JPS54140019A - Method of detecting behavior of nozzle needle valve in fuel injection valve - Google Patents
Method of detecting behavior of nozzle needle valve in fuel injection valveInfo
- Publication number
- JPS54140019A JPS54140019A JP4671578A JP4671578A JPS54140019A JP S54140019 A JPS54140019 A JP S54140019A JP 4671578 A JP4671578 A JP 4671578A JP 4671578 A JP4671578 A JP 4671578A JP S54140019 A JPS54140019 A JP S54140019A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- leaking
- fuel injection
- flow
- nozzle needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
PURPOSE: To provide the subject method comprising detecting the pulsating flow of leaking fuel from a fuel injection valve as an electrical pulse by use of a hot-wire flow meter, thereby detecting the behavior of the nozzle needle valve in the fuel injection valve.
CONSTITUTION: A spring chamber 8 is filled with fuel leaking from the nozzle, and the fuel passes through an overflow pipe 8 and a conduit line part 10 and returns to a fuel tank. In this case, the leaking fuel generates a movement (flow speed) by the fuel injection. On the other hand, a current is caused to flow through the probe 12 of the a hot-wire flow meter 11 to constantly heat the same. Accordingly, the probe 12 is cooled in accordance with the flow speed of leaking fuel, and its electrical resistance varies by the variation of the flow speed. The variation of the electrical resistance is detected and treated by the hot-wire flow meter 11 to form an electrical pulse signal corresponding to the pulsating flow of the leaking fuel. By use of the pulse signal the timing of the rotational number of the nozzle needle valve can be measured.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4671578A JPS5950868B2 (en) | 1978-04-21 | 1978-04-21 | Method for detecting behavior of nozzle needle valve in fuel injection valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4671578A JPS5950868B2 (en) | 1978-04-21 | 1978-04-21 | Method for detecting behavior of nozzle needle valve in fuel injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54140019A true JPS54140019A (en) | 1979-10-30 |
JPS5950868B2 JPS5950868B2 (en) | 1984-12-11 |
Family
ID=12755037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4671578A Expired JPS5950868B2 (en) | 1978-04-21 | 1978-04-21 | Method for detecting behavior of nozzle needle valve in fuel injection valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5950868B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107449598A (en) * | 2017-09-05 | 2017-12-08 | 机科发展科技股份有限公司 | Measurement apparatus and needle-valve body flow measurement device |
-
1978
- 1978-04-21 JP JP4671578A patent/JPS5950868B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107449598A (en) * | 2017-09-05 | 2017-12-08 | 机科发展科技股份有限公司 | Measurement apparatus and needle-valve body flow measurement device |
CN107449598B (en) * | 2017-09-05 | 2024-03-26 | 机科发展科技股份有限公司 | Measuring device and needle valve flow measuring device |
Also Published As
Publication number | Publication date |
---|---|
JPS5950868B2 (en) | 1984-12-11 |
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