Atkinson cycle
The 8GR-FXS is a version. Bore and stroke is with a compression ratio of 13.0:1. Used in Hybrid applications, and including on-demand Atkinson cycle, engine output is at 6,600 RPM and at 5,100 RPM. The 8GR-FXS uses a similar fuel setup to the 2GR-FKS, combining the D-4S system and the simulated on-demand Atkinson cycle used in the 2UR-GSE and 8AR-FTS engines. The intake camshafts are equipped with VVT-iW and the exhaust camshafts are equipped with VVT-i.