Manual Mapper Project for Toyota Diesel Engines

[Whitey Shockie Maker of the Month Award Find all posts View Profile Close Whitey]

Hey Ozbush,

What are the implications for NOx emissions when completely blanking the egr system?

Best

Mark

[brogers Advanced Member Find all posts View Profile Close brogers]

Hello Ozbush,

do you have any plans for a mapper for the 2016 Toyota "GD" 2.8 litre Diesel engine?

kind regards,

B

[Ozbush Junior Member Find all posts View Profile Close Ozbush]

Hey Ozbush,

What are the implications for NOx emissions when completely blanking the egr system?

Best

Mark

Hi Mark,
The NOx emissions only countable up to 60,000 km or so on brand new engines, after that you will find there are many other gas emissions coming out so much that NOx gas is a least of worry.
Take every diesel cars for NOx emission test after 60,000 km, every car will fail the test for NOx emissions.
In theory your must replace engine every 60,000 km to meet NOx emission standard.
The reason is after 60,000 km or so engine wears out enough to produce NOx gas over the limit it can't be certified for NOx emission standard.
Recirculating the exhaust gas back into the combustion chamber to reduce the burning temperature so that NOx is not produced is a absolute stone age concept. And only up to 60,000 km or so?
What about other problems caused by EGR? Is it really helping environment?
It's something to think about.

Ozbush

[Ozbush Junior Member Find all posts View Profile Close Ozbush]

Hello Ozbush,

do you have any plans for a mapper for the 2016 Toyota "GD" 2.8 litre Diesel engine?

kind regards,

B

Hi,
I am currently working on the development for new mapper which will work with digital sensor system like Prado 150 and 200.
It will be available around middle of this year.

Cheers
Ozbush

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

Is it really helping environment?
It's something to think about.Ozbush

Japan taxed the hell out of cars with more than 40,000km. Result - they became cheap imports for places like Australia and NZ. In effect they shifted the problem. There are people driving cars here that guzzle more oil than petrol.

[Ozbush Junior Member Find all posts View Profile Close Ozbush]

Japan taxed the hell out of cars with more than 40,000km. Result - they became cheap imports for places like Australia and NZ. In effect they shifted the problem. There are people driving cars here that guzzle more oil than petrol.

Thank you Bushbasher,
Yes, that is very Precisely correct.
They know that by experience. They were wondering why the smog wasn't reduced after EGR system was introduced and found out brand new engine was producing NOx again only after 40,000 km.

To encourage to get rid of the old car only done 40,000 km by taxing them very heavily.
So they sell it to other countries who will buy them.
There are a lot more facts that I know but I can't share it with you here.

Cheers
Ozbush

PS: Actually only about 20,000 km after NOx level was out of standard limit on some car I have tested.

[Whitey Shockie Maker of the Month Award Find all posts View Profile Close Whitey]

They know that by experience. They were wondering why the smog wasn't reduced after EGR system was introduced and found out brand new engine was producing NOx again only after 40,000 km.

To encourage to get rid of the old car only done 40,000 km by taxing them very heavy.
So they sell it to other countries who will buy them.

Hey Ozbush,

I guess this is also the reason why cities like Paris are legislating diesel vehicles out of the city. I think London is also planning on prohibiting diesel vehicles from driving in the city.

Best

Mark

[Ozbush Junior Member Find all posts View Profile Close Ozbush]

It is the problem all over the every car and types of engine. Not just diesel.
Although petrol engine is somewhat successful reducing the Nox but it also start producing Nox after 60,000km but the level is lower than diesel.
The reason why some cities are trying to reduce the diesel engine car entering the city is because quite a lot of them still don't have EGR system but also EGR system doesn't work in practice even if you have them.

[Whitey Shockie Maker of the Month Award Find all posts View Profile Close Whitey]

It is the problem all over the every car and types of engine. Not just diesel.
Although petrol engine is somewhat successful reducing the Nox but it also start producing Nox after 60,000km but the level is lower than diesel.
The reason why some cities are trying to reduce the diesel engine car entering the city is because quite a lot of them still don't have EGR system but also EGR system doesn't work in practice even if you have them.

We'll all be driving hydrogen powered cars one day!

Best

Mark

[Ozbush Junior Member Find all posts View Profile Close Ozbush]

We'll all be driving hydrogen powered cars one day!

Best

Mark

Yes in fact HHO or hydrogen gas can be very effectively remove NOx gas, almost completely.
Former CEO of VW Ferdinand designed and developed perfect Nox gas solution using HHO but was voted out by EU committee due to petrol EGR system is already in use since 1980's.

It was easier to just use existing system which worked very well in petrol engines. So they just implemented petrol EGR system onto diesel with dire consequences.
Now they are using DPF (Diesel Particulate Filter = SOOT) with EGR system which is again another band aid solution.
Watch out guys! We here in Australia soon will be mandatory law to have DPF on every diesel engine.

