

Oh WTF! This car will get better in a year and It overheats at the track!? shouldve kept my friggin 350Z....

[TipsZ]

Originally Posted by AndreZ Cadena

Oh WTF! This car will get better in a year and It overheats at the track!? shouldve kept my friggin 350Z....

In Stock it overheats? Can you expound please?

[370Z Purist]

Originally Posted by tvfreakazoid

Who knows. Even though I asked the question I really don't know what it does. Or how it generates more power. I just read it in various magazines.

It keeps the fuel spread out nearly perfectly in the cylinder, encouraging more complete combustion, which increases efficiency in the sense of more power (since more fuel burns) and cleaner exhausts (since more fuel burns). This is versus mixing fuel into the air at the throttle body area (well, a bit more past it). Fuel can "clump" so there are concentrated pockets of air and fuel mixtures, making combustion uneven and inefficient.

In general, it is significantly easier (chemically / stoichiometrically) to burn perfectly vaporized fuel than if were in a liquid state. Gasoline aerosolizes in air though, so it's difficult to observe in real time.

Direct injection is damn near the best thing you can get in any engine. But as mentioned before, a bad fuel pump or atomizer / injector will ruin any possible horsepower gain.

A good DI system provides good gains across the band, but particularly in high RPM ranges, giving good top end power (obviously, fuel has less time to spread out, so a good injector can do this better than a premixed engine, like the sequential mixer we have in the VQ37VHR).

[drisko]

Originally Posted by 370Z Purist

It keeps the fuel spread out nearly perfectly in the cylinder, encouraging more complete combustion, which increases efficiency in the sense of more power (since more fuel burns) and cleaner exhausts (since more fuel burns). This is versus mixing fuel into the air at the throttle body area (well, a bit more past it). Fuel can "clump" so there are concentrated pockets of air and fuel mixtures, making combustion uneven and inefficient.

In general, it is significantly easier (chemically / stoichiometrically) to burn perfectly vaporized fuel than if were in a liquid state. Gasoline aerosolizes in air though, so it's difficult to observe in real time.

Direct injection is damn near the best thing you can get in any engine. But as mentioned before, a bad fuel pump or atomizer / injector will ruin any possible horsepower gain.

A good DI system provides good gains across the band, but particularly in high RPM ranges, giving good top end power (obviously, fuel has less time to spread out, so a good injector can do this better than a premixed engine, like the sequential mixer we have in the VQ37VHR).

I believe the DI systems also make more power because the car can run a slightly leaner A/F ratio (the fuel amount is more precisely controlled).

[Shane D]

Not sure if anybody here watches Autoline Detroit, but it is a quick daily dose of auto info. Todays story mentions that Nissan is developing a new fuel injection system, incorporating Dual Port Injection. Should debut in 2010.

Pretty cool system that give you six to seven minutes of auto news each day.

Check out:
Autoline Daily

Shane D