发明名称 |
Engine speed measuring system |
摘要 |
A method and a device for measuring the speed of an internal combustion engine make use of the changes in the exhaust gas pressure, which are related to the various phases of the combustion cycle. The pressure characteristics, which are assigned to a specific segment of the cycle, such as the exhaust stroke, are displayed by a pressure transducer, which is typically positioned in the exhaust pipe. A suitable circuit identifies and counts the pulses, which are converted into values for revolutions per minute. Statistical techniques can be applied to the counts in order to improve the accuracy of measurement.
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申请公布号 |
DE4406962(A1) |
申请公布日期 |
1994.09.22 |
申请号 |
DE19944406962 |
申请日期 |
1994.03.03 |
申请人 |
ENVIRONMENTAL SYSTEMS PRODUCTS INC., EAST GRANBY, CONN., US |
发明人 |
TEDESCHI, RINALDO, NEWINGTON, CONN., US |
分类号 |
G01M15/10;G01P3/48;G01P5/14;(IPC1-7):G01P5/14;F02D41/00;F02P5/12 |
主分类号 |
G01M15/10 |
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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