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back to article Peugeot 3008 HYbrid4

Reg Hardware Car Week Car company PRs are always a chirpy bunch, but with a practised eye you can tell when they think they are really on to something. That's currently the case with the folk from Peugeot, who are like a dog with two tails to wag when talking about the new 3008 HYbrid4, the world’s first diesel electric …

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A diesel hybrid Peugeot? I cannot think of anything I would want to drive less. Walking actually seems preferable.....

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Well at least it would be very economical,

It's so hideous that you want to get near enough to it to actually drive it.

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Re: Well at least it would be very economical,

Oh come on, it's far less ugly than that horrible kick-it-Kuga also on this site.

And both are positively delightful compared to the horror that is the BMW X6 - think coupe shape on a 4x4 chassis - go on Google it, I'll be here waiting…

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JDX
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Struggling to see the point?

Isn't putting power to the wheels from engine -> battery -> motor -> wheels less efficient as it involves more steps? I can see it gives you a KERS style boost but what exactly is the point of that in a big family car?

Real question - genuinely don't understand what this is supposed to achieve. A fully electric car which has a small engine to charge the battery in 'emergency mode' so it doesn't go flat, that seems more useful (if we have to have electric cars in the first place).

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Re: Struggling to see the point?

I think the point is that it supposedly gets around 30 more miles per gallon that standard. Only time will tell if this is correct.

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Re: Struggling to see the point?

Because an engine can be set to its most efficient RPM. Perhaps 2000 rpm is peak torque for this engine and runs most efficiently. Keeping the battery around 80% charged at the most efficient fuel setting would mean the least amount of energy wasted. I.e. no "idle" technically as your battery would deplete whilst driving and charge whilst idle/below the charge/usage curve.

Obviously you would need to factor in efficiency but in theory it is a sound system:

1) idle charges battery.

2) set off uses most "fuel" and ratios as its not very mechanically efficient so use the battery.

3) cruise uses engine and charges battery at a more efficient engine setting.

4) regen braking (balance to the rear though?)

5) back to 1

I like this idea. You have the CHOICE to use as a normal FWD diesel if situation permits. If you are pootling around town then use the battery. It would be interesting to see a weeks worth of normal driving miles vs fuel put in vs a "normal" without using the electric mode.

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Re: Struggling to see the point?

There are gains to bad with regen braking - this is one definite and obvious place to gain back some fuel economy, instead of simply wasting it all to friction brakes. Although I admit just tossing out all that weight would save you money and probably help just as much too..

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Pint

Re: Struggling to see the point?

Bad? *be had..

Silly me..

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Re: Struggling to see the point?

I think the downvotes for a sensible question seems harsh, but yes it's a counterintuitively more efficient means of harnessing an internal combustion engine's power. I believe an ICE is limited to about 40% efficiency as a theoretical maximum. In a standard car, it's real world efficiency is around 20%, less in many occasions.

As Danny points out above, you can keep the engine set to its most efficient speed regardless of where the drivetrain is. Think of it as an infinite ratio gearbox. In this case, with a diesel, it would be a particular improvement given a diesel delivers all its power at the top end of each gear.

A similar setup (forget which, but was a series hybrid) was reviewed on Top Gear a couple of weeks ago. James May tried to explain it to that blithering idiot Clarkson who as expected cut him off stating it was boring nonsense..

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TRT
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Headmaster

Re: Struggling to see the point?

Re. setting an engine speed independent of road speed. That would be a drive-chain similar to the one in the Prius (infinitely variable planetary system or the Synergy as they call it). I don't think this one has continuously variable transmission, just the usual stepped kind. When using the engine to turn the alternator, yes, disengage the clutch and run it at its most efficient speed and under Atkinson cycle timings, but when it is driving the wheels using set gear ratios, you can't do that.

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Anonymous Coward

Re: Struggling to see the point?

Yes, it's a lossy process but hybrids benefit in a few ways:

- You have the opportunity to regen, capture and re-use some of the otherwise discarded energy. (The shift to lithium will improve regen)

- You can stop the engine under idle rpm. Normal cars can use DFCO when you don't need the engine and revs are high enough to prevent stalling, but with a hybrid you can cut the engine and use electric for small loads, as that can still be more efficient despite the lossy process. Which, in part leads us to ...

