A method of unmanned DPF regeneration

Abstract

The application discloses a method for unmanned DPF regeneration. The application detects state data in sequence automatically, including vehicle speed, pedal state, gear state, hand brake state, engine state, water temperature in the water tank, and vehicle regeneration prohibition lamp state, etc., identifies whether the state data meets the condition of starting the DPF regeneration function, and when the requirement is not met, the system sends corresponding state control instructions to execute the DPF regeneration function, reduces the manual control link in the traditional DPF regeneration operation process, avoids the operation influence caused by the unfamiliarity of the operator with the DPF function process, and improves the operation efficiency of the DPF regeneration function.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automatic control technology of automobile, and particularly relates to a method for unmanned DPF regeneration. BACKGROUND

[0002] Electronic and automatic control modules of contemporary automobiles are increasingly common, and people's understanding of automobile diagnosis is also increasingly high. Due to the increasing cost of labor, some people choose to repair vehicles by themselves to reduce maintenance costs. In the process of performing DPF regeneration, manpower is needed to cooperate with the vehicle to make some state changes to meet the requirements for starting DPF regeneration, which leads to the lack of understanding of the DPF regeneration function, resulting in the inability to perform the function or failure to perform.

[0003] Therefore, the prior art has defects and needs to be improved. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art and provide a method for unmanned DPF regeneration.

[0005] The technical scheme of the present application is as follows: a method for unmanned DPF regeneration is provided, characterized by comprising the following steps:

[0006] Step 1: the user inserts the diagnostic device into the OBD interface of the vehicle and selects the DPF regeneration function to be performed;

[0007] Step 2: the software communicates with the vehicle through the OBD interface, detects the vehicle data state, and detects whether each item of data meets the requirements for DPF regeneration; the vehicle data state includes vehicle speed, pedal state, gear state, hand brake state, engine state, water temperature in the water tank, and vehicle regeneration prohibition lamp state;

[0008] Step 3: when one of the vehicle data states does not meet the requirements for DPF regeneration, an execution instruction corresponding to the item is sent to the vehicle to make the corresponding vehicle data state meet the requirements for DPF regeneration;

[0009] Step 4: when it is detected that the vehicle data states all meet the requirements, the DPF regeneration function is performed, and the execution result is displayed on the diagnostic device.

[0010] Further, the specific steps of step 2 are as follows:

[0011] Step 2.1: check whether the vehicle regeneration prohibition lamp is always on, if it is always on, prompt the vehicle that regeneration is prohibited through the diagnostic device, and the DPF regeneration function cannot be performed, ending the program; if the vehicle regeneration prohibition lamp is not always on, enter the check-execution flow;

[0012] Step 2.2: Check whether the current vehicle speed is 0, if yes, enter the next check process; if not, send the control command to execute the vehicle stationary, until the vehicle speed is 0, enter the next check process;

[0013] Step 2.3: Check whether the accelerator pedal is in the brake state, if not, enter the next check process; if yes, send the instruction to release the accelerator pedal;

[0014] Step 2.4: Check whether the brake pedal is in the brake state, if not, enter the next check process; if yes, send the instruction to release the brake pedal;

[0015] Step 2.5: Check whether the clutch pedal is in the brake state, if not, enter the next check process; if yes, send the instruction to release the clutch pedal;

[0016] Step 2.6: Check whether the gear is in the neutral position, if yes, enter the next check process; if not, send the control instruction to set the gearbox gear to neutral;

[0017] Step 2.7: Check whether the handbrake is in the brake state, if yes, enter the next check process; if not, send the control instruction to execute the handbrake brake;

[0018] Step 2.8: Check whether the engine is started and in idle state, if yes, enter the next check process; if not, send the instruction to start the engine idle;

[0019] Step 2.9: When all vehicle state data in steps 2.1-2.8 meet the requirements, and the water temperature is detected to be above 40℃, execute the DPF regeneration function.

[0020] By using the above scheme, the system automatically detects various state data, and when the system identifies the items that do not meet the requirements, the system can send corresponding state control instructions to execute the DPF regeneration function, thereby avoiding the operation influence caused by the operator's unfamiliarity with the DPF function process, and improving the operation efficiency of the DPF regeneration function. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The flowchart of the present application is shown. DETAILED DESCRIPTION

[0022] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0023] Please refer to Figure 1 The present application provides a method for unmanned DPF regeneration, characterized by comprising the following steps:

[0024] Step 1: User inserts the diagnostic device into the vehicle OBD interface, selects the DPF regeneration function to be performed.

