The RX-7 confirmed to be in the pipeline for 2017---RX-Vision Unveil!!
09-30-15, 12:29 PM
#2628
Eats, Sleeps, Dreams Rotary
i guess the lame thing for me is that generally concepts are a much more extreme version of what will be released. In this pic it looks pretty conservative. although I am not sure i can really make that conclusion just yet.
Last edited by matty; 09-30-15 at 12:32 PM.
09-30-15, 08:28 PM
#2633
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I'm hoping so.. I mean that's where they pulled most of the FD from. Even if this isn't an "RX" but piston driven.. I'm buying it.
Also looking at that dealership artwork.. yes it's RE based.. but it's also all racing. Perhaps they are pushing heavily on the racing and not the rotary. We know they had the 16x in development. I can only guess they had a car in the works to go with it. Rather than ditch the RX successor with the death of the engine.. put something in it to at least keep 1/2 of the work?
IDK.. but really.. I've not been this excited about an upcoming Rx7 announcement ever. No really.. ever.
Also looking at that dealership artwork.. yes it's RE based.. but it's also all racing. Perhaps they are pushing heavily on the racing and not the rotary. We know they had the 16x in development. I can only guess they had a car in the works to go with it. Rather than ditch the RX successor with the death of the engine.. put something in it to at least keep 1/2 of the work?
IDK.. but really.. I've not been this excited about an upcoming Rx7 announcement ever. No really.. ever.
10-01-15, 11:36 AM
#2637
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I think everyone is focusing on the R part of RX and forgetting about the X. Would another car using a Wankel power source really be experimental after all these decades?
Hypercars are hybrids, F1 has electric assist turbos, even Infiniti has a car where hybrid is a performance upgrade, BMW's i8 relies on just a measly turbo 3cyl and the engine for their i3 is an optional convenience. I'm sure we've all heard the rumors about a wankel based range extender, is it so crazy to think a new RX might be an electric sports car with a rotary replacing most of the heavy batteries? I'm open to the idea.
Hypercars are hybrids, F1 has electric assist turbos, even Infiniti has a car where hybrid is a performance upgrade, BMW's i8 relies on just a measly turbo 3cyl and the engine for their i3 is an optional convenience. I'm sure we've all heard the rumors about a wankel based range extender, is it so crazy to think a new RX might be an electric sports car with a rotary replacing most of the heavy batteries? I'm open to the idea.
10-01-15, 12:24 PM
#2638
Regarding an electric sports car that uses a rotary range extender like the Mazda2 one.
Batteries = weight and cost.
Weight is antithetical to Mazda's performance ideal. The FD RX-7 was their sports car, not the 3 rotor JC cosmo.
---------
Mazda is working with technologies that can make the 16X rotary a much more efficient prime mover than the old 13B.
Direct injection as shown on the Mazda2 EV rotary generator allows for adding the overlap back into the engine for improved power potential while meeting more stringent emissions.
-----------
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
Batteries = weight and cost.
Weight is antithetical to Mazda's performance ideal. The FD RX-7 was their sports car, not the 3 rotor JC cosmo.
---------
Mazda is working with technologies that can make the 16X rotary a much more efficient prime mover than the old 13B.
Direct injection as shown on the Mazda2 EV rotary generator allows for adding the overlap back into the engine for improved power potential while meeting more stringent emissions.
-----------
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
10-01-15, 02:54 PM
#2639
Regarding an electric sports car that uses a rotary range extender like the Mazda2 one.
Batteries = weight and cost.
Weight is antithetical to Mazda's performance ideal. The FD RX-7 was their sports car, not the 3 rotor JC cosmo.
---------
Mazda is working with technologies that can make the 16X rotary a much more efficient prime mover than the old 13B.
Direct injection as shown on the Mazda2 EV rotary generator allows for adding the overlap back into the engine for improved power potential while meeting more stringent emissions.
-----------
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
Batteries = weight and cost.
Weight is antithetical to Mazda's performance ideal. The FD RX-7 was their sports car, not the 3 rotor JC cosmo.
---------
Mazda is working with technologies that can make the 16X rotary a much more efficient prime mover than the old 13B.
Direct injection as shown on the Mazda2 EV rotary generator allows for adding the overlap back into the engine for improved power potential while meeting more stringent emissions.
-----------
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
10-01-15, 04:20 PM
#2640
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So this article is interesting.
