In a bold move that's sending shockwaves through the automotive industry, Audi has unveiled its groundbreaking MHEV Plus system, a technological marvel that promises to breathe new life into combustion engines. This innovative approach comes at a time when many automakers are shifting their focus entirely to electric vehicles, making Audi's decision to invest in advanced combustion technology both daring and potentially game-changing.
The Heart of Innovation: Premium Platform Combustion (PPC)
At the core of Audi's strategy is the new Premium Platform Combustion (PPC) architecture. This versatile platform is set to underpin a wide range of vehicles, from the sleek A5 to the robust Q7 replacement. What sets PPC apart is its exclusivity to Audi, featuring longitudinally mounted engines that distinguish it from other Volkswagen Group platforms.
MHEV Plus: More Than Just a Mild Hybrid
The star of the show is undoubtedly the MHEV Plus system, a 48-volt mild hybrid technology that pushes the boundaries of what's possible with combustion engines. Here's what makes it stand out:
- Dual Electric Motor Setup: Unlike conventional mild hybrids, MHEV Plus employs two electric motors - a belt-driven starter generator on the engine and a unique 'drivetrain generator' on the gearbox.
- Powerful Battery: The system boasts a substantial 1.76kWh battery pack, dwarfing competitors like the Ford Puma MHEV's 0.38kWh battery.
- Efficient Energy Harvesting: The drivetrain generator excels at capturing energy during deceleration, utilising the entire vehicle's mass for improved efficiency.
- Impressive Performance Boost: When needed, MHEV Plus can deliver an additional 24bhp, enhancing acceleration and overall performance.
Environmental Impact and Efficiency Gains
Audi's commitment to sustainability is evident in the MHEV Plus system's environmental benefits:
- CO2 Reduction: The system cuts CO2 emissions by 10g/km for the new 2.0-litre diesel engine and an impressive 17g/km for the 3.0-litre V6 in S-badged models.
- Fuel Efficiency: While final figures are pending, Audi reports fuel savings of 0.38 litres per 100km for diesel engines and 0.74 litres per 100km for V6 engines.
- Electric-Only Operation: The A5 can run solely on electric power at speeds up to 18mph, ideal for urban environments.
- High-Speed Efficiency: MHEV Plus assists combustion engines at speeds up to 87mph, optimising fuel consumption even on highways.
Comparisons and Industry Context
To put Audi's innovation in perspective, let's compare it with other hybrid systems:
- Toyota's Hybrid Synergy Drive: While Toyota's system has been a market leader, it typically uses smaller batteries (1.3-1.6kWh in the Prius) compared to Audi's 1.76kWh pack.
- Honda's i-MMD: Honda's system in the CR-V Hybrid uses a 1.4kWh battery, still falling short of Audi's capacity.
- Mercedes-Bens EQ Boost: This 48V system, used in models like the E-Class, offers a power boost of up to 21hp, slightly less than Audi's 24bhp.
Future Implications
Audi's investment in MHEV Plus technology signals a strategic approach to navigating the transition period leading up to potential combustion engine bans. Kerstin Englhardt, PPC architecture project leader, expressed confidence that petrol and diesel engines will remain relevant in Audi's lineup until regulatory changes force a shift.
This technology could potentially extend the lifespan of combustion engines beyond the proposed 2035 EU ban, especially if it continues to demonstrate significant improvements in efficiency and emissions reduction.
Conclusion
Audi's MHEV Plus system represents a significant leap forward in hybrid technology. By combining the best aspects of mild hybrid systems with more powerful components, Audi has created a solution that could redefine the future of combustion engines. As the automotive world races towards electrification, Audi's innovative approach offers a compelling alternative, potentially extending the relevance of traditional powertrains while significantly reducing their environmental impact.
As we await final performance figures and real-world testing, one thing is clear: Audi's MHEV Plus is set to make waves in the automotive industry, challenging preconceptions about the future of combustion engines in an increasingly electric world.
