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All of Toyota TS050 Hybrid magazine's report
*Engine (2016 spec)
-TS050 engine (2.4l,V6) development began in January 2015.
-The reason for switching to turbo engine is that it is easy to adjust to changes in weather conditions and that the friction is low due to the low rotational speed.
-The reason for choosing V6 is that it is easy to make a stress mount.
-2.4 liter displacement was determined from an efficiency standpoint.
-6-cylinder was decided to distribute the load and to differentiate from Porsche.
-Prototype production period is 8 months, first burning is October 2015.
-Because the development period was short, the development knowledge of RI4A(SGT/SF engine) was used.
*Engine (2017 spec)
-2017 spec TS050 engine is completely different from 2016 spec.
-In order to improve performance, the length of the engine has been extended.
-Since the width of the bearing was expanded, the total length became longer.
-Initially, the displacement was reduced from 2.4 liters to 2.1 liters.
-This is due to the simulation results that reducing the displacement reduces the friction, allows the turbo to be used in the high-efficiency region, improves intake and exhaust losses, and increases the total output.
-It was March 2016 that Toyota decided to reduce the displacement.
-However, the knocking problem cannot be solved, and the displacement is returned to 2.4 liters in November.30.2016.
-Instead, a new combustion concept (pre-chamber) was introduced.
-In 2017 specs, alternator was abolished and switched to DC-DC converter (815V to 12V, Made by Magneti Marelli).
-The DC-DC converter is half the weight of the alternator.
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