[volkman10]

German engineering firm pushes emissions far below required levels using existing hardware and is available immediately!

Will it lead to revival of diesel cars in Europe ?

Announcing the breakthrough, Bosch’s chief executive, Dr Volkmar Denner :

There’s a future for diesel. Today, we want to put a stop, once and for all, to the debate about the demise of diesel technology

diesel will remain an option in urban traffic, whether drivers are tradespeople or commuters

Diesel NOx emissions reduced to nearly a tenth of future limits by new turbocharger and airflow-management technology.

A breakthrough in the management of diesel emissions has been announced today, enabling diesel cars to undercut future limits for nitrogen oxide (NOx) by almost 90 per cent.

Cars must currently emit no more than 168mg/km (milligrams per kilometre) of NOx and, in 2020, that limit will reduce to 120mg/km in real-world driving tests, and 80mg/km in lab assessments. But new technology developed by Bosch allows a diesel VW Golf to emit just 13mg/km of NOx in mixed driving conditions, measured using the latest RDE paradigms.

Even in urban driving, where emissions are typically far higher than on the open road, cars equipped with the new technology emit around 40mg/km of NOX - roughly a third of the permitted limits being introduced in 2020

The technology works by managing exhaust gas recirculation and using optimised turbochargers. It is effective as soon as a car is started and works at all engine speeds, allowing it to operate effectively both when engines are cold, and during urban driving. The system is also effective when drivers accelerate quickly.
Journalists were given the opportunity to drive around Stuttgart in cars equipped with the new system. The results captured from these demonstration drives showed average NOx emissions of under 40mg/km, despite the cars being driven in city centre traffic.

While the system cannot be retrofitted to old cars, it is based on already-existing components and is available immediately. It can be incorporated into car makers’ production projects, and the system allows diesel engines to maintain their fuel economy and carbon dioxide (CO2) emissions.

Source:

[prithm]

Originally Posted by volkman10

The technology works by managing exhaust gas recirculation and using optimised turbochargers. It is effective as soon as a car is started and works at all engine speeds, allowing it to operate effectively both when engines are cold, and during urban driving. The system is also effective when drivers accelerate quickly.

This is wonderful development especially after the VW's Dieselgate.

How does enhancing EGR and Turbo themselves cause such remarkable efficiency ?

[swiftdiesel]

This is the best news I've heard in a long time after the 50 stars country's conspiracy to make the world electric. I'm sure Elon Musk wouldn't wanna wake up to that news!

[libranof1987]

Poetic irony that one German company is cleaning up after another.

Given the announcements from several manufacturers and countries to move completely towards EVs in the very foreseeable future, this might just be tad too late. The fact that this can't be retrofit into existing cars (already manufactured) doesn't help diesel's cause.

Hopefully though, this technology finds its way to products in countries such as ours where diesel vehicles will continue to be sold in large numbers (UVs, commercial vehicles).

[VKumar]

Originally Posted by libranof1987

Poetic irony that one German company is cleaning up after another.

Best part is that the car in the photograph looks like a VW Golf.

I hope it's the Bosch itself and not the VW car playing tricks with them 'thinking' that it's being 'tested' on a 4 wheel dyno this time!!

[theredliner]

Originally Posted by libranof1987

Poetic irony that one German company is cleaning up after another.

Originally Posted by VKumar

I hope it's the Bosch itself and not the VW car playing tricks with them 'thinking' that it's being 'tested' on a 4 wheel dyno this time!!

Wasn't Bosch the one who supplied ECUs to VW with the cheating software implemented in case of dieselgate?

[srishiva]

How long do such innovations need to take place for fossil fuels? Ultimately, its how they do it and what is the premium over existing implementation that matters.
Hope they hand it over to such people who found out about the diesel gate scandal or other scandals involving diesel emissions. Did VW fix this particular Golf's emission system

[volkman10]

Bosch Diesel "Breakthrough" might slow switch to electric cars and is great news to help in the fight against CO2-induced global warning.

If the proposed technology provides the silver bullet Bosch hopes, it could allow manufacturers to rebalance their planned portfolios to get more of the fleet-wide efficiencies they need to achieve from diesel efficiencies rather than electrification. In a recent report we highlighted the unpopularity of diesel as one of the things that had encouraged manufacturers to step up their plans for EV (electric vehicle) adoption,” Fitch Ratings said in a statement.

Will revive the diesel car sales in EU:

In Germany, Europe’s biggest market, diesel sales dived to just over 30% of the market in March, from 45.1% in January 2017. Diesel sales are sliding across Europe. In 2011, 55.7% of all new cars sold in Europe were diesel. This has been on the slide and by 2025 diesel’s share of the market could reach to between 15 and 25%

Big manufacturers have yet to confirm if this will be a viable new system for them.

