TW201407148A - Transmission solenoid valve abnormality detecting method and system thereof - Google Patents

Abstract

A transmission solenoid valve abnormality detecting method and a system thereof are disclosed. The method comprises the following steps: a step of setting test conditions such as an inlet pressure, an oil preset temperature and a flow of inputting oil into a solenoid valve; a step of generating, according to the test conditions, a standard hydraulic curve and a standard current curve by inputting oil into a normal solenoid valve; a step of generating, according to the test conditions, a hydraulic curve under test and a current curve under test by inputting oil into a solenoid valve under test; a step of performing comparison by comparing the hydraulic curve under test and the current curve under test of the solenoid valve under test with the standard hydraulic curve and the standard current curve; and a step of comparing whether the hydraulic curve under test and the current curve under test are within ranges of the standard hydraulic curve, the standard current curve and their allowable error ranges so as to determine whether the solenoid valve under test is abnormal. According to the abovementioned steps, the present invention provides a detection method capable of rapidly and effectively determining whether a solenoid valve is abnormal.

Description

Transmission valve abnormality detection method and system thereof

The invention relates to a solenoid valve abnormality detecting method and a system thereof for the gearbox, in particular to a detecting method and a detecting system capable of quickly and effectively interpreting whether the electromagnetic valve is abnormal.

According to the automobile, the automatic transmission of the automobile is used to provide a vehicle transmission in which the vehicle automatically changes the gear ratio during the driving to make a shift, and the transmission uses various sensors to notify the driving computer of the operation of the engine, so that the driving is performed. The computer has to transmit a signal to the solenoid valve of the hydraulic control system to change the oil path in the automatic transmission to achieve the purpose of controlling the gear position.

Check, because the automatic transmission is equipped with a number of solenoid valves to adjust the oil path to control the gear position, and when the solenoid valve is abnormal, because the solenoid valves can not be disassembled and detected from the car, only Can rely on the experience of maintenance workers to determine which solenoid valve is abnormal; in particular, the solenoid valve order of the automatic transmission of each brand car is also different, so it is also easy to cause maintenance workers to accurately determine which electromagnetic The valve is abnormal, which leads to the inconvenience of subsequent maintenance.

The main object of the present invention is to provide a detection method and a detection system thereof which can quickly and effectively determine whether an electromagnetic valve is abnormal.

In order to achieve the above object, the electromagnetic valve abnormality detecting method of the gearbox of the present invention comprises the following steps: Step 1: Set the test conditions of the input pressure of the oil input solenoid valve, the preset temperature and flow rate of the oil; preset the input pressure, oil temperature and flow rate of the oil input solenoid valve, so that the condition is used as a test for subsequent testing operations. Condition; Step 2: According to the test condition of step 1, the oil is input into the normal solenoid valve, thereby generating the standard hydraulic curve and current curve and defining the allowable error range; taking a normal solenoid valve, according to the input pressure in step one The test conditions of the preset temperature and flow rate of the oil, adjust and control the actuation of the solenoid valve, change the oil passage in the automatic transmission to generate a standard hydraulic curve and a standard current curve, and define the tolerance of the standard hydraulic curve and the standard current curve. Error range; Step 3: According to the test condition of step 1, the oil is input into the solenoid valve to be tested, thereby generating the hydraulic curve and the current curve to be tested; according to the test conditions of the input pressure and the preset temperature of the oil, the oil is The liquid is input to the solenoid valve to be tested, and the operation of the control solenoid valve is adjusted to change the oil passage in the automatic transmission. A hydraulic curve to be tested and a current curve to be tested are generated; Step 4: comparing the hydraulic curve to be tested and the current curve to be tested with the standard hydraulic curve and the standard current curve; and the electromagnetic valve to be tested is generated The measured hydraulic curve and the current curve to be tested are compared with the standard hydraulic curve to be tested and the standard current curve to know the hydraulic curve to be tested, the current curve to be tested and the standard hydraulic curve, and the standard electricity. The difference of the flow curve; Step 5: When the hydraulic curve to be tested and the current curve to be tested fall within the range of the standard hydraulic curve, the standard current curve and the allowable error range respectively, it is determined that the solenoid valve to be tested is normal; When the hydraulic curve to be tested or the current curve to be tested does not fall within the range of the standard hydraulic curve, the standard current curve and the allowable error range thereof, it is determined that the solenoid valve to be tested is abnormal; and the solenoid valve of the gearbox of the present invention is abnormal. The detection system comprises an oil pressure tank, an electromagnetic control device, a solenoid valve seat and a signal conversion device; wherein: the oil pressure tank is used for storing oil, and the oil pressure tank is connected with a hydraulic pump, and the hydraulic pump can be The oil stored in the oil pressure tank is pressurized and sent to the electromagnetic control device through the oil delivery pipe, and the oil pressure tank is connected with a back pressure control valve, thereby reducing the input pressure of the oil pressure pump, so that the oil can pass through The back pressure control valve is returned to the oil pressure tank; and the oil pressure tank is connected with a preheating heat pump to heat the oil in the oil pressure tank; the electromagnetic control device includes a plurality of electronic control switches The plurality of electronically controlled switching valves are connected to the hydraulic pump by a pipeline, and the plurality of electronically controlled switching valves are pivotally connected with the electromagnetic valve to be tested, thereby controlling the actuation of the electromagnetic valve to be tested, and the electronically controlled switching valve And a pressure transmitter is connected to adjust the pressure of the oil in the control pipeline; and the electromagnetic control device includes a flow control valve to control the flow of the oil input to the electromagnetic valve seat; the electromagnetic valve seat is used to provide the test The solenoid valve is installed to provide a stable connection between the solenoid valve to be tested and the pipeline of the electromagnetic control device, so that the oil can be smoothly input. The electromagnetic valve to be tested; the signal conversion device comprises a plurality of current signal conversion controllers, and the plurality of current signal conversion controllers are pivotally connected with the electromagnetic valve to be tested on the electromagnetic valve seat, thereby interpreting the current signal of the electromagnetic valve to be tested The plurality of current signal conversion controllers are connected to the voltage transmitter signal conversion transmitter and the voltage indication controller; thereby, a detection method capable of quickly and effectively interpreting whether the solenoid valve is abnormal and a detection system thereof are provided.

