发明名称 |
Air flow meter for internal combustion engine |
摘要 |
An air flow meter for an internal combustion engine comprises an intake air passage of an internal combustion engine, which is composed of a primary flow passage and an auxiliary flow passage having a specified length and a portion adapted to project within the primary flow passage and made substantially parallel to the direction of the air flow passing through the primary flow passage. A sensor for measurement of an intake air flowrate is disposed within the auxiliary flow passage. The primary flow passage is provided with a portion where the cross-sectional area of the primary flow passage is gradually reduced. In the vicinity of this cross-sectional area reducing portion, there is disposed an outlet of the auxiliary flow passage.
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申请公布号 |
US4986116(A) |
申请公布日期 |
1991.01.22 |
申请号 |
US19890419338 |
申请日期 |
1989.10.10 |
申请人 |
HITACHI, LTD.;HITACHI AUTOMOTIVE ENGINEERING CO., LTD. |
发明人 |
USUI, TOSHIFUMI;HOHKITA, ATSUSHI |
分类号 |
G01F1/68;F02B1/04;F02D41/18;G01F1/684;G01F5/00 |
主分类号 |
G01F1/68 |
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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