What is a BS6 Engine & How BS6 Engines work, BS4 Vs BS6

The introduction of BS6 engines has brought a major shift to the automobile industry in India, replacing the older BS4 engines. If you're considering purchasing a new vehicle, particularly a two-wheeler, it's crucial to understand what is a BS6 engine, how it functions, and the key differences between BS4 and BS6. The shift from BS4 to BS6 was driven by environmental concerns with the government implementing stricter emission norms under the BS6 (full form - Bharat Stage 6) regulations. These new standards have impacted engine design and functionality, resulting in cleaner and more efficient vehicles. Understanding the BS4 and BS6 difference is important not only for vehicle performance but also for the financial considerations involved when purchasing a BS6 vehicle.

What is BS in a Bike?

The full form of BS in a bike is Bharat Stage. BS emission standards are a set of regulations that control the amount of air pollutants emitted from a vehicle's tailpipe. These standards aim to reduce pollution and improve air quality by setting limits on the emission of harmful gases like carbon monoxide, nitrogen oxides, and particulate matter from vehicles.

What is a BS4 Vehicle?

A BS4 vehicle refers to any automobile that complies with the BS4 emission norms, which were the standard before BS6 was introduced. While BS4 bikes were more affordable, they emitted higher levels of pollutants, contributing to air pollution in urban areas.

What is BS6 Engine?

A BS6, meaning Bharat Stage 6, engine is designed to meet stricter emissions standards, ensuring vehicles are cleaner and more eco-friendly. By adhering to these advanced regulations, BS6 vehicles aim to reduce the levels of harmful pollutants drastically, helping to combat air pollution and improve environmental sustainability.

How BS6 Engines Work?

To comply with BS6 norms, manufacturers have made several key modifications to engine designs. Here's how BS6 engines work:

• Advanced Catalytic Converters: BS6 engines feature advanced catalytic converters that break down pollutants like nitrogen oxides into nitrogen and oxygen, significantly reducing harmful emissions.
• Diesel Particulate Filters (DPF): BS6 diesel engines are equipped with DPFs, which trap and store exhaust soot to reduce particulate emissions.
• Selective Catalytic Reduction (SCR): SCR technology injects AdBlue (a urea-based solution) into the exhaust system to convert nitrogen oxides into nitrogen and water.
• On-board Diagnostics (OBD): BS6 engines include OBD systems that monitor emission-related components to ensure compliance with emission standards over the vehicle’s lifetime.
• Additional Emission Control Technologies: These engines also feature a second catalytic converter and a complex exhaust gas recirculation system to further reduce emissions and enhance engine efficiency.

Together, these systems work to drastically reduce harmful emissions compared to the previous BS4 standards, improving both air quality and engine performance. Must Read: What Does CC Mean In A Bike

Difference Between BS4 vs BS6

The difference between BS4 and BS6 engines is substantial, particularly in terms of pollution control and engine technology. The shift from BS4 to BS6 has resulted in more efficient and environmentally friendly engines, making BS6 engines essential in today’s world. Here’s a BS4 vs BS6 comparison: Aspect BS4 BS6 Emission Standards – Emitted higher levels of pollutants such as nitrogen oxides (NOx), particulate matter (PM), and hydrocarbons. – Significantly reduced emissions, with nitrogen oxide emissions from diesel engines reduced by almost 70% compared to BS4. Fuel Quality – Contained higher sulphur content, around 50 ppm (parts per million). – Reduced sulphur content to 10 ppm, making it cleaner and less polluting. Requires BS6 fuel for optimal performance. Engine Performance – Efficient but lacked advanced emission control mechanisms. – Equipped with advanced technologies like SCR (Selective Catalytic Reduction), DPF (Diesel Particulate Filter), and OBD (On-Board Diagnostics) systems, leading to more efficient and cleaner combustion. Mileage – Known for better mileage due to fewer emission control mechanisms. – Slightly reduced mileage due to complex emission control systems, but benefits include significantly reduced pollution. Maintenance – Simpler engines with fewer emission control components, resulting in less expensive maintenance. – More frequent maintenance may be required due to advanced technologies like catalytic converters and DPF. Higher-grade lubricants may also be necessary. With these key differences in mind, it's clear that switching to BS6 is a step toward cleaner, greener transportation. Must Read:– KTM Bikes Price List 2025 – KTM New Models, Images & Specs

Impact of BS6 on Two-Wheelers

The impact of BS6 on two-wheelers is significant, as it introduces stricter emission standards for motorcycles and scooters. BS6 bikes come equipped with advanced technologies like electronic fuel injection (EFI) systems, replacing the carburettors found in BS4 bikes. This shift improves fuel efficiency, reduces emissions, and ensures cleaner air. The transition to BS6 makes two-wheelers more environmentally friendly, aligning with global efforts to reduce pollution and meet higher sustainability standards in the automotive industry.

Financing Options for a BS6 Vehicle

If you're planning to buy a BS6 bike, it's essential to consider the cost, as these vehicles may be priced slightly higher due to advanced technology. However, the benefits of lower emissions and more efficient engines make them a worthwhile investment.  Bike finance options, such as those offered by Muthoot Capital, can help make owning a BS6 bike more affordable. Before applying, use the Two-Wheeler Loan Calculator to estimate your EMI and compare loan tenures, ensuring you choose one that fits your budget.

Conclusion

The shift from BS4 to BS6 engines marks a significant advancement in reducing vehicle emissions and improving air quality. BS6 engines incorporate advanced technologies that enhance fuel efficiency and reduce harmful pollutants, making them more eco-friendly. While BS6 vehicles may come at a higher cost, their long-term environmental benefits and improved performance make them a worthwhile investment. Financing options, like bike loans from Muthoot Capital, can help make these vehicles more accessible.

FAQs

What is the Full Form of BS6?

The full form of BS6 is Bharat Stage 6.

What is the Full Form of BS4?

The full form of BS4 is Bharat Stage 4.

How does a BS6 engine work?

A BS6 engine works by using advanced fuel injection systems, better exhaust treatment, and improved catalytic converters to ensure reduced emissions compared to the older BS4 engines.

What is the difference between BS4 and BS6?

The difference between BS4 and BS6 lies primarily in emission norms. BS6 engines are designed to emit fewer pollutants like carbon monoxide, nitrogen oxides, and particulate matter compared to BS4 engines.

Can I still buy a BS4 vehicle in India?

No, as of April 2020, the sale and manufacture of BS4 vehicles have been prohibited in India, and only BS6-compliant vehicles are available in the market.

What is BS4 and BS6 in bikes?

BS4 and BS6 in bikes refer to the emission standards set for two-wheelers. BS6 bikes are more eco-friendly and efficient than BS4 bikes, as they comply with stricter environmental norms.

Is a BS6 engine more expensive than a BS4?

Yes, BS6 engines are generally more expensive than BS4 engines due to the advanced technology and components required to meet the stricter emission standards.

Which is better, BS4 or BS6?

BS6 is better than BS4 due to its lower emission levels and better environmental impact. It is designed to reduce air pollution, making it a greener choice for consumers.