Thread: The "New" Defender, ...Your Thoughts?

Just had to look to compare

Volvo Penta D3 (marine diesel engine)
110HP is generated at 2500RPM
making 310NM
burning 13L/hr of diesel
dry weight 300kg

Imagine how big a prop 1000NM can be spun at 50rpm compared to the diesel that only generates 310NM at 2500rpm

I cant seem to see any figure on actual claimed electric motor efficiency of the Protean
but 75KW at 400V is 187A... lets say its 80% efficient you are only asking for 225A at 400VDC to make that thing sing!

Hmm just playing - see below
145kg of 400V lith gets you just 12 minutes run time at 200A
Might be a little bit compromising for range!
Thinking battery tech might have a ways to go before my dream boat comes to fruition!!!

[ame]http://www.brusa.eu/fileadmin/Diverses/Download/Datenblaetter/BRUSA_DB_EN_EVB1.pdf[/ame]

e revelation came as Volvo said it believes it has developed its last generation of petrol and diesel engines.
They are expected to continue another 10 years or so before hybrid and electric vehicles dominate the market.

There will always be a petrol, diesel, hydrogen motor to service the hybrid part.

Are we off thread yet enough.

Originally Posted by roverrescue

Just read this on the interwebs so it must be true

The revelation came as Volvo said it believes it has developed its last generation of petrol and diesel engines.
They are expected to continue another 10 years or so before hybrid and electric vehicles dominate the market.

In any case, if Lovlov are onto their last generation of ICE I can only imagine the future is closer than some might believe...

I would love to get a hold of some of those Protean inwheel motors...

I can envisage them in marine application.
Having all that torque at low rpm means you could throw a huge wheel - relegating the biggest drawback of prop driven boats to history (single speed)

I see a twin screw 100HP, 1000NM 400VDC lithium powered 32 footer
- 50 degrees cooling is easy at sea with a heat exchanger...
- "engines" weighing 70kg gives you about 500kg of battery capacity before coming close to twin diesos with gear boxs... better still you can place the batteries anywhere in the hull for best performance.
-Or run a smaller diseo generator to charge the batteries if needing more range!

silent high torque propulsion is near! Bring it!

Steve

I see electric vehicles in cities but in the country,no chance.There will still be a need for ICE powered vehicles,either directly as they do now or by a genie to traction motors. Pat

but in the country,no chance

So current Lithium Ion technology can give a +/-200mile (320km) range
Lithium Sulpher with up to 5 times the energy density should stretch that to 1000km+

never say never

VW quite likely did more for hybrid/EV technology than imaginable.
On one hand the US will continue to tighten even more on vehicle emissions - as well as fund Musk etal.

LR I am sure are gazing into crystal balls to make the right play for the next generation of vehicles if they are to not become a legacy brand.

Defender is an iconic brand - LR could do worse than release a "new defender for the electric age". Perhaps the Series I utilises a small diesel (EU based emphasis) hybrid to power traction motors.

s

Originally Posted by roverrescue

but in the country,no chanceVW quite likely did more for hybrid/EV technology than imaginable.
On one hand the US will continue to tighten even more on vehicle emissions - as well as fund Musk etal.

US emissions laws are a form of protectionism thinly disguised as environmental policy. They make life tough for foreign diesels, but they're a LONG way from threatening the medium term future of locally produced ICE vehicles. Until Detroit gets serious about electric, I can't see that changing. The 5-6 litre V8 is still the bread and butter of the North American roads.

It's exciting to see where the technology goes with EVs in the next few years, particularly with regard to the batteries. The Model S is an awesome piece of engineering, but 2.1 tonnes is too much pork. Getting the weight down and the capacity up is going to be the big challenge.

My point is that with the US keeping small "environmentally friendly" diesels out will by market forces push the EU players VW,BMW, Peugeot, Renault, Volvo etc etc to increase investment in electric options to enable them to break into the huge US market.

Detroit (who to be fair are trying - aluminium and composite bodies, lighter V6s with forced induction etc etc) will be slowly left behind.

Of course if you listen to economists the EU could all fall down and plunge us into the dark ages for another 1000 years

s

More V6 F150s are being sold than V8s now.

Originally Posted by roverrescue

but in the country,no chance

So current Lithium Ion technology can give a +/-200mile (320km) range
Lithium Sulpher with up to 5 times the energy density should stretch that to 1000km+

never say never

I agree. EVs with big ranges will be a reality and they won't have an issue in the country. The only thing that will change is refueling and it would be wrong (IMO) to assume that that is an issue that will hold them back. It will just be one of many changes we have coming in the next decade.