How It Works: 2016 Toyota Tacoma's 'Atkinson' Cycle

While there is nothing wrong with implementing new designs, change for the sake of change seems to be what manufacturers shoot for these days. The article says "improved efficiency without resorting to turbocharging or diesel fuel". Whats wrong with either of those? Both are much more proven than the Atkinson cycle, both are more suited to a truck, and I'd venture a guess that done correctly, either would be cheaper and more efficient.

Diesel is what America needs to embrace. Remove the silly taxes and such on it (it should ALWAYS be cheaper than regular gasoline), prove to the naysayers that diesels aren't the rattling, stinking junks they remember, and introduce them to economy AND torque in the same package.

Ford missed the opportunity by chasing the Ecoboost idea, now Toyota seems to be doing the same. Chevy and Dodge are the only two selling light duty diesel pickups. What a shame.

If the 3rd Gen Tacoma had been a no frills truck with a small (2-2.4 liters) L4 diesel, I'd be all over it, along with MANY others.

 

You're late to the party. Please keep all diesel discussions in THIS thread.
http://www.tacomaworld.com/forum/3r...o-turbo-diesel-polite-conversations-only.html

Thank you for your support.

 

Sorry guys, wasn't aware there was a specific place to point that out. Also, definitely wasn't starting an anti 3rd Gen rant or anything, more of just a rant against the American market in general.

 

The guy writing the cars.com article is confused when he states that the power stroke is shortened. He states correctly that the compression stroke is shortened (his numbers) to an effective 8 to one and the power stroke remains 13 to one. Maybe the power stroke numbers would be better stated as expanding 1 volume to 13 volumes.

In the video the guy talks about the fuel air mixture being pushed back into intake to be used by another cylinder. This does not have to happen with direct injection. Fuel in direct injection is added near TDC so no fuel is forced back into the intake tract, only air.

I thought it was already disclosed the the new tacoma 3.5 would run both Atkinson and Otto cycles as needed to produce the desired power/economy values.

 

I heard "blah, blah, Atkinson cycle, blah, blah WORKS BETTER WITH A SUPERCHARGER."

Was it just me?

 

One can only hope, but if they did have a supercharger, I'm sure they'd advertise the heck out of it

 

There'd be a scoop. No scoop, no supercharger.

 

Huh? Scoop now does nothing in regards to room or function?

 

Yep, for me I'm definitely going to have to wait and see about this "new" engine. From what is being said I don't think this engine is amied at trucks, it's a smoke and mirrors trick to think lower displacement w no power adder, super charger, turbo, is going to make even the same power. I don't rap my engine out to red line except when I'm dinging around. So no low end no go.

 

Screw the Atkinson/Otto cycle silliness, the big news in this article is that these things have a new rear differential. If it's actually built stronger and the axle is a direct swap into

$90 2005-2015 Toyota Tacoma With 4L Right Petrol intake air snorkel kit high performance system compatible kit Replacement black Rotational Molding (2005-2015)

2005-2015 models, that actually leads to some intriguing junkyard possibilities. Unfortunately, I fear it'll just be a gear ratio change to go with the new tranny...

 

Exactly, the diesels are not stinking junks they use to be because of the goverment and that same govt that also hinders the diesel as well with all those restrictions

 

Seeings how the 3.5 existing makes 90% of peak torque at 2000 RPM, not sure how you figured that out.

 

Wow..... this statements says a lot about this poster knowledge of the engine The current 2GR-FSE already makes 90% torque at 2k rpm all the way to redline. Looks like plenty of torque to me. On page 12.

 

He doesn't. He just assume a smaller engine is weaker thus less torque

 

Then it would be a Millers Cycle engine, the type Mazda used years ago in some of the Millenias and even Subaru has used them.

 

The 2GR-FSE in the Mark X is rated at 318 PS (234 kW; 314 hp) and 38.7 kg·m (380 N·m; 280 lb·ft) at 4,800 RPM and with the Supercharger (265 KW, 355 hp). That was from "Mark X +M Supercharger specs" (in Japanese). 2009. Retrieved 2010-03-13.

I have the supercharged 4.0 and its a hoot but a thirst hoot.

 

Doesn't it have a new ABS system too? Pretty sure I saw that somewhere.

 

That's right it does, I think it was mentioned in that first Q&A session.

And you know of course this new ABS system is really just about cost saving and is actually worse than the old ABS system. Toyota just continues to drop the ball and fails to innovate. We deserve more from them. In snow and ice the old ABS system will kick in and cause you to not slow down at all even though if you locked the wheels you would have had more stopping traction without ABS. The new ABS system goes one better and uses that traction the current ABS haters know is there to instead accelerate the truck into trees and parked vehicles at even higher rates of speed.