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What Are Smallest Current US Engines?

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  #21  
Old 05-24-2010, 12:40 PM
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Originally Posted by hayden
I agree, but unfortunately some of our lowest paid demographic needs the largest vehicles for work. Japan has the advantage of being densely populated. It's the auto makers that need to shape up. We all know the evolution of the internal combustion engine has been halted by big oil over the years.

Then you got people like Raphial Morgado and his MYT (massive yet tiny) engine. If this goes into some form of production, it will take the cake! Fascinating stuff for those who have not seen it. Has it's believers and critics of course.

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Farmers always get subsidized and would surely get a break....... The MYT sounds a lot like an improved version of a two stroke that Can Am ran in a Bonneville record attempt in the late eighties.
 
  #22  
Old 05-24-2010, 12:58 PM
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Originally Posted by nikita
Flex-fuel, DI, i-Vetec (and similar from other makes), cylinder deactivation, 10+:1 compression on 87 AKI gasoline, etc. means "halted"?
How about "slowed." It's not like I am going to pull out facts for you to go on, but even diesel passenger engines' uphill battle in the states is evidence of the efforts by big oil companies to keep us consuming and filling their coffers.

All those things you list are just the companies doing the best with what they got. What is perhaps most interesting is why battery technology has not made the types of advances that other technologies have. I am not expert on this, but I do know that funding leads to innovation and more funding makes a product viable in the market. Solar too.

Nicola Tesla's supposed electric vehicle from 1931 is the ultimate conspiracy theory on matters like these. Tesla electric car - Wikipedia, the free encyclopedia

Supposedly the FBI confiscated all of his files at the time of his death. Who knows. It doesn't take a genius though to see how the money and oil link have been a mainstay for America's elite - who don't have a great track record in the virtuosity department.
 
  #23  
Old 05-24-2010, 01:35 PM
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Originally Posted by Texas Coyote
Farmers always get subsidized and would surely get a break....... The MYT sounds a lot like an improved version of a two stroke that Can Am ran in a Bonneville record attempt in the late eighties.
It does help. I'm wondering about construction workers, landscapers and delivery businesses, etc. Most of those are licensed or can be licensed positions, so it's not out of the question to gets some new policies in place.

I'm not familiar with that engine, and the MYT confuses me. I liken it to some kind of rotary, but with multiple firings per cycle. ???
 
  #24  
Old 05-24-2010, 01:58 PM
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Originally Posted by onemiglandicho
Yeah I know. I was surprised to see that comp. ratio too.

But if you do the math, the fit still has a little edge on power density per liter.

Fiesta: 120/1.6 = 75 hp per liter
Ge8 Fit: 117/1.5 = 78 hp per liter

But of course torque plays an important role also. I'm not sure on the how much the torque is on the Fiesta.

High compression ratio engines that run on regular octane fuel is possible now a days because of the introduction of under piston oil jet/spray that cools the pistons (With the 1.8 civic engines at least.). But judging from the comp. ratio figures we are seeing with the Fit and Fiesta, it may very well be also equipped with under piston oil jet IMO.
Add an intake (~4hp) and that shoots the 117hp to 121hp out of the 1.5L = 80.6 hp per liter

Not as good as my CL-S 260hp/3.2L but close = 81.25 hp per liter.
S2K's are 100 hp per liter.
 
  #25  
Old 05-24-2010, 02:04 PM
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Originally Posted by Committobefit08
S2K's are 100 hp per liter.
Give us 2000 more rpms and we might be in there.

Speaking of - I saw this video last night where someone has increased their redline to what looks like 7500 rpm (claimed 8000) on a GE8 with a chip. Not sure if that did anything for them, but I thought it was cool.

YouTube - 8000rpm Honda FIT 1.5 RS
 
  #26  
Old 05-24-2010, 02:53 PM
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Originally Posted by hayden
Give us 2000 more rpms and we might be in there.

Speaking of - I saw this video last night where someone has increased their redline to what looks like 7500 rpm (claimed 8000) on a GE8 with a chip. Not sure if that did anything for them, but I thought it was cool.

YouTube - 8000rpm Honda FIT 1.5 RS
Interesting. Yea its def. 7.5K but I don't know if its good for the engine. Redline is there for a reason. I wouldn't be surprised it will have its toll on the engine life if it's pushed past that a lot.
 
