JPS6417451U - - Google Patents
Info
- Publication number
- JPS6417451U JPS6417451U JP11321087U JP11321087U JPS6417451U JP S6417451 U JPS6417451 U JP S6417451U JP 11321087 U JP11321087 U JP 11321087U JP 11321087 U JP11321087 U JP 11321087U JP S6417451 U JPS6417451 U JP S6417451U
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- hot water
- heater
- pump
- input signal
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000003745 diagnosis Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 claims 3
- 238000002485 combustion reaction Methods 0.000 claims 2
- 230000007257 malfunction Effects 0.000 claims 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing Of Engines (AREA)
Description
第１図は本考案の温水循環系の診断装置を備え
たデイーゼルエンジンの模式図、第２図は上記温
水循環系のポンプとヒータの運転シーケンスとそ
れに伴う温水の圧力および温度変化を示す図、第
３図は上記診断装置の処理の流れを示すフローチ
ヤートである。
１…デイーゼルエンジン、２…管路、３…ポン
プ、５…ヒータ、６…圧力センサ、７…温度セン
サ、８…コンピユータ、９…制御装置、１０…電
源、１１，１２…連動スイツチ、１３…表示装置
。
FIG. 1 is a schematic diagram of a diesel engine equipped with the hot water circulation system diagnosis device of the present invention, and FIG. 2 is a diagram showing the operation sequence of the pump and heater of the hot water circulation system and the accompanying hot water pressure and temperature changes. FIG. 3 is a flowchart showing the processing flow of the diagnostic device. DESCRIPTION OF SYMBOLS 1...Diesel engine, 2...Pipe line, 3...Pump, 5...Heater, 6...Pressure sensor, 7...Temperature sensor, 8...Computer, 9...Control device, 10...Power source, 11, 12...Interlocking switch, 13... Display device.
Claims (1)
て内燃機関に循環供給し、内燃機関の始動を促進
する温水循環系の診断装置であつて、 上記温水の温度を検出する温度センサと、上記
温水の流れを検出するフロースイツチと、上記温
度センサからの入力信号に基づいて温水の温度が
予め定められた適正範囲内にあるか否かを判別す
る温度判別手段と、この温度判別手段で温度が適
正範囲外と判別されたとき、温度の高、低に応じ
て上記ヒータやポンプが停止または運転されてい
るか否かを、ヒータやポンプの電源の接点信号に
よつて判別して、制御の異常を診断する制御異常
診断手段と、この制御異常診断手段で正常に制御
されていると判別されたとき、上記フロースイツ
チからの入力信号に基づいて温水の流れが有るか
否かを判別するとともに、上記温度センサからの
入力信号に基づいて温水の温度が上昇中であるか
否かを判別して、ヒータやポンプの動作異常を診
断する動作異常診断手段とを備えたことを特徴と
する温水循環系の診断装置。[Scope of Claim for Utility Model Registration] A diagnostic device for a hot water circulation system that circulates and supplies hot water maintained at an appropriate temperature by a heater to an internal combustion engine using a pump to promote the start of the internal combustion engine, A temperature sensor for detecting, a flow switch for detecting the flow of the hot water, and a temperature determining means for determining whether the temperature of the hot water is within a predetermined appropriate range based on an input signal from the temperature sensor. When this temperature determination means determines that the temperature is outside the appropriate range, it determines whether the heater or pump is stopped or running depending on whether the temperature is high or low, using a contact signal from the power source of the heater or pump. control abnormality diagnosis means for diagnosing abnormalities in the control; and when the control abnormality diagnosis means determines that the control is normally controlled, there is a flow of hot water based on the input signal from the flow switch. and malfunction diagnostic means for determining whether the temperature of the hot water is rising based on the input signal from the temperature sensor and diagnosing malfunction of the heater or pump. A hot water circulation system diagnostic device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11321087U JPH0334671Y2 (en) | 1987-07-22 | 1987-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11321087U JPH0334671Y2 (en) | 1987-07-22 | 1987-07-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6417451U true JPS6417451U (en) | 1989-01-27 |
| JPH0334671Y2 JPH0334671Y2 (en) | 1991-07-23 |
Family
ID=31352842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11321087U Expired JPH0334671Y2 (en) | 1987-07-22 | 1987-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0334671Y2 (en) |
-
1987
- 1987-07-22 JP JP11321087U patent/JPH0334671Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0334671Y2 (en) | 1991-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59103235U (en) | Temperature measurement device for internal combustion engines | |
| JPS63145137U (en) | ||
| JPS63190509U (en) | ||
| JPH0256838U (en) | ||
| JPS6338668U (en) | ||
| JPS6393455U (en) | ||
| JPH0411239U (en) | ||
| JPH0383362U (en) | ||
| JPH0378966U (en) | ||
| JPH0334671Y2 (en) | ||
| JPS62185831U (en) | ||
| JPS6415749U (en) | ||
| JPS63126548U (en) | ||
| JPH01166752U (en) | ||
| JPH01103734U (en) | ||
| JPH0471743U (en) | ||
| JPS6241826U (en) | ||
| JPH01129550U (en) | ||
| JPS6337408U (en) | ||
| JPS6345044U (en) | ||
| JPH07116997B2 (en) | Exhaust gas recirculation equipment diagnostic equipment | |
| JPS62190859U (en) | ||
| JPS62152050U (en) | ||
| JPS5965354U (en) | water heater | |
| JPH0373651U (en) |