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Comments
Idiocy, SHEER IDIOCY...!!
In order to turbocharge an engine it MUST be derated/detuned when running off-boost. And Yes, turbocharging is a neat engineering way, even economical, FE, way, to get more HP/torque from a smallish lighweight engine. But just how often do you get to take advantage of that FE when 95% of the timeyou're simply driving along at a relative constant speed running in the engine's detuned/derated mode, POOR FE mode.
Business Week recently had an article touting the use of the Ford "ecoboost" engine to raise the HP of the Explorer from 210 HP to something more like 300HP. Why not remain at 210HP and have absolutely STELLAR FE..??
Why not use a variable intake valve closing technique to run the engine in a HIGHLY FUEL EFFICIENT Atkinson mode for cruising and then incrementally transition to Miller cycle mode as boost begins to rise when you "ask" for acceleration level HP/torque..??
And don't deny yourself; small displacement turbos are the way of the future.
They just sound cool. Too fast too furious :shades: !
I suppose we ARE the demographic - And the pet toting idea was also planned by Toyota!!
See: http://blogs.automotive.com/6446761/auto-shows/2009-toyota-venza-getting-howls-o- f-approval-from-pet-owners-animal-lovers/index.html
Which is a press release from Toyota TO pet owners...
That said - I am STILL looking for a metal tubed pet barrier for the Venza we just ordered!!
Best -
The problem is that a method needs to be found/discovered so the 1.3L engine can run in cruise mode without being detuned/derated.
Without starting an argument, there is no way the 2.0 feels like a V8 when you get on it. It does almost feel like a 6, but the complete lack of torque is tell-tale. I'm no hater, I love the sound and feel of a well tuned VTEC in its upper rev-range. I just think you'll find that most members of this board have never been near the 7400rpm that the Acura needs to produce 200 hp. Too many consumers buy in to "peak" hp and torque numbers in ads without realizing that most vehicles spend more than 99% of their time well below these values.
FWIW, modern turbos don't need more maintenance than NA high compression engines.
We aren't talking about 80s Chrysler turbos here. We are talking things very similar to the VW Passat, which is a midsize+ vehicle with a 1.8 or 2.0 4 cylinder with a very small, very responsive turbo. The turbo is so small that it spins up very quickly, with very little lag (the tiptronic people report more lag...imagine that...slushbox) and at cruising speed, the car is just over the torque threshold.
Insofar as I know there is NO modern day turbocharged engine/drivetrain designed to run on-boost when cruising US highways at legal speeds. So, when simply cruising along you're running a detuned engine ~99% of the time.
But this all started with wwest comment about DFI. I mentioned VTEC as another idea, and we were way off topic. Remember the old stories about the inventor whose patent for a 100 mpg device was bought by the car companies, I suspect Toyota's engineers are investigating every idea they can think of to make their cars "green," use bio fuels, extend maintenance, and be price competitive.
Yes, it could, but not in the hands of the kind of "boy-racer" mentality drivers attracted by ZOOM-ZOOM and TURBOCHARGED...!!
"...Toyota's engineers are investigating..."
NOT...!!
A newly "minted" I4 without DFI........
Put a variable intake valve closing delay system in a small turbocharged DFI I4 and you could easily get 35+ MPG. Highly fuel efficient Atkinson cycle mode during off-boost cruising and then transition into Miller cycle mode as boost comes on/rises.
I am enjoying this discussion, and learning from it. Thanks to you both.
Enter politics: This administration seems intent on requiring auto manufacturers to market "green" vehicles .... so it will be interesting to see if they will be able to "produce vehicles for the consumer market." I predict the push from congress will be for smaller, lighter, electric, bio, hydrogen, and hybrid engines. I also suspect, the buying public will reject such efforts ..... you cannot pull boats, ski-mobiles, and RV with such vehicles, or, haul American size families around. This will set the stage for "use taxes" that will enable one to purchase permits to exceed the "carbon footprint." Far fetched? .... Don't count on it.
Back to the Venza. I still have not driven either the 4 or the 6 cyl. I am in no hurry, and by waiting, I will have an opportunity to see what Honda offers in the Fall.
Keep up the discussion. And, new owners, keep us informed on your owner and driver experiences.
And rebate a portion of the taxes at the end of each year based on a vehicle's consumption efficiency rating. For instance a Prius would get you a 70%/gal rebate, and a Ford expedition or Chevy Denali....ZIP. Obviously a different "scale" would be needed for commercial, non-passenger, use vehicles.
0-60mph advertising would cease instantly.
While normally optimistic ...... my fear is congress. We shall see.
Thanks!
PLEASE!
If I was interested in turbos or gasoline politics, I would be elsewhere.
Got 1300 miles on my Venza now. It continues to delight. I'll be making a road trip to the smoky depths of Arkansas (from BR, Louisiana) Monday. So far, I've been bouncing between 22-24 mpg... as advertised. Be interesting to see what the mileage is on the trip.
