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ECO button

37K views 20 replies 14 participants last post by  chumbawumba  
#1 ·
Out of curiosity, exactly what does the ECO button do?

Does it just disable my supercharger or does it do other clever stuff so I can get fantastic fuel consumption?

As a general observation, I find the instrument display displays too much information.

What is the point of pressing the button on the left of the instrument panel and then constantly staring at the screen to make my driving as eco friendly as possible? A complete waste of space. Meanwhile the clock is too small. Nissan need to redesign the information on the display
 
#2 ·
As I understand it, it simply "dampens" the throttle response.

I have a non supercharged model, and it has an eco button, so it's certainly not just a "disable the supercharger" button.

I tend to switch off the foot pedal display on the dash as it's no more than a gimmick; however I choose to drive, showing me how far I push the throttle on a fancy graphic is irrelevent; I'll push it as far as necessary and no more.

I also fail to see the point of the economy score given at the end of a run. I'm convinced it just shows a 3 no matter how I drive!

Having said this though, I do think there is a slight difference in response when the eco button is "on", and for my usual relaxed driving style, I tend to leave it on.
 
#16 ·
Hey, I know this post is really old but I noticed you mentioned something about a foot pedal display.

hey, I know this post is really old but I noticed you mentioned “switch of foot pedal display” I assume your referring to the marked area in the image. Whilst I’ve been driving recently ive noticed that option has disappeared but I can’t figure out why 😅 is there a way to turn it off and on ? Thanks
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#4 ·
When I drove an E12 diesel, I pushed the "ECO" button, you can push the ECO button where the sun don't shine, the engine wouldn't pull the skin off rice pudding, that soon got switched off, never to use again. It's just a gimmick, if the Note had an engine with better BHP in the first place, might be worth using?Other Manufacturers have a system that if your not pushing the engine, it will knock out two of the cylinders (4 cylinder engine)until you put your foot down, then all four will kick in. Mind you, can you imagine the Note engine no matter if it's petrol or diesel running on two cylinders
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#5 ·
Agreed, there is a big difference between eco on/of on my supercharged version too. However I do tend to leave it on when just drivng around town as I'm not bothered about performance then. My dealer suggested that was the way to do it.

On the open road I don't use it as I want to be able to use all the acceleration available if required.

Started to do a petrol mpg log so will see how it goes.

It would be fascinating to know exactly what's going on though. Anyone on this forum work for Nissan?
 
#6 ·
the eco button just switches the engine map in the ecu to one with less torque and power 1.5 dci - it cuts the turbo boost pressure and fueling<div abp="1393">
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1.2 dig-s is a bit more complex as its 3 pot an runs a miller cycle to reduce the compression, the supercharger has a electronic controlled clutchwhat means the boost is controlled by the ecu - the Nismo 1.2 dig-s has 30 bhp more than standardjust by changing the ecu map
 
#9 ·
If I am reading the manual correctly the ECO button on the non-supercharged 1.2 80HP engine just puts a pretty green light on under the pretty blue 'neon' light at the top of the instrument panel. This is obviously to distract you from any external hazards and essentially its the same concept as the peril sensitive sunglasses invented by Douglas Adams. I think I'll be leaving mine off and trying to concentrate on the road!
 
#10 ·
Don’t actually know what the ECO button does, in a tekky sense, but I felt the effect when starting from rest (in ECO mode), got up to about 20 mph, and cancelled ECO while still accelerating.

The car seemed to "change down a gear", even though it’s the 1.2 supercharged engine with CVT gearbox, and noticeably increased the rate of acceleration.
 
#11 ·
If you scroll up "Flash22" explains what the ECO button does. And as for people saying super charger, it a turbo, a super charger is a different thing altogether, for putting more air into the cylinders for more power
The turbo is driven by the exhaust gasses, a proper super charger is driven by a drive belt off the engine, It delivers power right from the start, not like a turbo that has to spool up to give the extra power.
A turbo requires oil to keep the bearings from seizing up due to the heat from the engine, so subsequently it degrades the oil as the lower grades in the oil burn up, where as a super charger doesn't get really hot.


In another forum I'm in there are guys who have the 2018 Polo GTI knocking out just under 200 BHP with the 2 Ltr petrol engine. In that car they have an ECO button, and you wouldn't believe the amount using the ECO button to get more MPG, why buy a bloody 2 Ltr GTI and use the ECO button, it defeats the object of having a fast car in the first place???
 
#13 ·
If you scroll up "Flash22" explains what the ECO button does. And as for people saying super charger, it a turbo, a super charger is a different thing altogether, for putting more air into the cylinders for more power
The turbo is driven by the exhaust gasses, a proper super charger is driven by a drive belt off the engine, It delivers power right from the start, not like a turbo that has to spool up to give the extra power.
I may have the wrong end of the stick here, (apologies if I am!) but are you saying the E12 1.2 ltr supercharged engine is turbocharged not supercharged? If so, won’t Nissan be facing a lot of misrepresentation claims, as it was certainly described to me as having a supercharger.
 
#14 ·
Please accept my apologies, It does have a super charger. Problem is, they don't make the E12 any more.


The Miller Cycle, patented by American engineer Ralph Miller in the late 1950s, introduces a two-stage intake stroke (thus producing, in effect, a fifth stroke) by keeping the intake valve open for longer than in a conventional engine. Coupled with a higher compression ratio and with the supercharger boosting output at low engine speeds, the result is a more complete combustion phase.
Further enhancing efficiency, the supercharger has an electronic clutch which allows it to be disconnected from the engine when not required further reducing power losses through friction.” – – Nissan
 
#15 ·
Just reading my last post where it quotes "the supercharger has an electronic clutch which allows it to be disconnected from the engine when not required further reducing power losses through friction.” – – Nissan


If that's so at what point does the brain of the engine decide when to engage the clutch of the supercharger? In that way it's taking away the advantage of a supercharger (power straight away, no turbo lag), you'll have to wait for the supercharger to kick in, no different to having a turbo, you'll get lag between putting your foot down and waiting for the clutch to kick in.
But I wish you all well, in 3 years time Haynes will bring out a workshop manual for the E12.
 
#18 ·
Late to this party.... but others may still come behind me :) . I have now placed three full tanks in my 10,000 mile 2015 Nissan Note 1.2 DIG-S petrol.two with eco button turned on and one with it turned off, both returned 40mpg around town with the odd longer run at around 65mph (as measured full to full).
My wife and I have agreed that the eco off it is a much better car to drive with noticably more power, we live in a very hilly part of the UK. Soon we will be making a much longer journey and I will watch with interest what the outcome is. I also recognise that my wife and I drive differently, so I would like to see the impact of a single (me!) drives a tank full.