Are eco engines/driving less eco than normal engines/driving
Discussion
Seeing so many threads about euro 4 and 5 emission controls, are manufacturers now trying too hard to be eco? Is it pointless trying to save a few grams of co2 when it costs a new engine prematurely? Same goes for eco driving. Does changing up super early pay off? Do stop start systems kill engines? Howabout egr? Longterm, are we trying too hard?
HertsBiker said:
Seeing so many threads about euro 4 and 5 emission controls, are manufacturers now trying too hard to be eco? Is it pointless trying to save a few grams of co2 when it costs a new engine prematurely? Same goes for eco driving. Does changing up super early pay off? Do stop start systems kill engines? Howabout egr? Longterm, are we trying too hard?
They have to. Yes. Sometimes. Not sure. Probably. We won't know for a while.Longevity is a bit of a concern, but more because of the additional systems themselves failing (DPF, EGR etc) than them causing any real premature damage. Obviously I suppose this would include a turbo if an NA engine had been downsized and turbocharged..
Driving style has a huge impact on fuel consumption. This is why the spate of downsized forced-induction cars - see Fiat TwinAir, Ford Ecoboost - get very good results in the EU tests, but are s
te in real world conditions.
Thankfully, the drive cycle is changing in a couple of years and will become considerably more representative of real driving. This will go some way to making all the optimisation manufacturers currently do to get good test figures actually help customers use less fuel!
Driving style has a huge impact on fuel consumption. This is why the spate of downsized forced-induction cars - see Fiat TwinAir, Ford Ecoboost - get very good results in the EU tests, but are s
te in real world conditions.Thankfully, the drive cycle is changing in a couple of years and will become considerably more representative of real driving. This will go some way to making all the optimisation manufacturers currently do to get good test figures actually help customers use less fuel!
McSam said:
Thankfully, the drive cycle is changing in a couple of years and will become considerably more representative of real driving. This will go some way to making all the optimisation manufacturers currently do to get good test figures actually help customers use less fuel!
It is changing, and might be slightly more representative, but I can't actually see it being much better than at present. All they are doing is upping the speeds and using a slightly quicker 0-50kph time. The test will still be in a lab and still at a ridiculously high ambient temperature and will still be done after a prolonged soak time, and the duration of the test won't change much, if at all - so still not representative of a cold Thursday morning in mid January in the Yorkshire Dales The other big downside I can see to the revised test is increased CO2 figures - yes they might be more realistic, but can you really see the Goverment revising the RFL bands? So the net result, higher RFL pricing for all, and higher BIK for CC drivers.
HertsBiker said:
Seeing so many threads about euro 4 and 5 emission controls, are manufacturers now trying too hard to be eco? Is it pointless trying to save a few grams of co2 when it costs a new engine prematurely? Same goes for eco driving. Does changing up super early pay off? Do stop start systems kill engines? Howabout egr? Longterm, are we trying too hard?
Stuff like DPF and EGR's are nothing to do with CO2, they are cleaning up the particulate matter in the exhaust gases. They are nasty little particles that cause respiratory disease. I'm not sure if CO2 is regulated in the Euro 4,5/Tier 4,5 etc emissions regs or it is just manufacturers chasing sales with lower CO2 output going into lower tax brackets.As someone that breathes air, any control on the rubbish that can be emitted into the atmosphere is a good thing in my book. People that remove the smog controls are effectively fly tipping their emissions.
i was driving a 2011 SEAT last week and it had a gearchange indicator.
It was telling me to change up at 1400rpm meaning i was doing 42mph in 6th at approx 1100rpm. The car was trying to shake itself to bits. It did not sound happy at that speed/rpm.
But hey as long as it gets good mpg and co2 ratings thats all that matters, eh?
It was telling me to change up at 1400rpm meaning i was doing 42mph in 6th at approx 1100rpm. The car was trying to shake itself to bits. It did not sound happy at that speed/rpm.
But hey as long as it gets good mpg and co2 ratings thats all that matters, eh?
Willy Nilly said:
Stuff like DPF and EGR's are nothing to do with CO2, they are cleaning up the particulate matter in the exhaust gases. They are nasty little particles that cause respiratory disease. I'm not sure if CO2 is regulated in the Euro 4,5/Tier 4,5 etc emissions regs or it is just manufacturers chasing sales with lower CO2 output going into lower tax brackets.
As someone that breathes air, any control on the rubbish that can be emitted into the atmosphere is a good thing in my book. People that remove the smog controls are effectively fly tipping their emissions.
As someone that breathes air, any control on the rubbish that can be emitted into the atmosphere is a good thing in my book. People that remove the smog controls are effectively fly tipping their emissions.
What gets me is the huge amount of energy required to replace stuff that wears out or break due to eco measures. When I was learning to drive I was taught to keep the revs up so the engine was responsive. Now we keep them down and labour the engine to the point where it is strained to breaking. All to save energy. Doesn't make sense, or does it?
HertsBiker said:
What gets me is the huge amount of energy required to replace stuff that wears out or break due to eco measures. When I was learning to drive I was taught to keep the revs up so the engine was responsive. Now we keep them down and labour the engine to the point where it is strained to breaking. All to save energy. Doesn't make sense, or does it?
Low revs/labouring modern diesels = lots of new DMFs required + lots of new EGRs required from coking up + lots of DPF problems = mega mega bucks.Gassing Station | General Gassing | Top of Page | What's New | My Stuff