Husqvarna X-torq two stroke engine! 4 stroke killer??? yes!

[2smoker]

I know that KTM own Husky but I don't know about the chainsaw division... Look at the second video..no smoke at all...Really nice.. Yeah it is a chainsaw.. but the concept will probably give a 2 stroke rider a bit more torque/traction which is good.. The emissions is a lot reduced.. We are getting there!! 

NOW DEVELOPED BY HUSQVARNA WE HAVE 'X' TORQ.

'X' torq is a 2 stroke engine concept which gives you a 20% improvement in fuel consumptions, plus a 60% reduction in exhaust emissions.


Engine power can be measured in two ways. Brake horse power (B.H.P.). This is measured at the engines highest speed. Torq is measured at the engines speed where it has the greatest push.

Putting it simply, horse power is a 'punch' and torque is a 'push'.

Now to give a basic explanation of 'X'torq.
A disadvantage of 2 strokes is that the incoming fuel air mixture gets mixed up with the outgoing exhaust gasses. Fuel air mix can end up in the exhaust and wasted exhaust gasses can also be forced back into the engine cylinder, diluting the fuel air mix (caused by the exhaust pulse).

4 strokes don't have this problem as they waste (half) an engine revolution just to push out the exhaust gasses.

'X' torq engines have a porting system that during every engine revolution a shot of clean, cold oxygen rich air is introduced to the cylinder. This acts as a buffer between the incoming fuel air mixture and the outgoing exhaust gasses.

This separates the inlet gasses from the exhaust gasses. This with the 'super scavenging' front positioned ports gives probably the most efficient small 2 stroke so far made.

At full speed B.H.P. is the same. At lower speed the X torq motor out pulls a conventional 2 stroke.

The X torq concept has been used successfully for a few years now on certain Husqvarna machines, 335RX, 455 and 576XP.

The 576XP is a machine that in use can perform along with some 90cc saws. As the saw is reasonably compact and can be used for heavy, limbing with a short bar, then because of it's high torque motor is used also for felling with a long bar.

One saw for 2 jobs. A 30% saving in fuel consumption, a lot less to carry into the forest.

The now tried and tested X torq engines have now been introduced across a range of Husqvarna saws. 235, 235e, 240e, 435, 435e, 440e, 450e, 460e, 355RX and 576XP..


http://www.husqvarna.com/us/forest/products/xp-saws/husqvarna-chainsaws-xp-saws/

Strato Animation 460 XTORQ

husqvarna 576xp compression - decompression

[meger z]

Are the chain saws owned by husky / BMW? if so we should be asking for the tec to be put on to the mx range.

[admiral]

Are the chain saws owned by husky / BMW?

no.

[Chris2T]

ok it's a little tough for me to grasp and i watched the video in slow-mo about 10 times, but am i understanding this correctly that:
the additional air that is pumped into the top end of the transfer port acts as a clearing/evacuating agent for the spent gases residing in the combustion chamber, thereby not using the fuel/air mixture to do the clearing, hence no unburned fuel/air mixture exits the combustion chamber? If so, this is PURE GENIUS!!! i mean this retains ALL of the two stroke's simplicity and light weight, and apparently adds torque. and i noticed little to no smoke exiting that chainsaw. Emissions could be tweaked by the air transfer/timing groove in the piston!

The only thing we have to worry about now is that whoever patented this doesn't make the licensing rights cost out of this world 

[2smoker]

ok it's a little tough for me to grasp and i watched the video in slow-mo about 10 times, but am i understanding this correctly that:
the additional air that is pumped into the top end of the transfer port acts as a clearing/evacuating agent for the spent gases residing in the combustion chamber, thereby not using the fuel/air mixture to do the clearing, hence no unburned fuel/air mixture exits the combustion chamber? If so, this is PURE GENIUS!!! i mean this retains ALL of the two stroke's simplicity and light weight, and apparently adds torque. and i noticed little to no smoke exiting that chainsaw. Emissions could be tweaked by the air transfer/timing groove in the piston!

