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1. (WO2017179392) VALVE BODY, ELECTRONICALLY CONTROLLED THROTTLE BODY, MOTOR-DRIVEN THROTTLE BODY, AND VALVE DEVICE

Pub. No.:    WO/2017/179392    International Application No.:    PCT/JP2017/011905
Publication Date: Fri Oct 20 01:59:59 CEST 2017 International Filing Date: Sat Mar 25 00:59:59 CET 2017
IPC: F02D 9/10
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: HATSUZAWA Hidefumi
初沢 英文
KAWANO Makoto
河野 誠
HORI Toshio
堀 俊夫
NEMOTO Toyoshi
根本 豊至
Title: VALVE BODY, ELECTRONICALLY CONTROLLED THROTTLE BODY, MOTOR-DRIVEN THROTTLE BODY, AND VALVE DEVICE
Abstract:
The purpose of the present invention is to provide a device capable of appropriately cooling a bearing in a throttle body even under the condition in which the throttle body is subjected to the heat of high-temperature intake air and exhaust gas. The present invention is configured such that an engine coolant passage for conducting an engine coolant is provided adjacent to the peripheral wall of a bearing which rotatably supports a throttle shaft and which is affixed to a member, and the engine coolant passage is integrally formed in the member to which the bearing is affixed. Heat transmitted from the bearing (or transmitted to the bearing) through the member to which the bearing is affixed is carried to the outside of the throttle body by the engine coolant.