发明名称 |
FLUID CONTROL VALVE FOR INTERNAL COMBUSTION ENGINE |
摘要 |
PROBLEM TO BE SOLVED: To provide a fluid control valve for an internal combustion engine that does not require a temperature correction. SOLUTION: This fluid control valve comprises a servomechanism adapted to drive axially a shaft 3 with a valve element 4 mounted thereon by a control pressure acting on a diaphragm 10. A stepping motor SM controls a position of the valve element 4. The stepping motor SM is driven by a pulse signal from a control unit 20. Even when a coil resistance is changed by temperature, a controlled volume of a rotator at one step of the stepping motor SM does not change, therefore a shaft 13 is not influenced by a change in temperature resistance of a coil. |
申请公布号 |
JP2002138927(A) |
申请公布日期 |
2002.05.17 |
申请号 |
JP20000333464 |
申请日期 |
2000.10.31 |
申请人 |
HITACHI LTD;HITACHI CAR ENG CO LTD |
发明人 |
WATANABE KENJI;SAEKI HIROAKI |
分类号 |
F02M69/32 |
主分类号 |
F02M69/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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