The only thing we have to worry about now is that whoever patented this doesn't make the licensing rights cost out of this world  

Somebody just woke up! add powervalve (we need that) and a EFI-DI system..This would be the cleanest engine around  with some added torque on top of it. The concept is so bad -ass! They are using a simple carb and ther results are just plain amazing!

[JohnN]

Finally got a moment to watch both of these videos and I'm blown away!!! As Chris2T has already stated this is pure genius!!

When you watch, it's so simple that it kind of makes you wonder why no one had done it before.

Then when you see it in action, there is virtually no smoke! Just that one point alone can change many people's perceptions of the two-stroke. If I used a chain saw more than one or twice a year I'd buy one of these right away.

Husqvarna is thinking outside the box with this one.

[2smoker]

Don't forget the added torque at low speed...    

[JohnN]

Come on, be honest... besides the Open bikes, who really rides two-strokes at low speed??? 

[2smoker]

Come on, be honest... besides the Open bikes, who really rides two-strokes at low speed??? 

ahhaahah good one! Can be useful in tight stuff like arenacross and enduro! Viva 2 stroke!

[TotalNZ]

I don't understand the point of the second video. A well tuned saw with the right oil doesn't smoke anyway. I work as a production tree faller and i run a stihl over a husky any day, in my opinion the STIHL with conventional 2t smokes the Husky. Not saying that it's not a brilliant idea but Husqvarna chainsaw's aren't anything special.
Love to see that idea developed further though.

[JETZcorp]

My favorite chainsaw is still the Maico 460.

http://www.flickr.com/photos/hugo90/3911623150/#secret079108e62a-w500-h375

[JohnN]

Those big bore chain saw dudes are freaking nuts!!

[ford832]

I don't understand the point of the second video. A well tuned saw with the right oil doesn't smoke anyway. I work as a production tree faller and i run a stihl over a husky any day, in my opinion the STIHL with conventional 2t smokes the Husky. Not saying that it's not a brilliant idea but Husqvarna chainsaw's aren't anything special.
Love to see that idea developed further though.

A Stihl?Pbbfffttt,just goes to show what you know? .I used to have one but my hands have circulation issues these days and the Husky has a beter antivibe.As for how Husky compares quality wise to Stihl...
.Now then,Husky motorcycles are owned by BMW,who bought them from Cagiva,who bought the MC division form Husky.Husqvarna,Jonsered,Poulan chainsaws are owned by electrolux.As for Xtorq,it's nothing that earth shattering,it's been out for a number of years now.The biggest reason for the low smoke is the catalytic exhaust-which mine had before it became-er-modified.It now smokes a very little bit,runs properly,and doesn't run hot enough to melt the plastic anymore.

[TotalNZ]

I don't understand the point of the second video. A well tuned saw with the right oil doesn't smoke anyway. I work as a production tree faller and i run a stihl over a husky any day, in my opinion the STIHL with conventional 2t smokes the Husky. Not saying that it's not a brilliant idea but Husqvarna chainsaw's aren't anything special.
Love to see that idea developed further though.

A Stihl?Pbbfffttt,just goes to show what you know? .I used to have one but my hands have circulation issues these days and the Husky has a beter antivibe.As for how Husky compares quality wise to Stihl...
.Now then,Husky motorcycles are owned by BMW,who bought them from Cagiva,who bought the MC division form Husky.Husqvarna,Jonsered,Poulan chainsaws are owned by electrolux.As for Xtorq,it's nothing that earth shattering,it's been out for a number of years now.The biggest reason for the low smoke is the catalytic exhaust-which mine had before it became-er-modified.It now smokes a very little bit,runs properly,and doesn't run hot enough to melt the plastic anymore.

HA ha , i was wondering how long it would take for someone to reply to that. there's a pretty strong rivalry between husky and stihl guys, all i know is that i use a saw for a living and i prefer stihl. Excessive vibration hasn't been an issue on any new saw for years now.

[meger z]

stihl do a power vale that cut down emissions in their saws,info please