  #27  
Old 05-24-2010, 02:57 PM
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Originally Posted by hayden
, but even diesel passenger engines' uphill battle in the states is evidence of the efforts by big oil companies to keep us consuming and filling their coffers.

All those things you list are just the companies doing the best with what they got. What is perhaps most interesting is why battery technology has not made the types of advances that other technologies have. I am not expert on this, but I do know that funding leads to innovation and more funding makes a product viable in the market. Solar too.

Nicola Tesla's supposed electric vehicle from 1931 is the ultimate conspiracy theory on matters like these. Tesla electric car - Wikipedia, the free encyclopedia
Passenger car diesels were stopped by the environmentalists, especially the California Air Resources Board, due to legitimate concerns about particulates and NOx. Big Oil goes to a lot of trouble to increase gasoline yield from refineries. Diesel is easier to make, leading to generally higher profit margins.

Cell phones and laptops have given us better battery technology, but its still expensive. Unfortunately, you cant repeal laws of physics. The upcoming Nissan Leaf all electric will only come to market at a somewhat affordable price only if the UK government comes through with heavy support for the battery factory, along with a US direct subsidy per car. It will still take a $17,000 device to recharge it in 30 minutes instead of a day. An ICE powered car can be refueled in five minutes or so.

I just read the linked article. A few vacuum tubes and a six foot antenna can transmit enough power to propel a 1930's production automobile? The article pretty much stated the story as a hoax.

How much government funding do you want and do you want it permanent because the numbers sometimes just dont add up. Sometimes, no matter how much money is spent, an idea can prove impractical. Please learn some real Chemistry, Physics and Thermodynamics before buying into this conspiracy stuff.

Rant over.
 
  #28  
Old 05-24-2010, 03:11 PM
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I agree that diesels have had problems for those reasons, but I thought low sulfur fuel was supposed to help, and it has from what I can tell by the new slew of products out there. That lack of fuel available to us is an oil company issue, no? What about biofuels and farming? Why hasn't that been promoted if it works and does not pollute?

Also, with regards to battery technology, I stated that with funding, not necessarily subsidies, it, as well as anything, can be progressed more quickly. What causes technological advancement anyways?

I'm not buying into anything. Just reporting - and you will note that I said it was the ultimate conspiracy theory. I'm not going to defend Tesla - that would be stupid. All I know about him is that he must have been pretty darn smart to have invented what he did.
 
  #29  
Old 05-24-2010, 04:39 PM
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Originally Posted by Committobefit08
Add an intake (~4hp) and that shoots the 117hp to 121hp out of the 1.5L = 80.6 hp per liter

Not as good as my CL-S 260hp/3.2L but close = 81.25 hp per liter.
S2K's are 100 hp per liter.
.......

Just a modest correction. Honda has the greatest specific output non-turbo engine ever in production in the 2000 - 2003 S2000. It uses an earlier version of VTEC, and gets 240 hp from 2.0 liters. That is an incredible 120 hp/liter, and this goes with a 9000 rpm redline, since the peak hp comes at 8300 rpm.
 
  #30  
Old 05-24-2010, 04:47 PM
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Originally Posted by jelliotlevy
.......

Just a modest correction. Honda has the greatest specific output non-turbo engine ever in production in the 2000 - 2003 S2000. It uses an earlier version of VTEC, and gets 240 hp from 2.0 liters. That is an incredible 120 hp/liter, and this goes with a 9000 rpm redline, since the peak hp comes at 8300 rpm.
oops I was thinking the s2k had the 2.4L like my TSX. Forgot it had the 2.0L...honest mistake. Thanks for the correction.
 
  #31  
Old 05-24-2010, 06:47 PM
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Originally Posted by Committobefit08
oops I was thinking the s2k had the 2.4L like my TSX. Forgot it had the 2.0L...honest mistake. Thanks for the correction.
...

It became 2.2 liters starting MY 2004. The redline dropped from 9000 down to 8000, but the horsepower remained at 240.
 
  #32  
Old 05-24-2010, 07:21 PM
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Originally Posted by Ein
But, with 2 cylinders.
So? A Ducati gets about 150 bhp out of 2 cylinders displacing about 1200cc. HD engines are tuned for lots of torque at very low RPMs, not horsepower.
 
  #33  
Old 05-24-2010, 08:03 PM
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Originally Posted by jelliotlevy
.......