The new pollution control system designed by VW was a very simple and effective by injecting hydrogen gas into inlet manifold to help and complete the combustion. It was awesome invention and got rid of the most of pollution gas we ever known.

However, auto people are conservative and don't like new system.

Cheers
Ozbush

[brogers Advanced Member Find all posts View Profile Close brogers]

Hydrogen you say...mmm, lets see, what happened when the Germans put hydrogen into something...the Hindenberg ring any bells

[Whitey Shockie Maker of the Month Award Find all posts View Profile Close Whitey]

Hydrogen you say...mmm, lets see, what happened when the Germans put hydrogen into something...the Hindenberg ring any bells

Hey,

This is way off the topic of the thread now....but the fire in the Hindenburg was from the coatings on the outer fabric. You cannot easily see hydrogen burning, it is almost invisible, the flames on the Hindenburg are from other stuff. The presence of hydrogen would have slowed the fire down, hydrogen is not easy to burn!

Best

Mark

[brogers Advanced Member Find all posts View Profile Close brogers]

Hey,

This is way off the topic of the thread now....but the fire in the Hindenburg was from the coatings on the outer fabric. You cannot easily see hydrogen burning, it is almost invisible, the flames on the Hindenburg are from other stuff. The presence of hydrogen would have slowed the fire down, hydrogen is not easy to burn!

Best

Mark

Mmmm...hydrogen is is not only highly flammable, but has a very wide flammable range,and a wide explosive range...yes,it's off topic indeed, but the point is that hydrogen, LPG and petrol all have particular challenges wrt safe storage and safe use. You cannot easily see hydrogen burning if it's in a high oxygen environment, otherwise it burns with a blue flame...or whatever colours other materials burning at the same time impart to the flame..Either way, hydrogen has unique properties, and it's far from safe.

[winniliss Avid PP Poster! Find all posts View Profile Close winniliss]

Hello Ozbush,

The EGR coolant bypass will be easy. I will effectively disconnect the hose coming from the external side of the EGT and connect it to the thermostat housing. I will have to get a longer hose to do this. Once I have I will post photos.

I had N-Shift last night and tonight but I will spend some time on it Friday and the weekend as I have other things to do on the vehicle.

Cheers

Winston

[Whitey Shockie Maker of the Month Award Find all posts View Profile Close Whitey]

Mmmm...hydrogen is is not only highly flammable, but has a very wide flammable range,and a wide explosive range...yes,it's off topic indeed, but the point is that hydrogen, LPG and petrol all have particular challenges wrt safe storage and safe use. You cannot easily see hydrogen burning if it's in a high oxygen environment, otherwise it burns with a blue flame...or whatever colours other materials burning at the same time impart to the flame..Either way, hydrogen has unique properties, and it's far from safe.

Hey,

I have worked for over 20 years on hydrogen storage materials up to pressures nearing 10kbar, and for vehicular applications, there are a lot of misconceptions around how safe hydrogen is and how it will be used in vehicles.

As I think you are a retired science guy, I am sure you will get a kick out of these interesting links;

https://www.youtube.com/watch?v=QiD7thxC9UQ

http://cleancaroptions.com/html/hydrogen_safety.html

In the later part of the video you will see Gary Sandrock, one of the pioneers of developing metal hydrogen storage tanks for vehicles in the early 70's.

I'll let you judge what you consider to be safe from the images on the website.

If I was in a crash and unable to get out of the vehicle quickly, I would rather have a punctured carbon composite fuel tank containing a mix of metal-hydride and hydrogen than a punctured fuel tank full of petrol.

Here is another interesting video showing the construction of the Toyota Mirai, where you can see the composite high pressure hydrogen tanks around the 5 minute mark;

https://www.youtube.com/watch?v=oOUjqxec4bA

There are still many issues with hydrogen powered vehicles, efficiency of hydrogen production is a big problem thermodynamically (roughly 66% inefficient) and of course pollution wise, and the volumetric and gravimetric densities of hydrogen storage materials remains problematic. Fuel cells are also still riddled with temperature issues and expensive catalysts.

Whether hydrogen powered cars ultimately make it in the economic sense is still a very open question.

There are arguments that retro-fitting the global vehicle fleet and running hydrogen straight though existing internal combustion engines will ultimately be a cheaper and perhaps more environmentally friendly solution.

Does this mean the days of diesel and petrol powered vehicles are numbered? I don't think so, and there are prototype diesel/electric hybrids running around that use less than 1.0l/100km. Will there be enough battery material for them to survive? Perhaps not, but hybrids will definitely be with us for a while!

After saying all of that, I'm going out to buy a Tesla!

Best

Mark