CN101349209B - Motorcycle cylinder temperature sensor detection method - Google Patents
Motorcycle cylinder temperature sensor detection method Download PDFInfo
- Publication number
- CN101349209B CN101349209B CN2008100702973A CN200810070297A CN101349209B CN 101349209 B CN101349209 B CN 101349209B CN 2008100702973 A CN2008100702973 A CN 2008100702973A CN 200810070297 A CN200810070297 A CN 200810070297A CN 101349209 B CN101349209 B CN 101349209B
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- temperature sensor
- cylinder temperature
- ecu
- cylinder
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Abstract
The invention provides a method for a temperature sensor for detecting a motorcycle cylinder, which is characterized in that the method is carried out according to the following: step 1, a temperature sensor for a cylinder is arranged; step 2, an intake temperature sensor is arranged; step 3, an ECU reads a cylinder temperature value V1 of the temperature sensor of the cylinder and an air temperature value V0 of the intake temperature sensor; step 4, a comparison temperature threshold value V2 is set; step 5, the ECU compares the cylinder temperature value V1 with the threshold value V2, and judges whether the temperature sensor for the cylinder is normal or not; and step 6, the information of the temperature sensor for the cylinder is stored in a memory. The invention has the advantages that the method can accurately and reliably indicate that the temperature sensor for the cylinder breaks down when the temperature sensor for the cylinder is damaged or contacts an open circuit, so as to lower breakdown maintenance difficulty and speed up breakdown maintenance.
Description
Technical field
The invention belongs to motorcycle self check and control technique, specifically is a kind of motorcycle cylinder temperature sensor detection method.
Background technique
Motorcycle with electronic fuel injection system all is provided with cylinder temperature sensor and intake air temperature sensor now, wherein cylinder temperature sensor is installed in the motorcycle engine cylinder body, the detection of engine center housing temperature, intake air temperature sensor is installed in the motorcycle engine air inlet tube, atmospheric temperature in the detection of engine suction tude, the signal output part of two sensors is connected respectively to two input ends of ECU, ECU utilizes throttle position and engine speed to calculate fuel injection quantity and ignition advance angle, binding engine center housing temperature and intake temperature etc. are revised basic fuel injection amount and ignition advance angle on this basis, obtain final fuel injection quantity and ignition advance angle.Cylinder temperature sensor generally adopts thermal resistor welding lead to be connected on the ECU, and the operating temperature range of engine cylinder-body is in hot environment for a long time at-20 ℃～250 ℃, causes the solder joint fusing between thermal resistor and lead easily, influences the reliability of temperature transfer.Lose the signal of cylinder temperature sensor as ECU after, ECU just can only control motor and quit work.The driver knows that vehicle breaks down, and does not but know failure cause, has influenced the maintenance speed of motorcycle.
The shortcoming of existing motorcycle with electronic fuel injection system: when cylinder temperature sensor damages or contact when opening circuit, motorcycle can't start, but the prompting of incorrect fault reliably, has increased the maintenance difficulty and the engineering time of fault.
Summary of the invention
The purpose of this invention is to provide a kind of motorcycle cylinder temperature sensor detection method, can in the cylinder temperature sensor damage or contact when opening circuit, point out cylinder temperature sensor to break down accurately and reliably, reduce the maintenance difficulty of fault, accelerate the engineering time of fault.
For achieving the above object, the present invention describes a kind of motorcycle cylinder temperature sensor detection method, and its key is:
Step 1 is installed cylinder temperature sensor on the motorcycle engine cylinder head, make the output terminal of cylinder temperature sensor be connected to the input end of ECU;
Step 2 is installed intake air temperature sensor in the motorcycle engine gas handling system, makes the output terminal of intake air temperature sensor be connected to another input end of ECU;
Step 3, during ECU work, ECU regularly reads the cylinder temperature value V1 of cylinder temperature sensor and the temperature value V0 of intake air temperature sensor;
Step 4 is provided with C.T threshold value V2, V0-10 ℃ of this threshold value V2=temperature value;
Step 5, more described cylinder temperature value V1 of ECU and threshold value V2;
If it is unusual that cylinder temperature value V1, then is judged as described cylinder temperature sensor less than threshold value V2, ECU output cylinder temperature sensor abnormal signal;
If it is normal that cylinder temperature value V1, then is judged as described cylinder temperature sensor more than or equal to threshold value V2, and return step 3 and continue regularly to read cylinder temperature value V1 and temperature value V0;
When cylinder temperature sensor damages or contact when opening circuit, the cylinder temperature value V1 seriously distortion that ECU obtained, this moment, cylinder temperature value V1 can significantly beat, be easy to occur cylinder temperature value V1 less than temperature value VO, even less than the situation of threshold value V2, ECU judges in view of the above whether cylinder temperature sensor damages, and an actual effective technical support has just been arranged.