The technical means and method for using the present invention to achieve the purpose are described in detail with the step diagram shown in the first figure and the system diagram shown in the second figure. As shown in the first figure, the present invention is as shown in the first figure. The solenoid valve abnormality detecting method of the gearbox includes the following steps:

Step 1: Set the test conditions of the input pressure of the oil input solenoid valve, the preset temperature of the oil and the flow rate; preset the input pressure of the oil input solenoid valve (eg 12 kg/cm ² ), the oil temperature (eg: 80 ° C) and flow rate (eg 5 l / min), make this condition as a test condition for subsequent testing operations.

Step 2: According to the test condition of step 1, the oil is input into the normal solenoid valve, thereby generating a standard hydraulic curve and current curve and defining the allowable error range; taking a normal solenoid valve, according to the input pressure in step one, Test conditions for oil preset temperature and flow rate, adjustment Controlling the actuation of the solenoid valve, changing the oil path in the automatic transmission, thereby generating a standard hydraulic curve and a standard current curve, and defining a tolerance range of the standard hydraulic curve and the standard current curve.

Step 3: According to the test condition of step 1, the oil is input into the electromagnetic valve to be tested, thereby generating the hydraulic curve and the current curve to be tested; according to the test conditions of the input pressure, the preset temperature of the oil and the flow rate, the oil is pressed. Input the solenoid valve to be tested, and adjust the actuation of the control solenoid valve to change the oil path in the automatic transmission to generate a hydraulic curve to be tested and a current curve to be measured.

Step 4: Comparing the hydraulic curve to be tested and the current curve to be tested with the standard hydraulic curve and the standard current curve; the hydraulic curve to be tested and the current curve to be measured generated by the solenoid valve to be tested and the standard to be tested The hydraulic curve and the standard current curve are compared to know the difference between the hydraulic curve to be tested, the current curve to be measured, the standard hydraulic curve, and the standard current curve.

Step 5: When the hydraulic curve to be tested and the current curve to be tested fall within the range of the standard hydraulic curve, the standard current curve and the allowable error range respectively, it is determined that the solenoid valve to be tested is normal; and when the hydraulic curve to be tested or When the current curve to be tested does not fall within the range of the standard hydraulic curve, the standard current curve and the allowable error range, it is determined that the solenoid valve to be tested is abnormal.