[0025] Step 2: The software communicates with the vehicle through the OBD interface, detects the vehicle data state, and detects whether each data meets the requirements for DPF regeneration; the vehicle data state includes: vehicle speed, pedal state, gear state, hand brake state, engine state, water temperature in the water tank, and vehicle regeneration prohibition lamp state. The specific steps are as follows:

[0026] Step 2.1: Check whether the current vehicle regeneration prohibition lamp is always on. If it is always on, the diagnostic device prompts that the vehicle prohibits regeneration and the DPF regeneration function cannot be performed, and the program ends. If the vehicle regeneration prohibition lamp is not always on, proceed to the next check-execution process.

[0027] Step 2.2: Detect whether the current vehicle speed is 0. If it is, proceed to the next check process. If it is not, send a command to control the vehicle to be stationary until the vehicle speed is 0, and proceed to the next check process.

[0028] Step 2.3: Check whether the accelerator pedal is in the braking state. If it is not, proceed to the next check process. If it is, send an instruction to release the accelerator pedal.

[0029] Step 2.4: Check whether the brake pedal is in the braking state. If it is not, proceed to the next check process. If it is, send an instruction to release the brake pedal.

[0030] Step 2.5: Check whether the clutch pedal is in the braking state. If it is not, proceed to the next check process. If it is, send an instruction to release the clutch pedal.

[0031] Step 2.6: Check whether the gear is in the neutral position. If it is, proceed to the next check process. If it is not, send a control instruction to set the transmission gear to neutral.

[0032] Step 2.7: Check whether the hand brake is in the braking state. If it is, proceed to the next check process. If it is not, send a control instruction to execute the hand brake braking.

[0033] Step 2.8: Check whether the engine is started and in the idle state. If it is, proceed to the next check process. If it is not, send a command to start the engine and run at idle.

[0034] Step 2.9: When all vehicle state data in steps 2.1-2.8 meet the requirements and the water temperature is detected to be above 40°C, perform the DPF regeneration function.

[0035] Step 3: When the vehicle data state has one item that does not meet the DPF regeneration requirement, the corresponding item is executed by sending the corresponding item to the vehicle, so that the corresponding item vehicle data state meets the DPF regeneration requirement.

[0036] Step 4: When it is detected that the vehicle data state meets the requirement, the DPF regeneration function is performed, and the execution result is displayed on the diagnostic device.

[0037] In the embodiment provided by the application, when the user selects the DPF regeneration function, the device will first send an information reading instruction:

[0038] 1. Send 22 0D 01 to read whether the vehicle regeneration prohibition lamp is constant, and the vehicle returns 62 0D 01 0001. The fifth byte 01 in the reply instruction is that the regeneration prohibition lamp is always on, and 00 is that the regeneration prohibition lamp is not on.

[0039] 2. Send 22 01 01 to read the vehicle speed, and the vehicle returns 62 01 01 02 55. The fourth and fifth bytes in the reply instruction are vehicle speed operation data bytes. If the two bytes are not 0, it means that the current vehicle is running, and the vehicle speed will be 0 by sending 2F01 01 00 00 instruction.

[0040] 3. Send 22 21 04 instruction to read whether the vehicle accelerator pedal is braked, and the vehicle returns 62 21 0400. The fourth byte in the reply instruction is 0, indicating that the accelerator pedal is not braked, and 01 indicates that the accelerator pedal is braked.

[0041] 4. Send 22 22 04 instruction to read whether the vehicle brake pedal is braked, and the vehicle returns 62 22 0400. The fourth byte in the reply instruction is 0, indicating that the brake pedal is not braked, and 01 indicates that the brake pedal is braked.

[0042] 5. Send 22 23 01 instruction to read whether the vehicle clutch pedal is braked.

[0043] If the vehicle returns 7F 22 12 23 01, the reply instruction 7F indicates that the vehicle does not configure the clutch pedal, and the vehicle is an automatic transmission vehicle;

[0044] If the vehicle returns 62 23 01 00, the fourth byte in the reply instruction is 0, indicating that the clutch pedal is not braked, and 01 indicates that the clutch pedal is braked.

