Jun-01-2018 03:12 AM
Jun-02-2018 11:01 AM
Jun-02-2018 10:29 AM
Jun-02-2018 09:38 AM
Turtle n Peeps wrote:
DI mitigates detonation but does not prevent it.
They can't have the injection event after TDC because there is not enough time the inject the amount of fuel that is needed. (Not at this time anyway)
This is the reason manufactures recommend premium fuel when towing ect…..
Jun-02-2018 09:15 AM
Jun-02-2018 09:15 AM
hone eagle wrote:ShinerBock wrote:FishOnOne wrote:ShinerBock wrote:FishOnOne wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
They will add port injectors like Ford did before particulates filters are added.
While that reduces them at idle and under low load(especially in emission testing scenarios) it doesn't eliminate them once the DI kicks in at mid/high load. If the EPA testing gets more strict(just like it always does) to include these mid/high load scenarios then a PM filter will be needed eventually.
And they'll increase fuel pressure to improve atomization. I doubt we'll see a exhaust filter anytime soon.
Easier said than done for gasoline without running into detonation issues. Although it is the better atomasition of gasoline than diesel that makes finer particulate matter. Not saying it will come in the next five years or so and it will mainly depend on the political climate. It may happen in Eurpoe or Claifornia first.
Isn't that what DI prevents -detonation- because they can have the injection event after top dead centre?
after all these compression ratios are in the 10/1 range,well into detonation territory?
Jun-02-2018 08:53 AM
ShinerBock wrote:FishOnOne wrote:ShinerBock wrote:FishOnOne wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
They will add port injectors like Ford did before particulates filters are added.
While that reduces them at idle and under low load(especially in emission testing scenarios) it doesn't eliminate them once the DI kicks in at mid/high load. If the EPA testing gets more strict(just like it always does) to include these mid/high load scenarios then a PM filter will be needed eventually.
And they'll increase fuel pressure to improve atomization. I doubt we'll see a exhaust filter anytime soon.
Easier said than done for gasoline without running into detonation issues. Although it is the better atomasition of gasoline than diesel that makes finer particulate matter. Not saying it will come in the next five years or so and it will mainly depend on the political climate. It may happen in Eurpoe or Claifornia first.
Jun-02-2018 08:24 AM
FishOnOne wrote:ShinerBock wrote:FishOnOne wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
They will add port injectors like Ford did before particulates filters are added.
While that reduces them at idle and under low load(especially in emission testing scenarios) it doesn't eliminate them once the DI kicks in at mid/high load. If the EPA testing gets more strict(just like it always does) to include these mid/high load scenarios then a PM filter will be needed eventually.
And they'll increase fuel pressure to improve atomization. I doubt we'll see a exhaust filter anytime soon.
Jun-01-2018 11:15 PM
Jun-01-2018 08:49 PM
ShinerBock wrote:FishOnOne wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
They will add port injectors like Ford did before particulates filters are added.
While that reduces them at idle and under low load(especially in emission testing scenarios) it doesn't eliminate them once the DI kicks in at mid/high load. If the EPA testing gets more strict(just like it always does) to include these mid/high load scenarios then a PM filter will be needed eventually.
Jun-01-2018 02:26 PM
FishOnOne wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
They will add port injectors like Ford did before particulates filters are added.
Jun-01-2018 02:16 PM
parker.rowe wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
Not really any soot or particulate from a gasser. If you have particulate coming out the tailpipe, you have bigger problems since its probably metal! 🙂
Jun-01-2018 02:08 PM
parker.rowe wrote:ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
Not really any soot or particulate from a gasser. If you have particulate coming out the tailpipe, you have bigger problems since its probably metal! 🙂
Jun-01-2018 02:07 PM
ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
Jun-01-2018 01:52 PM
ShinerBock wrote:
I wonder how long it will be before they put particulate filters on these engines due to how much PM they produce.
Jun-01-2018 01:49 PM
colliehauler wrote:
It's amazing the HP they can get out of these small engines. Not only do they make a lot of power they seem to hold up, hope that's the case with the new GM 4 cylinder. These engines are producing the power of a small V-8 from just a few decades ago.