In order to achieve the above detection method, as shown in the second figure, it is used to provide a gearbox The solenoid valve abnormality detecting system comprises a hydraulic pressure tank 10, an electromagnetic control device 20, a solenoid valve seat 30 and a signal conversion device 40; wherein: the oil pressure tank 10 (please refer to the second figure at the same time) The oil pressure tank 10 is connected to a hydraulic pump 11 , and the oil pump 11 can pressurize and store the oil stored in the oil pressure tank 10 through the oil delivery pipe 12 to the electromagnetic control device 20 . And the hydraulic pressure tank 10 is connected with a back pressure control valve 13 to reduce the input pressure of the hydraulic pump 11 so that the oil can be returned to the oil pressure tank 10 via the back pressure control valve 13; and the oil pressure tank 10 and a preheating heat pump 14 is connected to heat the oil in the oil pressure tank 10 to heat up.

In the above, a filter 15 is disposed between the oil pressure tank 10 and the hydraulic pump 11 to filter the oil of the oil pressure tank 10.

The electromagnetic control device 20 (please refer to the second figure at the same time) includes a plurality of electronically controlled on-off valves 21, which are connected by the pipeline 22 and the oil delivery pipe 12 of the hydraulic pump 10. The electronic control switch valve 21 is pivotally connected to the solenoid valve 50 to be tested, thereby controlling the actuation of the solenoid valve 50 to be tested, and the electronic control switch valve 21 is connected with a pressure transmitter 23 to adjust the control pipeline. The pressure of the oil in 22; further, the electromagnetic control device 20 further includes a flow control valve 24 for controlling the flow of the oil into the solenoid valve seat 30.

The electromagnetic valve seat 30 (please refer to the second figure at the same time) is used for providing the electromagnetic valve 50 to be tested, so as to provide the solenoid valve 50 to be tested and stably connected to the pipeline 22 of the electromagnetic control device 20, The oil can be smoothly input into the solenoid valve 50 to be tested.

The signal conversion device 40 (please refer to the second figure at the same time) includes a plurality of current signal conversion controllers 41, and the plurality of current signal conversion controllers 41 are connected to the electromagnetic The solenoid valve 50 to be tested on the valve seat 30 is pivotally connected to interpret the current signal of the solenoid valve 50 to be tested, and the plurality of current signal conversion controllers 41 are connected to the voltage transmitter signal conversion transmitter 42 and the voltage indicating controller 43. .

With the above configuration, as shown in the third figure, the normal solenoid valve 50 can be placed on the solenoid valve seat 30, and the solenoid valve 50 can be connected to the line 22 of the electromagnetic control device 20, and the solenoid valve can be connected. 50 is connected to the current signal conversion controller 41 of the signal conversion device 40; sets the pressure of the oil input solenoid valve 50 (eg, input pressure 12 kg/cm ² ), preset temperature of the oil (eg, 80 ° C), and flow rate ( Such as: 5 l / min), then control the oil pressure tank 10 preheating heat pump 14 to warm the oil to a preset oil temperature, the hydraulic pump 11 is the oil pressure in the oil pressure tank 10 through the electronically controlled switch The valve 21, the pressure transmitter 23 and the flow control valve 24 are sent to the solenoid valve 50, so that a signal is generated when the oil passes through the solenoid valve 50 and is transmitted to the current signal conversion controller 41 of the signal conversion device 40 to convert and form a current signal. And transmitting the current signal to the voltage transmitter signal conversion transmitter 42 to obtain a standard hydraulic curve P or a standard current curve Q (as shown in the fourth figure), and then defining the standard hydraulic curve P or the standard current curve Q The allowable error range.

嗣, the solenoid valve to be tested (not shown) is placed on the electromagnetic valve seat 40, and the solenoid valve to be tested (not shown) is connected to the pipeline 22 of the electromagnetic control device 20, and is to be The measuring solenoid valve (not shown) is connected to the current signal conversion controller 41 of the signal conversion device 40; the pressure and the oil temperature for inputting the oil into the electromagnetic valve to be tested (not shown) are set to be the normal solenoid valve 50. The input pressure value, temperature and flow rate set by the same (for example, input pressure is 12kg/cm ² , oil preset temperature is 80 ° C, flow rate is 5 l / min), preheating heat pump for controlling oil pressure tank 10 After the oil is warmed to a preset oil temperature, the hydraulic pump 11 supplies the oil in the oil pressure tank 10 to the electromagnetic valve to be tested via the electronically controlled switching valve 21, the pressure transmitter 23 and the flow control valve 24. It is not disclosed in the figure) that a signal is generated when the oil passes through the solenoid valve to be tested (not shown), and the signal is transmitted to the current signal conversion controller 41 of the signal conversion device 40 to convert and form a current signal, and The current signal is transmitted to the voltage transmitter signal conversion transmitter 42 to obtain a hydraulic curve R to be tested or The current curve S to be measured (as shown in the fifth figure).