[0045] 6. Send 22 06 00 instruction to read the vehicle gear. The vehicle returns 62 06 00 00. The fourth bit 00 in the reply data indicates that the vehicle is in park, 01 indicates R, 02 indicates N, 03 indicates D, 11 indicates manual 1, 12 indicates manual 2, and so on. 3, 4, 5, etc.

[0046] 7. Send 22 2C 0D to read the vehicle hand brake state, the vehicle replies 62 2C 0D 00, the fourth bit of the reply data 00 indicates that the vehicle electronic hand brake is not braked, and 01 indicates that the vehicle electronic hand brake is braked.

[0047] 8. Send 22 0D 02 to read the vehicle transmitter speed, and the vehicle replies 62 0D 02 XX XX XX 03 25, the seventh byte of the reply data, and the eighth byte is the engine speed calculation data, and the specific algorithm is 3*255+27=802, if the calculation value is within 600-1000, it indicates that the transmitter is in an idle state, and if it is out of the range, it indicates that the transmitter is not in an idle state.

[0048] If the engine is not in an idle state, send 2F 0D 02 XX XX XX 03 00 to set the vehicle to an idle state.

[0049] 9. After the above state check is correct, send 31 01 03 01 to instruct to start the regeneration of the vehicle, and after about half an hour, the soot on the vehicle filter can be burned to reach the standard emission value. And prompt the success of the regeneration function.

[0050] The existing DPF function software or device on the market is executed in a man-machine interactive mode, and the operator needs to confirm various state data of the vehicle, and the operator needs to operate the vehicle respectively to make the various state data meet the requirements of DPF regeneration. The present application automatically detects various state data through the system, and when the identified items do not meet the requirements, the system can send corresponding state control instructions to execute the DPF regeneration function, thereby avoiding the influence of the operation caused by the operator's unfamiliarity with the DPF function process, and improving the efficiency of the DPF regeneration function operation.

[0051] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of unmanned DPF regeneration, characterized by, The method comprises the following steps: Step 1: the user inserts the diagnostic device into the OBD interface of the vehicle, and selects the DPF regeneration function to be executed; Step 2: the software communicates with the vehicle through the OBD interface, detects the vehicle data state, and detects whether each item of data meets the requirements of DPF regeneration; the vehicle data state comprises vehicle speed, pedal state, gear state, handbrake state, engine state, water temperature in the water tank, and vehicle regeneration prohibition lamp state; Step 3: when one item of the vehicle data state does not meet the requirements of DPF regeneration, the corresponding item of execution instruction is sent to the vehicle, so that the corresponding item of vehicle data state meets the requirements of DPF regeneration; Step 4: when it is detected that all the vehicle data states meet the requirements, the DPF regeneration function is executed, and the execution result is displayed on the diagnostic device; The specific steps of step 2 are as follows: Step 2.1: check whether the vehicle regeneration prohibition lamp is always on; if yes, the diagnostic device prompts that the vehicle prohibits regeneration, and the DPF regeneration function cannot be executed, and the program ends; if not, the check-execution process is entered; Step 2.2: detect whether the current vehicle speed is 0; if yes, the next check process is entered; if not, the execution control vehicle stationary command is sent until the vehicle speed is 0, and the next check process is entered; Step 2.3: check whether the accelerator pedal is in the braking state; if not, the next check process is entered; if yes, the instruction to release the accelerator pedal is sent; Step 2.4: check whether the brake pedal is in the braking state; if not, the next check process is entered; if yes, the instruction to release the brake pedal is sent; Step 2.5: check whether the clutch pedal is in the braking state; if not, the next check process is entered; if yes, the instruction to release the clutch pedal is sent; Step 2.6: check whether the gear is in the neutral position; if yes, the next check process is entered; if not, the control instruction to set the gear to the neutral position is sent; Step 2.7: check whether the handbrake is in the braking state; if yes, the next check process is entered; if not, the control instruction to execute the handbrake braking is sent; Step 2.8: check whether the engine is started and in the idling state; if yes, the next check process is entered; if not, the instruction to start the engine idling is sent; Step 2.9: when all the vehicle state data in steps 2.1-2.8 meet the requirements, and the water temperature is detected to be higher than 40℃, the DPF regeneration function is executed.

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