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Fuel Efficiency (MPG)
#541 of 560 3 cylinder engines
Jul 29, 2011 (6:22 pm)
are going to be a very big thing in the future, I think. Even BMW knows it:
According to C & D: "...BMW’s new gas-fired 1.5-liter turbo three-cylinder, which we first reported on in April. It makes 220 hp..."
I bet every car maker has a crash program to make a good 3 cylinder engine.
And Ford already has a 1.0 liter ecoboost 3 cylinder turbo with direct injection, which is said to make about 120+ hp. That's enough to barely power a Focus-sized car, although with less power and slower acceleration than today's model. But it would have dramatically higher mpg.
#542 of 560 turbo 2 cylinder makes 100 hp
Jul 31, 2011 (5:50 am)
Talking to myself here, but .....
Fiat TwinAir 2-Cyl Wins International Engine Of The Year
Antony Ingram By Antony Ingram Contributing Writer May 19th, 2011
Fiat 500 TwinAir two-cylinder engine
Two cylinders. A quarter of what many Americans consider the correct number, half of what you'll find in most economy cars. It's even a cylinder and over 100cc short of the smallest car engine on sale in the United States, the one liter (61 ci) three-pot found in the 2011 smart fortwo.
Despite this, it's just won International Engine of the Year 2011. The motor in question is Fiat's 875cc (53.4 ci) TwinAir, inline, two-cylinder turbocharged gasoline engine as found in the European market Fiat 500.
Other than the unusually low cylinder count, what makes the engine so special? The technology behind it, the fuel economy and the low emissions, that's what.
TwinAir is a development of Fiat Powertrain's MultiAir engine, as found in the 1.4-liter Fiat 500 available in the United States. It uses electro-hydraulic variable valve actuation to control air intake into the engine, rather than using a throttle valve. This optimises the amount of air drawn into the engine, allowing good torque at low engine revs, good power for the capacity and improved economy and emissions.
Use of a turbocharger gives the 875cc TwinAir an extra boost of power for 84bhp. A naturally aspirated version is due with 65bhp and a more powerful variant with 105bhp, more power than the 1.4-liter available in the U.S. Fuel consumption is 51mpg city, 65mpg highway.
A jury of 76 journalists and industry experts from 36 different countries placed the TwinAir unit not only at the top of the tree overall, but also awarded it wins for best engine below 1,000cc, Best New Engine 2011 and Best Green Engine 2011.
Will TwinAir make it to the States in the future? It remains to be seen. The upcoming 105bhp variant proves that small engines need not be underpowered (remember, the 500 isn't a large, heavy car) but we expect Fiat will wait to see how the 500 performs on the U.S. market before expanding the engine lineup.
Jul 31, 2011 (6:36 am)
Ford might get close with its new 3 cylinder Ecoboost engine.
50 mpg? Ford bringing three-cylinder engines to U.S.
By Chris Woodyard, USA TODAY
Updated 06/05/2011 08:50 PM
A three-cylinder engine? It's been more than a decade since we've seen one, but now Ford is bringing a three-banger to America.
It's going to be a 1-liter turbocharged three-cylinder engine that will launch worldwide, including the U.S., and conceivably go into Ford's smallest cars, like that Fiesta shown above.
The tiny 1-liter engine is being designed at a Ford technical center in the United Kingdom. The goal is to create an engine that gets the same or better miles-per-gallon as a 1.6-liter four-cylinder engine. Ford isn't saying how many miles a gallon such a miserly powerplant could develop, but it already has some 40-mile-per-gallon models for the highway, and 50 mpg on the highway doesn't seem out of the realm of possibility.
The last time we remember three-cylinder engines being sold in the U.S. was on some Suzuki Swifts and a sister version from General Motors, the Chevrolet Metro, in the '90s. They got such astounding mileage ratings that even beaters were selling for top dollar when gas prices hit all-time highs in 2008.