Compare the hydraulic curve R to be tested with the standard hydraulic curve P, or compare the current curve S to be measured with the standard current curve Q; when the hydraulic curve R to be tested falls within the range of the standard hydraulic curve P and the allowable error range, or the current curve to be measured When S falls within the range of the standard current curve Q and its allowable error range, it is determined that the solenoid valve to be tested is normal; when the hydraulic curve R to be tested does not fall within the range of the standard hydraulic curve P and the allowable error range, or When the current measurement curve S does not fall within the range of the standard current curve Q and its allowable error range (as shown in the sixth figure), it is determined that the solenoid valve is abnormal, and the solenoid valve to be tested can be replaced and repaired. .

From the above, the present invention has the following advantages:

(1) Since the present invention can establish a standard curve in advance, and then compare the measured curve of the electromagnetic valve to be tested with the standard curve line, it can be known whether the solenoid valve to be tested is abnormal; therefore, the present invention can be different according to different The solenoid valves of the brand and different types of automatic transmissions are used to set different test conditions (such as: oil input pressure, oil temperature and flow rate) and establish a standard curve, which can improve the comparison with the curve of the solenoid valve to be tested. Accuracy and speed.

(2) Since some of the gearbox solenoid valves are not completely continuous fault abnormalities, they often have a single fault abnormality after several times of operation; and the repeatable and continuous solenoid valve to be tested is performed by the present invention. The oil is pumped to measure the hydraulic curve several times, and then the fault frequency of the solenoid valve to be tested is determined.

(3) In addition, since many solenoid valves are easily accumulated in the oil tower in the solenoid valve due to oil stains, the valve seat of the solenoid valve is not well sealed and there is an abnormal failure; by the present invention, the oil can be pressurized and input. The solenoid valve and the frequency of the pulse control voltage enter the solenoid valve, so that the oil scale in the solenoid valve can be shaken and shaken by the vibration method, thereby eliminating the abnormal situation that the valve seat of the solenoid valve is not good.

(4) Further, since the oil pressure tank 10 of the present invention is connected with a back pressure control valve 13, it can be used to adjust the pressure in the oil delivery pipe 12, so that the oil fed to the solenoid valve is returned to the oil pressure tank 10. In addition, the oil reuse rate can be improved, the cost can be saved, and the polluter can be reduced.

(5) In addition, since the present invention is provided with a plurality of electronically controlled on-off valves 21 and pressure transmitters 23, not only can one or more solenoid valves be tested abnormally according to requirements, but also can be adjusted to control the rise and fall of the voltage thereof. Time, in order to simulate the execution command of the driving computer, to test the actuation and abnormal conditions of the solenoid valve.

Therefore, it can be seen from the above that the electromagnetic valve abnormality detecting method and the system thereof of the gearbox of the present invention can quickly and effectively determine whether the electromagnetic valve to be tested is abnormal, and can be excluded for the abnormality caused by the accumulation of the oil stain; therefore, Compared with the conventional method of using the experience to judge whether the solenoid valve is abnormal, the present invention has a high degree of novelty and progress, and indeed it has never been seen before, and it is in accordance with the requirements of the invention patent. The law proposes an application for an invention patent and prays for a patent prayer.

However, the above description is only one of the possible embodiments of the present invention, and the scope of the present invention is not limited thereto, and equivalent changes and modifications according to the specification and patent application of the present invention should still belong to the present invention. Within the scope covered.

10‧‧‧ oil pressure tank

11‧‧‧Hydraulic pump

12‧‧‧ Oil delivery tube

13‧‧‧Back pressure control valve

14‧‧‧Preheating heat pump

15‧‧‧Filter

20‧‧‧Electromagnetic control device

21‧‧‧Electronic control switch valve

22‧‧‧pipes

23‧‧‧ Pressure transmitter

24‧‧‧Flow control valve

30‧‧‧Solenoid seat

40‧‧‧Signal conversion device

41‧‧‧ Current signal conversion controller

42‧‧‧Voltage Transmitter Signal Conversion Transmitter

43‧‧‧Voltage indicating controller

50‧‧‧ solenoid valve

The first figure is a schematic flow chart of the detection method of the present invention.

The second drawing is a configuration diagram of the detection system of the present invention.

The third figure is a structural diagram of the detection system of the present invention, and a schematic diagram of oil transportation for testing the electromagnetic valve.

