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#4556808 - 10/28/17 12:40 AM Mazdas new compression gas engine
mcrn Offline


Registered: 11/30/05
Posts: 3200
Loc: FL


Edited by mcrn (10/28/17 12:40 AM)
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#4556813 - 10/28/17 12:49 AM Re: Mazdas new compression gas engine [Re: mcrn]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7475
Loc: S California
Is it still on for 2018? Kind of exciting. Leave it to Mazda once they got clear of Ford to come up with something new.

Something like this might make a good pickup truck engine.

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#4556816 - 10/28/17 01:06 AM Re: Mazdas new compression gas engine [Re: mcrn]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2734
Loc: Wet side WA
Well a Turbo that's going to leave it out for me. I was hoping for a 2.4 engine and in the CX-5.
Time now to wait and see if this four cylinder Turbo runs better than some of the others.

Is it going to have LSPI issues?


Edited by JohnnyJohnson (10/28/17 01:08 AM)
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#4556818 - 10/28/17 01:12 AM Re: Mazdas new compression gas engine [Re: mcrn]
Kuato Offline


Registered: 10/23/05
Posts: 7094
Loc: Colorado
Optimally, best of both worlds. I hope they can pull it off successfully!
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#4556872 - 10/28/17 06:58 AM Re: Mazdas new compression gas engine [Re: mcrn]
Cujet Offline


Registered: 02/15/03
Posts: 7146
Loc: Jupiter, Florida
I've read that the engine is 40% thermally efficient. That's very close to the 41% of the latest Toyota hybrid engines. Impressive considering the robust output.
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#4556889 - 10/28/17 07:37 AM Re: Mazdas new compression gas engine [Re: JohnnyJohnson]
skyactiv Offline


Registered: 03/02/13
Posts: 4394
Loc: The Midwest
Originally Posted By: JohnnyJohnson
Well a Turbo that's going to leave it out for me. I was hoping for a 2.4 engine and in the CX-5.
Time now to wait and see if this four cylinder Turbo runs better than some of the others.

Is it going to have LSPI issues?


The real question is, what will the octane requirement be? It could be rated something like 55 EPA highway in a Mazda 3, but if it required 91 octane gas, that would turn some away from buying it.
Most auto makers are working on things behind closed doors to meet the 2025 54.5 MPG EPA fuel economy requirement. GM wants a standard higher octane gasoline because they know gas engines will be
far different less than 10 years from now.


Edited by skyactiv (10/28/17 07:38 AM)
Edit Reason: MPG omitted
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#4556897 - 10/28/17 07:49 AM Re: Mazdas new compression gas engine [Re: mcrn]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
I can't read the article.... this signup page pops over it
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#4556900 - 10/28/17 07:53 AM Re: Mazdas new compression gas engine [Re: skyactiv]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2734
Loc: Wet side WA
Originally Posted By: skyactiv
Originally Posted By: JohnnyJohnson
Well a Turbo that's going to leave it out for me. I was hoping for a 2.4 engine and in the CX-5.
Time now to wait and see if this four cylinder Turbo runs better than some of the others.

Is it going to have LSPI issues?


The real question is, what will the octane requirement be? It could be rated something like 55 EPA highway in a Mazda 3, but if it required 91 octane gas, that would turn some away from buying it.
Most auto makers are working on things behind closed doors to meet the 2025 54.5 MPG EPA fuel economy requirement. GM wants a standard higher octane gasoline because they know gas engines will be
far different less than 10 years from now.


When I worked on the Pipeline years ago Premium had to be 95+ and 92 to 94 octane was regular anything 91 or lower was sub octane regular and sold at all the cut rate stations like Time and Gull. Now they are selling us sub octane regular for four to five times plus what it used to sell for as sub octane regular. Wish my wages had reflected that.

Its way past time the EPA was reeled in and these CAFE standards get reviewed and set back to something practical.


Edited by JohnnyJohnson (10/28/17 07:59 AM)
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#4557021 - 10/28/17 10:21 AM Re: Mazdas new compression gas engine [Re: JohnnyJohnson]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: JohnnyJohnson

Its way past time the EPA was reeled in and these CAFE standards get reviewed and set back to something practical.


Or lighten up on the emissions regulations..... engines are burning cleaner than ever by DESIGN and computer software.

Engines should be optimized - for ECONOMY.

Make the most fuel efficient engines possible, and don't worry about emissions.
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#4557258 - 10/28/17 01:20 PM Re: Mazdas new compression gas engine [Re: Linctex]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2734
Loc: Wet side WA
Originally Posted By: Linctex
Originally Posted By: JohnnyJohnson

Its way past time the EPA was reeled in and these CAFE standards get reviewed and set back to something practical.


Or lighten up on the emissions regulations..... engines are burning cleaner than ever by DESIGN and computer software.

Engines should be optimized - for ECONOMY.

Make the most fuel efficient engines possible, and don't worry about emissions.


thumbsup thumbsup thumbsup
_________________________
2004 Toyota Corolla 121598
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74016
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4561719 - 11/01/17 11:52 PM Re: Mazdas new compression gas engine [Re: JohnnyJohnson]
Bladecutter Offline


Registered: 02/21/11
Posts: 1452
Loc: Dacono, CO
Originally Posted By: JohnnyJohnson
Well a Turbo that's going to leave it out for me. I was hoping for a 2.4 engine and in the CX-5.
Time now to wait and see if this four cylinder Turbo runs better than some of the others.

Is it going to have LSPI issues?


Supercharged 2.0, not turbocharged.
Whole different set of dynamics for low engine speeds.

BC.
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2015 Porsche Cayman
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#4563114 - 11/03/17 03:45 PM Re: Mazdas new compression gas engine [Re: mcrn]
PimTac Online   content


Registered: 03/04/17
Posts: 4254
Loc: Soviet State of Washington
Yep. This engine will have a supercharger, not a turbocharger.

The Mazda engineers are top notch. I believe Toyota has a close eye on this engine as future plans are having Mazda engines in certain Toyota vehicles.


Edited by PimTac (11/03/17 03:47 PM)
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