ECT Power button disables Atkinson Cycle ? I think so

@because_minitruck
no kidding, we were having a decent dialogue on here until @gottaToy reared his ugly head. He's done it before on a different thread regarding a similar topic. It appears he is obsessed with all things ETC, has a general understanding of what it does but can never produce any hard facts of how it works. He usually hangs out on the 2nd gen side giving useless or very common info, but when ETC subject comes up anywhere he's all over it. I'm willing to bet he has an ETC poster hanging over his bed maybe even an ETC shrine.. who knows with these weirdos.

 

Ha, I was thinking that about you. You were that really smart kid in school that reads everything and gets straight a's and comes up with ideas on paper, but have no idea how shit really works in the real world. I bet a crescent wrench is your favorite tool? I deal with these idiot booksmart "technical" people all the time, and the dummies couldn't change a spark plug. I think you may be one of them

 

No, It funny turd gens think they are getting extra power by the push of a button because they cannot grasp the concept when the engine revs up and changes the torque curve, the engine may "feel" like it has more power, but in reality it doesn't. than they argue the crap out of it because they don't get the response they want. Kinda like when a guy brags about his rough country lift and you tell them it is shit.
@tacitos , when you getting your rough country lift?

 

@gottaToy An engine does not change a torque curve when it revs up.. A torque curve is a measurement of an engines torque output throughout its rev range. The torque curve remains 98% consistent based on how the fueling is mapped. It will adjust slightly when the ECU detects changes in elevation or fuel quality / fuel delivery.

Please try again... btw where should I send my invoice for tutoring you?

 

I just wanted to interject that if you are going to call someone a moron , you should sort out your usage of your and you're , otherwise it just doesn't seem as genuine

any rate , carry on

 

noted.. its hard to type correctly when your laughing at and trying to communicate with a troll..

Btw.. i've read most of your thread, interesting log you have there.

 

you're

 

'At any rate'

 

Sorry my friend , that train has left the harbour , get your own material

 

What?

 

the torque is relevant to rpm, not a constant. As shown by a dyno use supposedly have used, torque value changes with rpm. Now where the torque rise may occur is different among engines, and with a weak ass toyota, not worth measuring. That is why we have 4LO
Maybe you should start a thread about this theory you have mentioned a few different times about about how the ECU controls lift and duration of valves, I still find that fascinating. I mean, if that was possible, why the hell they even have a camshaft for? Shit, think of the possibilities, IF that was how and engine actually functioned, they would even need a rotating assembly. Instead of the rotating assembly(you know what that is, right?) they could replace the crankshaft and rods with electronics to make the pistons go up and down just like the electronically controlled lift and duration like the valves. Damn, they could even use the pistons for an engine brake without all the extra parts they use for big rigs.

 

@tacitos With all your dyno experience, tell me. Are you measuring horsepower?

 

Yes. Truth be said we are all just guessing otherwise.

 

horsepower is measured, what is your question?

 

So your not aware of how the Atkinson system works in the new tacoma. If the ECU detects a light load or power demand from the driver, it will switch the VVTi cam system into a setting that adjust the intake timing so that during the compression stroke the intake valves stay open longer allowing fresh air/fuel gasses to escape back into the intake manifold. This reduction of air/fuel mix during the compression stroke allows the engine to run with less power output and fuel consumption.

Therefore, yes the ECU uses the VVTi system to control lift and duration of valves.

 

WRONG, a dyno measures torque and horsepower is a calculation.

it changes cam shaft timing, it doesn't change lift or duration. Lift and duration is how the camshaft is machined and can't be changed on the fly. that's why it is called variable valve TIMING.

 

Actually there are systems that can vary lift and duration too, but I have no idea if Toyota is doing that on any of their vehicles or not. Carry on...

 

they have 2 types of variable valve timing, "cam phasing" which toyota uses and "cam changing" like the Vtech
Cam switching[edit]
This method uses two cam profiles, with an actuator to swap between the profiles (usually at a specific engine speed). Cam switching can also provide variable valve lift and variable duration, however the adjustment is discrete rather than continuous. The first production use of this system was Honda's VTEC system. VTEC changes hydraulic pressure to actuate a pin that locks the high lift, high duration rocker arm to an adjacent low lift, low duration rocker arm(s).

They actually do even have camless engines, but yet to see one for autos

 

There are more than 2 types. Like I said, some can alter lift and timing in a variable way - not just switching cams.

 

ok, 2 types MOSTLY used for road vehicles.