- You can keep the engine running in an efficient rpm band, either using spare power to charge the battery or using assist to supplement it. Using assist a lot is bad, but in average conditions you benefit overall.

- In a full parallel hybrid setup you can modify the engine cycle for efficiency over torque and use the assist to provide the additional torque when you need it. That's of more benefit with petrol hybrids. Again, you don't want to be working the assist a lot, but in many driving conditions you really don't need that much torque.

- You can shift more auxiliary systems to electric: as well as having fully-electric A/C the Gen 3 Prius eliminated all belts.

Fully electrically driven cars will be great, although the relative efficiency depends significantly on the efficiency of the grid (but personally I love the idea of finally not really caring what happens in the Middle East), but the problem with electric drive is that you need a large battery and motor to deliver enough power to drive the car at all normal speeds. Batteries don't just have capacity limits, they have charge and discharge limits, which depends on the chemistry.

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Re: Struggling to see the point?

A bit of a problem with point 1). It has start/stop so there isn't an idle time.

I have an Audi A1 automatic with start/stop and find it can be dangerous. On two occasions I have been waiting at a busy junction and haven't noticed that the engine has stopped. When there was a gap in the traffic I ended up lurching into the on-coming traffic as the engine started.

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Boffin

Re: Re: Struggling to see the point?

The only benefit I can see is it allows Peugeot to claim they make a 4WD without having to go to the expense of having a proper 4WD drivetrain and all its associated weight. Not having to have a propshaft going from the engine bay to the rear wheels also means they don't have an intrusive transmission tunnel in the cabin, meaning they can save a lot of money by using the same floorpan and interior for both FWD and 4WD versions. I expect we will soon see more PSA "offroaders" appearing soon with this hybrid setup, pretending they can compete with proper 4x4s over the fields.

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JDX
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Re: Struggling to see the point?

>>I think the downvotes for a sensible question seems harsh

I can only assume it's the green crowd auto-downvoting any post which raises any questions about their agenda.

Or the forums are just unusually full of tools today :)

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Stop

Re: Struggling to see the point?

They offer a 4 wheel drive mode, but I have yet to see where they market this as a traditional 4x4. The marketing for the non-hybrid version included a 1.6 diesel being used to launch a glider. The vehicle raced across a field, demonstrating the sure footedness of the new traction control system. They do make a 4x4 with Citroen and Mitsubishi. Its called the 4007. This system is just like every other hybrid system with the added bonus that there is improved road handling from creating a part time rear wheel drive system to assist (and at low electric only speeds replace) the front wheel drive diesel system. This car currently makes sense. Shame about cost.

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Re: Struggling to see the point?

As other more knowledgeable folks have pointed out, this gives you a more efficient use of the diesel. Something similar has been used for locomotives since the 1930s.

Which makes me wonder - any chance of a diesel hydraulic car?

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Re: Struggling to see the point?

A battery powered car that can do 80mph on a motorway all day even with a small engine to charge it - is a way off. The battery on this would only provide 1.5HP for an hour.

This is an economical family diesel where you don't need to run the engine in traffic and at low speed around town.

KERS only makes sense if you aren't mostly slowed by wind resistance, as in a car. It does work if you need massive fast braking (as in F1) or you weigh a lot and need massive slow breaking (as in a Truck/bus) and you brake/accelerate a lot.

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@Mike Richards ('western' fan?)

I have driven a petrol hydraulic car It was french (wocab) - either a renault or citroen - made in the 1950s. It had a constant speed engine, a variable stroke hydraulic pump, and variable stroke hydraulic motors in each wheel, Pump and motors had swash plate variable stroke mechanisms, operated by cables from the 'throttle'. and it could (with the crude swash plate limiter unscrewed) go as fast backwards as forwards.

The one I drove also had a 25 litre drum of replacement hydraulic oil and a suitcase full of replacement rubber seals in the boot. It never went a week without popping something and dumping all the oil on the road in milliseconds (that's what pumps do!).

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Re: Struggling to see the point?

http://www.fiskerautomotive.com/en-us/karma/overview

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WTF?

Complicated electrics and French?

A brief trawl of the automotive technical forums will tell you what a great idea that is. Current rate of "Help, electrical problem with ${french_car}" entries is about one post in every four.