Just a modest correction. Honda has the greatest specific output non-turbo engine ever in production in the 2000 - 2003 S2000. It uses an earlier version of VTEC, and gets 240 hp from 2.0 liters. That is an incredible 120 hp/liter, and this goes with a 9000 rpm redline, since the peak hp comes at 8300 rpm.
Is that the greatest specific output in a 4-wheeled vehicle? The bikes above clearly exceed that. I wonder if the reason that even cars like the S2000 have such low specific output compared to bikes is due to the need for low end torque to get the vehicle moving in the first place... and the fact that the strain placed on the engine by the weight of the car would likely wear the engine out very quickly. A supersport make spend most of it's lifetime cruising in the 7-9K range, with a 14,000+ redline, but it's not expected to last for 100,000 miles with only minor upkeep.

Interesting comparison:



You can see the real to-the-ground HP for a stock GD Fit was tested at 95 hp in this dyno.

here is a 1.3 Litre Hayabusa dyno:


Just for fun, check out the high revs needed to overcome the limited torque on the 600cc CBR!


I'm guessing that despite the OHC layout, the Fit cannot be revved very high because of the undersquare engine. Just a guess, anyway.

BTW, torque is usually about even with an engine's displacement in cubic inches. The Fit's 1.5L is right around 91 CI.
 

Last edited by Occam; 05-24-2010 at 08:24 PM.
  #34  
Old 05-25-2010, 08:55 AM
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[quote=Occam;860994]Is that the greatest specific output in a 4-wheeled vehicle? The bikes above clearly exceed that. I wonder if the reason that even cars like the S2000 have such low specific output compared to bikes is due to the need for low end torque to get the vehicle moving in the first place... and the fact that the strain placed on the engine by the weight of the car would likely wear the engine out very quickly. A supersport make spend most of it's lifetime cruising in the 7-9K range, with a 14,000+ redline, but it's not expected to last for 100,000 miles with only minor upkeep.
..

To the best of my knowledge the S2000 has the highest specific output for a non-turbo automobile produced in regular quantities (excluding super exotics). I might be wrong, but I hope not. For the 2.0 liter earlier year models (commonly referred to as Ap1), the peak torque is only 153 lb-ft @7500 rpm, with peak hp of 240 hp @8300 rpm. The VTEC kicks in hard at about 6000 rpm. Below that, the torque is somewhat less, only about 135 lb-ft from the curves I have seen.
The gearing of the S2000 is rather short. 6th gear at 60 mph corresponds to about 3300 rpm. Compare this to approximately 2100 rpm at that same speed for a Fit Sport with automatic.
 
  #35  
Old 05-25-2010, 10:00 AM
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[QUOTE=jelliotlevy;861269]
Originally Posted by Occam
Is that the greatest specific output in a 4-wheeled vehicle? The bikes above clearly exceed that. I wonder if the reason that even cars like the S2000 have such low specific output compared to bikes is due to the need for low end torque to get the vehicle moving in the first place... and the fact that the strain placed on the engine by the weight of the car would likely wear the engine out very quickly. A supersport make spend most of it's lifetime cruising in the 7-9K range, with a 14,000+ redline, but it's not expected to last for 100,000 miles with only minor upkeep.
..

To the best of my knowledge the S2000 has the highest specific output for a non-turbo automobile produced in regular quantities (excluding super exotics). I might be wrong, but I hope not. For the 2.0 liter earlier year models (commonly referred to as Ap1), the peak torque is only 153 lb-ft @7500 rpm, with peak hp of 240 hp @8300 rpm. The VTEC kicks in hard at about 6000 rpm. Below that, the torque is somewhat less, only about 135 lb-ft from the curves I have seen.
The gearing of the S2000 is rather short. 6th gear at 60 mph corresponds to about 3300 rpm. Compare this to approximately 2100 rpm at that same speed for a Fit Sport with automatic.
As seen above, that's not a particularly impressive specific output for a motorcycle engine mass produced by the exact same company, so there must be more to the story. I wonder if its simply because nobody would buy a car engine that had to run at 5000 RPM to roll along at 60. Yes, technologically, it's no challenge to make it rev up well beyond 10,000 RPM, but without the space and extreme weight considerations of a motorcycle, it's cheaper and more pleasing in a car to just up the displacement and enjoy better torque.

Interesting thread though.
 
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