Author Topic: Interesting Fuel Efficent Rotor.  (Read 3038 times)

Offline shaunwil

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Interesting Fuel Efficent Rotor.
« on: November 16, 2012, 06:02:35 PM »
Just reading Eureka (get it free every month) and came across an interesting new rotary engine !

Enjoy :

http://liquidpiston.com/newsdesc/nid/34.html

Shaun
1994 White FD with A-spec GT3574R - 358bhp at the hubs at 0.9bar :3gears-lh
2003 Mondeo 2lt 130ps Diesel Estate Daily :driving

Offline Grant Monkhouse

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Interesting Fuel Efficent Rotor.
« Reply #1 on: November 16, 2012, 06:27:56 PM »
Now that is a great idea! They should build a bigger one to show it works on an engine big enough to power a standard sized car

Offline SFW

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Interesting Fuel Efficent Rotor.
« Reply #2 on: November 16, 2012, 08:28:50 PM »
can it be turbo charged?

Offline shaunwil

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« Reply #3 on: November 16, 2012, 10:22:13 PM »
Early days by looks of things. Not much info on the site yet !

Shaun
1994 White FD with A-spec GT3574R - 358bhp at the hubs at 0.9bar :3gears-lh
2003 Mondeo 2lt 130ps Diesel Estate Daily :driving

Offline HaywardRotary

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We warranty our rebuilt engines for Detonation, track day\'s and RWYB and NOW for 30 months which is two and half years or 30,000 miles
We also build all types of race or road engines.
We build race and track cars too.
Any kind of porting undertaken.
Single turbo conversions.
S

Offline shaunwil

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« Reply #5 on: November 17, 2012, 04:26:55 PM »
Amazing, learn something new ever day :D

Shaun
1994 White FD with A-spec GT3574R - 358bhp at the hubs at 0.9bar :3gears-lh
2003 Mondeo 2lt 130ps Diesel Estate Daily :driving

Offline Kodiak

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Interesting Fuel Efficent Rotor.
« Reply #6 on: November 26, 2012, 11:32:33 AM »
Anyone else looking at that and seeing a Rotor Housing being used as a "Rotor"... And still imagining a Rotor going around the shape of the Kidney-bean.
 
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Offline Ricco_04

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« Reply #7 on: November 26, 2012, 07:40:20 PM »
Well the engine you have was described as a ":censored::censored::censored::censored::censored::censored::censored:ised" version of what Felix Wankle had developed!  \'His\' first prototype engine had a rotor rotaring one way and the housing the other.

Offline HaywardRotary

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Interesting Fuel Efficent Rotor.
« Reply #8 on: November 26, 2012, 09:49:50 PM »
Wankels 1st engines had rotor and rotor housings turning the same way but at different speeds. 2 to 3 ratio.
We warranty our rebuilt engines for Detonation, track day\'s and RWYB and NOW for 30 months which is two and half years or 30,000 miles
We also build all types of race or road engines.
We build race and track cars too.
Any kind of porting undertaken.
Single turbo conversions.
S

Offline shaunwil

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« Reply #9 on: November 27, 2012, 12:40:43 PM »
Must have made it difficult to get the inlets and exhaust ports in the correct place.

Shaun
1994 White FD with A-spec GT3574R - 358bhp at the hubs at 0.9bar :3gears-lh
2003 Mondeo 2lt 130ps Diesel Estate Daily :driving

Offline HaywardRotary

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Interesting Fuel Efficent Rotor.
« Reply #10 on: November 27, 2012, 03:12:39 PM »
Spark plugs were in the rotor faces! Engine needed dismantling to change them!

That having been said it was 125cc and did do 25,000 rpm!
We warranty our rebuilt engines for Detonation, track day\'s and RWYB and NOW for 30 months which is two and half years or 30,000 miles
We also build all types of race or road engines.
We build race and track cars too.
Any kind of porting undertaken.
Single turbo conversions.
S

Offline HaywardRotary

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Interesting Fuel Efficent Rotor.
« Reply #11 on: November 27, 2012, 03:13:11 PM »
Induction came through the e Shaft.
We warranty our rebuilt engines for Detonation, track day\'s and RWYB and NOW for 30 months which is two and half years or 30,000 miles
We also build all types of race or road engines.
We build race and track cars too.
Any kind of porting undertaken.
Single turbo conversions.
S

Offline dubber91

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Interesting Fuel Efficent Rotor.
« Reply #12 on: December 05, 2012, 09:35:15 AM »
With all of the benefits, High comp ratio, over-expansion of exhaust gas, it still suffers with some fundamental geometric limitations; namely combustion chamber shape and intricate inlet/exhaust ports. With liquid fuel, crevice losses will likely be very high, surface area to volume ratio (and therefore heat rejection) will be high and practical efficiency will be lower than expected.

The design seems to make the assumption that at the higher compression ratios, the fuel is not prone to knock; anyone can draw a PV diagram for a spark ignition engine that offers greater efficiency than diesel; but practically its unlikely to be acheivable.

Nice idea regarding atkinson cycle operation though - a longer exhaust stroke than compression stroke; although this doesnt look variable. It\'d be interesting to see whether the motor will still suffer with the low speed/power density issues conventional atkinson cycle motors suffer with. (or even more conventional engines with aggressive VVT that are given the name atkinson engines like the prius)

always an interesting read. I\'ve got some genuine japanese books written by the lead designer at Mazda, they consider many different rotary lobe designs, and summise well why the 3side rotor, 2-lobe design was chosen, ill see if i can dig them out.

Steve