Also it's a modern diesel, so there's an electic selection of recipes for expensive disasters built in, regardless of who makes it. Diesel Particulate filter failure, Dual Mass Flywheel failure, variable-vane turbo failure, etc ad nauseum......

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TRT
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Re: Complicated electrics and French?

God yes. The building where I work was a PPI job with a French company. There's been a power cut almost every other weekend for the last two years fixing problems, and in the last 6 years, we've lost 20 working weekdays to dodgy power supply components, all of which were French and needed couriering from overseas.

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Peugeot and Electrics...

Good luck with that.

You know after the 3 year warranty is up it'll go wrong, big style.

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Re: Peugeot and Electrics...

Unless you take the extended warranty, but that won't cover dual mass flywheel clutch (grr) or rear window demister.

I'll wait 3 years to see how this gets on on the road before even thinking of buying into it.

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Unhappy

What took them so long.

Surely this is most obvious combination, I'm surprised its taken till 2012 for a manufacture to actually come up with this solution, I mean even Top Gear had a (VERY CRUDE) concept over 2 years ago!

I wonder how many years it will take before we see a 2 pot diesel hybrid in small cars.

Geez I mean, why shout about something that should have been produced years ago, the pace of innovation in the motor industry is Tortoise like, come on!

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Re: What took them so long.

Feel free to take up a job in Vehicle Development if you feel the pace is a bit slow. There's a little bit more to it than "I've had an idea! Lets launch it"".

Actually thinking about it, considering your idea for a hybrid 2 cylinder diesel supermini, I'd rather you didn't...

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FAIL

Re: Re: What took them so long.

Actually, this looks a lot less impressive a design than the Lexus Hybrid Drive tech that Toyota have been using since 2007. Seeing as Toyota also licence that tech to Peugeot's partner company Nissan, you have to assume this is the bargain-basement offering. It's also looking a poor comparison with the VW Cross Coupe concept - which name would you rather have bolting your electrics together, Peugeot or VW? Richard Hammond (http://www.mirror.co.uk/lifestyle/motoring/peugeot-3008-hybrid4-the-richard-hammond-749021) does point out the electric engine is a Bosch part, so hopefully better than the usual Fwench reliability, but his roadtest is not exactly a ringing endorsement as the hybrid turned in WORSE fuel economy than the normal diesel 3008! By the looks of it, Leona A could join a Vehicle Development department and probably turn out at least a good solution as this!

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Angel

Re: What took them so long.

I realise there is more too it than just 'having an idea' but the technology and 'know how' is already out there, in isn't like I'm trying to invent something new.

Get a 2 cylinder diesel engine, combine with a hybrid battery system, use the batteries to get the car moving and the engine to keep everything charged and motion at higher speeds, so this would give a huge MPG return, yes this is all in theory, but if I (just a girl) can think of it, why isn't someone testing it out? Surely its a no brainer. :)

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Re: What took them so long.

I believe the 2012 Fisker Karma does this, but with a petrol engine. James May did a piece about it on Top Gear a few weeks ago (http://www.bbc.co.uk/iplayer/episode/b01cks3v/Top_Gear_Series_18_Episode_4/).

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Headmaster

Re: What took them so long.

Nissan is partnered with Renault

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Boffin

WORSE fuel economy than the normal diesel 3008

Apparently. driving a hybrid economically is not quite the same as driving a plain diesel economically.

I've read that drivers are not 'getting' it without a bit of education, which is down to the design of the car.

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Facepalm

Re: What took them so long.

I think you're mixing up Peugeot and Renault

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Flame

HYbrid4

And while I'm grumbling... will the idiots who name these things please learn the accepted rules of capitalisation, spacing, and punctuation.

Thank you.

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This post has been deleted by its author

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Metric would be welcomed.

Dear El Reg,

Not everone speaks "Imperial", how about providing the rather more "metric" values of Litres per 100Km. ( There are other people in the world who live outside of the GB and the US )......

I understand that Kamel Hooves per Valley (KH/V) or Mule Paces per Field (MP/F) might also be interesting values but they are a lot less common when speaking about vehicule consumption....

Cheers

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Anonymous Coward

Re: Metric would be welcomed.

Why? UK site, UK measurements. If you want things in metric go read a local review instead.

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Re: Metric would be welcomed.

