• Feb 17, 2007
When Honda released information about the development of its Advanced VTEC (A-VTEC) system in September, we were looking forward to seeing how the new system would be employed in the next generation of Acuras and Hondas. The system will increase torque, power and fuel economy, all while oozing fewer emissions into the atmosphere. Good stuff, all of it.

Not much has been released since, but the variable valve timing obsessed folks over that the Temple of VTEC (TOV) came across a new patent filed by Honda entitled the "Variable valve actuation device." The setup is similar to BMW's Valvetronic system, by varying the lift and duration of the valves throughout the powerband, likely eliminating that abrupt, albeit entertaining, switch over to the hot lobes. It can be employed in both SOHC and DOHC applications and will likely find a home in the 2008 model Accord.

More power, more torque, less emissions, plus the option of a lightweight SOHC engine? Bring it.

[Source: TOV via Motor Authority]


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  • 39 Comments
      • 7 Years Ago
      2. BMW had this feature like over 5 years ago. It's about time somebody copied them.
      Posted at 4:56PM on Feb 17th 2007 by Rahul

      BMW made their changes to the variable valve timing technology. Now it's time for Honda to advance the technology to another level. These developments take time, but you can almost guarantee that Honda will make their changes count. BMW makes great cars, but Honda does engines like no other.
      • 7 Years Ago
      there seems to be some confusion by some in the comments, I'll try to clear things up.

      The old system, VTEC, had a 2-stage system that switched to the high-lift, long-duration cam at a set RPM.

      the current system, i-VTEC, added to VTEC with continuously variable valve timing, and the computer can decide when to switch to the high cam based on load, etc.

      the new system, A-VTEC, adds to i-VTEC with continuously variable valve lift.
      • 7 Years Ago
      #18 jj,

      honda tried to capture the market of bmw 3 series with tl type-s & tsx; both failed though both are good cars just not great.

      when people see current gen bmw 3 series, they often commented that "it looks an accord." would bmw copied the cues from honda accord? don't think so.

      it seems like honda failed to engineer great cars by pursuing perfect cars by numbers. however, with their culture & arrogance, we are very likely to see only perfect cars in the viewpoint of zealous engineers not the cars that drivers crave.

      if you drive new civic type-r & older gens of type-r of same car, you will know what i mean. it gets worse and worse in terms of excitement.



      #19 stoneman,
      yes, i agree with you; recent hyundai power plants are comparable with japanese counter parts though i think their design gold is bit off from the excitement. i read an article while ago about coming new i4 2.0l engine for the next gen tiburon (or hyundai coupe). it employed continuously variable valve timing for both intake & exhaust + multi stage (i think it was 2 stage) variable valve lift + two stage variable intake manifold; the result? 200+hp power & 150+lb-ft torque with 8000+rpm redline. they are still tweaking the engine, but it could put up to 240hp at 8500rpm with 155lb-ft torque on 91 oct. petro however, i think the production version will be like 200hp. hyundai is also considering a direct injection system.


      #20 nonamedenton,
      yes, i agree; they are japanese company whether they are doing productions here in america or not; however, it is better to see them to manufacture locally than overseas

      • 7 Years Ago
      Massimo, do you like having an IQ lower then your shoe size that you have to attack other people over the net to make yourself into a big man
      • 7 Years Ago
      oh joy another little cheap 4 cylinder engine.
      it's amazing that car company's advertise that their car makes "an amazing 180 hp" They should only mention the engine if it makes at least 300 hp.

      I guess we wont be seeing any honda or toyota commercials.
      • 7 Years Ago
      And it'll never break down. Fantastic!

      And #7...Malibu? You lack a little thing called "taste".
      • 7 Years Ago
      Isn't the Dodge VVT engine in the Caliber using this system? It is has variable valve timing throughout the rpm range
      • 7 Years Ago
      there's not one post in autoblog where u smartass dudes didn't bash up one another
      • 7 Years Ago
      #10 by jj,
      like honda isn't chasing bmw; the honda's bench mark for their car has been bmw 3 series for long time.

      anyway, i hope that a-vtec is a continuously variable valve timing AND lift system; however, i think it is continuously variable timing & 2 stage lift system unlike bmw

      another thing honda needs is a direct injector for petro engines...and variable intake manifolder (at least two stage) my honda lengend 2006 really needs a power plant upgrade.

      honda has been changed since late 90s; they had their own characteristics of edgeness especially type-r/s variants, but now, their power plants are far more civilized & good, but it lost the edgeness that true honda fans craving.

      yes, let's bring on something that will put a smile on my face
      • 7 Years Ago
      #7 What's this guy blithering about? Honda has a plant in Ohio and Alliston, Ontario. Is that close enough to the good ol' USA for ya? Incredible. There is always some shmuck that turns an interesting "automotive" post into an east vs west thing...
      • 7 Years Ago
      Ford and GM Donald, I consider Chrysler German until such time as it is spun off or sold
      • 7 Years Ago
      Thanks for helping me to comprehend that one Dent, it makes so much more sense now. LOL!
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