CN205277596U - Quick detection device of engine low temperature starting breakdown - Google Patents
Quick detection device of engine low temperature starting breakdown Download PDFInfo
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- CN205277596U CN205277596U CN201520918987.5U CN201520918987U CN205277596U CN 205277596 U CN205277596 U CN 205277596U CN 201520918987 U CN201520918987 U CN 201520918987U CN 205277596 U CN205277596 U CN 205277596U
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Abstract
The utility model discloses a quick detection device of engine low temperature starting breakdown belongs to engine failure detection technical field, including the display that is used for detecting low temperature starting breakdown controller, the check out test set that links to each other with the controller and demonstration trouble result, the check out test set is including install the hall sensor who passes, the pressure sensor who installs the temperature sensor who sets up and install in engine intake manifold at the high -pressure pump oil inlet of engine on starter motor power supply wire, the controller links to each other through the connecting wire with the positive negative pole of battery and is used for detecting the battery voltage signal, and generator W terminal passing signal line is connected with the controller and is used for detecting a motor rotation number signal, and the cluster has 2K resistance and a diode on the signal line between generator W terminal and the controller. The utility model discloses main parameter to the start -up course carries out real -time detection, and quickly determine low temperature starting breakdown's reason and output display make operator fault localization rapidly, in time troubleshooting.
Description
Technical field
The utility model relates to motor fault detection technique field, especially a kind of engine cold-starting fault device for fast detecting.
Background technology
At present on vehicle, diesel engine, by starting driven by motor, reaches after starting rotating speed, and in cylinder, be elevated to can by diesel oil ignited temperature for compression top center temperature, and engine just can normally start. For low temperature environment, owing to inlet air temperature is low, cause compression top center temperature on the low side, cannot diesel pilot. Usually all it is furnished with cold-starting supplementary unit for this reason, air inlet is heated, top dead center temperature is raised, improves startability. Cold-starting supplementary unit is made up of magnetic valve, heater plug, controller, oil circuit, circuit etc., owing to structure relates to multiple parts, add original startup motor, store battery, engine etc., making cold-starting process be subject to the impact of multiple link, any one parts goes wrong all can affect the normal startup of whole engine. When a problem occurs, carrying out opening and inspecting investigation one by one very difficult, labour intensity is big and consuming time longer, often brings unacceptable impact for Emergency use vehicle and equipment.
Practical novel content
The utility model technical issues that need to address are to provide a kind of engine cold-starting fault device for fast detecting, the significant parameter of start-up course is detected in real time, determine the reason of cold-starting fault fast and output display, make operator can locate rapidly fault, fix a breakdown in time.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
Engine cold-starting fault device for fast detecting, comprises the indicating meter for detecting cold-starting fail-safe control device, the test set being connected with controller and display fail result;
Described test set comprise be arranged on start on motor electric power conductor pass hall sensing device, be arranged on engine air inlet tube in the temperature sensor that arranges and the pressure transmitter installed at the high-pressure pump oil-in of engine;
Described controller is connected for detecting store battery voltage signal with accumulator anode and cathode by wire, generator W terminal is connected for detecting generator tach signal by signal wire with controller, and on the signal wire between generator W terminal and controller, string has 2K resistance and a diode.
The further improvement of technical solutions of the utility model is: described controller comprises micro-chip circuit, display circuit and signal detection process circuit, the output terminal of signal detection process circuit is connected with micro-chip circuit, micro-chip circuit output end is connected with display circuit, signal detection process circuit receives the signal of test set and processes, and micro-chip circuit reads the process data analysis trouble reason of signal detection process circuit and controls display circuit output display.
The further improvement of technical solutions of the utility model is: described indicating meter is connected with the display circuit of controller, and described indicating meter is provided with malfunction coefficient lamp.
The further improvement of technical solutions of the utility model is: described malfunction coefficient lamp is 6, represents that startup electrical fault/starting resistance is excessive, start line fault, accumulator failure, oil supply system failure, mechanical fault, primary heater unit fault respectively.