Agreed, enough of the stupid imperial units - so, how many double-decker-buses-worth of fuel does the tank hold?

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Stop

Re: Metric would be welcomed.

The UK officially went metric what, thirty or forty years ago? I was taught in metric, think in metric and work in metric. Having to convert into that antiquated system is an inconvenience I could live without. It also would get rid of listing cars miles per gallon but charging per litre.

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JDX
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Re: Metric would be welcomed.

The UK may be metric for some things, but if you ever went on a UK road you'll notice roadsigns are in mph only.

mpl rather than mpg would be more useful.

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Maths to the rescue!

Khaptain, one doesn’t need to speak Imperial to receive a translation to SI. Just grab a slide rule and follow this simple formula:

282.48 ÷ miles_per_Imperial_gallon = litres_per_100_km

Please note that we in the States don’t use Imperial measurements either — we continue to use Queen Anne’s wine gallon and King William III’s bushel, in preference to their respective Imperial substitutes.

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Re: Metric would be welcomed.

I would prefer km per litre.

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Citroen DS5 has the same drivetrain

And that launch is imminent. It's my next choice for a company car depending on lease costs and handling (in that order).

;-)

Tim

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Go

Bring it on...

Can't comment on the reliability of French auto electrics becasue to do so would be to tempt fate with respect to my 187,000 mile, 11-year-old Peugeot , which to date has been trouble free in that respect.

However, I drove the 3008 Hybrid4 last summer, and I too was impressed. We were at low speed on a short track, but the switch from electric only to diesel was very smooth indeed. The rep told me that the electric drive will kick in whenever you put your foot down, just for a couple of seconds to mask the turbo-lag.

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TRT
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Alert

Re: Bring it on...

Well, let's put it this way, you'd expect some individual car models to be lemons, but for the French, it's a whole make.

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TRT
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Re: Bring it on...

Citron?

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Devil

Re: Bring it on...

I have a 23 year old Petrol Clio RT which I keep abroad as a spare vehicle. It has had no electrical faults within the 11 years which we have owned it - I cannot testify about before that. Touch wood and do not tempt fate of course :)

It is still running 212k (km) on the clock and probably has around 100 (and 10 years) more before it falls apart. The secret for both Renault and Peugeout is to change the radiator at 150k miles/15 years - otherwise they roast :)

In any case - electrical faults + French cars is a recent malaise from the last 10 or so years after they went electronic mad around 2003-2005.

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Go

Nice idea (shame about the car!)

Until we have the infrastructure then hybrids are the way to go. Not all of us have places to plug in to charge. And to have a proper diesel electric (i.e. all electric drive and a diesel generator), needs a larger electric engine, and therefore a larger more expensive and heavy batter pack to go with it.

So this solution seems to fit what we currently need in hybrids. A few more years of battery development, and we'll start seeing proper diesel electrics.

I really like the four wheel drive system. Normally the only time you need four wheel drive is low speeds, stuck in mud, or snow conditions. So this low power to the back wheels seems ideal.

Just needs to be put into a decent car, say a smaller hatch, a two seater sports or a coupé.

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Re: Nice idea (shame about the car!)

With a series hybrid yes you need a larger electric motor, but you can get away with a smaller higher efficiency engine/generator.

Most cars when cruising (i.e. motorway) don't use that much power IRO 10-15bhp depending on the car.

The size of the battery pack only determines how long it can run on electric only.

4WD is pointless the majority of the time for most road users, other than the exceptions you raised, which in the UK aren't that common unless you live on a farm.

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Poor real world economy

Autocar in their exhaustive road test got worse economy than the standard diesel

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Joke

the batmobile beats this

i think the batmobile is ahead of this

"Atomic batteries to power. Turbines to speed"

why dont we use a turbine to power this?

it would sound cool at least!

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Ogi

Re: the batmobile beats this

To my knowledge turbines give poorer fuel economy than IC Engines (at least for the size you can fit in a car comfortably).

Where turbines shine is in power to weight ratio, which is important for aircraft, and they improve in efficiency the larger they are (hence why they try to stick a few big engines on aircraft, rather than many little ones).

AFAIK that is the primary reason they have not been used in cars so far. Not to mention noise limits in urban areas, really hot exhaust, and probably a few other niggles I've not thought of at the moment.

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