CN116639085A - Control method for wake-up washing valve of P2 structure hybrid power transmission - Google Patents
Control method for wake-up washing valve of P2 structure hybrid power transmission Download PDFInfo
- Publication number
- CN116639085A CN116639085A CN202310415414.XA CN202310415414A CN116639085A CN 116639085 A CN116639085 A CN 116639085A CN 202310415414 A CN202310415414 A CN 202310415414A CN 116639085 A CN116639085 A CN 116639085A
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- valve
- electromagnetic valve
- tcu
- pressure electromagnetic
- flushing
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- 238000005406 washing Methods 0.000 title claims abstract description 58
- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000011010 flushing procedure Methods 0.000 claims abstract description 44
- 230000008569 process Effects 0.000 claims abstract description 4
- 230000002618 waking effect Effects 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 5
- 230000003749 cleanliness Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 6
- 239000013049 sediment Substances 0.000 description 6
- 230000005059 dormancy Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- -1 and at the same time Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/62—Other vehicle fittings for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S5/00—Servicing, maintaining, repairing, or refitting of vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a control method for a wake-up washing valve of a P2 structure hybrid power transmission, which comprises the following steps that S1, TCU supports CAN wake-up function and is waken up in advance; s2, the TCU receives and processes an input signal; s3, the TCU wakes up the electronic pump to establish the main pressure of the gearbox system; s4, performing first flushing on the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2, and flushing the clutch pressure electromagnetic valve K0; s5, performing first flushing on the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1, and flushing the clutch pressure electromagnetic valve K0; s6, the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 are subjected to secondary flushing, and the clutch pressure electromagnetic valve K0 is flushed. The invention can rapidly wash all the heavy solenoid valves once, and wash the solenoid valves for multiple times under the condition of sufficient time, thereby ensuring the cleanliness of the solenoid valves and improving the response capability of the solenoid valves.
Description
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to a control method for a wake-up washing valve of a P2 structure hybrid power transmission.
Background
The P2 structure hybrid transmission is widely used in various vehicle types, and as the transmission is operated for a long time, chips and impurities in the transmission oil are increased, and when the hydraulic valve body is not used for a long time, the malfunction of the electromagnetic valve body may occur. Firstly, when standing oil leaks through a valve gap, sediment is accumulated, the sediment cannot be lost, and meanwhile air exists in the sediment to interfere the normal operation of the electromagnetic valve; secondly, when the control system needs to request the action of the electromagnetic valve, the spring force in the electromagnetic valve is difficult to push the valve core to separate from the stop end due to long-time rest, so that oil passes through the stop end, and the electromagnetic valve is blocked. Therefore, after the solenoid valve is deactivated for a long time, the solenoid valve needs to be activated to flush out the sediment, and at the same time, air in the hydraulic system of the transmission is discharged to fill the oil passage with oil, however, some sediment is retained in the gap of the solenoid valve, and the solenoid valve needs to swing back and forth to move the sediment. The control system should ensure that the solenoid valve is flushed and cleaned when it is not in use for a long period of time, improving the response performance of the transmission.
Disclosure of Invention
The technical scheme for solving the technical problems is as follows:
a control method for a P2 structure hybrid power transmission wakeup washing valve comprises the following steps:
s1, a TCU supports a CAN wake-up function and is waken up in advance;
s2, the TCU receives and processes the input signal, judges whether the condition of entering the wake-up valve washing function is met according to the signal received by the TCU, and if so, enters S3;
s3, the TCU wakes up the electronic pump to establish the main pressure of the gearbox system;
s4, the TCU controls the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to carry out primary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, and meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s5, the TCU controls the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to carry out primary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, and meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s6, the TCU controls the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to carry out secondary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s7, the TCU controls the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to carry out secondary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited.
Further, the S1 includes that the TCU monitors a complete vehicle CAN signal, and when the driver key unlocks the vehicle door to show the driving intention, the TCU receives an activation signal sent by the complete vehicle CAN and wakes up in advance to enter the working mode.
Further, the step S2 specifically includes:
s2.1, detecting an electric signal on the whole vehicle KL 15;
s2.2, detecting a whole vehicle charging state signal;
s2.3, detecting a power source rotating speed, an input shaft rotating speed and a vehicle speed signal;
s2.4, detecting a main pressure signal of the transmission;
s2.5, detecting a pressure signal of the clutch K0.
Further, the clutch pressure solenoid valve K1 and the gear shifting pressure solenoid valve PV2 of the S4 and the S6 are subjected to the first flushing mode and the second flushing mode to be consistent; s5 and S7, the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 are subjected to primary flushing and secondary flushing in a consistent mode; the flushing mode of the clutch pressure solenoid valve K0 is independent.
