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29th April 2017, 15:39 | #1 |
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| BS-IV engines with EGR & SCR in Commercial Vehicles Ashok Leyland has showcased its range of products featuring Intelligent Exhaust Gas Re-circulation (iEGR) technology to adhere to BS-IV emission norms, and its industry-leading services at its annual Global Conference 2017. Globally, two technologies are used for meeting the latest emission standards – SCR (selective catalytic reduction), which is used by companies like Daimler, and EGR (exhaust gas re-circulation). Ashok Leyland has brought its indigenous innovation in the EGR technology to not only meet BS-IV emission norms but also ensure reliability. About 200 engineers in its R&D wing worked on developing the new technology. Read full article here.. http://autotechreview.com/news/item/...echnology.html http://www.thehindubusinessline.com/...cle9657209.ece http://rajasthanpatrika.patrika.com/...s-2558257.html |
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29th April 2017, 20:51 | #2 |
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| re: BS-IV engines with EGR & SCR in Commercial Vehicles Will this technology be a significant differentiator for Ashok Leyland vis-a-vis the competition? Will they be able to undercut the competition and sell more vehicles? Increase their market share? |
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29th April 2017, 22:46 | #3 | ||
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| re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
Their main problem is spare parts availability which is decreasing their market share. Quote:
A.L. says that they have achieved this with minimal electronics and sensors (this is the reason; I have created this thread). +we are seeing EGR technology since BS-III era in our cars but can any-one explain what is SCR (selective catalytic reduction)? Is it implemented in any indian vehicle? | ||
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30th April 2017, 07:05 | #4 | ||
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| re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
http://www.dieselforum.org/about-cle...el/what-is-scr Quote:
Last edited by a4anurag : 30th April 2017 at 07:07. | ||
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1st May 2017, 09:33 | #5 | |
Team-BHP Support | re: BS-IV engines with EGR & SCR in Commercial Vehicles Likewise with Tata Motors. Sharing from the Press Release: Quote:
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1st May 2017, 10:37 | #6 | |
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| Re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
SCR is the third stage in Diesel exhaust gas treatment. 1st one being an oxidation catalytic converter, 2nd being DPF or diesel particulate filter which traps soot and 3rd comes SCR. Here most Diesel vehicles are still in stage 1. IIRC no Diesel passenger vehicle has SCR implemented in it yet. With implementation of Bharat 6 in 2020 (6 years behind Euro6) we can expect this to change. | |
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1st May 2017, 11:11 | #7 | ||
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| Re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
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When it comes to marketing, AL was in the forefront with M S Dhoni as its ambassador even before TaMo and MBTL came up with those celebrities. And finally whats interesting about iEGR is that, when usual EGR recirculates 20-30% of exhaust gas depending upon conditions, AL claims to have achieved this with 10-12% re-circulation. This is significant, when we consider the fact that it will not affect the engine life badly unlike what is being propagated by SCR using competition. Interestingly, with Eicher also coming the EGR way with their Pro5000 (VE-i3EGR) series, TaMo will not be left behind, expect they too will follow. | ||
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1st May 2017, 20:21 | #8 | ||||
Senior - BHPian | Re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
Quote:
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So underlining fact is neither of the celebrities bring sales, rather its more of brand building and that's what Ashok Leyland established with MSD four year back. Quote:
EGR in cars can't be compared with Commercial vehicles directly. In case of CV's, even if an engine fails at 4lks it will be considered as a 'Low Life". It was told that EGR will have lesser engine lift as against SCR based trucks. But again AL has worked on a different strategy to recirculate exhaust gas than what its done traditionally. So that's the reason, they claim their i-EGR better than regular than EGR. Also EGR is little tricky and not every engine responds positively. Tata 697 engine with EGR is running with MTC for 3 years and the performance isn't satisfactory. So even if a manufacturer wanted to go for EGR its a compromise, but Ashok Leyland has claimed that they have overcome these issues. We don't have any field record as of now and we will need to wait for an year to get partial feedback and 3 yrs to get full details. But honestly I am very much excited and if it clicks they will take the market share to next level in next 3 years, like how they got differentiated with inline pump in past. This video will help to understand EGR and SCR better. And more details here : 6 Facts that differentiates i-EGR from EGR and SCR/ Last edited by Ashley2 : 1st May 2017 at 20:37. | ||||
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2nd May 2017, 17:35 | #9 |
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| Re: BS-IV engines with EGR & SCR in Commercial Vehicles In Qatar, there are lot of used trucks imported from European countries which are Eurov and EuroVI. The Mercedes Benz actros trucks have a special tank for Adblue fluid. To be honest I don't see a single truck with a non-empty tank and they run perfectly fine. So my point is even if the OEM implement an SCR system, if the customer doesn't refill the tank, the system will be as good as dead. Same fate is also for the EGR system. If the customer un plug the EGR actuator nothing will happen and trucks run fine with more emission. So the government should make it mandatory that all on-road vehicles should have an electronic controlled fuel injection and emission testing should be carried out periodically. |
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3rd May 2017, 00:32 | #11 | |
Senior - BHPian | Re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
Last edited by Aditya : 3rd May 2017 at 16:08. Reason: As requested | |
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3rd May 2017, 00:59 | #12 | |
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| Re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
1. For the SCR system, unless there's a remap done to the engine ECU, the engine's output will be limited and it will enter a Limp mode when the AdBlue tank is empty. So, either they've done something or the AdBlue tank is not empty. 2. It is not so easy to just unplug the EGR valve actuator and keep running normally. There will be a CEL (Check Engine Light) and it has to be taken care of before the engine can run at normal power output. But, I don't see the need to do fiddle with the EGR system unless the drivers are trying to clock quarter-mile times. If you are talking about the erstwhile Mahindra-Navistar trucks, that are now sold as Mahindra trucks, then I assume they are using EGR tech - their website claims they are meeting BS-4 norms without after-treatment. Their ex- technology partner, Navistar Inc. uses SCR technology to meet Euro-5 norms. I do not know what their strategy is for E-6 and equivalent. Last edited by silversteed : 3rd May 2017 at 01:04. | |
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3rd May 2017, 20:48 | #13 |
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18th July 2019, 10:02 | #14 | ||
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| Re: BS-IV engines with EGR & SCR in Commercial Vehicles Quote:
What are DEF and SCR you ask? Here's an article from the American perspective. Source: https://www.cnet.com/roadshow/news/d...-urea-scr-egr/ Quote:
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