Author Topic: Stihl ms280  (Read 1246 times)

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Offline man of stihl

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Re: Stihl ms280
« Reply #10 on: February 24, 2015, 07:44:48 pm »
Jim. Can you resend? That was my wife's email. I changed it to mine. Thanks.


Ron

Offline 660magnum

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Re: Stihl ms280
« Reply #11 on: February 24, 2015, 08:30:37 pm »
Look now?
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline man of stihl

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Re: Stihl ms280
« Reply #12 on: February 25, 2015, 05:36:50 am »
Thank you
Ron

Offline JohnG28

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Re: Stihl ms280
« Reply #13 on: February 26, 2015, 10:02:15 pm »
Did those saws come with IEM or something to that effect? For some reason I seem to remember it being advertised with some sort of electronic engine management, not just the intellicarb. Is that what you mean by first saw with this or just the intellicarb? Thanks.

Offline man of stihl

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Re: Stihl ms280
« Reply #14 on: February 27, 2015, 05:06:25 am »
Did those saws come with IEM or something to that effect? For some reason I seem to remember it being advertised with some sort of electronic engine management, not just the intellicarb. Is that what you mean by first saw with this or just the intellicarb? Thanks.
I'm not sure about the IEM. I'm talking about the intellicarb.
Ron

Offline man of stihl

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Re: Stihl ms280
« Reply #15 on: March 07, 2015, 07:15:11 am »
12lbs 2oz empty.
Ron

Offline Cut4fun .

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Re: Stihl ms280
« Reply #16 on: March 07, 2015, 12:36:14 pm »
 I remember it but had to look it up to refresh my slow brain.

 Intelligent Engine Management

The new STIHL MS 280 is the world's first chainsaw with intelligent engine management ...

It's remarkably clever: STIHL presents the world's first chainsaw models with intelligent engine management . An innovative regulating system controls the full-load mix and top speed of the machines electronically. That way, the chainsaw always delivers optimum engine power as well as offering even greater convenience and environmental friendliness. STIHL sets new standards with this pioneering chainsaw design concept. STIHL chainsaws with intelligent engine management are indicated by the letter "I" in the model name.
Clear advantages

    Optimum engine performance at all times: An innovative regulating system automatically controls the full-load mix and top speed of the machine.
    Good lugging power: The machines always reach a constant maximum speed and are characterised by their outstandingly good acceleration.
    The correct carburetor setting, automatically: No need for manual adjustments in changing temperatures or when working under different conditions, such as at high altitude or with a dirty air filter.
    Efficient and environmentally friendly: Because the fuel-air mix always remains within the optimum range, the engine uses less fuel and produces lower exhaust emissions.

This is how it works

The regulating cycle starts if the chainsaw is operated for 5 seconds under constant full throttle. The solenoid valve closes for a fraction of a second. The resulting speed change is electronically measured and analysed. According to the result the fuel-air mix is readjusted to keep it always within the optimum range. In full-throttle mode the mix ratio is automatically regulated every 5 seconds.
Solenoid valve

Solenoid valve in the carburetor
The digitally controlled solenoid valve opens and closes 30 times per second. That way, the fuel supply is precision-controlled.
Microprocessor

Microprocessor in the ignition module
The microprocessor monitors the engine speed and controls the solenoid valve.
Flywheel
Flywheel

A second pair of poles on the flywheel provides the necessary power supply for the microprocessor and the solenoid valve.

Constant top speed
Intelligent engine management is active even during uncontrolled rich come-down at full throttle. If the engine speed exceeds the upper limit of 14,000 rpm the mix is enriched to bring the speed back down to 14,000 rpm. This ensures a constant maximum speed.

    http://www.stihl.co.uk/intelligent-engine-management.aspx

Offline JohnG28

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Re: Stihl ms280
« Reply #17 on: March 13, 2015, 09:34:25 am »
Thanks Kevin,  glad my memory isn't failing me completely yet!  :D

Offline man of stihl

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Re: Stihl ms280
« Reply #18 on: March 14, 2015, 07:29:39 pm »
I see why the top end is smoked.
Ron

Offline man of stihl

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Re: Stihl ms280
« Reply #19 on: March 14, 2015, 07:30:17 pm »
.
Ron

 

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