Diesel dimple piston technology

[roKWiz]

This sounds interesting and will help change the modern diesel engine to comply with EPA without most of the emissions crap.

Worth watching the whole video.

https://www.speedofair.com/r-d

[Franco Cozzo]

Originally Posted by roKWiz

This sounds interesting and will help change the modern diesel engine to comply with EPA without most of the emissions crap.

Worth watching the whole video.

https://www.speedofair.com/r-d

That'll be a breath of fresh air, my question is how come it's taken this long to figure out this rather than inventing DPFs and all sorts of shite

[GASWAGON]

Very impressive.

No more expensive DPF's plus increases in economy and torque!

[simon varley]

umm, yeah nah. old low pressure diesel engines had bowls in the pistons to create the swirl required to correctly mix the fuel and get the right overall air/fuel ratio for a clean burn. with HPCR engines the pressure is so much higher, that detailed design of the injector nozzles has significantly more impact on the burn than the piston design.

I don't see any data in the video that substantiates his claim. just pseudo engineering that has no relevence.

[roKWiz]

Originally Posted by simon varley

umm, yeah nah. old low pressure diesel engines had bowls in the pistons to create the swirl required to correctly mix the fuel and get the right overall air/fuel ratio for a clean burn. with HPCR engines the pressure is so much higher, that detailed design of the injector nozzles has significantly more impact on the burn than the piston design.

I don't see any data in the video that substantiates his claim. just pseudo engineering that has no relevence.

and obviously didn't read any of the independent reports attached to their website either.

The idea was originally developed for petrol V twin Indian motorbikes but found to be significantly more beneficial for over the road diesels than little diesel cars.

[simon varley]

my point exactly. no data on passenger cars. do those big lumbering off road engines even have to meet emissions standards?

[Franco Cozzo]

Originally Posted by simon varley

my point exactly. no data on passenger cars. do those big lumbering off road engines even have to meet emissions standards?

'over the road' is referring to on-highway engines, if I'm interpreting that post correctly.

CAT pulled out of all on-highway stuff around 2010 or there about because of emissions regulations in heavy vehicles, they do generators and off road stuff now only.

[roKWiz]

Originally Posted by Franco Cozzo

'over the road' is referring to on-highway engines, if I'm interpreting that post correctly.

CAT pulled out of all on-highway stuff around 2010 or there about because of emissions regulations in heavy vehicles, they do generators and off road stuff now only.

Correct, current diesel engines used in linehaul. Also includes Detroit series 60, PACCAR and Cummins.

In the US the most popular OTR diesel still in use in the lower 48 states excluding Commie-fornia is the Cat 3406B using genuine Cat parts still manufactured.
This technology is trying to gain certification through SEMA and hopes to meet CARB "Clean Idle" regulations and that's a good thing, despite the negative nelly's.

[None-ya]

So time to get the drill and welder out aye lol

[roKWiz]

Originally Posted by None-ya

So time to get the drill and welder out aye lol

Now where's my ceramic coating machine ?

[None-ya]

Originally Posted by roKWiz

Now where's my ceramic coating machine ?

. . . I'll get the shovel ( ceramic is basically clay from what I figure) lol

[roKWiz]

Originally Posted by None-ya

. . . I'll get the shovel ( ceramic is basically clay from what I figure) lol

How hard can it be ?

[jpd80]

One question,
the presenter claims that the Exhaust Gas Temperature was lowered by about 200 degrees,
so how would that help with meeting emissions, would that prevent SCR converter light off?

I’m asking the question because I honestly don’t know…..

[roKWiz]

Originally Posted by jpd80

One question,
the presenter claims that the Exhaust Gas Temperature was lowered by about 200 degrees,
so how would that help with meeting emissions, would that prevent SCR converter light off?

I’m asking the question because I honestly don’t know…..

Doesn't he explain later there would be no need for that emission related system.
200deg F cooler would otherwise be good for a hill lugging diesel in a unmolested system.
The emissions are met completing a cleaner burn so no soot is produced to raise the ex gas in the first place. Unburnt diesel into a hot exhaust pipe creates high temp climbing hills.
Looks good rolling the coal but totally unnecessary.

[None-ya]

Originally Posted by roKWiz

How hard can it be ?

-childly says- is tempting lol

Seriously tho I think the whole video is just a add for the pistons. He mentions near the end that they will also re-flash the ecu and change the turbo and exhaust among other things or was I just hearing things ??

[roKWiz]

Originally Posted by None-ya

-childly says- is tempting lol

Seriously tho I think the whole video is just a add for the pistons. He mentions near the end that they will also re-flash the ecu and change the turbo and exhaust among other things or was I just hearing things ??

Yes maybe an ad, all those improvements are with no other engine modifications other than the pistons, he also says that possibly a re flash of the ecu and turbo modifications help it comply to CARB and EPA 2024 and on engine standards if they wanted to remove all other emissions crap.

As they state the pistons achieve such a clean burn that there is so little carbon or soot build up to capture in the DPF that it makes it pointless being there.

[None-ya]

Originally Posted by roKWiz

Yes maybe an ad, all those improvements are with no other engine modifications other than the pistons, he also says that possibly a re flash of the ecu and turbo modifications help it comply to CARB and EPA 2024 and on engine standards if they wanted to remove all other emissions crap.

As they state the pistons achieve such a clean burn that there is so little carbon or soot build up to capture in the DPF that it makes it pointless being there.

Idk really guess I'm just sceptical ( if the right word for it )