Multi-Waterway Control Valve (MCV)

The MCV is a valve for switching cooling water channels that Hitachi Automotive Systems has developed to improve fuel efficiency.
It works by promoting early combustion chamber warm-up and reducing mechanical friction. It achieves these benefits by switching the cooling water channels in response to the driving conditions (engine speed, load, water temperature, and outside air temperature), to control the temperature of each unit (thermal management). The use of a double worm mechanism layout with smaller actuators enables MCV installation in current engine layouts, and has resulted in a new order.
Hitachi Automotive Systems is planning to study the proposed use of MCV in combination with cooling systems that can improve fuel efficiency through thermal management in ICEs, hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs) and EVs.

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