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I say the addition of VVL to the 2.5L SOHC engine WILL improve its peak power and torque.
Here's how the VVL system in the Outback 3.0R engine works, as described at a Subaru site. I'd expect the engine is using the low cam lobes when its cruising on a flat highway at 65 mph.
BTW, I don't care whether any other manufacturer has ever used VVL in the past. I only care that Subaru is now implementing it in its future models.
2. I say the addition of VVL to the 2.5L SOHC engine WILL improve its peak power and torque.
_________
1. Yeah, yeah. You knew exactly what I was talking about.
2. I don't disagree, but I see this as a consequence of being able to use a camshaft and other valvegear optimized for higher RPM and still get good cruising MPG thanks to the VVL. I am quite sure that closing an intake valve will not net you more peak torque or HP in and of itself.
Gains will be had by increasing lift and duration... the old-fashioned way.
If this new 2.5L engine still only revs to 6250 rpm I will quietly eat my humble pie.
~Colin
We'll see. So far redline is unlisted.
-juice
Semantics indeed.
Closing one of two intake valves can increase swirl within the combustion chamber. That swirl mixes the fuel/air more completely, allowing for more even combustion. More even combustion means more direct pressure on the piston (very slight boost in performance). And because none of the fuel is left "un-combusted", less of it needs to be pumped in.
You get more power from less fuel, but not necessarily more power overall. The primary benefit is better fuel economy.
This also helps with emissions. Any unburned fuel will be ejected with the exhaust gases. The less that happens, the better.
I haven't studied the Subaru system well enough, but typically this sort of VVL is used for low rpm operation. When the engine reaches high rpm, good swirl takes a back seat to more air.
Mind you... None of that has anything to do with the valve-phase control described in Jon's link. Combining the two provides some interesting benefits, but the best designs (from a performance perspective) are those which modulate valve phase and valve duration. Controlling duration means more time to get air into the chamber. And control over phase means air can get into the chamber sooner, which is important for Hondaesque high-rpm operation.
Adding forced induction may alleviate some of the need for control over duration. Adjusting the pressure of the turbo may be enough to cram more air into the cylinder regardless of the valve opening. I'm one of those Honda NA guys, so I'm not very good with FI.
Subaru of America will launch a new U.S. advertising campaign from its new ad agency this Monday around the slogan, "Think. Feel. Drive." The theme is already running in Japan and parts of Europe.
The advertising effort, crated by new agency DDB Needham, replaces "Driven By What's Inside," which had been created by TM Advertising.
The first two ads, according to Subaru dealers who have seen the work, are print ads that lay out an explanation of the new slogan. There is also a TV spot, which shows Subaru cars making full use of their all-wheel-drive technology while other cars are shown driving on only their front wheels with the back of the car sticking up in the air like wheelbarrows. Subaru sales were up seven percent in February and are about flat from a year ago. Sales are expected to climb this year, however, in part on the launch of the Tribeca SUV, which hits dealerships in the fall.
-juice
The full page in the Wall Street Journal today seemed to me to be a waste of money. As a Subaru owner I read it, but it probably seemed uninteresting to most.
However the small ad for the Forester that appeared elsewhere in the Journal was to the point.
Dave
the full page ad was DRIVING me to THINK that this ad would FEEL and read better after a few bong hits. this ad made me feel like i was at a meeting that i didnt want to be at with some dude showing these things via powerpoint. yawn.
i dont know, guess i dont care what the latest slogan is, just the facts. i mean shouldnt they all have a slogan like 'our goal is to make lots of money'?
i agree with juice the forester ad was kewl except with a few minor mods
instead of think safe, how about think about doing 4 wheel drifts?
instead of feel safe, feel that smile as ya smash the accelerator in your xt?
instead of drive safe, have bob standing with his helmet on?
-juice
-juice
Because some web developers feel they have to use a hot/cool/bleeding egde technology to show how advanced they are. IMHO, many work in a vacuum wrt what users actually have at their disposal. Not everyone has a T3 line to download stupid movies and huge graphics files just to get product infomation.
Rant Off.
-juice
Ken
Nicholas
Craig
-Frank
The video seems almost remedial, using stock footage and hoaky slogans. Also, am I wrong, or was the montage of AWD layouts during the video actually showing competitors' layouts that are not symmetrical? If so, pretty cheesy.
Elliot
You can register here, and get all the info:
http://www.subaru.com/ny
I'm going to check it out Saturday. From what I understand there will be food and you will be able to sit in the cars. Should be fun.
Bob
"Once you get it, you get it."
"Driven by what's inside."
"Think.Feel.Drive."
I don't get it-- any of them. I give SOA marketing a D- on their group project in Corporate Identity 101.
~Colin
Bob
Bob
xt has a hood scoop. doesnt mean sti. how big is this hood scoop? same size as the wrx sti?
Bob
Bob, Im sorry I'll miss you- I'm planning to attend the Skyloft event on Friday night. Anyone in the area going then?
-Joe
http://www.fhi.co.jp/english/news/press/2003/03_10_22e.htm
Anxiously awaiting word from NY,
-wdb
Bob
For example, most advertising agencies, such as those used by the auto companies, insist on its use for web sites that carry there ads. Been there done that for Ford ads on one site I owned a while back. I doubt Subie is any different
As far as company sites. If all you want is a static site, the merits are limited. But what if you want interactive car tours? Mini-driving games? Build your car to order apps? Add that you want all your users to see the same thing, and for it to work for them. Then a very strong argument can be made for flash as the way to go
As an example, on a Non-flash site, I would have to code 5-6 versions at a bare minimum for anything interactive, and even then then capabilities/layout of a site user X sees may differ quite greatly from user Y. . . With dreaded javascript errors as a likely event for a good portion of my user base - it just won't look professional.
Believe it or not. Once you step beyond very basic HTML, browsers are like cars with different parts for different browsers, even among the same family/versions. And all have "character" (read bugs) that you have to code around
FYI Flash can smaller than typical sites or bigger, up to the coders to know how such things work. And, yes I agree the capabilities of flash encourage one to go wild and add all sorts of stuff - if you don't focus keeping it a clean design.
N/A 2.5 engine 173 HP
Turbo 2.5 engine 230 HP
no torque figures,sorry!
4EAT w/o SportShift.
No 6-speed
I was hoping for more power from the N/A 2.5, and am disappointed that no 5EAT is available; same with the lack of the rumored 6-speed.
I wonder if the turbo actually makes more power, or if it now has "real" hp ratings?
Bob
Bob
Here's a challenge for anyone who loves flash websites. After clearing your browser's cache, access www.subaru.com via dialup and tell me how long it takes you to discover which, if any, Forester models are available with a Sportshift automatic transmission.
Bob
½ taller height so they can play the CAFE games?
what a disappointment