According to the control method for waking up the washing valve of the P2 structure hybrid power transmission, firstly, the time before a driver gets on a vehicle to start the vehicle is utilized to wash the electromagnetic valve, the electromagnetic valve clamping caused by long-time stopping is effectively prevented, secondly, signals such as a power source rotating speed signal, a vehicle speed signal, an input shaft rotating speed signal, an overall vehicle KL15 power-on signal, an overall vehicle charging state and the like are utilized as judging conditions, and meanwhile, the electromagnetic valve is grouped during washing, so that the safety of the overall vehicle during washing the valve can be comprehensively ensured. The control method for waking up the washing valve of the P2 structure hybrid power transmission can quickly wash all the heavy electromagnetic valves once, and wash the electromagnetic valves for multiple times under the condition of sufficient time, thereby ensuring the cleanliness of the electromagnetic valves, improving the response capability of the electromagnetic valves and facilitating the daily maintenance of the transmission.
Drawings
FIG. 1 is a flow chart of a control method for waking up a wash valve in a P2 architecture hybrid transmission of the present invention.
Detailed Description
The invention is further described with reference to the drawings and detailed description.
As shown in fig. 1, a control method for waking up a wash valve of a P2 structure hybrid transmission includes the following steps:
s1, a TCU supports a CAN wake-up function and is waken up in advance, wherein the TCU is a transmission controller;
s2, the TCU receives and processes the input signal, judges whether the condition of entering the wake-up valve washing function is met according to the signal received by the TCU, and if so, enters S3;
s3, the TCU wakes up the electronic pump to establish the main pressure of the gearbox system;
s4, the TCU controls the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to carry out primary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, and meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s5, the TCU controls the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to carry out primary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, and meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s6, the TCU controls the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to carry out secondary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s7, the TCU controls the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to carry out secondary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited.
Preferably, the step S1 includes that the TCU monitors a complete vehicle CAN signal, and when the driver key unlocks the vehicle door and shows the driving intention, the TCU receives an activation signal sent by the complete vehicle CAN and wakes up in advance to enter the working mode.
Preferably, the input signal described in S2 includes:
s2.1, detecting an electric signal on the whole vehicle KL 15;
s2.2, detecting a whole vehicle charging state signal;
s2.3, detecting a power source rotating speed, an input shaft rotating speed and a vehicle speed signal;
s2.4, detecting a main pressure signal of the transmission;
s2.5, detecting a pressure signal of the clutch K0.
Preferably, the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2 of S4 and S6 perform the first flushing and the second flushing in the same manner; s5 and S7, the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 are subjected to primary flushing and secondary flushing in a consistent mode; the flushing mode of the clutch pressure solenoid valve K0 is independent.
In this embodiment, the step S2 is to determine whether the condition for entering the wake-up valve washing function is satisfied according to the following conditions:
1. the method comprises the steps that the whole vehicle KL15 is subjected to power-on signal detection, the KL15 is a hard wire wake-up signal of the whole vehicle, the fact that a driver is ignited to drive is indicated at the moment, a certain time is consumed for the operation of a valve washing function, the whole vehicle needs to take the intention of the driver as a first priority and respond to the intention of the driver preferentially, so that the driving feeling of the driver is improved, the valve washing function needs to be skipped or stopped at the moment, and the normal driving state is entered;
2. detecting a charging state signal of the whole vehicle, namely judging whether the driver has an intention of driving or not if the whole vehicle is being charged, if the TCU is awakened, sending the charging state signal of the whole vehicle to the TCU when the TCU is being charged, indicating that the driver has no intention of driving, and discarding the electromagnetic valve cleaning in this time to avoid the energy consumption of the vehicle;
3. and detecting the power source rotating speed, the input shaft rotating speed and the vehicle speed signal, judging the input shaft rotating speed, the power source rotating speed and the vehicle speed based on the consideration of functional safety, wherein the power source rotating speed comprises a motor rotating speed and an engine rotating speed, so that the power on and power off under the abnormal condition of the whole vehicle are avoided, and unexpected movement caused during the valve washing function is avoided. After the TCU is awakened, if the whole vehicle is in the states of power source rotating speed, vehicle speed and the like, the valve washing function can transmit torque by combining a clutch, so that unexpected movement of a driver is caused, and safety accidents can possibly occur, so that the power source rotating speed, the input shaft rotating speed and the vehicle speed signal detection are required to be detected before the valve washing function is awakened to operate;
4. the main pressure signal of the speed changer is detected, when the TCU is awakened again after dormancy, the main pressure can be used for carrying out preliminary judgment, when the main pressure is higher than a threshold value, the hydraulic system of the speed changer can be judged to be just after working, at the moment, the response capacity of the electromagnetic valve is not slow due to the response generated by long-time static state, and the like, so that the valve body cleaning function can be omitted for avoiding unnecessary energy consumption of the TCU, and if the main pressure is lower than the threshold value, the electromagnetic valve is required to be washed for avoiding the generation of the electromagnetic valve problem;
5. the detection of the pressure signal of the clutch K0 and the detection of the pressure of the clutch K0 are complementary detection of the main pressure signal, and the purpose of the detection is to detect whether the main pressure of the current transmission system is really lower than a threshold value or not, so that misjudgment caused by failure of a main pressure sensor is avoided, unnecessary energy consumption is avoided, and meanwhile, the main pressure sensor is diagnosed.
