Author Topic: Honda Jazz likely to get new 1.0-litre turbo petrol power  (Read 15515 times)

jazzaro

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #15 on: October 11, 2016, 04:52:35 PM »
I would like to know where these incredible mpg figures come from and how they are allowed to claim them. BMW i8 and Misubishi PHEV can both claim 135mpg + but after 15 to 20 miles when battery is flat the consumption is no better than 30mpg. Same with small turbo, if you use the power you burn the fuel (still can't get away from 14:1 air / fuel mix). Turbo will give more torque at lower revs, and help reduce pumping losses, but you 'don't get owt for nowt'
This is the comparison between two Ford Fiesta engines, the 3L 1.0 naturally aspirated:
http://www.spritmonitor.de/en/overview/17-Ford/147-Fiesta.html?fueltype=2&constyear_s=2013&constyear_e=2016&power_s=80&power_e=80&page=2&gearing=1&powerunit=2
and the 1.0 turbocharged.
http://www.spritmonitor.de/en/overview/17-Ford/147-Fiesta.html?fueltype=2&constyear_s=2013&constyear_e=2016&power_s=99&power_e=101&page=4&gearing=1&powerunit=2
The fuel consumption appear a little bigger, but driving pleasure and boost are much bigger.
IMHO,  a 1.0 turbocharged is a better choice for cars like Fiesta, Jazz, 208...

Skyrider

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #16 on: October 11, 2016, 06:42:21 PM »
You can't change the laws of physics, if you use the power, you use the fuel.

TG

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #17 on: October 12, 2016, 12:32:44 AM »
You can't change the laws of physics, if you use the power, you use the fuel.
A litre of petrol contains ~34,000kJ (=9.4kWh), how many of those joules are used to turn the wheels is the issue.

Every combustion engine is Fuel > Heat > Motion, no matter if it's in a petrol car, diesel boat, or avgas jet.  We are getting better at the conversion, improving from mid 20s to nearly 30%.  Toyota have an engine in development that has a claimed thermal efficiency of 38%, current F1 power units are hitting 40%. 

So what about capturing the other 60% wasted thermal energy somehow.  Steam turbine? Any heat > chemical battery technologies?
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TG

jazzaro

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #18 on: October 12, 2016, 09:13:48 AM »
You can't change the laws of physics, if you use the power, you use the fuel.
Yep.
But using modern techniques, you can decide HOW use the power from petrol (wasting less power in thermal energy), and WHEN using the power for speed increasing.

Skyrider

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #19 on: October 12, 2016, 01:45:34 PM »
Like using i-vtec or not?

John Ratsey

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #20 on: October 12, 2016, 05:30:30 PM »
You can't change the laws of physics, if you use the power, you use the fuel.
One small contribution to the energy saving is that three cylinders will have slightly lower friction than four of about the same size while tick-over fuel consumption will be less (under those various conditions when the engine auto-stop doesn't work).

carlnike

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #21 on: October 16, 2016, 08:53:30 PM »
Hopefully it'll be supported by hondata

madasafish

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #22 on: October 17, 2016, 10:37:24 AM »
I would like to know where these incredible mpg figures come from and how they are allowed to claim them. BMW i8 and Misubishi PHEV can both claim 135mpg

Facelift Mk3 might get the new engine, hoping that we'll get the 1.5 iVTEC + i-DCD hybrid gearbox that's just been put in the Jazz's cousin the Freed, and the Japanese version of the Honda Jade (110kW & 203 Nm), but I don't think that Swindon is making this engine/gearbox right now.
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TG


err The Mark 3 is made in Mexico iiirc

ColinS

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #23 on: October 17, 2016, 11:07:42 AM »
err The Mark 3 is made in Mexico iiirc
Mine was made in Japan

mikebore

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #24 on: October 17, 2016, 11:40:04 AM »
err The Mark 3 is made in Mexico iiirc
Mine was made in Japan

How do you check this? Thanks

ColinS

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mikebore

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #26 on: October 17, 2016, 12:24:34 PM »
Quote
All the info is contained in the VIN.  This may help https://en.wikibooks.org/wiki/Vehicle_Identification_Numbers_(VIN_codes)/Honda/VIN_Codes

Thanks but It was bit easier than that....I photo'd the plate inside the passenger door to get the VIN, but then noticed on the plate "Made in Japan" !
« Last Edit: October 17, 2016, 12:28:42 PM by mikebore »

Skyrider

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #27 on: October 17, 2016, 01:30:10 PM »
I think all the UK spec Mk3 jazz have a VIN starting with a J. The HRV is from the general direction of the Americas.
« Last Edit: October 17, 2016, 01:34:04 PM by Deeps »

TG

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #28 on: October 17, 2016, 01:34:13 PM »
Facelift Mk3 might get the new engine, hoping that we'll get the 1.5 iVTEC + i-DCD hybrid gearbox that's just been put in the Jazz's cousin the Freed, and the Japanese version of the Honda Jade (110kW & 203 Nm), but I don't think that Swindon is making this engine/gearbox right now.
.... but I think that's only being produced in Japan right now.
http://world.honda.com/automobile-technology/i-DCD/

I seem to be behind the curve, the Mk3 Hybrids spotted by John Ratsey in Sri Lanka must have this 1.5L + 7 speed dual clutch hybrid combination in them, Honda has been talking about it since 2013.   

https://youtu.be/C--2LxxaFto?t=1m7s  The video suggests:
 No CVT hybrid
 1st gear is electric only?
 Full EV mode
 Electric drives odd gears while petrol is in all gears?
 The petrol engine is bump started
 Lithium instead of NiMH batteries
 No engine braking - purely regenerative plus discs

I like it a lot, much improved over the IMA unit.  Hopefully it would mate to the 1L 3 cylinder turbo unit as well for a lighter, smaller, punchier, torque~ier unit. 
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TG
« Last Edit: October 17, 2016, 02:14:55 PM by TG »

ColinS

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Re: Honda Jazz likely to get new 1.0-litre turbo petrol power
« Reply #29 on: October 17, 2016, 01:41:27 PM »
Thanks but It was bit easier than that....I photo'd the plate inside the passenger door to get the VIN, but then noticed on the plate "Made in Japan" !
LOL. That would work  :)

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