GPL ... not so clean as this: the figures pollution

[jean63]

[...] but on the other hand it is not so "rotten" as that, the difference in CO2 emissions with a modern diesel is 5 to 10% and not 25% as you have written,[...]

I wrote that? Ah?

And where, STP?

yes yes, you wrote at least 20% to find eg in "where to find bio-fuel stations?"

[I Citro]

Woodcutter wrote:

Link on the first page of this post + this page of Motor-Nature where their articles on LPG and CNG are referenced ...

EXCELLENT articles ....... I read them late last night.

There I agree with you that the LPG is losing speed compared to the progress of diesel and gasoline engines (very good credible articles).

On the other hand, they do not talk about the famous particles, the main problem with diesel (my son had his catalytic converter blocked by this shit at 60000 kms !!!! on a Jumpy Citroën with a 1,9D engine; how do you explain this, and the vehicle was maintained and monitored by the network. After complaining well, the Citroën garage manager in Le Havre agreed to block the EGR valve flap in the "closed" position, admitting that this plugged pot catalytic converter (airtight: the engine was not plus acceleration !!) was surely due to a malfunction of this famous valve.

What is certain is that I intend to bring my LPG as far as possible and then I hope that the E85 network, NGV (see huge distribution network in Germany = 500 pumps), HVB (if it becomes legal) will be put in place and allow me to make a choice for the next time (there is a hybrid CNG / electric PRIUS in Germany). In Sweden, there is no longer any distribution of GPL.
To be continued.................

The nature engine site is very controversial when it comes to its statements on LPG, many LPG pros have objected to the lack of objectivity when it comes to the comparative analysis of LPG / diesel. Because particles are not taken into account even though they are one of the most harmful pollutants ...

I am reassembling an astra eco turbodiesel cylinder head of only 100 km and I have removed 000mm of crap that covered the internal walls of the intake pipe downstream of the EGR valve, (in which state is the catalyst ???). It seems that it should be condemned ... at 5 km my BX diesel was "clean" ...

I drive LPG on my 2 cars, a safrane and a Volvo 850 of 340.000 km and must admit that it is not economical.
By cons it is more breathable than a fuel oil and refueling is more pleasant ...
I also plan to "pantonize" an LPG (the safrane) in order to dig a new path. finally the engine management with LPG seems to me more "accessible".
For LPG, the petrol engine is the least suitable, diesel would be ideal.
Indeed the rotational speeds of diesel and their compression ratios would be more compatible with the operation of LPG. This is how LPG and CNG buses operate.

[jean63]

Citro wrote:

The nature engine site is very controversial when it comes to its statements on LPG, many LPG pros have objected to the lack of objectivity when it comes to the comparative analysis of LPG / diesel. Because particles are not taken into account even though they are one of the most harmful pollutants ...

I am reassembling an astra eco turbodiesel cylinder head of only 100 km and I have removed 000mm of crap that covered the internal walls of the intake pipe downstream of the EGR valve, (in which state is the catalyst ???). It seems that it should be condemned ... at 5 km my BX diesel was "clean" ...

I drive on LPG on my 2 cars, a safrane and a volvo 850 of 340.000.km and must admit that it is not economical.
By cons it is more breathable than a fuel oil and refueling is more pleasant ...
I also plan to "pantonize" an LPG (the safrane) in order to dig a new path. finally the engine management with LPG seems to me more "accessible".
For LPG, the petrol engine is the least suitable, diesel would be ideal.
Indeed, the rotational speeds of diesel engines and their compression ratios would be more compatible with the operation of LPG. This is how LPG and CNG buses operate.

Very interesting ............. phew it's nice to read this kind of investment. It is true that in principle diesel is a good engine, BUT there are these famous particles, this soot which clogs everything up to blocking a pot cat (I did not believe it). What is a shame is that I was too far from the garage which dismantled it (Clermont-Fd <=> Le Havre) and (maybe .... changed) because I would have liked to see the 'inside the pot cata clogged with soot at 60000 kms !!!
They did not want to leave it in the vehicle (as proof that it had indeed been changed) because they are supposedly obliged to keep the old one because of the metals contained inside or the standard exchange (is -it recoverable ??) !!!. There I think they told me a salad ...... when my son came back shortly after I did not notice that the pot was still shining, this which seemed strange to me.

Zac (on this forum) told me that we can uncork it (the pot cata) with "steam" karcher by blowing upside down and then letting it drain.

Another question on diesels: can the fact of supplying LPG reduce or eliminate this soot? This is what the English do on truck engines (I think: saw that in this forum but I don't know where).

Does driving on HVB change anything with soot + Nox?

Does fitting a pantone reduce soot + NOx?

[zac]

Does driving on HVB change anything with soot + Nox?

Does fitting a pantone reduce soot + NOx?

Hello

both clean everything; sometimes a little abruptly with the oil. So for soot it's good (except the first 10 minutes (cleaning old shit); for nox I don't know but there is no smoke even at high load.

one out of four or five vehicles has so much shit in the tank that when you go to oil you quickly clog the filter (record held by Henri 4m). after you change the filter and in 5 / 500km with a pantone + oil the engine is nickel.

