Dieselgate scandal Final (Schreibgeschützt) · Volkswagen Diesel Scandal 1974 Volkswagen paid fine...
Transcript of Dieselgate scandal Final (Schreibgeschützt) · Volkswagen Diesel Scandal 1974 Volkswagen paid fine...
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Diesel gate
Ashesh Chakraborty
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Background
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• Volkswagen, headquartered in Wolfsburg, Germany isone of the most iconic automobile manufacturers in theworld.
• It was founded by the German Labour Front in the year1937.
• It operates more than 60 production plants around theworld
• Volkswagen (10.1 million units sold) was the 2ndbiggest car manufacturer after Toyota (10.2 millionunits sold) in 2014
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Volkswagen Diesel Scandal
1974Volkswagen paid fine of $120,000 over the use of “defeat devices”
2009Volkswagen installed softwares to
circumvent emissions test
September 2015US EPA accused Volkswagen for
using defeat devices or softwares in the diesel engines
9.7 billion dollars fine paid in the US against diesel gate scandal
https://www.businessinsider.com.au/chart-this-is-what-happened-to-volkswagen-after-the-emissions-scandal-2015-12
https://www.cleanenergywire.org/factsheets/dieselgate-timeline-germanys-car-emissions-fraud-scandal
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How the defeat device work?
https://www.statista.com/statistics/272053/operating-profit-of-volkswagen-since-2006/
Increased release of Nitrogen oxides
Pollutant related to cause emphysema, bronchitis and other respiratory diseases
System for trapping nitrogen oxidesthereby reducing toxic emissions
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Causes of the scandal
• To overcome fundamental problems for controllingharmful emissions by it’s smaller diesel cars
• Inadequate internal controls
• Ambitious goals
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Consequences of the scandal
• Total of 11 million cars affected worldwide out of which 500,000 cars in US and 7 million cars in Europe
• Engines emitted nitrogen oxide pollutants up to 40 times above what is permitted in the US that may result in 1 million tonnes of air pollution every year
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https://www.downtoearth.org.in/coverage/air/does-volkswagen-fraud-signal-death-of-diesel--51539
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Regulatory limits of Nitrogen Oxides
EU standard limit forNitrogen oxides emissions
0.08 g/Km
US Standard limit forNitrogen Oxides
emissions0.04 g/Km
EU‘s response to dieselgate scandal, February 2019
https://www.nytimes.com/interactive/2015/business/international/vw-diesel-emissions-scandal-explained.html
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EU‘s response to dieselgate scandal, February 2019
EU‘s response to dieselgate scandal, February 2019
• VW cars withdrawn for NitrogenOxide emission test as ofSeptember 14,2018 in EU.
• Regulations strengthen to ensurethe vehicles introduced to themarket meet emissions limit.
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• Particulate matter (PM): – Diesel Exhaust – Polycyclic aromatic hydrocarbons (PAH’s) – Carbon Nanoparticles
• Gases – Nitrogen dioxide – Sulphur dioxide – carbon monooxide
• Air pollution broad spectrum of healtheffects such as asthma, COPD andcardiovascular morbidities.
• Particulate matter (PM) , gases or evena combination of both.
Air Pollution
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• Interaction with the lung lining fluid
containing antioxidants à Radical
generation àdepletion of the
antioxidant defense.
• Initiation of cellular responses
àRelease of cytokines and tight
junction modification
Romieu, I., Castro-Giner, F., Kunzli, N., & Sunyer, J. (2008). Air pollution, oxidative stress and dietary supplementation: a review. European Respiratory Journal, 31(1), 179-197. doi: 10.1183/09031936.00128106
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In-vitro study
• Air-Liquid Interface (ALI) Cell culturewith Primary Bronchial Epithelial cells(Pbec‘s)
• Diesel Exhaust Particles (12.7 µg/cm2) exposed to ALI culture
• Co-culture of Pbec‘s with macrophage
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Macrophage Polarization
Saradna, A., Do, D., Kumar, S., Fu, Q., & Gao, P. (2018). Macrophage polarization andallergic asthma. Translational Research, 191, 1-14. doi: 10.1016/j.trsl.2017.09.002
• Important role in host defense
• M1 Phenotype : Classical Activatedmacrophage
• M2 phenotype: Alternative activatedmacrophage
• M1 pehnotype: Induced by Helper T cell(Th1) responseà TNf-α, IFN-γ, NFKB
• M2 phenotype: Induced by Th2 response àMRC-1, IL10 à wound healing and tissueregeneration
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Inflammation
• Increase in pro-inflammatory and cytokine levelsafter Diesel Exhaust particles exposure
• Macrophage polarization towards M2 Phenotype
CXCL-8 IL-4
CXCL-8 IL-4 TNF-α
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Tissue Injury Markers
• Increase in tissue injury markers after Diesel Exhaust Particlesexposure.
• Macrophage Polarization towards M2 Phenotype
MMP-9
MMP-9
TIMP-1
TIMP-1
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