New Mazda RX-7 To Coincide With Cosmo?s 50th Anniversary: Report
We know the cosmo is going to be there.. so that coincides with the 50 year anniversary remark. AND the new MX5 is out which means if they are using a stretched version of that chassis.. everything is in place to make the car.
I think that article had the secret sauce.. all the way back form 2012..
Also the 2016 MX5 is 2,332 lbs.. under the 2800 mark referenced in the article.. and a roof and some other bits.. I gather it'll be in the 2700 - 2800 lbs range as well.
New Mazda RX-7 To Coincide With Cosmo?s 50th Anniversary: Report
We know the cosmo is going to be there.. so that coincides with the 50 year anniversary remark. AND the new MX5 is out which means if they are using a stretched version of that chassis.. everything is in place to make the car.
I think that article had the secret sauce.. all the way back form 2012..
Also the 2016 MX5 is 2,332 lbs.. under the 2800 mark referenced in the article.. and a roof and some other bits.. I gather it'll be in the 2700 - 2800 lbs range as well.
10-01-15, 09:51 PM
#2642
Where did you find that info on Supercritical DI? Just Curious..
Several months ago there was an interesting Ecoboost motor on a test rig for sale for a couple thousand on Ebay. I looked at it and noticed it had huge injectors like a diesel and an incredible array of sensors on it.
Did some research and it was from an auction from Transonic- it was one of their supercritical gasoline injection motors/test rig.
Did more digging and the company got HUGE funding and the research looked really interesting.
Several months ago there was an interesting Ecoboost motor on a test rig for sale for a couple thousand on Ebay. I looked at it and noticed it had huge injectors like a diesel and an incredible array of sensors on it.
Did some research and it was from an auction from Transonic- it was one of their supercritical gasoline injection motors/test rig.
Did more digging and the company got HUGE funding and the research looked really interesting.
10-01-15, 10:42 PM
#2643
Here is an interesting write up-
http://www.slideshare.net/chhabile/transonic-report-3
Some highlights-
AFRs
150 AFR idle (Yes, 150 parts air to 1 part fuel)
80 AFR partial load
14.7 AFR full load
All fuel injection/combustion timed to begin 20-30 degrees AFTER TOP DEAD CENTER.
This is huge on a rotary. No longer do you have wasted work of the combustion starting above the minor axis of the rotor housing and having to travel through the slot of the rotor past the minor axis pinch point while expanding. Rotary compression ratio can increase without the huge pumping losses.
Knock is ELIMINATED. Another big one and perhaps why rumors are the 2017 rotary will be NA and the 2020 rotary will be turbo again.
Mazda has already announced that their next generation of Skyativ gasoline engines will be compression ignition engines.
Claimed compression ratio working with compression ignition as low as 13:1 CR. This can work with 16X.
Fuel/combustion no longer in contact with the engine interior. Again, huge for the rotary which has suffered from high internal surface area. Should see more than the 100% improvement in fuel economy the piston engines saw (100mpg in 3,200lb car).
It is almost "drop in" technology for already direct injection engines. Special heated pintle injectors, fuel rail, ECU and software. It is a near term solution on internal combustion engines.
Supercritical injection is another application of existing technology. This is a current process for caffeine extraction for de-caffeinated coffee and tea as well as supercritical water injection in waste combustion for low emissions.
That is another interesting area. You can burn a supercritical mixture of 40% water and 60% fuel.
Applications-
Transonic is working with 5 OEM companies.
http://www.slideshare.net/chhabile/transonic-report-3
Some highlights-
AFRs
150 AFR idle (Yes, 150 parts air to 1 part fuel)
80 AFR partial load
14.7 AFR full load
All fuel injection/combustion timed to begin 20-30 degrees AFTER TOP DEAD CENTER.
This is huge on a rotary. No longer do you have wasted work of the combustion starting above the minor axis of the rotor housing and having to travel through the slot of the rotor past the minor axis pinch point while expanding. Rotary compression ratio can increase without the huge pumping losses.
Knock is ELIMINATED. Another big one and perhaps why rumors are the 2017 rotary will be NA and the 2020 rotary will be turbo again.
Mazda has already announced that their next generation of Skyativ gasoline engines will be compression ignition engines.
Claimed compression ratio working with compression ignition as low as 13:1 CR. This can work with 16X.
