JPS5675934A - Monitor of operational condition of engine - Google Patents
Monitor of operational condition of engineInfo
- Publication number
- JPS5675934A JPS5675934A JP15202479A JP15202479A JPS5675934A JP S5675934 A JPS5675934 A JP S5675934A JP 15202479 A JP15202479 A JP 15202479A JP 15202479 A JP15202479 A JP 15202479A JP S5675934 A JPS5675934 A JP S5675934A
- Authority
- JP
- Japan
- Prior art keywords
- rotational frequency
- signal
- engine
- economical
- time
- 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
Abstract
PURPOSE: To monitor operational condition of an engine such as that of a bus by indicating the rotational frequency beyond that under the optimum economical requirements and integrated value of time in which the engine has been run beyond the economical rotational frequency.
CONSTITUTION: Rotational frequency of an engine is detected by a detector 1 and taken out as signal R. Frequency signal R is converted to voltage signal VR to be supplied to comparators 21aW21h for indicating the rotational frequency and compared with the reference voltage VaWVh corresponding to rotational frequency indications while being supplied to the comparator 23 to be compared with the reference voltage corresponding to the economical rotational frequency. The comparator 23 generates the output excess signal Vsx of the reference every time the rotational frequency exceeds the economical one. This signal Vsx is applied to the input of a counter 6 to be counted and displayed. Also, the excess signal Vsx is supplied to a gate 8 to operate an integrating circuit of excess time of the reference for displaying integrated time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15202479A JPS5925866B2 (en) | 1979-11-26 | 1979-11-26 | Engine operating condition monitoring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15202479A JPS5925866B2 (en) | 1979-11-26 | 1979-11-26 | Engine operating condition monitoring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5675934A true JPS5675934A (en) | 1981-06-23 |
JPS5925866B2 JPS5925866B2 (en) | 1984-06-21 |
Family
ID=15531385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15202479A Expired JPS5925866B2 (en) | 1979-11-26 | 1979-11-26 | Engine operating condition monitoring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5925866B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4716872A (en) * | 1985-09-17 | 1988-01-05 | Pol Alexander T | Economic speed indicator |
US6306063B1 (en) | 1997-01-31 | 2001-10-23 | Cummins Engine Company, Inc. | System for controlling combustion engine performance in accordance with driver behavior |
-
1979
- 1979-11-26 JP JP15202479A patent/JPS5925866B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4716872A (en) * | 1985-09-17 | 1988-01-05 | Pol Alexander T | Economic speed indicator |
US6306063B1 (en) | 1997-01-31 | 2001-10-23 | Cummins Engine Company, Inc. | System for controlling combustion engine performance in accordance with driver behavior |
Also Published As
Publication number | Publication date |
---|---|
JPS5925866B2 (en) | 1984-06-21 |
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