US2017089251A1PendingUtilityA1

Cooling control device

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Assignee: AISIN SEIKIPriority: Sep 30, 2015Filed: Sep 30, 2016Published: Mar 30, 2017
Est. expirySep 30, 2035(~9.2 yrs left)· nominal 20-yr term from priority
Inventors:Kazuyoshi ShimataniMasahiro YoshidaHirotaka WatanabeTatsuya Masuhisa
F01P 7/164F01P 7/14F01P 2025/30F01P 7/167F01P 2007/146F01P 2023/08F01P 7/16F01P 2025/08F01P 2025/64
34
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Claims

Abstract

A cooling control device includes: a cooling liquid pump whose rotational speed is set in accordance with a rotational speed of an engine; a cooling flow path and a heat exchanger which cool cooling liquid discharged from the engine; a flow rate control valve which is provided in the cooling flow path, changes an opening degree by driving a motor, and adjusts a flow rate of the cooling liquid; and a control portion which feedback-controls the opening degree of the flow rate control valve based on a difference between a temperature of the cooling liquid and a target temperature of the cooling liquid, and corrects a gain of the feedback control in accordance with the rotational speed of the engine.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A cooling control device comprising:
 a cooling liquid pump whose rotational speed is set in accordance with a rotational speed of an engine;   a cooling flow path and a heat exchanger which cool cooling liquid discharged from the engine;   a flow rate control valve which is provided in the cooling flow path, changes an opening degree by driving a motor, and adjusts a flow rate of the cooling liquid; and   a control portion which feedback-controls the opening degree of the flow rate control valve based on a difference between a temperature of the cooling liquid and a target temperature of the cooling liquid, and corrects a gain of the feedback control in accordance with the rotational speed of the engine.   
     
     
         2 . The cooling control device according to  claim 1 ,
 wherein the gain becomes different in accordance with an opening operation or a closing operation of the flow rate control valve.   
     
     
         3 . The cooling control device according to  claim 1 ,
 wherein the gain becomes different in accordance with the opening degree of the flow rate control valve.   
     
     
         4 . The cooling control device according to  claim 1 ,
 wherein the cooling liquid pump is a mechanical pump which is driven by the engine.

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