early January, DailyTech
on slow death of the V6 engine in mainstream vehicles. With new
CAFE regulations pushing for increased fuel economy -- to the
tune of a fleetwide 35.5 mpg average -- many manufacturers are
turning to direct injected four-cylinder engines and turbocharged
four-cylinder engineer to increase fuel economy.
it's not just the government that is shoving higher fuel economy down
the throats of auto manufacturers -- the buying public is also moving
en masse towards four cylinder engines. According to Edmunds,
percent of midsize sedans sold in the United States (think Camry,
Accord, Altima, Malibu, Fusion, etc.) come with a four-cylinder
engine despite the fact that vastly more powerful V6 engines are
available on the options sheet.
that a number of factors have resulted in V6 and V8 engines seeing a
sharp decline for 2009. Wards
cites that consumers have less money to spend these days, so more
fuel efficient four-cylinder engines which get better fuel economy
are being chosen. In addition, a sharp reduction in the production of
light trucks has contributed to the downfall of engines with six or
states that four-cylinder engines accounted for 61.9 percent of new
car sales for 2009 -- this compares to just 51.7 percent in 2008.
Whereas V8 engines were found in 88.9 percent of new cars sold way
back in 1969, that figure is just under five percent today.
sectors that are showing gains are diesel engines (3.7 percent market share), turbocharged engines (2.9 percent market share), and hybrid powertrains (2.4 percent market share).
like the new industry darling Hyundai are dropping V6 engines
entirely from its midsize sedan offerings. The new 2011 Hyundai
Sonata can currently only be had with a direct injected 2.4-liter
four cylinder engine (paired with a 6-speed stick or 6-speed
automatic) which produces 198 hp and get 35 mpg on the highway. Later
this year, Hyundai will also introduce a turbocharged inline-four
engine which will closely match the 35 mpg of its naturally aspirated
counterpart while at the same time delivering power comparable to the
3.5-liter to 3.6 liter V6 engines offered in vehicles like the Toyota
Camry and Chevrolet Malibu.
also plans to release a four-cylinder
hybrid variant of the Sonata before the end of the year to
complete the four-cylinder trifecta.
quote: Whereas V8 engines were found in 88.9 percent of new cars sold way back in 1969, that figure is just under five percent today.
quote: The only problem is the fuel quality in this country (especially diesel fuel) is so far behind the rest of the world that we can't properly boost cars.
quote: Torque is more important than HP for most daily driving situations
quote: That's universally understood, yes.
quote: "Horsepower sells cars, torque wins races."-Carroll Shelby
quote: A single torque figure says nothing whatsoever about a car's performance. A single HP figure, however, gives us a reasonable, though imperfect, approximation.
quote: 250 bhp sounds plenty enough for a car yes?
quote: It is powered by a single 1 1/2 Horsepower motor. You better believe that the motor has a crazy amount of torque
quote: That's universally understood, yes. Do you know any engines that make more torque at higher RPM's than lower ??
quote: plus you're comparing a 1969 truck to a MODERN car. That's a pathetic comparison right there.
quote: Lets look at a 2010 F150 with a 4.6L 2 valve V8. 248 HP @4,750 RPM. Also 294 lb,-ft of torque.
quote: The i4 you listed only has 260 lb,-ft of torque.
quote: If you really want to get into an argument how about..
quote: That's a better average than the Acura You listed
quote: Point is, sometimes a big engine isn't so bad after all.
quote: I thought that the supercharged 3.8 put out 240hp
quote: That means even more whiney little 4-cylinder cars slowing down traffic!
quote: My issue is the larger number of slower 4-cylinder mid size sedans that will be the cars that can't merge at highway speeds
quote: But it costs so much more and takes so much out of the the fuel economy that people can't justify it.
quote: But would you pay an extra $3000 for the V6? I certainly would.
quote: I think I'll keep my 8.1L V8, thank you very much.
quote: It is just a question of attaching a trailer and hey presto!
quote: The laws usually just deal with requirements of your trailer.
quote: paired with a 6-speed stick
quote: According to Edmunds, 90 percent of midsize sedans sold in the United States...come with a four-cylinder engine despite the fact that vastly more powerful V6 engines are available on the options sheet.
quote: Please don't bring up the fat pig 370z. Its a disgrace to the rest of the Z cars.
quote: What Mazda has invested in these types of engines is nothing compared to the investment of the combined spending of every other car manufacturer in the entire world.
quote: Is the Wankel an inherently less efficent engine?
quote: I really can't believe that 110 years ago someone was so innovative and creative that they invented the cylinder based engine that would rule all forms of transportation from that day on
quote: 1) inefficient
quote: 2) cannot have VVT (to improve efficiency and power) as their are no valves. You would have to figure out how to change the size of the intake / exhaust ports on demand to do something similar.
quote: 3) have to be wound up pretty high in comparison to cylinder based solutions to produce any usable amount of torque.
quote: So wankles are good for turning a propeller / rotor (you mostly see them in the air industry ) and for use in confined areas. I could see them adapted for use in a petrol-based battery recharging system, but not as the direct power plant for the vehicle of the future.
quote: Later this year, Hyundai will also introduce a turbocharged inline-four engine which will closely match the 35 mpg of its naturally aspirated counterpart while at the same time delivering power comparable to the 3.5-liter to 3.6 liter V6 engines offered in vehicles like the Toyota Camry and Chevrolet Malibu
quote: 35mpg using petrol AND with 268hp/248lb is impressive, not to mention with their killer warranty.
quote: If the top safe speed is 120, why is 150 better than 130?