To avoid the 'problem' of the new Highlander and Venza being labelled 'underpowered' they intentionally did not drop the new 2AR 2.5L engine into these two vehicles. They created a completely new more powerful 1AR 2.7L I4 with nearly 190 hp. The performance of this I4 is well within the expectation of at least 60% of the typical buyers. Those that demand more power can opt for the 2GR 3.5L.
They had initially planned to build more V6s at the rate of about 60/40. Initial reactions from marketing tests indicated that this ration should be reversed if not increased to 2 : 1 favoring the I4. It's that good.
Just a few years ago that sentence would have ended...
preference for V8 power.
I had hoped for a more cushioned ride and I wish the driver's seat felt more cushy too. The thought of topping it with a memory foam cushion comes to mind. I read that someone else found a heated seat less than comfy too. My salesman won't encourage me to hope that the Michelin tires might feel better than the Goodyears.
Anyone else interested in these comfort concerns? Everyone else totally satisfied with these two things?
Steve from Baton Rouge, how are the comfort levels for you???
What you will find I believe is that while the V6 has much more power and is quieter and smoother it kinda 'flows' into traffic. The I4 'jumps' into traffic.
But that's why buyers do test drives.
My Ford Aerostar has memory/heater/leather seats from an RX300.
Ford "C" MH has 97 ES300 memory/heated/leather seats.
As far as the Goodyears just stick it out and try the Michelins for your next.set of tires
My Ford Aerostar has memory/heater/leather seats from an RX300.
Ford "C" MH has 97 ES300 memory/heated/leather seats.
I think that is more challenging in a modern vehicle. They have seat sensors the provide info on the weight of the passenger in the seat (if there is one) and the position of the seat. This information is provided to the active and passive safety systems so it can optimize airbag deployment, etc. Swapping seats my compromise that. I don't think that was true as much with trucks from 10 years ago.
Isn't the current Venza called a 2010?
Regarding the 27.3 mpg requirement: Is that a standard for a "corporate average fuel efficiency" I believe that is what CAFE stands for? In that case, Toyota could achieve a 27.3 CAFE if they average in the Prius. They may just need to produce more Prius. The article did not stipulate it was CAFE, it just said 2011 models.
Also, is the 27.3 an average city/highway?
The Venza is in a pretty favorable position to achieve the figure for highway, especially the 4 cylinder. I wonder what "tricks" Toyota has to improve efficiency? Too bad the Venza is carrying so much weight.
I am just rambling ... anyone read anything more definitive?
Thus the Venza would be in the 30 mpg range for CAFE.
But it's an average of all vehicles weighted for sales volume. Don't worry about it Toyota is far ahead of the curve in this.
The new CAFE 35 which is due to be fully implemented in 2020 has certain interim levels that the industry has to meet ( not each vehicle maker ). Essentially in 2020 the entire industry has to average about 35 mpg weighted for sales volume. Each maker has to be within 92% of that 35 mpg number. But again this is under the old 1970s tests which are 20% higher than the current EPA numbers.
Any vehicle in 2020 that is higher than 27-28 mpg in EPA fuel ratings will be above the average. That's a LOT of vehicles.
Yes, MY daily driver is a 99 Tacoma x-tra cab. with a 2.7L I4. One person I talked with at the dealership we ordered our new Venza from thought that it is the same block as my truck with a new double variable valvetrain head mounted to the top. That said, we ordered the V6 after driving both the I4 and the V6 back to back. Smoothness and brute acceleration onto a Hwy pushed us toward the V6...
Also, the "City" milage numbers I think only varied by 2 MPG and the far majority of the Venza's life will be spent at 35 MPH and slower. My truck is fine but looking at MPG ratings, it seems that the same vintage V6 truck does BETTER in both city and Hwy numbers than my I4...
Best
Local news report last night said Hybrids are piling up dealer lots. New rebates and incentives will make them more economical until gasoline goes back up $4-5 this summer!
I agree, that Toyota is planning ahead, and will offer a hybrid Venza when the demand is there, but I doubt they will rush it into production with sales of hybrids lagging.
http://www.michelinman.com/tires/suv-crossover/latitude-tour-hp/43577/
Someone asked here about the handling in the snow. I did not have any problems at all during the last 6-8 inches of snow in I-95
"Better Handling in Rain and Snow
2-D Active Sipes help deliver better handling in rain and snow by locking together for greater rigidity"
I was ready to buy till the sales mgr. announced that the 10 Avalon would hit the showroom in Sept/Oct. this year. No details but he said it would be all new.
MD
Maybe, but some of us sometimes try to buy higher end stuff so we can avoid expensive maintenance and repair in future years.
And sometimes paying a premium up front seems to tell the manufacturer that they can charge a premium for parts and labor down the road (why should that follow?).
And sometimes it seems that manufacturers think it's not a big deal to spec oddball sizes of wear and tear parts, limiting your choices in the future.
At least they aren't runflat tires eh?
The Edmunds/Inside Line site photos are good and all, but it's really nice to see some owner pics of their cars in real life settings. So please set up your CarSpace page and post some pics. Thanks!
One thing I need to ask from other owners, is this true?
"power closer that ensured doors shut without slamming" - I know for the rear hatch but other doors?
See more Car Pictures at CarSpace.com