"Consumers are telling us they want to buy affordable vehicles that get many more miles per gallon," said Derrick Kuzak, global product development chief. "Our new 1-liter EcoBoost engine will give consumers looking for hybrid-like fuel economy a new, more affordable choice."
He describes the new engine as "a little dynamo." Features of the new engine include:
An offset crankshaft that helps improve fuel economy.
An advanced, Ford-designed split cooling system that allows the cylinder block to warm up before the cylinder head. Faster cylinder block warm-ups save fuel, especially in cold weather.
An exhaust manifold cast into the cylinder head. The one-piece assembly lowers the temperature of the exhaust gases. This enables the engine to run in a wider rpm band with the optimum fuel-to-air ratio. The new design also saves weight and allows the engine to operate more smoothly.
EcoBoost technologies, such as turbocharging, direct injection and twin independent variable camshaft timing.
First seen in the Ford Start concept car that appeared at Beijing in 2010, the engine more recently made its European debut in the Ford B-MAX at the 2011 Geneva Motor Show. More details will be released in September at the Frankfurt Motor Show in Germany.
#544 of 560 2 cylinder hybrid?
Jul 31, 2011 (6:47 am)
I'm beginning to see how you might be able to hit 70 mpg in a car...Take a 2 cylinder turbo, add Toyota's synergy hybrid drive, and then put it in a Fiesta sized car.
With a 7 gallon tank you'd have a range of almost 500 miles. Even at $4 a gallon a fill up would be less than 30 bucks.
Sep 14, 2011 (2:43 pm)
"More than 400 dealers are set to fly to Washington in coming days to press legislation that would block the automobile rules for at least a year. They argue the new rules—which would raise the average fuel economy of new cars and light trucks to 54.5 miles a gallon over the next 14 years—would be too costly and lead to job losses."
Auto Dealers Oppose Proposed Mileage Rules (WSJ)
#548 of 560 mpg yet, loss of features, no
by Stever@Edmunds HOST
Oct 21, 2011 (7:24 pm)
"In some opinion surveys, consumers have said they want fuel-efficient cars. What people say they want and what they buy are miles apart, however. Small cars amounted to just 18 percent of U.S. vehicle sales in September, according to Edmunds AutoObserver. Alternative-fuel cars, including hybrids, plug-in hybrids and electric vehicles, represented 2 percent of auto sales in September."
What Do You Think About CAFE Standards? (Inside Line)
#550 of 560 Re: CAFE Standards Aim for High MPG [steve_]
by KCRam@Edmunds HOST
Nov 12, 2011 (6:01 pm)
We lost 25 years of fuel economy improvement because the government changed focus to safety improvement. In that time, NHTSA has mandated the high-mounted brake light, air bags, side-impact door beams, crash test standards, head restraints, tire pressure monitors, and a number of other items. The automakers told the government there'd be a trade-off, as some of what they wanted would create a weight increase - and power would increase so that the consumer would still get the performance they were accustomed to. Add in the repeal of the 55mph speed limit and customers needed cars to be able to reach 75+ as part of legal performance.
Except that the automakers raised the power bar far higher than it really needed to be. Performance cars in the mid 80s were considered to of the line with just 200hp. Now we have minivans approaching 300hp, and pickup trucks with 800 lb-ft of torque. (Just as a basis of comparison, the city-bus engine of choice in the 80s, the Detroit Diesel 6V92TA [9.0L turbocharged diesel V6], generated 753 lb-ft in most applications, moving a vehicle with an empty weight of 25,000 pounds.)
So now, the majority of vehicles sold today can snap off 7-second-or-less 0-60 times... while people are struggling to keep real-world mpg in the 20s.
With the new standards, the automakers are going to try the same tactic... "we'll make more fuel-efficient vehicles, but they'll have to be lighter, smaller, weaker, slower, and possibly less safe in some crashes." And the government will agree to that, and it will be the 80s all over again.
kcram - Pickups/Wagons/Vans+Minivans Host