Step 6, ECU output cylinder temperature sensor abnormal signal is in the RAM of ECU storage and eprom memory stored cylinder temperature sensor abnormal information.
According to the judged result of step 5, ECU can send flicker instruction to the fault indicating lamp of motorcycle, and the flicker that tutorial light sends certain frequency and number of times shows, connect can to drive and the maintenance man to spell out be the cylinder temperature sensor damage.The preparation method of flicker instruction is a mature technology, and each motorcycle manufacturer can work out the flicker instruction according to the design of dispatching from the factory of self.
In described step 3, ECU read cylinder temperature value V1 and temperature value V0 every 5 seconds.
5 seconds the time lag can guarantee that the continuous effective of cylinder temperature value V1 and temperature value V0 reads, and can save ECU operation resource again.
Remarkable result of the present invention is: can in the cylinder temperature sensor damage or contact when opening circuit, point out cylinder temperature sensor to break down accurately and reliably, reduce the maintenance difficulty of fault, accelerate the engineering time of fault, can write down and storage failure information.
Description of drawings
Accompanying drawing 1 is a flow chart of steps of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
As shown in Figure 1,
A kind of motorcycle cylinder temperature sensor detection method, its key is:
Step 1 is installed cylinder temperature sensor on the motorcycle engine cylinder head, make the output terminal of cylinder temperature sensor be connected to the input end of ECU;
Step 2 is installed intake air temperature sensor in the motorcycle engine gas handling system, makes the output terminal of intake air temperature sensor be connected to another input end of ECU;
Step 3, during ECU work, ECU regularly reads the cylinder temperature value V1 of cylinder temperature sensor and the temperature value V0 of intake air temperature sensor;
Step 4 is provided with C.T threshold value V2, V0-10 ℃ of this threshold value V2=temperature value;
Step 5, more described cylinder temperature value V1 of ECU and threshold value V2;
If it is unusual that cylinder temperature value V1, then is judged as described cylinder temperature sensor less than threshold value V2, ECU output cylinder temperature sensor abnormal signal;
If it is normal that cylinder temperature value V1, then is judged as described cylinder temperature sensor more than or equal to threshold value V2, and return step 3 and continue regularly to read cylinder temperature value V1 and temperature value V0;
When cylinder temperature sensor damages or contact when opening circuit, the cylinder temperature value V1 seriously distortion that ECU obtained, this moment, cylinder temperature value V1 can significantly beat, be easy to occur cylinder temperature value V1 less than temperature value V0, even less than the situation of threshold value V2, ECU judges in view of the above whether cylinder temperature sensor damages, and an actual effective technical support has just been arranged.
Step 6, ECU output cylinder temperature sensor abnormal signal is in the RAM of ECU storage and eprom memory stored cylinder temperature sensor abnormal information.
According to the judged result of step 5, ECU can send flicker instruction to the fault indicating lamp of motorcycle, and the flicker that tutorial light sends certain frequency and number of times shows, connect can to drive and the maintenance man to spell out be the cylinder temperature sensor damage.
The RAM storage is used to store interim fault message, and eprom memory carries out long-term fault recording.
In described step 3, ECU read cylinder temperature value V1 and temperature value V0 every 5 seconds.