Fuel/combustion no longer in contact with the engine interior. Again, huge for the rotary which has suffered from high internal surface area. Should see more than the 100% improvement in fuel economy the piston engines saw (100mpg in 3,200lb car).
It is almost "drop in" technology for already direct injection engines. Special heated pintle injectors, fuel rail, ECU and software. It is a near term solution on internal combustion engines.
Supercritical injection is another application of existing technology. This is a current process for caffeine extraction for de-caffeinated coffee and tea as well as supercritical water injection in waste combustion for low emissions.
That is another interesting area. You can burn a supercritical mixture of 40% water and 60% fuel.
Applications-
Transonic is working with 5 OEM companies.
10-02-15, 12:03 AM
#2644
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
Also, think of the "throttle" response!
Here is an interesting write up-
http://www.slideshare.net/chhabile/transonic-report-3
Some highlights-
AFRs
150 AFR idle (Yes, 150 parts air to 1 part fuel)
80 AFR partial load
14.7 AFR full load
All fuel injection/combustion timed to begin 20-30 degrees AFTER TOP DEAD CENTER.
This is huge on a rotary. No longer do you have wasted work of the combustion starting above the minor axis of the rotor housing and having to travel through the slot of the rotor past the minor axis pinch point while expanding. Rotary compression ratio can increase without the huge pumping losses.
Knock is ELIMINATED. Another big one and perhaps why rumors are the 2017 rotary will be NA and the 2020 rotary will be turbo again.
Mazda has already announced that their next generation of Skyativ gasoline engines will be compression ignition engines.
Claimed compression ratio working with compression ignition as low as 13:1 CR. This can work with 16X.
Fuel/combustion no longer in contact with the engine interior. Again, huge for the rotary which has suffered from high internal surface area. Should see more than the 100% improvement in fuel economy the piston engines saw (100mpg in 3,200lb car).
It is almost "drop in" technology for already direct injection engines. Special heated pintle injectors, fuel rail, ECU and software. It is a near term solution on internal combustion engines.
Supercritical injection is another application of existing technology. This is a current process for caffeine extraction for de-caffeinated coffee and tea as well as supercritical water injection in waste combustion for low emissions.
That is another interesting area. You can burn a supercritical mixture of 40% water and 60% fuel.
Applications-
Transonic is working with 5 OEM companies.
http://www.slideshare.net/chhabile/transonic-report-3
Some highlights-
AFRs
150 AFR idle (Yes, 150 parts air to 1 part fuel)
80 AFR partial load
14.7 AFR full load
All fuel injection/combustion timed to begin 20-30 degrees AFTER TOP DEAD CENTER.
This is huge on a rotary. No longer do you have wasted work of the combustion starting above the minor axis of the rotor housing and having to travel through the slot of the rotor past the minor axis pinch point while expanding. Rotary compression ratio can increase without the huge pumping losses.
Knock is ELIMINATED. Another big one and perhaps why rumors are the 2017 rotary will be NA and the 2020 rotary will be turbo again.
Mazda has already announced that their next generation of Skyativ gasoline engines will be compression ignition engines.
Claimed compression ratio working with compression ignition as low as 13:1 CR. This can work with 16X.
Fuel/combustion no longer in contact with the engine interior. Again, huge for the rotary which has suffered from high internal surface area. Should see more than the 100% improvement in fuel economy the piston engines saw (100mpg in 3,200lb car).
It is almost "drop in" technology for already direct injection engines. Special heated pintle injectors, fuel rail, ECU and software. It is a near term solution on internal combustion engines.
Supercritical injection is another application of existing technology. This is a current process for caffeine extraction for de-caffeinated coffee and tea as well as supercritical water injection in waste combustion for low emissions.
That is another interesting area. You can burn a supercritical mixture of 40% water and 60% fuel.
Applications-
Transonic is working with 5 OEM companies.
Link isn't working.
I had no idea Mazda announced the next gen engines are going to be compression ignition, I knew they've been playing with it for some time now(iirc part of the reason the Mazdaspeed 2.3 back in 2006 was named DISI(direct injection, spark ignition) was to differentiate it from the future compression ign engines. Pair these new engines with the deal Mazda entered with Toyota for their hybrid tech(among other things), and I think its safe to assume the future is all around looking very bright for Mazda.
This could be incredibly ground breaking for both Mazda and the rotary if they pull this off, and we all know they need an ace up their sleeve if the rotary ever stands a chance in a production car again.
