The Toyota RI is a family of prototype
four-stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...
2.0-litre single-
turbocharged
inline-4 racing
In sports, racing is a competition of speed, in which competitors try to complete a given task in the shortest amount of time. Typically this involves traversing some distance, but it can be any other task involving speed to reach a specific g ...
engine
An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy.
Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power ge ...
s, developed and produced by
Toyota
is a Japanese Multinational corporation, multinational Automotive industry, automotive manufacturer headquartered in Toyota City, Aichi, Japan. It was founded by Kiichiro Toyoda and incorporated on August 28, 1937. Toyota is the List of manuf ...
, for the
Super GT series and
Super Formula
The Japanese Super Formula Championship is a formula racing series held primarily in Japan. It is considered to be the pinnacle of single-seater racing in Japan or Asia as a whole, making it one of the top motorsport series in the region. The s ...
under the Nippon Race Engine framework. The RI engine is fully custom-built.
Versions
The RI engine comes in two different versions for different applications; the RI4A for use in Super Formula and the RI4AG for use in Super GT.
*RI4A (2014–present, also known as TRD-01F)
*RI4AG (2014–2023)
*RI4BG (2024-present)
Applications
*
Dallara SF14
*
Dallara SF19
*
Dallara SF23
The Dallara SF23 is an open-wheel single-seater chassis produced by Dallara for use in the Japanese Super Formula Championship. It debuted in 2023 Super Formula Championship, 2023, replacing the Dallara SF19 chassis as the main chassis used in ...
*
Lexus RC F GT500
*
Lexus LC 500 GT500
*
Toyota GR Supra GT500
See also
*
Honda HR-414E/HR-417E/HR-420E engine, similar engines also developed under the Nippon Race Engine framework
*
Nissan NR engine, similar engine also developed under the Nippon Race Engine framework
References
{{Reflist
Engines by model
Gasoline engines by model
Toyota engines
Four-cylinder engines
Straight-four engines
Toyota in motorsport