发明授权
- 专利标题： Air flow meter with compensation of second stage delay of thermal inertia
- 专利标题（中）： 空气流量计补偿第二级热惯性延迟
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申请号： US247505申请日： 1988-09-22
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公开(公告)号： US5036702A公开(公告)日： 1991-08-06
- 发明人: Masuo Akamatsu , Hiroatsu Tokuda , Izumi Watanabe , Hiroshi Yoneda
- 申请人： Masuo Akamatsu , Hiroatsu Tokuda , Izumi Watanabe , Hiroshi Yoneda
- 申请人地址： JPX Tokyo JPX Ibaraki
- 专利权人： Hitachi, Ltd.,Hitachi Automotive Engineering Co., Ltd.
- 当前专利权人： Hitachi, Ltd.,Hitachi Automotive Engineering Co., Ltd.
- 当前专利权人地址： JPX Tokyo JPX Ibaraki
- 优先权： JPX62-244096 19870930
- 主分类号： G01F1/68
- IPC分类号： G01F1/68 ; G01F1/698 ; G01P5/12
摘要：
A hot wire type air flow meter employing a hot wire temperature dependent resistor having a heat generating portion and a non-heat generating portion comprising a feedback control circuit controlling the hot wire temperature dependent resistor temperature constant which includes a phase shift circuit for inducing a sufficient phase delay in feedback signals thereby compensating a second stage delay in output signals of the air flow meter caused by the thermal inertia of the non-heat generating portion and enhancing response characteristic of the air flow meter.
公开/授权文献
- US4377126A Hard facing machine 公开/授权日：1983-03-22
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