Owing to have employed technique scheme, the technical progress that the utility model obtains is:
The utility model detection device comprises controller, test set and indicating meter, starting cross-under hall sensing device on motor electric power conductor, the temperature sensor that arranges, the pressure transmitter installed at the high-pressure pump oil-in of engine, is connected with controller by accumulator anode and cathode, is connected with controller by signal wire by generator W terminal and is used for detecting generator tach signal in engine air inlet tube; By installing these test sets, each link associated components working order involved by cold-starting is detected, and after detected result is compared process, quick failure judgement reason, and result is outputted to the indicating meter of controller is shown to officer, rapidly removing faults, it is to increase efficiency.
Being provided with 6 malfunction coefficient lamps on indicating meter is, represent that startup electrical fault/starting resistance is excessive, start line fault, accumulator failure, oil supply system failure, mechanical fault, primary heater unit fault respectively, officer can not have wheel house and see the reason that fault occurs intuitively, reduces the labour intensity of officer.
Accompanying drawing explanation
Fig. 1 is that the utility model connects block diagram;
Fig. 2 is the schema of the utility model detection method.
Embodiment
Below in conjunction with embodiment, the utility model is described in further details:
As shown in Figure 1, engine cold-starting fault device for fast detecting comprises controller and test set, test set is connected with controller will detect signal transmission in controller, generator W terminal is connected for detecting generator tach signal by signal wire with controller, on signal wire between generator W terminal and controller, string has 2K resistance and a diode, controller is connected for detecting store battery voltage signal by wire with accumulator anode and cathode, and controller is also provided with the indicating meter showing concrete fault. The utility model is by detecting each link associated components working order involved by cold-starting, and after detected result is compared process, quick failure judgement reason, and result is outputted to indicating meter is shown to officer, rapidly removing faults, it is to increase efficiency.
Test set comprise install start on motor electric power conductor the hall sensing device passed, pressure transmitter that the temperature sensor that arranges in engine air inlet tube and the high-pressure pump oil-in at engine are installed, and accumulator anode and cathode is connected with controller by wire, so that controller can directly monitor the voltage of store battery, generator W terminal is connected on controller for detecting generator tach signal by signal wire.
Controller comprises micro-chip circuit, display circuit and signal detection process circuit, and the output terminal of signal detection process circuit is connected with micro-chip circuit, and micro-chip circuit output end is connected with display circuit. The tach signal that signal detection process circuit sends for receiving and process the electric current signal of hall sensing device, the temperature signal of temperature sensor, the pressure signal of pressure transmitter, the voltage signal of store battery and generator W end, the data that micro-chip circuit reads signal detection processing circuit processes by the trace routine analyzing failure cause in micro-chip and control display circuit and export over the display, indicating meter is connected with the display circuit of controller, and indicating meter is provided with malfunction coefficient lamp. Malfunction coefficient lamp is 6, represents that startup electrical fault/starting resistance is excessive, start line fault, accumulator failure, oil supply system failure, mechanical fault, primary heater unit fault respectively. Officer can not have wheel house and see the reason that fault occurs intuitively, reduces the labour intensity of officer.
Trace routine in micro-chip is specific as follows:
A, power on to engine cold-starting fault device for fast detecting, controller receives generator W terminal and sends tach signal analytical calculation and draw motor speed, detect after motor speed reaches idling to be that engine successfully starts, exit trace routine, detection terminates, and detects that motor speed is less than idling and then enters step b;
Engine idle maintains the minimum speed of engine steady running, is generally 600 revs/min;
B, starts current of electric by the detection of hall sensing device, if not detecting that electric current returns step b and continues detection, detecting and entering step c after starting current of electric;
C, 24V is exported to engine D+, controller receives generator W terminal and sends tach signal analytical calculation and draw motor speed, judge whether motor speed reaches idling, motor speed reaches idling rear engine and starts and successfully exit trace routine, but the startup rotating speed not reaching idling such as motor speed reaching engine then enters steps d, does not also reach simultaneously and starts rotating speed as engine does not reach rotating speed idling and then enter step f;
The startup rotating speed of engine refers to that diesel oil in motor traction to cylinder possesses ignition condition but the rotating speed that also do not catch fire to engine by starting, it is generally 120��200 revs/min, now engine is in critical startup state, but does not also enter the state caught fire and dragged by self injection diesel oil;
D, detects the inlet air temperature of engine by temperature sensor, and inlet air temperature is less than-10 DEG C and then judges primary heater unit fault; Inlet air temperature is more than or equal to-10 DEG C and then enters step e;
E, is detected the fuel injection pulse at high-pressure pump oil-in place, detects that fuel injection pulse is then judged as mechanical fault, it does not have detect that fuel injection pulse is then judged as oil supply system failure by fuel pressure sensor;
Mechanical fault generally refers to oil thrower problem, piston problem etc., owing to these parts are all at engine interior, needs engine body structure is opened and inspect inspection so that maintenance is located after orientating mechanical fault as;
F, current of electric is started by the detection of hall sensing device, judge to start current of electric whether higher than the curve reference value of corresponding rotating speed, higher than the curve reference value of corresponding rotating speed, startup current of electric is then judged as that startup electrical fault/starting resistance is excessive, startup current of electric then enters step g lower than the curve reference value of corresponding rotating speed;
G, detects store battery voltage by controller, judges whether store battery voltage is less than 12V, and store battery voltage is less than 12V and is then judged as accumulator failure, and store battery voltage is more than or equal to 12V and is then judged as starting line fault.
