Audi RC8 2.0 TFSI engine

The Audi RC8 2.0 TFSI is a prototype four-stroke 2.0-litre single-turbocharged inline-4 gasoline racing engine, developed and produced by Audi Sport GmbH for Deutsche Tourenwagen Masters. The RC8 2.0 TFSI engine is full custom-built but partially borrows the cylinder blocks from Volkswagen-Audi EA888 2.0 R4 16v TSI/TFSI road car engine which had a same displacement. Audi RC8 2.0 TFSI was shakedown on 15 November 2018 and later made public unveil on 20 March 2019 after more engine dyno test.^[2] Audi RC8 TFSI is the first-ever turbocharged DTM engine to date, replacing the aging Audi DTM V8 engine after nineteen-years of service which conform the "Class 1" regulations that shared with Japanese Super GT under Nippon Race Engine (NRE) formula.

Audi RC8 2.0 TFSI
Overview
Manufacturer	Audi Sport GmbH
Production	2019-2020 (DTM)
Layout
Configuration	Inline-4 cylinder
Displacement	2.0 litres (122 cubic inches)
Cylinder bore	86–90 mm (3.39–3.54 in)
Piston stroke	Free but typically approximately between 86–90 mm (3.39–3.54 in)
Cylinder block material	Die cast steel or aluminium alloy. Machining process from a solid is not permitted
Cylinder head material	Die cast steel or aluminium alloy
Valvetrain	DOHC 16-valve (four-valves per cylinder)
Compression ratio	15:1
Combustion
Turbocharger	Single-turbocharged by Garrett Advancing Motion with 3.5 bar (51 psi) of turbo boost pressure
Fuel system	Bosch HDEV6 350 bar (5,076 psi) central high-pressure gasoline direct fuel injection. One direct injector per cylinder fed by an engine-driven high-pressure fuel pump
Management	Bosch Motronic MS 7.4
Fuel type	Aral Ultimate 102 RON unleaded racing gasoline
Oil system	Dry sump. Castrol EDGE SUPERCAR and Total Quartz (WRT)
Cooling system	Single mechanical water pump feeding a single-sided cooling system
Output
Power output	610 + 30 hp (455 + 22 kW) (2019) later 580 + 60 hp (433 + 45 kW) (2020-present)[1] including push-to-pass
Torque output	Approx. 650 N⋅m (479 ft⋅lbf) @ 9,000 rpm
Dimensions
Length	600 mm (23.62 in)
Width	697 mm (27.44 in)
Height	693 mm (27.28 in)
Dry weight	187 lb (85 kg) including turbocharger
Chronology
Predecessor	Audi DTM V8

Audi RS5 Turbo DTM

The RC8 2.0 TFSI engine also featuring push-to-pass system which produces 30 hp (22 kW) later 60 hp (45 kW) for more overtaking manoeuvre improvement.^[3]

Applications

• Audi RS5 Turbo DTM
• Audi RS Q e-tron (generator)