Jump to content

We need to take Climate Change seriously


Dibya

Recommended Posts


On 5/22/2021 at 11:31 AM, UCyborg said:

2001 Volkswagen Polo with 1.0 petrol engine.

On 5/22/2021 at 11:31 AM, UCyborg said:

Mine is about 6.3 liters

I eventually picked up the habit of cruising at 110 km/h rather than 130 km/h on the motorway and that reduced the fuel consumption to little over 5.7 l/100km on that model.

That 4.5 l/100km figure is on the current 2022 model, after recently experimenting with cruising in 90 - 100 km/h range. Slower indeed gets you further.

Some time ago I stumbled upon this comment on YouTube, forgot which video:

Quote

A much better idea that has been proven to work (about 10% better gas mileage) in a regular gasoline engine car, is to accelerate briskly and then coast for a reasonable amount of time and repeat (if traffic allows). This is especially beneficial in low traffic conditions. Ok now for the details... Suppose the speed limit on a road is 50 MPH and you are at a red light with light traffic, instead of accelerating gently, which many people tend to think if fuel efficient (but really it is not), accelerate briskly and even 5 MPH over the speed limit (cuz it will only be briefly), then let the car coast down to 5 MPH under the speed limit and repeat (provided conditions allow). So basically you will be "bouncing" between 45 MPH and 55 MPH in this example. That is about 10% more fuel efficient to do that (especially is low traffic conditions) than if you went a constant 50 MPH. Since u r a mechanic, you probably already know what I am about to say next but I will mention here for your other readers... a typical gasoline internal combustion engine is MOST efficient (power output to fuel consumption ratio) at about 75% of it's maximum output power. For example, a car with 200 peak HP is most efficient when it is outputting about 150 HP. That is one reason why accelerating briskly helps save fuel. The other necessary piece for save fuel is the coastdown. Notice on cars with instantaneous fuel MPG displays that when you get off the throttle completely, the instantaneous MPG goes up to about 99 MPG. So think about it, if you accelerate briskly and get 10 MPG or less but then coast and get 99 MPG, it helps the overall mileage vs. driving at a constant speed. The best way to prove this is try it on a car that shows average MPG. Drive the same path using both techniques, the "standard" technique and the fuel efficient technique described here. You should see about a 10% improvement. Make the path more than about 5 miles otherwise it might not be enough to get an accurate reading.

That, I haven't experimented with. Those that encounter me on the road must already think I'm insane as it is. But, I get to listen to the music longer!

Link to comment
Share on other sites

  • 4 weeks later...

Something I've been wondering about, this car has EFB+ battery installed. There's not much written about the plus part, seems to be a Volkswagen thing, they only have written on one of their sites that it has surface-active carbon additives for more effective power consumption and charging capacity. But carbon additives are mentioned at other places for EFB (without plus)...

The main part, the car keeps the battery charged at 80% max, supposedly to save fuel and reduce emissions, something about alternator not being run all the time by the usual means, but engaging when using engine for braking and using kinetic energy to run the alternator. I've noticed with the help of diagnostic interface that when the car is sitting for a day, battery discharges from 80% to 72%. That's a whooping 8%! The manual does mention something about shutting electronics down if it goes too low, but nothing specific, just that it can't prevent battery from going empty if you do something stupid like leaving the ignition on with the engine off.

So about EFB's longevity, while it's designed to operate better at reduced state of charge, I wonder if it would still be beneficial long-term to charge it every once in a while, given that the car is mostly sitting in garage for weekends and a week at a time few times per year.

Edit: Higher state-of-charge should still be the better state to be in.

https://microtexindia.com/efb-battery/

Edited by UCyborg
Link to comment
Share on other sites

  • 2 weeks later...
  • 1 month later...
  • 6 months later...

If you ask me, it's all in the hands of the few very rich individuals owning large corporations, private jets, yachts, whatever. You holding onto that ancient Windows XP computer? Please...

Get this, our so called president preaches to us common folks that we should get by with less while she herself is using a private yet. I won't go out of the way to save the environment, but I won't feel guilty buying something new every once in a while either.

Link to comment
Share on other sites

51 minutes ago, UCyborg said:

few very rich

The very rich are very few; the hoi polloi are ~8 billion. 

 

54 minutes ago, UCyborg said:

holding onto that ancient Windows XP computer [,,,] us common folks

Common folks who run Windows run Windows 10. Less than half a percent of Windows users run XP, and [just guessing here] a much smaller fraction still does it out of necessity. 

Screenshot_6.png

Link to comment
Share on other sites

1 hour ago, UCyborg said:

...You holding onto that ancient Windows XP computer? Please...

Yeah, I haven't figured out what I'm gonna do once my (ancient and failing) machines crap out but the association (I'm a client) with likely set me up with a laptop with Linux. Ugh .. I just really like XP

Edited by XPerceniol
Link to comment
Share on other sites

Surprised my current PC still works, the ones that were at the house in late nineties and early 2000s were nothing like it quality wise. I'm only looking at one bad data disk, bought in 2010. It's not too urgent as I have two other external disks.

Even got 2 extra GB of RAM this year for the PC, but only because I found the stick at some company that takes used hardware and sells it. Generally really not comfortable with the idea of buying used stuff from random people online...

Edited by UCyborg
Link to comment
Share on other sites

2 hours ago, UCyborg said:

Corporations don't really care about saving the planet, it's all about the money, always been, so it's no surprise. Maybe Linux Distros will grow in popularity again?

Link to comment
Share on other sites

Those laughable "Multiple key barriers" looks more like a requirement from 2007 to run  Windows Vista.

That's exactly what I bought in 2007, so nothing outrageous to ask for at the end of 2025!

Link to comment
Share on other sites

1-  64-bit processor - so? Are there non 64 even left?

2- 4 GB of RAM - so? - is this a joke?  

3 - a minimum of 64GB storage - is this a joke?  My 2003 laptop had  a 120GB Fujitsu HDD (over two decades ago!)

4 -  UEFI is about fifteen years around us. 

Goodbye BIOS, hello UEFI

https://www.computerworld.com/article/2826910/goodbye-bios--hello-uefi.html

5 - DirectX 12-compatible GPU, doesn't mean Feature 12_0, you can still use ancient crap with DX10/11.

 
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...