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Will Mazda HCCI tech be the end of car diesels? #4492254
08/18/17 06:42 PM
08/18/17 06:42 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline OP
OneEyeJack  Offline OP
Joined: Sep 2010
Posts: 7,485
S California

Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492267
08/18/17 07:12 PM
08/18/17 07:12 PM
Joined: Apr 2004
Posts: 7,819
New York
pbm Offline
pbm  Offline
Joined: Apr 2004
Posts: 7,819
New York
Mazda is an engineering giant, IMO....I was disappointed that Ford sold their share back to Mazda because I liked Ford having access to their engineering.


'Journalism is Dead'
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492268
08/18/17 07:13 PM
08/18/17 07:13 PM
Joined: Mar 2017
Posts: 6,482
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,482
...
Hard to say at this time. If the engine does get that extra fuel economy they predict plus being reliable, then chances are very good. A 30% gain in fuel economy is nothing to sneeze at.


Cannot see signatures any longer so it doesn’t matter.
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492309
08/18/17 08:10 PM
08/18/17 08:10 PM
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,231
Where the wind comes sweepin'
No. It has its place but a compromise is always a compromise...

Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492343
08/18/17 08:53 PM
08/18/17 08:53 PM
Joined: Dec 2011
Posts: 5,093
North Carolina
rooflessVW Offline
rooflessVW  Offline
Joined: Dec 2011
Posts: 5,093
North Carolina
Will it replace diesels in passenger cars? Probably. Diesel is dead in that regard.

In HD trucks? No way.


"Zed's dead baby, Zed's dead."
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492420
08/18/17 10:32 PM
08/18/17 10:32 PM
Joined: Jun 2017
Posts: 81
Honda land
HondaRULZ Offline
HondaRULZ  Offline
Joined: Jun 2017
Posts: 81
Honda land
I still do not hear anyone asking "What do you drive"..guess that's coming up?

Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492470
08/18/17 11:44 PM
08/18/17 11:44 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline OP
OneEyeJack  Offline OP
Joined: Sep 2010
Posts: 7,485
S California

Re: Will Mazda HCCI tech be the end of car diesels? [Re: HondaRULZ] #4492482
08/19/17 12:30 AM
08/19/17 12:30 AM
Joined: Mar 2017
Posts: 6,482
...
PimTac Offline
PimTac  Offline
Joined: Mar 2017
Posts: 6,482
...
Originally Posted By: HondaRULZ
I still do not hear anyone asking "What do you drive"..guess that's coming up?



Does it matter? The Mazda SkyActiv HCCI is a pretty good advance for the internal combustion engine. If they can take a 30mpg engine and get almost 40mpg with this technology, then why not? Mazda SkyActiv engines have very good reliability compared to some other manufacturers that have had issues. There is an active thread on BITOG on the Ford EcoBoost 2.7's that are having problems. The new Honda 1.5 TGDI engine has fuel dilution issues.

This new engine of Mazda will also be going into some Toyota cars in the upcoming future now that Mazda and Toyota are linked together.


Cannot see signatures any longer so it doesn’t matter.
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492490
08/19/17 01:08 AM
08/19/17 01:08 AM
Joined: Dec 2002
Posts: 41,520
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 41,520
'Stralia
https://bobistheoilguy.com/forums/ubbthreads.php/topics/4437582/Re:_42___efficient_IC_engine_o

Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492509
08/19/17 03:07 AM
08/19/17 03:07 AM
Joined: Mar 2013
Posts: 5,029
The Midwest
skyactiv Offline
skyactiv  Offline
Joined: Mar 2013
Posts: 5,029
The Midwest
I'm going to guess these engines will NOT have the lifespan of traditional spark ignited gas engines and wont tolerate
much leakdown loss before needing overhauled. This will truly be an engine will the oil used will matter for long term longevity.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual
Wanted: 2019 Ford Ranger
Re: Will Mazda HCCI tech be the end of car diesels? [Re: skyactiv] #4492523
08/19/17 05:17 AM
08/19/17 05:17 AM
Joined: Sep 2010
Posts: 7,481
Texas & Global
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 7,481
Texas & Global
Think mean time between rebuilds was a downside of some company's rotary engines ...


2018 Chevy 1500 Z71 4WD
2017 Chevy Tahoe LT 4WD
2014 Fusion Hybrid Titanium
2013 Cruze LTZ - RS Turbo
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492542
08/19/17 05:58 AM
08/19/17 05:58 AM
Joined: Dec 2003
Posts: 9,919
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,919
Florida, Cape Coral
I am a Mazda fan and presently drive a SkyActiv CX5, However; I remember the Mazda Diesel and the teething issues it has and, maybe till has had for years. I do hope Mazda doesn't push this HCCI out to the public too quick and loose their fan base. Ed


CX5 Touring 2.5L :-)
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492560
08/19/17 06:30 AM
08/19/17 06:30 AM
Joined: Jul 2007
Posts: 4,336
Midwest USA
LoneRanger Offline
LoneRanger  Offline
Joined: Jul 2007
Posts: 4,336
Midwest USA
HCCI/electric hybrids could attain some serious fuel economy while putting out decent power levels, not to mention ultra low emissions. 75 mpg?



'09 Subaru Forester ...................(QS HM 5W30)
'16 Moto Guzzi Stelvio 1200 .....(ENI i-Ride PG 10W60)
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492580
08/19/17 06:59 AM
08/19/17 06:59 AM
Joined: Sep 2009
Posts: 325
Rockies
Scdevon Offline
Scdevon  Offline
Joined: Sep 2009
Posts: 325
Rockies
I'd be surprised if it lives up to the hype. I can see even the loss of a few percentage points of compression being a real problem on this engine.
Wouldn't the pistons / ring lands have to be at least as tough as a true Diesel to survive in what is essentially a compression ignition gasoline engine? We're talking some heavy internal parts for a "gas" engine.

Mazda has gotten better since they've started to build "normal" piston engine cars in recent decades, but they've had some real engineering flops.
If you like rotary engines, then fine. Hardly anyone else does like them though and they were real POS's in the 70's.

Last edited by Scdevon; 08/19/17 07:02 AM.

2003 Mustang Mach 1. 32V 4.6 Liter. Motorcraft Syn Blend 5W30
1970 Mustang Convertible 302-2V Auto (Stock) M/C 10W30
1970 VW Beetle 1600 DP
Re: Will Mazda HCCI tech be the end of car diesels? [Re: OneEyeJack] #4492589
08/19/17 07:07 AM
08/19/17 07:07 AM
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Johnny2Bad Offline
Johnny2Bad  Offline
Joined: May 2013
Posts: 2,160
Saskatchewan, Canada
Switzerland just announced it will no longer register any more Porsche Cayennes with the diesel motor. This is a direct result of the diesel emissions scandal.

Germany has said that the diesel motor's days are numbered.

France and the UK have said that the internal combustion motor's days are numbered, and you can bet the first type to die will be diesel passenger car motors.

Diesel passenger cars have barely began to get traction in North America before being eyed suspiciously by regulators.

The Mazda motor won't help matters, but it's just another nail in the coffin.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
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