Audi details the 300ps 2.0-liter powertrain behind the SQ2

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German OEM Audi has detailed the 2.0-liter engine that will form the heart of the SQ2. Unveiled at the Paris Motor Show earlier this month, the SQ2 promises to develop 300ps and channel it through S sports suspension and Quattro all-wheel-drive.

The 2.0 TFSI unit, which has been developed by Audi engineers and built in Győr, Hungary, delivers 300ps and a constant 400Nm of torque between 2,000rpm and 5,200rpm. As a result, it can hit 100km/h in 4.8 seconds and reach a 155mph top speed. The four-cylinder, 1,984cc engine redlines at 6,500rpm. The unit itself weighs only 150kg, benefiting the axle load distribution.

Numerous other features hone the performance. The intake and exhaust camshafts are adjustable to optimize fill and gas exchange. On the exhaust side, the Audi valvelift system (AVS) adjusts valvelift in two stages based on demand – reducing flushing losses in the combustion chamber and ensuring optimal flow of exhaust gas to the turbocharger, particularly in the low RPM range.

Controlled by a fast and precise electric overflow valve, the turbocharger develops its maximum boost of 1.4 bar. This engine management system enhances efficiency and reduces fuel consumption during operation under part load.

Efficiency is also a major focal point with the TFSI engine. Two electrically powered rotary valves consolidated into a module regulate the coolant flows. A cylinder-head-integrated exhaust manifold helps the engine to warm up quickly.

Targeted measures implemented in many components increase strength and reduce internal friction. The regulated oil pump requires little drive energy. Under part load, the engine management system deactivates FSI direct fuel injection. Instead, fuel is injected indirectly into the intake manifold, which reduces particle emissions. A particle filter also cleans the exhaust gas.

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Sam joined the UKi Media & Events automotive team in 2017. Having started out as assistant editor for a number of titles including Engine + Powertrain Technology International, Automotive Testing Technology International and Professional Motorsport World, he was appointed editor of E+PTI in 2020. Sam produces content for both the magazine and website.

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