MDE 10 hole injectors

[Mike]

whatever you say Mike! I don't need you.

PERIOD DONE!

I know, you only need people to get your information for you, teach you, then you try and come up with something.

" What do ya'll know about NOZZLES " :rofl:

Man o Man it's sad Volker but once I needed you. NOW I DON'T ( [insert] cheering smiley).

I'm not done. PERIOD.

Truth hurts but fact is, we deserve the information which could come from this thread. This did not start out as a bash, I got out of hand I apologize to all for that. I wont change a word however, every one meant.

My mistakes are ing but I'll sleep well.

Thanks again for not helping. Otherwise, we would not be in great hands.

Hats off to you.

 

[mde]

Lets take this to PM's guys this is going no were just turning into a pissing match .

You are right ... as I said on post 14 ... I'm done ... don't argue with him anymore ... 2 faces 2 stories ... do I care? ... maybe ... because of this hobby-tuner gives us a bad spot, as we worked hard over 14 years of Common Rail Fuel Injection Development and diesel engine calibration (not tuning, real calibration) ...

Anyhow ... anybody with popcorn and a drink ... good night!

 

[TrentNell]

next one to post trying to get the last word in gets a week vacation

 

[Mike]

Thanks. It was Curtis' little digital camera. It's so bright out there you can't see anything on a screen. Taking pictures is just point the camera and hope it's looking in the right direction.


To answer someone else's question on here about "how much torque." The small turbo was screwed up. On that 299 exit speed run, it was real late boosting the large turbo. When it finally did.....4600lb car, .875 rearend gear, accelerating from 100 to 299 in less than 2 miles. That's how much torque.

Guess we'll do the math. :hug:

 

[TheBac]

Less PWM gives you a higher cylinder pressure ... burns more fuel in shorter time ... cracked piston???

? Less pwm gives more cyl pressure? That seems bass-ackward to me. Theres less fuel to burn at less pwm, right so it seems cyl prssure would be less, too?

 

[mde]

next one to post trying to get the last word in gets a week vacation

Thats OK ... I'm next week on the Bonneville Salt Flats where we running the world fastest Duramax, and hope we make it as the world fastest diesel ... wish us luck that everybody comes home safe

 

[TrentNell]

? Less pwm gives more cyl pressure? That seems bass-ackward to me. Theres less fuel to burn at less pwm, right so it seems cyl prssure would be less, too?

If the injector nozzle is bigger the less pulse width would probably equal the same size shot of fuel or more , just takes less MS to injecte the same amount of fuel .

 

[mde]

If the injector nozzle is bigger the less pulse width would probably equal the same size shot of fuel or more , just takes less MS to injected the same amount of fuel .

That's right but lets Finger confirm us with that ...

 

[Mike]

? Less pwm gives more cyl pressure? That seems bass-ackward to me. Theres less fuel to burn at less pwm, right so it seems cyl prssure would be less, too?

Way too big an assumption " Less PWM give more cyl pressure" One of the biggest, did the fuel flash/burn at once or longer compared to the same quantity with the longer pw event.
For racing, 20mm3 vs 200mm3 is the question.

 

[mde]

As we tested the 129% three years ago in FL, we had a cylinder pressure sensor hooked up and did a before and after with same fuel (corrected injector map) and we got a higher cylinder pressure and lower EGT's

Vflow = constant
PWM = variable
Timing = constant
Pressure = constant

 

[TheBac]

Well, I dont know jackshit about injectors, so thats why I asked.

 

[Mike]

As we tested the 129% three years ago in FL, we had a cylinder pressure sensor hooked up and did a before and after with same fuel (corrected injector map) and we got a higher cylinder pressure and lower EGT's

Seems removing timing and rail pressure along with adding PW(M) would lower the cylinder pressure and keep the pistons from cracking. But did these same injectors require more than stock pressure to compare pw to pw particularly at stock idle pressures? What cylinder pressure does it take to help the injector fire a given pressure and quantity? Is this balanced from idle to ? max rpm?

 

[mde]

As we tested the 129% three years ago in FL, we had a cylinder pressure sensor hooked up and did a before and after with same fuel (corrected injector map) and we got a higher cylinder pressure and lower EGT's

Vflow = constant
PWM = variable
Timing = constant
Pressure = constant

Seems removing timing and rail pressure along with adding PW(M) would lower the cylinder pressure and keep the pistons from cracking. But did these same injectors require more than stock pressure to compare pw to pw?

read again

 

[TrentNell]

one thing to consider, at least what i found on my truck . I made more power on a shot of fuel that was less than the equivelent of what i reduced the MS to suit 45% bigger injectors so that could explain higher cylinder pressure . exapmle stock injector MS = 3180 trapped @ 114.1 , 1900 MS trapped at 115 mph with 45% overs .

 

[Mike]

read again

I did, what did I miss?

Oops, here is the rest you missed.

"But did these same injectors require more than stock pressure to compare pw to pw particularly at stock idle pressures? What cylinder pressure does it take to help the injector fire a given pressure and quantity? Is this balanced from idle to ? max rpm?"

 

[Mike]

Well, I dont know jackshit about injectors, so thats why I asked.

We all ask the experts. I know I do. I hope some more injector builders chime in.

 

[mde]

one thing to consider, at least what i found on my truck . I made more power on a shot of fuel that was less than the equivelent of what i reduced the MS to suit 45% bigger injectors so that could explain higher cylinder pressure . exapmle stock injector MS = 3180 trapped @ 114.1 , 1900 MS trapped at 115 mph with 45% overs .

higher peak cylinder pressure = more power ...

 

[WolfLMM]

No, not really.....



but, what do I know...

Elaborate, I want to hear both sides of this. I feel like I may learn something here.

 

[WolfLMM]

higher peak cylinder pressure = more power ...

Yeh thats what I have always thought. Doesnt matter what size your inj. are, if you increased tq output you you increased CP.

 

[mde]

We all ask the experts. I know I do. I hope some more injector builders chime in.

In the aftermarket are just two CR injector builder, I call me one and the other which are really good. I bet there is none out there who provides bigger injector, who has the knowledge of the inside of the injector how it works and how much precision is in this injector. I was lucky that I worked with the inventor of the common rail system which he developed in the 60's and 70's, brought the system to Bosch in the late 80's and then he made them himself, he was my teacher and guru in all of common rail and diesel.