Otherwise if you don't want to use a pantone, you have a product (berk) that works well, the C99.

@+

[jean63]

Does driving on HVB change anything with soot + Nox?

Does fitting a pantone reduce soot + NOx?

Hello

both clean everything; sometimes a little abruptly with the oil. So for soot it's good (except the first 10 minutes (cleaning old shit); for nox I don't know but there is no smoke even at high load.

one out of four or five vehicles has so much shit in the tank that when you go to oil you quickly clog the filter (record held by Henri 4m). after you change the filter and in 5 / 500km with a pantone + oil the engine is nickel.

Otherwise if you don't want to use a pantone, you have a product (berk) that works well, the C99.

@+

Bravo zac ..... great !! I award you the "Price of diesel depollution by HVB + pantone of the year 2006" and in this case and long live HVB diesel.

And to think that during that time, our cities are polluted with this shit of harmful particles.

I had seen the commercial for the C99 (MECA-RUN) but wondered if it was not a scam. Why rock this product?

I wanted to buy some for my son (Jumpy 1,9D and my daughter VW Transporter Tdi 110hp). The 1st therefore had his pot cata clogged at 60000 km and my daughter's VW smokes a lot when starting up (on the road I don't know) and she said the last time that it does not shoot. The pot cata has recently been changed (130000 kms) for the 1st time (?? not on a bus purchased at 75000 kms). With his boyfriend, he only takes the road (surfing, windsurfing, snowboarding) ... trips to Spain, Morocco, weekend trips from Toulouse to Biarritz (ocean) or Cap-d'Agde (Mediterranean); during the week it is parked in a private car park. I told them that the EGR valve should be stuffed with soot and not that the valve ...... .

So I'm going to buy them (the 2) a little gift "C99" recommended by a zac specialist . (18 euros for a dose of 250 ml). Is one dose enough?

Thank you for your lights in Réunion. By the way, my daughter crossed your island on foot via the interior (Mafate circus ...) a few years ago. It was a gift for passing the entrance exam to Supaéro Toulouse (aeronautical engineer).

[zac]

Is a single dose enough ?.

Hello

the "dose" is for 1000 liters, I advise you to double on the first 2 full, with full (average of 40 liters) that makes, if you double twice: 2 full. Basically 23 € full is not death.

Normally on the fuel economy you have to pay it (otherwise yell at the bad guy)

@+

[jean63]

Is a single dose enough ?.

Hello

the "dose" is for 1000 liters, I advise you to double on the first 2 full, with full (average of 40 liters) that makes, if you double twice: 2 full. Basically 23 € full is not death.

Normally on the fuel economy you have to pay it (otherwise yell at the bad guy)

@+

OK thank you for the info, I was really hesitant to use this product but it disturbs me to see them running diesel with the permanent risk of a problem because of this fouling linked especially to the EGR valve.

How is it that the old Mercedes diesel made 600 kms without EGR valve and without catalytic converter ?? !! Did you say "plaster on a wooden leg"?

[Woodcutter]

[...] The site engine nature is very controversial when with its declarations on the LPG, many pros of the LPG are insurgent against the lack of objectivity when with the comparative analysis LPG / diesel. Because particles are not taken into account even though they are one of the most harmful pollutants ...
[...]

Yes, it is obvious, when we read all the articles produced on LPG, that they have a grudge against this fuel (why? ) ...

The articles are always a little oriented but I do not agree on the lack of objectivity (especially if it comes from the pros of the GPL, necessarily pro-GPL ), for several reasons.

First of all, the comments are based on figures, verifiable and which themselves do not have to be objective or not: they are!

Then, Motor-Nature is resolutely taking a technical and forward-looking path, which can also be seen in their admiration for the CAP for example (although we could find fault with it ...). In this context, the diesels they are talking about are of the latest generation, with DPF and soon DeNox catalysts ... So that very considerably limits the problems of particles and NOX, which are the most annoying points of diesel engines.

[Woodcutter]

[...] How is it that the old diesel Mercedes made 600 000 kms without EGR valve and without catalytic converter ?? !! Did you say "plaster on a wooden leg"?

Much higher consumption compared to the power supplied and the weight to be moved. Much lower power per liter.
Higher emissions of particles, CO, NOx and HC.

Other times ...

[jean63]

Then, Motor-Nature is resolutely taking a technical and forward-looking path, which can also be seen in their admiration for the CAP for example (although we could find fault with it ...). In this context, the diesels they are talking about are of the latest generation, with DPF and soon DeNox catalysts ... So that very considerably limits the problems of particles and NOX, which are the most annoying points of diesel engines.

Why not also talk about the EGR valve which is stuffed with soot and is never cleaned for maintenance, for lack of instructions from the manufacturer? How to explain that this soot goes to force-feed the catalytic converter with soot in the event of malfunction?

For me a modern diesel is good when it's new, the older it gets and the more problems arise and hello the damage.