Claims (4)
1. engine cold-starting fault device for fast detecting, it is characterised in that: comprise the indicating meter for detecting cold-starting fail-safe control device, the test set being connected with controller and display fail result;
Described test set comprise be arranged on start on motor electric power conductor pass hall sensing device, be arranged on engine air inlet tube in the temperature sensor that arranges and the pressure transmitter installed at the high-pressure pump oil-in of engine;
Described controller is connected for detecting store battery voltage signal with accumulator anode and cathode by wire, generator W terminal is connected for detecting generator tach signal by signal wire with controller, and on the signal wire between generator W terminal and controller, string has 2K resistance and a diode.
2. engine cold-starting fault device for fast detecting according to claim 1, it is characterized in that: described controller comprises micro-chip circuit, display circuit and signal detection process circuit, the output terminal of signal detection process circuit is connected with micro-chip circuit, micro-chip circuit output end is connected with display circuit, signal detection process circuit receives the signal of test set and processes, and micro-chip circuit reads the process data analysis trouble reason of signal detection process circuit and controls display circuit output display.
3. engine cold-starting fault device for fast detecting according to claim 2, it is characterised in that: described indicating meter is connected with the display circuit of controller, and described indicating meter is provided with malfunction coefficient lamp.
4. engine cold-starting fault device for fast detecting according to claim 3, it is characterized in that: described malfunction coefficient lamp is 6, represent that startup electrical fault/starting resistance is excessive, start line fault, accumulator failure, oil supply system failure, mechanical fault, primary heater unit fault respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918987.5U CN205277596U (en) | 2015-11-18 | 2015-11-18 | Quick detection device of engine low temperature starting breakdown |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918987.5U CN205277596U (en) | 2015-11-18 | 2015-11-18 | Quick detection device of engine low temperature starting breakdown |
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| CN205277596U true CN205277596U (en) | 2016-06-01 |
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| CN201520918987.5U Active CN205277596U (en) | 2015-11-18 | 2015-11-18 | Quick detection device of engine low temperature starting breakdown |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386873A (en) * | 2015-11-18 | 2016-03-09 | 河北华北柴油机有限责任公司 | Low temperature starting fault rapid detecting device and method for engine |
| CN115144175A (en) * | 2022-04-27 | 2022-10-04 | 中国北方车辆研究所 | Low-temperature starting resistance testing and data processing method for comprehensive transmission device |
-
2015
- 2015-11-18 CN CN201520918987.5U patent/CN205277596U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386873A (en) * | 2015-11-18 | 2016-03-09 | 河北华北柴油机有限责任公司 | Low temperature starting fault rapid detecting device and method for engine |
| CN115144175A (en) * | 2022-04-27 | 2022-10-04 | 中国北方车辆研究所 | Low-temperature starting resistance testing and data processing method for comprehensive transmission device |
| CN115144175B (en) * | 2022-04-27 | 2024-04-30 | 中国北方车辆研究所 | Low-temperature starting resistance test and data processing method for comprehensive transmission device |
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