Toyota RI4AG engine
The Toyota RI4A/RI4AG is a prototype four-stroke 2.0-litre single-turbocharged inline-4 racing engine, developed and produced by Toyota, for the Super GT series and the Japanese Super Formula series. The RI4AG engine is fully custom-built.[1][2]
| Toyota RI4A/RI4AG | |
|---|---|
| Overview | |
| Manufacturer | Toyota Gazoo Racing |
| Production | 2014-present |
| Layout | |
| Configuration | Inline-4 |
| Displacement | 2.0 L (122 cu in) |
| 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) |
| Block material | Die cast steel or aluminium alloy. Machining process from a solid is not permitted |
| 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 | Various (102 RON unleaded racing gasoline) |
| Oil system | Dry sump |
| Cooling system | Single mechanical water pump feeding a single-sided cooling system |
| Output | |
| Power output | 550–650 PS (542–641 hp; 405–478 kW) |
| Torque output | 500–700 N⋅m (370–520 lbf⋅ft) |
| 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 |
References
- "Toyota GR Supra GT500 Racecar Sounds Insane Testing for the 2020 Super GT Series". 28 December 2019.
- "The Four-Cylinder 2020 Supra Super GT Car Sounds Bizarre". 27 September 2019.
- "A GT500 Racer in Detail". 26 May 2015.
- "2014 Lexus RC F GT500 | Lexus". 22 April 2016.
- https://www.topgear.com/car-news/motorsport/dear-lord-it%E2%80%99s-lexus-rc-f-gt500
- "GR Supra | GR Supra".
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