Some (pehaps rhetorical) questions... How severe would the potential carboning issues be with this in the rotary? And, how well will this work in the real world, how quickly could it react to a bad tank of fuel, and how many bugs will there be in the first iteration of quite a ground breaking step in gasoline production cars? Certainly people infinitely smarter than me at Mazda have worked out the answers to all this.
Last edited by Spirit-RE; 10-02-15 at 12:09 AM.
10-02-15, 10:08 AM
#2645
Here is an interesting write up-
http://www.slideshare.net/chhabile/transonic-report-3
Some highlights-
AFRs
150 AFR idle (Yes, 150 parts air to 1 part fuel)
80 AFR partial load
14.7 AFR full load
All fuel injection/combustion timed to begin 20-30 degrees AFTER TOP DEAD CENTER.
This is huge on a rotary. No longer do you have wasted work of the combustion starting above the minor axis of the rotor housing and having to travel through the slot of the rotor past the minor axis pinch point while expanding. Rotary compression ratio can increase without the huge pumping losses.
Knock is ELIMINATED. Another big one and perhaps why rumors are the 2017 rotary will be NA and the 2020 rotary will be turbo again.
Mazda has already announced that their next generation of Skyativ gasoline engines will be compression ignition engines.
Claimed compression ratio working with compression ignition as low as 13:1 CR. This can work with 16X.
Fuel/combustion no longer in contact with the engine interior. Again, huge for the rotary which has suffered from high internal surface area. Should see more than the 100% improvement in fuel economy the piston engines saw (100mpg in 3,200lb car).
It is almost "drop in" technology for already direct injection engines. Special heated pintle injectors, fuel rail, ECU and software. It is a near term solution on internal combustion engines.
Supercritical injection is another application of existing technology. This is a current process for caffeine extraction for de-caffeinated coffee and tea as well as supercritical water injection in waste combustion for low emissions.
That is another interesting area. You can burn a supercritical mixture of 40% water and 60% fuel.
Applications-
Transonic is working with 5 OEM companies.
http://www.slideshare.net/chhabile/transonic-report-3
Some highlights-
AFRs
150 AFR idle (Yes, 150 parts air to 1 part fuel)
80 AFR partial load
14.7 AFR full load
All fuel injection/combustion timed to begin 20-30 degrees AFTER TOP DEAD CENTER.
This is huge on a rotary. No longer do you have wasted work of the combustion starting above the minor axis of the rotor housing and having to travel through the slot of the rotor past the minor axis pinch point while expanding. Rotary compression ratio can increase without the huge pumping losses.
Knock is ELIMINATED. Another big one and perhaps why rumors are the 2017 rotary will be NA and the 2020 rotary will be turbo again.
Mazda has already announced that their next generation of Skyativ gasoline engines will be compression ignition engines.
Claimed compression ratio working with compression ignition as low as 13:1 CR. This can work with 16X.
Fuel/combustion no longer in contact with the engine interior. Again, huge for the rotary which has suffered from high internal surface area. Should see more than the 100% improvement in fuel economy the piston engines saw (100mpg in 3,200lb car).
It is almost "drop in" technology for already direct injection engines. Special heated pintle injectors, fuel rail, ECU and software. It is a near term solution on internal combustion engines.
Supercritical injection is another application of existing technology. This is a current process for caffeine extraction for de-caffeinated coffee and tea as well as supercritical water injection in waste combustion for low emissions.
That is another interesting area. You can burn a supercritical mixture of 40% water and 60% fuel.
Applications-
Transonic is working with 5 OEM companies.
Can't wait for another 7 though! Teaser pic looks kicka$$!
10-02-15, 10:11 AM
#2646
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Join Date: Mar 2012
Location: Huntsville, al
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Regarding an electric sports car that uses a rotary range extender like the Mazda2 one.
Batteries = weight and cost.
Weight is antithetical to Mazda's performance ideal. The FD RX-7 was their sports car, not the 3 rotor JC cosmo.
---------
Mazda is working with technologies that can make the 16X rotary a much more efficient prime mover than the old 13B.
Direct injection as shown on the Mazda2 EV rotary generator allows for adding the overlap back into the engine for improved power potential while meeting more stringent emissions.
-----------
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
Batteries = weight and cost.
