Author Topic: 2015 models, emission upgrades/addons, phase outs, re-tests, nothing??  (Read 909 times)

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Offline aclarke

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Cool stuff.  Looks like temp, MAS or a TPS, and rpm is monitored. Might be a few creative ways to "fool" the processor if the cylinder head temp Sensor plays a significant role in fuel flow. 

Offline 1manband

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yup.

if there is even a whisper that it will go into production, would wait for that.

-joe

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got some other info that i posted somewhere.  gonna go delete the thread if i can.  wtf was i thinking?????
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Offline 1manband

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Future of saw Emissions/Fuel Controls?

Takes between 2 to 3 years from the time a patent application idea is filed to be granted a patent in the USA.
However, not all patents granted are actually used in future production.  Using this timetable, the following
could be a hint of what is coming down the pike.


2014 patent applications (+/- 2017 production?):

Echo (Yamabiko):  Electric (solenoid) controlled main jet passage.
Stihl:  Multi-ECU controlled carb/ignition engine management.
Split intake tract.
Tamper-proof deeply recessed mix-adjusting needle design.
Husqvarna: Exhaust Lamda sensor.  (O2 sensor).


2013 patent applications (+/- 2016 production?):

Husqvarna:  Method of adding extra fuel (carburetor), for engine start-up.
Stihl:  Crankcase Lamda sensor.  (O2 sensor).
Device to permit optimum ignition timing in partial load (mid throttle) positions.
Fuel pressure regulator for fuel injected application.
Multi sensor ignition coil high voltage control.
Dolmar:  Combustion chamber, Lamda sensor.  (O2 sensor).


2012 patent applications (+/- 2015 production?):

Husqvarna:  Direct injection system.
Inlet tract improvement device to prevent backflow from crankcase into inlet tract.
Stihl:  Piston recess connectect to intake tract for intake fuel mix control.
Device for alternating ignition angle before tdc used for RPM control.


2011 patent applications (+/- 2014 production?):

Stihl:  Low pressure fuel injection control method/device.


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Note:  This list does not include patent information from Zama and Walbro.








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Offline 1manband

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......erased it fom there.

................don't sell anything, so no need to post any info that just a few folks would get over there.
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Offline Nathaniel Vansickle

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I love the idea of all this tech making its way into saws but the reality of it all is that it is going to complicate diagnoses and add a lot of cost to repairing saws. pushing us eventually more and more towards the throw away society
5105H and 6400H in stock

Performance Outdoor Equipment
performanceoutdoorequipment.com
Dolmar, Echo, Jonsered


Offline 1manband

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I love the idea of all this tech making its way into saws but the reality of it all is that it is going to complicate diagnoses and add a lot of cost to repairing saws. pushing us eventually more and more towards the throw away society

agree.  those who work on more than one brand will have to get brand specific software/hardware?  until, or if, the manufacturers agree on a common connector for diagnostics.

this kind of thing eradicated some generations long auto service stations in my area.  maybe this would help dealers buisness by folks who have out of warranty equipment?  what husq is doing, by not letting the consumer update software is to support its dealers.  can respect that, but leaves everyone else hanging.

consumers too?  imo, at first the consumer will be ok, when the warranty is still in effect.  then SOL, unless they buy a "code reader", software/hardware connector. 

could be the writing is already on the wall.

not every issue can be diagnosed with software.  but if it's an fuel issue, and you cannot read future o2 sensors or fault codes, it would make diagnosis more difficult.

-joe

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Offline 1manband

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Cool stuff.  Looks like temp, MAS or a TPS, and rpm is monitored. Might be a few creative ways to "fool" the processor if the cylinder head temp Sensor plays a significant role in fuel flow.

if it turns out to be a CHTsensor, possibly an insulating washer under the plug??
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Offline aclarke

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Be interesting to see where this goes. If the accompanying diagnostic tool can pinpoint the sensor/module issue I don't think repair aspect issue will be so bad. Might be costly until they become mainstream

Offline aclarke

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Looks like a washer under the plug in the patent drawing.  Seems a little funky and slow reading?

Offline 1manband

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Looks like a washer under the plug in the patent drawing.  Seems a little funky and slow reading?

if CHT was reading high, an insulating washer (under the CHT) washer as i suggested would make things worse!!
high CHT indeed needs more fuel.
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