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You are here: Home1 / Comparison between BSIV (BS4) and BSVI (BS6) school bus2 / Blog3 / Uncategorized4 / Comparison between BSIV (BS4) and BSVI (BS6) school bus

Comparison between BSIV (BS4) and BSVI (BS6) school bus

Increasing contamination or pollution has become a significant setback today, where emission from vehicles has become a major issue. The issue has not only created a chaotic circumstance but has arrived at catastrophic extents.

In 2000 BSES (Bharat Stage Emission Standards) first emission guidelines were executed to control the harmful gasses emitted or radiated from the exhaust of the vehicle. Since the emission standards have made considerable progress through BS4 to forthcoming most recent BS6 standards which are even cleaner.

BS4 standards were enforced in 2017. However, considering the increasing need to make emission norms stricter, the government has decided to imply BS6 norms directly, skipping BS5 in the process with the result that the Government of India was compelled to embrace stringent measures between alia by presenting and declaring the obligatory conditions that each and every newly manufactured vehicle should fulfill and follow Bharat Stage (BS) 6 Norms in April 2020.

BSVI emission standard reduces harmful Hydrocarbon, Nitrogen Oxides and, Particulate Matter significantly from BSIV thus improving AQI and paving the way for a GREENER FUTURE and ensuring long-term environmental sustainability. One of the consequences of this strategy was the compulsory prerequisite of acquiring a Certification affirming that every single vehicle on the road was free of pollution liberated from contamination-producing substances and gases.

Technologies used for emission control
TechnologyEmission ImpactSignificance
Diesel Oxidation Catalyst (DOC)High reduction of HC/CO emissions, small to moderate PM conversion. The oxidation of NO to NO2 enhances the performance of SCR/DPF systems.Widely used on Euro 2/3 cars and on some US1994 and later heavy and medium-duty diesel engines. In modern engines, used as an auxiliary catalyst in SCR/DPF after treatment systems (NO2 generation, ammonia slip control).
Partical Oxidation CatalystUp to ~50% PM emission reductionLimited commercial application in selected (EGR-equipped) ERO IV heavy-duty truck engines, as well as in some light-duty and nonroad engines.
Diesel particulate filters (DPF)90%+ PM emission reductionMainstream technology used on all Euro 5 and US Tier 2 and later light-duty diesels; in all US2007 and Euro VI and later heavy-duty engines; in all Stage V non-road engines; in retrofit programs worldwide.
Urea-SCR catalysts90%+ NOx reductionMainstream technology used in US2010, Euro V and later heavy-duty engines; in US Tier 2 and Euro 5/6 and later light-duty diesel vehicles; in nonroad, marine, and stationary engines
NOx adsorbed catalystsUp to ~70-90% NOx reduction, depends on the drive cycle Used as a stand-alone NOx reduction catalyst in some US Tier 2 and Euro 5/6 light-duty vehicles. Used as a cold-start NOx reduction catalyst on some Euro 6 Vehicles with SCR
Lean NOx catalyst (HC-SCR)NOx reduction potential of ~10-20% in passive systems, up to 50% in active systemsLimited OEM and retrofit commercial application, mostly in 2000s

COMPARISION OF THE PERMISSIBLE EMISSION LEVELS OF BS6 VEHICLES COMPARED TO BS4 VEHICLES

BS NormsCO (Petrol) g/kmCO (Diesel) g/kmHC (Petrol) g/kmHC (Diesel) g/kmNOx (Petrol) g/kmNOx (Diesel) g/kmPM (Petrol)PM (Diesel)Sulpur content
BS IV10.50.10.250.080.3less than 250mg50 ppm
BS VI10.50.10.060.060.17less than
4.5mg/km
less than
4.5mg/km
10 ppm

Good air quality is principal to our prosperity or well-being. The presence of pollutants in this air can unfavorably affect individuals’ wellbeing. Vehicles, trucks, and transports controlled by petroleum products are significant contributors to air pollution. Truth be told, transportation releases the greater part of nitrogen oxides in our air, and is a significant source of global warming. Individuals with prior respiratory and heart conditions, diabetes, the young, and old aged individuals are especially at greater risk.

Studies have connected toxins, pollutants from vehicle fumes to unfavorable effects on essentially every organ system in the body. The rise in the contaminated air has become a significant mishap today, where emissions from vehicles have become a major issue. Clean vehicle and fuel technology can essentially lessen emissions from our vehicles and trucks, and help change transportation.

BS6 enginesare completely compliant with the BS4 vehicle’s, indeed it will make your vehicle more eco-friendly. The BS6 engine does that by having less content of sulfur. This in turn implies having a much cleaner fuel as it diminishesthe emission of harmful pollutants like carbon monoxide, nitrogen oxides ,and hydrocarbons,and Particulate Matter significantly from BSIV thus improving AQI and paving the way for a GREENER FUTURE and ensuring long term environmental sustainability.

If you are looking at it from the environment friendly point of view, then BS6 is absolutely the best option.

COMPARISION OF THE BS6 VEHICLES TO BS4 VEHICLES

Sl NoDescriptionBS6BS4
1Technology usedSelective catalytic reduction (SCR), Lean Nitrous Traps (LNT).selective catalytic reduction (SCR)
EGR (Exhaust Gas Recirculation)
2SensorsMap, oxygen, throttle position, engine oil temperature sensors, IAT, NOxOxygen sensor, Exhaust Gas Temperature Sensors.
Thermal Anemometer Air Flow Sensors.
Soot (PM) Sensors.
3FiltersDiesel particulate filter (DPF)
4Sulphur50 ppm10ppm
5Fuel Efficiency68% better fuel efficiencyLesser fuel efficiency
6Software presentReal Driving Emission (RDE), on board diagnostics
7PollutionDecreased pollutionIncrease pollution
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“ NVS builds the utmost confidence to handover the steering and focuses more and more on children’s education. Their innovative industry-first technology and implementation of Geo-based interactive transport opting portal help us at all levels. The Drivers and Care Takers are well trained. NVS Manages a Hassel free transport in both our location. Thank you for your service! ”

Mathew C CheriaAdministrator, The Brigade Foundation

“ Your care for our students and parents has been outstanding. Your amazing job has resulted in a reliable, safe & smooth School Bus Service. Also, implementation of hassle-free online transport opting and Payments Solutions have reduced the efforts of parents.

You just succeed every task coming your way. This helps me and my team focus on other activities. Thank you for all you do to keep it going! ”

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“ NVS Travel solutions stays true to its name – solution provider to us for our travel needs , you guys are prompt, well mannered drivers, neat good conditioned hygienic vehicles and professional. Uniqueness is flexibility, attending to last minute requests promptly and serving us in a timely manner and adding value by going the extra mile and taking care of our customers local travel as well.

Adding value by is keeping up with time, being punctual and making us feel secure by driving safe and secure.

I will definitely recommend NVS to others. ”

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“ This is to recognize NVS for quality management to the set expectations and its team for their efforts and contributions towards making our employee transport service successful. Pandemic situation is handled very well with all the unexpected plans and Ad Hoc requirements. We say we can rely on your team and the expertise for transport. ”

Raghavendra KManager HR & GA - YASKAWA India Pvt Ltd
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NVS offers more than a decade of school transport expertise with the experience of every situation. We operate with a team which is locally-hired and has complete knowledge of the ground. Our turn-key solutions can change the way your School bus service is managed. NVS will focus on safety driven transport operations while you focus on driving your students’ imagination. Contact NVS and simplify your school transport service.

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  • Technology vs Student Safety
  • BS4 (BSIV) vs BS6(BSVI) school bus
  • Importance of school transport for today’s education system
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