I'd always thought that while LPG is much cleaner than other fuels (especially diesel), I could never see how it was beneficial in terms of CO2 as I used about 20% more LPG than petrol to travel the same distance.

Someone has just pointed me to the Department of Energy & Climate Change website and their Conversion Factors for Greenhouse Gasses that show the kg CO2e (equivalent) per kWh for different fuels are:
LPG - 0.23041
Petrol - 0.24552
Diesel - 0.26161

Or in other words, even though I get through more of it, it gives out less CO2 for a given amount of energy. I just thought someone on this forum might find that vaguely interesting. Current:
- 2017 L405 3.0 V6 Autobiography
Sold:
- 2013 L405 4.4 TDV8 Vogue
- 2004 L322 4.4 Vogue (BRC LPG)
- 2002 L322 4.4 HSE (having fixed timing chain guides)
- 2000 P38 4.6 Vogue (BRC LPG)
- 1981 2-door In-Vogue
- 1980 Ex-Army SIII LWB
- 1976 SIII LWB
- 1968 SIIA
Stripped for parts:
- 2003 L322 4.4 Vogue

Similar calculation for humans is (I believe) @ 1.200000kg Co2e per kWh
(although I know it doesn't count as we are part of the carbon cycle!)

Not feeling so bad about my TD6 with its CO2 emissions being only 6% worse than petrol .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

So if humans are roughly 5 times higher CO2 than petrol engines, surely the answer is to keep nice big meaty V8 petrol engines and get rid of humans?

Yes, but you would have to stop eating and breathing too!  .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

The reason you use more LPG is due to the energy density, so it makes sense that less energy/litre would give less CO2/litre. Very interesting. Thx

That IS interesting to me zebedee!

I am always explaining why my "gas guzzling V8" is more environmentally friendly than the 'eco' car being driven by the interlocutor. I even got asked by a renewable energy company guy how mine fared and he was very impressed when I told him.

With my Nitrogen Monoxide (or Dioxide??) emissions at nearly 0% on LPG, I can't for the life of me understand why the Govt and driving organisations aren't pushing LPG as the way ahead!? Given that Diesels are likely to receive a hefty tax rise soon due to their poor emissions and Petrol being equally under threat, Why isn't there more tax incentives to go LPG? I for one have no probs with my LPG other than lack of stations selling it!

Who do I need to write to get this redressed?

The calorific value of LPG is lower than petrol, however the octane is much higher, I've recently been playing with the ignition map in mine and got it running noticeably faster on LPG than petrol...

So... faster and better for the Polar Bears....  Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Dolphinboy wrote:

That IS interesting to me zebedee!

I am always explaining why my "gas guzzling V8" is more environmentally friendly than the 'eco' car being driven by the interlocutor. I even got asked by a renewable energy company guy how mine fared and he was very impressed when I told him.

With my Nitrogen Monoxide (or Dioxide??) emissions at nearly 0% on LPG, I can't for the life of me understand why the Govt and driving organisations aren't pushing LPG as the way ahead!? Given that Diesels are likely to receive a hefty tax rise soon due to their poor emissions and Petrol being equally under threat, Why isn't there more tax incentives to go LPG? I for one have no probs with my LPG other than lack of stations selling it!

Who do I need to write to get this redressed?

All good news, against the uninformed, 'bloke down the pub' type experts.
My MOT was this week, my CO was 0.01, and even less last year. And was only 3ppm hydrocarbons, where the limit is 1200. I think, that with londons pollution, always over EU targets, I'm actually driving round, purifying the air!

And that's at 165k (original engine.)

I've had LPG cars and quite liked them. There are many environmental benefits to it but the main drawback for me was lack of factory installed systems. The bolt on aftermarket, dual fuel systems (certainly older ones) had plenty of issues and there simply aren't enough filling points around. Having to plan everything around knowing where to get fuel became tiresome TBH.

But, what I will say is that engine oil always stayed clean, increased low end torque, smoother power delivery, quieter engine. Great!

If the car makers offered it as a factory option, and I mean genuine factory rather than those aftermarket dual fuel things which Vauxhall, Volvo etc offered for a short while. If that were to happen I'd have another. No losing the spare wheel, no massive tank in the boot and none of the messing around. Just a car which is fuelled with LPG. That would be a winner.

Of course, that needs R&D and millions of miles of testing which is where the problem lies.

Dolphinboy wrote:

That IS interesting to me zebedee!

I am always explaining why my "gas guzzling V8" is more environmentally friendly than the 'eco' car being driven by the interlocutor. I even got asked by a renewable energy company guy how mine fared and he was very impressed when I told him.

With my Nitrogen Monoxide (or Dioxide??) emissions at nearly 0% on LPG, ... :