The fourth figure is a normal hydraulic curve and current curve obtained by testing the solenoid valve of the present invention.

The fifth figure is an abnormal hydraulic curve and current curve obtained by testing the electromagnetic valve of the present invention.

The sixth figure is a comparison chart of the abnormal hydraulic curve and current curve of the present invention and the normal hydraulic curve and current curve.

Claims (3)

A method for detecting an abnormality of a solenoid valve of a gearbox comprises the following steps: Step 1: setting a test condition of an input pressure of the oil input solenoid valve, a preset temperature of the oil, and a flow rate; and setting an input pressure of the oil input solenoid valve in advance, The temperature and flow rate of the oil make this condition the test condition for the subsequent testing operation; Step 2: Input the oil into the normal solenoid valve according to the test conditions of step 1 to generate the standard hydraulic curve and current curve and define the allowable error range. Take a normal solenoid valve and adjust the control solenoid valve according to the test conditions such as step 1 input pressure, oil preset temperature and flow rate, and change the oil passage in the automatic transmission to generate a standard hydraulic curve and standard. The current curve defines the allowable error range of the standard hydraulic curve and the standard current curve; Step 3: According to the test condition of step 1, the oil is input into the solenoid valve to be tested, thereby generating the hydraulic curve and the current curve to be tested; Test conditions such as pressure, oil preset temperature and flow rate, input oil into the solenoid valve to be tested And adjust the control solenoid valve to change, change the oil path in the automatic transmission to generate a hydraulic curve to be tested and the current curve to be tested; Step 4: the hydraulic curve to be tested and the current curve to be tested and the standard The hydraulic curve and the standard current curve are compared; the hydraulic curve to be tested and the current curve to be measured generated by the solenoid valve to be tested are compared with the standard The measured hydraulic curve and the standard current curve are compared to know the difference between the hydraulic curve to be tested, the current curve to be tested and the standard hydraulic curve and the standard current curve; Step 5: When the hydraulic curve to be tested and the current curve to be tested fall within the standard respectively When the hydraulic curve, the standard current curve and its allowable error range are within the range, it is determined that the solenoid valve to be tested is normal; and when the hydraulic curve to be tested or the current curve to be tested does not fall on the standard hydraulic curve, the standard current curve and its allowable When the error range is within the range, it is determined that the solenoid valve to be tested is abnormal; thereby, the method for detecting whether the solenoid valve is abnormal or not is provided quickly and effectively. A solenoid valve abnormality detecting system for a gearbox includes an oil pressure tank, an electromagnetic control device, a solenoid valve seat and a signal conversion device; wherein: the oil pressure tank is used for storing oil, and the oil pressure tank is connected with a hydraulic pump The hydraulic pump can pressurize and store the oil stored in the oil pressure tank through the oil delivery pipe to the electromagnetic control device, and the oil pressure tank is connected with a back pressure control valve, thereby reducing the input of the oil pressure pump. Pressure, so that the oil can be returned to the oil pressure tank through the back pressure control valve; and the oil pressure tank is connected with a preheating heat pump to heat the oil in the oil pressure tank; the electromagnetic control device includes a plurality of electronically controlled on-off valves, the plurality of electronically controlled on-off valves being connected to the hydraulic pump by a pipeline, the plurality of electronically controlled on-off valves being pivotally connected to the solenoid valve to be tested, thereby controlling the actuation of the solenoid valve to be tested, And the electricity The sub-control switch valve is connected with a pressure transmitter to adjust the pressure of the oil in the control pipeline; the electromagnetic control device is provided with a flow control valve for controlling the flow of the oil input solenoid seat; the electromagnetic valve seat is used To provide the electromagnetic valve to be tested, to provide a stable connection between the electromagnetic valve to be tested and the electromagnetic control device, so that the oil can be smoothly input into the solenoid valve to be tested; the signal conversion device includes a plurality of current signals a switching controller, the plurality of current signal conversion controllers are pivotally connected to the electromagnetic valve to be tested on the electromagnetic valve seat, thereby interpreting the current signal of the electromagnetic valve to be tested, and the plurality of current signal conversion controllers are connected with the voltage transmitter The signal conversion transmitter and the voltage indicating controller; thereby, providing a detecting method capable of quickly and effectively interpreting whether the solenoid valve is abnormal and a detecting system thereof. The solenoid valve abnormality detecting system of the gearbox according to claim 2, wherein a filter is disposed between the oil pressure tank and the hydraulic pump.