A Method 1 automobile with all-wheel drive or powered by a two-stroke engine. What could sound like science fiction had been really severe proposals for the 2026 rules. Technological limitations and the pursuits of particular person producers in the end led to an evolution of the present energy models, however the vehicles debuting subsequent yr might have been very completely different from what the general public is used to. Right here’s how.
The 2-stroke thought
In 2020, Pat Symonds, then Method 1’s technical director, spoke at a Motorsport Trade Affiliation convention in regards to the ongoing work on new rules: “We have to begin taking a look at what our future energy models will likely be like. […] I’m very excited that we’re engaged on the concept of a two-stroke engine, which is presently rather more environment friendly, has fewer points than previously, and might ship an awesome sound.”
In a two-stroke engine, the consumption, compression, combustion, growth, and exhaust phases of the air-fuel combination are accomplished in a single engine rotation, not like the 2 rotations required in a four-stroke engine. The consumption and exhaust fluid frequencies match the engine’s, permitting the method to be managed by means of ports opened and closed by the pistons themselves, eliminating the necessity for distribution parts corresponding to valves and camshafts.
With the identical displacement, a two-stroke engine has the potential to provide larger torque and energy. Nonetheless, over time, four-stroke know-how has prevailed resulting from higher effectivity and decrease gas consumption. Method 1 was optimistic about closing this hole because of advances in supplies, which at the moment are extra resistant, and digital CFD simulations. Mixed with new direct injection methods, these developments might have optimized fluid dynamics and maximized cylinder quantity utilization whereas finishing the complete combustion cycle in a single engine rotation as a substitute of two.
Opposed-piston engines
The 2-stroke undertaking went even additional, embracing the concept of an opposed-piston engine. This design options two pistons per cylinder, dealing with one another and shifting towards and away from each other throughout operation. This structure improves vitality conversion from combustion into helpful work by stopping warmth loss by means of the ceiling of a conventional combustion chamber, which is changed by the second piston. In line with SAE (the Society of Automotive Engineers), on the time, two-stroke opposed-piston engines promised an effectivity of 55%, surpassing the 50% effectivity of present energy models.
Listening to Pat Symonds, making use of this know-how in Method 1 was greater than only a suggestion: “The idea of an opposed-piston engine is making a comeback and is already being utilized in some street fashions with an effectivity of round 50%. Direct injection, pressurized cost, and new ignition techniques have made fashionable two-stroke engines extremely environment friendly and compliant with present emissions rules. I believe they’ve a superb future.” Nonetheless, these phrases didn’t result in additional developments.
All-wheel drive
In the end, the choice was made to proceed with conventional four-stroke know-how, focusing as a substitute on revising the hybrid system. The MGU-H, the electrical generator coupled with the turbo, was eliminated for value causes and to accommodate new producers—particularly Audi and Porsche—who had been cautious of their technological drawback in comparison with current rivals. This choice, later confirmed within the closing rules, disadvantaged energy models of a helpful supply of vitality for battery recharging, simply as hybrid energy was set to extend from 120 to 350 kW.
To compensate, one proposal concerned including one other electrical generator to recuperate braking vitality, doubling the present MGU-Okay. Nonetheless, this second unit would have been put in on the entrance axle, much like fashionable Method E vehicles, and will have been activated throughout acceleration, successfully creating an all-wheel-drive Method 1 automobile. “It’s an choice to think about,” commented then-Ferrari Workforce Principal Mattia Binotto.
Nonetheless, some current producers feared that newcomers Porsche and Audi may need a bonus on this space, regardless of plans to standardize the second motor-generator for all groups. An excellent larger impediment was the added weight: the electrical motor, drive shafts, extra parts, and chassis modifications would have elevated the automobile’s weight by a minimum of 30 kg. Because of this, the choice was made to proceed with a single, extra highly effective MGU-Okay whereas creating a extra environment friendly automobile physique and utilizing energetic aerodynamics to cut back drag and gas consumption, compensating for the removing of the MGU-H.
The transverse engine
One other proposal for 2026 concerned additional downsizing the inner combustion engine. The brand new vehicles would have adopted compact four-cylinder engines, permitting them to be mounted transversely moderately than longitudinally. This setup would have shortened the wheelbase by 40 cm, resulting in important weight financial savings. Nonetheless, the choice was in the end made to evolve the present V6 engines, each to capitalize on improvement since 2014 and for higher engine sound.
The ultimate model of the rules nonetheless faces skepticism from a big portion of followers, however one wonders what the response would have been if Method 1 had absolutely pursued any of the choice concepts on the desk.
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