VCR Actuation System

Hitachi Automotive Systems

Picture

VCR actuator

VCR (​Variable Compression Ratio)
Slim brushless motor
Harmonic Drive reduction gear
Picture

VCR control module

Picture

CAN communication

As use of VCR makes it possible to achieve both the fuel economy of a naturally aspirated engine and the output of a turbocharged engine, the technique is extremely useful when turbocharging is used to downsize engines for higher efficiency.

Leave a Reply