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New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change #5210202 09/11/19 01:57 PM
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wemay Offline OP
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Screenshot_20190911-155536_Chrome.jpgScreenshot_20190911-155550_Chrome.jpgScreenshot_20190911-155612_Chrome.jpg

19 VW Passat Wolfsburg TSI (VW Genuine 0W-20+OEM)
13 Hyundai Santa Fe Sport 2.0T (Shell RGT 5W-30+OEM)
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210234 09/11/19 02:20 PM
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Imp4 Offline
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That's 7300 psi.
Don't let that fail on you catastrophically....


2001 Mitsubishi Galant 2.4 - 165k+
Grandma's creampuff...
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: Imp4] #5210322 09/11/19 04:12 PM
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JLTD Offline
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Originally Posted by Imp4
That's 7300 psi.
Don't let that fail on you catastrophically....


Beat me to it...at that pressure a pinhole leak will cut through ... a lot of things.


Lates.
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210343 09/11/19 04:58 PM
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A_Harman Offline
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Common rail diesel systems are running 2000+ bar (29,000 psi).


2008 Dodge Ram 3500 diesel/G56
1985 Z51 Corvette track car 355/6-speed
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel/NV4500+GV
1972 GMC 1500 shortbed project truck 307/SM465
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210387 09/11/19 05:52 PM
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benjy Offline
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they don't need another problem DI system but both port + DI some are already using!!

Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: benjy] #5210451 09/11/19 07:06 PM
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14Accent Offline
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Originally Posted by benjy
they don't need another problem DI system but both port + DI some are already using!!


As much as I agree, it will never happen. Port + DI is too complex, and costs too much money. I almost wonder why they don't go back to an enrichment-style system, like the early Toyota's and others. A single injector, mounted just behind the throttle body, that sprayed fuel when the engine was cold. In theory, couldn't this single injector be used to momentarily spray an evenly-distributed mist of fuel across the intake valves? That would coat the valves with fuel and break down any deposits that may build up. It wouldn't have to run constantly, just once every few hundred miles under high-load situations where intake velocity is high to aid in deposit removal.


2013 Chevrolet Volt - Saves enough in fuel to pay for itself!

2007 Chevrolet Impala LT
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210594 09/12/19 12:00 AM
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nthach Offline
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Toyota is all in on their D-4S system which uses MPI and DI. Ford has licensed the system from Toyota and Denso. Supposedly Mazda figured out how to keep valve deposits at bay.

I can see GM and VW adopting this new Delphi system - given GM's ties to Delphi when it was spun off in the 1990s and VW having to comply with Euro standards which will more than likely clamp down on PM emissions. China, which is one of VW's most important markets also follows Euro specs.

Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210677 09/12/19 05:33 AM
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BMWTurboDzl Offline
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Well that's cool. I wonder how many pulses per sec.


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210866 09/12/19 10:04 AM
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wemay Offline OP
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I've never had deposit issues with any of my GDI vehicles and some have approached 200K miles.


19 VW Passat Wolfsburg TSI (VW Genuine 0W-20+OEM)
13 Hyundai Santa Fe Sport 2.0T (Shell RGT 5W-30+OEM)
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: BMWTurboDzl] #5210867 09/12/19 10:05 AM
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wemay Offline OP
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Originally Posted by BMWTurboDzl
Well that's cool. I wonder how many pulses per sec.


I was wondering that too.


19 VW Passat Wolfsburg TSI (VW Genuine 0W-20+OEM)
13 Hyundai Santa Fe Sport 2.0T (Shell RGT 5W-30+OEM)
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5212436 09/14/19 11:15 AM
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nthach Offline
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Mercedes and BMW claim their GDI systems from Bosch or Conti can do up to 5 injection pulses per cycle.

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