Weight is antithetical to Mazda's performance ideal. The FD RX-7 was their sports car, not the 3 rotor JC cosmo.
---------
Mazda is working with technologies that can make the 16X rotary a much more efficient prime mover than the old 13B.
Direct injection as shown on the Mazda2 EV rotary generator allows for adding the overlap back into the engine for improved power potential while meeting more stringent emissions.
-----------
The next step of Supercritical direct injection which Mazda has hinted they will have in 2017 allows for-
Deleting the throttle plate, so now previous race car only "extreme" overlap for improved power potential is available without drive-ability issues of very high overlap.
Deleting spark plugs, so now there is a more even rotor housing surface under load, no "hot spot", no trailing plug chamber blow back into compression stroke and one less maintenance item on the engine.
Fuel throttled super lean burn without high NOx emissions as the supercritical injected fuel has almost instantaneous and completely homogeneous mixture throughout the combustion chamber that will experience very near 100% combustion.
Additionally, with very near 100% combustion there won't be a pocket of rich un-burnt gas trapped in the rotor pocket to be blown out the exhaust port by the intake charge on overlap with peripheral exhaust (what the Renesis side exhaust & zero overlap addressed) so they could go back to peripheral exhaust as well as intake.
With supercritical direct injection we are looking at nearly the Volumetric Efficiency (must have quiet exhaust and intake) of a full race 13B in a larger 16X package with a huge increase in gas mileage and lowering of emissions.
It sounds like you're describing a diesel wankel running gasoline, I'm certainly open to that interesting concept as well. It certainly qualifies as experimental too.
10-02-15, 10:13 AM
#2647
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Join Date: Mar 2012
Location: Huntsville, al
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Oh, I see.. I hate to burst the bubble but I used to work at Transonic and they are done. That engine was part of the close the doors auction.. The injectors we were testing on that engine were BMW Piezo injectors when it was sold, not Transonic injectors. That technology is dead for now. I could get into way more detail, but this thread is not for that.. Thanks!
Can't wait for another 7 though! Teaser pic looks kicka$$!
Can't wait for another 7 though! Teaser pic looks kicka$$!
10-02-15, 10:38 AM
#2648
Oh, I see.. I hate to burst the bubble but I used to work at Transonic and they are done. That engine was part of the close the doors auction..
Pop! I was under the impression it was a start-up that completed its cycle.
Other manufacturer's are working on Homogeneous Charge Compression Ignition strategies, but nothing looked as promising/simple as supercritical injection.
Pop! I was under the impression it was a start-up that completed its cycle.
Other manufacturer's are working on Homogeneous Charge Compression Ignition strategies, but nothing looked as promising/simple as supercritical injection.
10-02-15, 10:55 AM
#2649
Question, with the hypothetical P port intake and exhaust with supercritical injection, could it maintain a civilized idle, being as fuel is now the control instead of throttle blades?
Also, think of the "throttle" response!
Any fuel throttled direct injection engine doesn't need a throttle body.
A high overlap rotary only has the poor idle and low load misfires because of the closed throttle plate. Give them some throttle and they run smoothly.
Example on OEMs- Norton used a technique on their production p-port 2 rotor motorcycle where one rotor went dead at idle to increase load (and thus required throttle opening) on the other rotor so it would idle smoothly.
Link isn't working.
Works for me. Click the "SlideShare" words at the top or the link in your quote.
Also, think of the "throttle" response!
Any fuel throttled direct injection engine doesn't need a throttle body.
A high overlap rotary only has the poor idle and low load misfires because of the closed throttle plate. Give them some throttle and they run smoothly.
Example on OEMs- Norton used a technique on their production p-port 2 rotor motorcycle where one rotor went dead at idle to increase load (and thus required throttle opening) on the other rotor so it would idle smoothly.
Link isn't working.
Works for me. Click the "SlideShare" words at the top or the link in your quote.
10-02-15, 11:09 AM
#2650
Oh, I see.. I hate to burst the bubble but I used to work at Transonic and they are done.
When I first found the auction I searched to find anything about Transonic failing and didn't find anything. I now see some links that have been taken down- lawyers in effect.
If anyone else want more information/speculation just Google "Mike Cheiky".
When I first found the auction I searched to find anything about Transonic failing and didn't find anything. I now see some links that have been taken down- lawyers in effect.
If anyone else want more information/speculation just Google "Mike Cheiky".