Link

[vvijay]

Quite interested to understand how this innovation specifically works out with "optimized turbochargers". However changes to EGR / air-flow management rather is quite understandable . If this is the case, I'm sure automotive associations / Governments would certainly rethink extending diesel powertrains by a few more years.

Cheers,
Vijay

[Sankar]

Diesel passenger cars may live a bit longer with Bosch's tech, but I don't think it will be fun anymore.

• Real driving emissions (RDE) optimised turbo for low end and transient response.
• Optimised engine map for low fuel consumption and reduced nox emissions.
• DPF, diesel oxidation catalyst, nox storage catalyst and diesel exhaust fluid for SCR is still a requirement.
• EGR now works at all RPM ranges.
• There is an increased fuel efficiency penalty (1.5%) in stop and go traffic from cold starts.
• Talks about further optimisation at several sections.

A detailed technical explanation from Bosch's press release is attached with this.

Src: http://www.bosch-presse.de/pressport...em-155524.html

[roy_libran]

Originally Posted by Sankar

Diesel passenger cars may live a bit longer with Bosch's tech, but I don't think it will be fun anymore.

You might also recall that "once upon a time", leaving everything else aside, there was a case for Pre chamber and Port injection in the olden days (IDI...). Those engines used to rev freely, almost like petrol, and didn't feel as constipated as the later engines that succeeded them with all the airflow plumbing. Of course they were worse from the emissions standpoint and lacked the boost from the turbos.

[alpha1]

... and my clairvoyance tells me that there will be forum threads in future on how to bypass the exhaust gas re-circulation circuit to gain the precious 0.718 Nm of torque or run the extra 27 meters per liter of fuel.

On the other hand, the EGR method is surely quite mature, how could Bosch come up with something revolutionary? Do we smell some snake oil here?

[Sankar]

Of course there will be many threads on forums everywhere and aftermarket industry to support EGR delete. It has been going on forever and more so in the developed world.

https://chiptuning.com.au/egr_blanking_info/
http://www.4x4community.co.za/forum/...el-and-the-EGR
http://forum.bmw5.co.uk/topic/67369-egr-delete/
http://www.sinspeed.co.uk/bmw-exhaus...elete-service/
https://www.darksidedevelopments.co....emoval-delete/

Bosch will do its best to extend the culling of Diesel engines in passenger cars or be in the limelight showcasing green diesel tech like VW is only talking about their electric vehicles now.

Originally Posted by roy_libran

You might also recall that "once upon a time", leaving everything else aside, there was a case for Pre chamber and Port injection in the olden days (IDI...). Those engines used to rev freely, almost like petrol, and didn't feel as constipated as the later engines that succeeded them with all the airflow plumbing. Of course they were worse from the emissions standpoint and lacked the boost from the turbos.

Emissions will eventually kill all airbreathing engines and I hope electric cars be more affordable by then. Hope it won't be pods as seen in sci-fi movies.

[GTO]

Unless this is verified by an independent agency or two, I'm going to take the news with a pinch of salt. It appears to be a relatively simple solution to what was a complex decades-old problem? After trying everything they could, manufacturers like Mercedes actually resorted to adding a urea solution (which needs its tank replenished at service intervals) to reduce NOx - related link.

Scepticism aside, as a lover of turbo-diesels, I sure hope it's true .

Originally Posted by VKumar

Best part is that the car in the photograph looks like a VW Golf.

[SS-Traveller]

One more article on the same topic: https://practicalmotoring.com.au/car...ns-technology/

A few points that are interesting:

“Equally important is the influence of temperature. To ensure optimum NOx conversion, the exhaust gases must be hotter than 200 degrees Celsius. In urban driving, vehicles frequently fail to reach this temperature. Bosch has therefore opted for a sophisticated thermal management system for the diesel engine. This actively regulates the exhaust-gas temperature, thereby ensuring that the exhaust system stays hot enough to function within a stable temperature range and that emissions remain at a low level.”

Bosch doesn’t talk about what customers will take up the new technology, simply saying that it’s working with a number of OEMs. It said its technology is available for use now and won’t increase the cost of a diesel engine as all of the components are already used in the construction of a diesel engine.

Indeed, Denner went on to say, he believes the diesel engine still hasn’t realised its full development potential saying it will use artificial intelligence to build on the tweaks it presented. Bosch believes it can tweak diesel engines to produce no emissions, beyond CO2. In the short-term, Denner said he’d challenged Bosch engineers to develop a diesel engine that produced no significant particulate or NOx emissions.