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New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change #5210202 09/11/19 02:57 PM
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wemay Online Happy OP
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Screenshot_20190911-155536_Chrome.jpgScreenshot_20190911-155550_Chrome.jpgScreenshot_20190911-155612_Chrome.jpg

2018 KIA Sportage LX 2.4 AWD:
PP 5w20, PH9688
Next: PEAK 5w30 Syn, L14459

2013 Hyundai Santa Fe Sport 2.0T:
M1HM 10w30, XG9688
Next: same
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210234 09/11/19 03:20 PM
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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 05:12 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.


I use the overseas manual to choose my oil viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 149k, SS5w30/Amsoil

His: 2015 4Runner 55k, SS 5w20/Amsoil

Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210343 09/11/19 05:58 PM
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Common rail diesel systems are running 2000+ bar (29,000 psi).


1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210387 09/11/19 06:52 PM
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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 08:06 PM
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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!

2003 Cadillac Seville STS - The winter "beater", it uses the Volt's fuel
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210594 09/12/19 01:00 AM
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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 06:33 AM
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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.”

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Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5210866 09/12/19 11:04 AM
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I've never had deposit issues with any of my GDI vehicles and some have approached 200K miles.


2018 KIA Sportage LX 2.4 AWD:
PP 5w20, PH9688
Next: PEAK 5w30 Syn, L14459

2013 Hyundai Santa Fe Sport 2.0T:
M1HM 10w30, XG9688
Next: same
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: BMWTurboDzl] #5210867 09/12/19 11:05 AM
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Originally Posted by BMWTurboDzl
Well that's cool. I wonder how many pulses per sec.


I was wondering that too.


2018 KIA Sportage LX 2.4 AWD:
PP 5w20, PH9688
Next: PEAK 5w30 Syn, L14459

2013 Hyundai Santa Fe Sport 2.0T:
M1HM 10w30, XG9688
Next: same
Re: New Delphi 500+ bar GDi system cuts particulates up to 50% without engine change [Re: wemay] #5212436 09/14/19 12:15 PM
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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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