Claims (2)
1. a motorcycle cylinder temperature sensor detection method is characterized in that, follows these steps to carry out:
Step 1 is installed cylinder temperature sensor on the motorcycle engine cylinder head, make the output terminal of cylinder temperature sensor be connected to the input end of ECU;
Step 2 is installed intake air temperature sensor in the motorcycle engine gas handling system, makes the output terminal of intake air temperature sensor be connected to another input end of ECU;
Step 3, during ECU work, ECU regularly reads the cylinder temperature value V1 of cylinder temperature sensor and the temperature value V0 of intake air temperature sensor;
Step 4 is provided with C.T threshold value V2, V0-10 ℃ of this threshold value V2=temperature value;
Step 5, more described cylinder temperature value V1 of ECU and threshold value V2;
If it is unusual that cylinder temperature value V1, then is judged as described cylinder temperature sensor less than threshold value V2, ECU output cylinder temperature sensor abnormal signal;
If it is normal that cylinder temperature value V1, then is judged as described cylinder temperature sensor more than or equal to threshold value V2, and return step 3 and continue regularly to read cylinder temperature value V1 and temperature value V0;
Step 6, ECU output cylinder temperature sensor abnormal signal is in the RAM of ECU storage and eprom memory stored cylinder temperature sensor abnormal information.
2. a kind of motorcycle cylinder temperature sensor detection method according to claim 1 is characterized in that: in the described step 3, ECU read cylinder temperature value V1 and temperature value V0 every 5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100702973A CN101349209B (en) | 2008-09-16 | 2008-09-16 | Motorcycle cylinder temperature sensor detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100702973A CN101349209B (en) | 2008-09-16 | 2008-09-16 | Motorcycle cylinder temperature sensor detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101349209A CN101349209A (en) | 2009-01-21 |
| CN101349209B true CN101349209B (en) | 2011-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100702973A Expired - Fee Related CN101349209B (en) | 2008-09-16 | 2008-09-16 | Motorcycle cylinder temperature sensor detection method |
Country Status (1)
| Country | Link |
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| CN (1) | CN101349209B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009058514B3 (en) * | 2009-12-16 | 2011-04-14 | Continental Automotive Gmbh | Method for monitoring a coolant temperature sensor and / or a cylinder head temperature sensor of a motor vehicle and control device |
| CN102183200B (en) * | 2011-03-03 | 2013-04-03 | 力帆实业(集团)股份有限公司 | Gap detecting circuit for engine speed sensor and no-load detecting method thereof |
| CN112697306A (en) * | 2020-12-09 | 2021-04-23 | 东软睿驰汽车技术（沈阳）有限公司 | Method and device for detecting temperature abnormality inside battery pack and related product |
| CN113030619A (en) * | 2021-03-15 | 2021-06-25 | 湖南道依茨动力有限公司 | Fault detection method and fault detection system of temperature sensor and vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614664A (en) * | 1994-07-19 | 1997-03-25 | Unisia Jecs Corporation | Self diagnosis method and apparatus for a fuel temperature detection apparatus of an internal combustion engine |
| CN2895754Y (en) * | 2005-07-19 | 2007-05-02 | 李红高 | Protection controller of automotive engine |
| CN200982234Y (en) * | 2006-12-14 | 2007-11-28 | 西南大学 | Motorcycle fuel controller with multiple intelligent protection function |
-
2008
- 2008-09-16 CN CN2008100702973A patent/CN101349209B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614664A (en) * | 1994-07-19 | 1997-03-25 | Unisia Jecs Corporation | Self diagnosis method and apparatus for a fuel temperature detection apparatus of an internal combustion engine |
| CN2895754Y (en) * | 2005-07-19 | 2007-05-02 | 李红高 | Protection controller of automotive engine |
| CN200982234Y (en) * | 2006-12-14 | 2007-11-28 | 西南大学 | Motorcycle fuel controller with multiple intelligent protection function |
Non-Patent Citations (2)
| Title |
|---|
| JP昭59-108831A 1984.06.23 |
| 胡春明,刘娜,周能辉.电喷摩托车的故障及其快速诊断技术.《小型内燃机与摩托车》.2007,第36卷(第3期),93-96. * |
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| CN101349209A (en) | 2009-01-21 |
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Granted publication date: 20110608 Termination date: 20190916 |