In this embodiment, the specific implementation method of the step S3 is as follows: the TCU sends a signal through the CAN gateway, wakes up the electronic pump to enable the electronic pump to work normally, and sends a rotating speed required for quickly establishing main pressure to enable the electronic pump to rotate, so that the main pressure of a system of the transmission is quickly established.
In this embodiment, in order to achieve rapid flushing of the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2, the flushing modes of the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2 are as follows:
1. the current of the gear shifting flow electromagnetic valves FV2 and FV4 is controlled to the flow 0 point position, so that unexpected gear shifting is avoided when the gear shifting pressure electromagnetic valve PV2 is washed;
2. after ensuring that the currents of the shift flow solenoid valves FV2 and FV4 reach the flow 0 point position, simultaneously raising the currents of the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2 to a preset value with a certain slope;
3. after the currents of the clutch pressure solenoid valve K1 and the gear shifting pressure solenoid valve PV2 rise to preset values, maintaining the preset values for a period of time;
4. after the currents of the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 are maintained for a period of time, simultaneously reducing the currents of the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to 0 with a certain slope;
5. after the completion of the flushing of the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2, the currents of the shift flow solenoid valves FV2 and FV4 are controlled to 0.
The flushing setting parameter calibration table of the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2 is shown as follows
In this embodiment, in order to achieve rapid flushing of the clutch pressure solenoid valve K2 and the shift pressure solenoid valve PV1, the specific flushing modes of the clutch pressure solenoid valve K2 and the shift pressure solenoid valve PV1 are as follows:
1. the current of the gear shifting flow electromagnetic valves FV1 and FV3 is controlled to the flow 0 point position, so that unexpected gear shifting is avoided when the gear shifting pressure electromagnetic valve PV2 is washed;
2. after ensuring that the currents of the shift flow solenoid valves FV1 and FV3 reach the flow 0 point position, simultaneously raising the currents of the clutch pressure solenoid valve K2 and the shift pressure solenoid valve PV1 to a preset value with a certain slope;
3. after the currents of the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 rise to a preset value, maintaining the preset value for a period of time;
4. after the currents of the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 are maintained for a period of time, simultaneously reducing the currents of the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to 0 with a certain slope;
5. after the completion of the flushing of the clutch pressure solenoid valve K2 and the shift pressure solenoid valve PV1, the currents of the shift flow solenoid valves FV1 and FV3 are controlled to 0.
The flushing setting parameter calibration table of the clutch pressure solenoid valve K2 and the shift pressure solenoid valve PV1 is shown as follows
In this embodiment, to achieve rapid flushing of the clutch pressure solenoid valve K0, the flushing of the clutch pressure solenoid valve K0 is specifically performed as follows:
1. the synchronous clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 rise the current of the clutch pressure electromagnetic valve K0 to a preset value with a certain slope, and after the current rises to the preset value, the current is maintained for a certain time, and then the current is lowered to 0 with a certain slope;
2. circulating the step 1, raising the current of the clutch pressure electromagnetic valve K0 to a preset value by a certain slope through the synchronous clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2, maintaining a certain time after the current is raised to the preset value, and then lowering the current to 0 by a certain slope;
the flushing setting parameter calibration table for the clutch pressure solenoid valve K0 is shown below
3. After the current valve washing of the clutch K0 is finished, requesting the pressure of the clutch K0 to rise to a preset value with a certain slope;
after the K0 pressure rises to a preset value, requesting the clutch K0 pressure to drop to the preset value with a certain slope;
5. and 7.3 and 7.4, performing cycle counting by using a counter, and ending the valve washing of the clutch K0 after the counter is larger than a preset value.
The flushing setting parameter calibration table for the clutch pressure solenoid valve K0 is shown below
In this embodiment, when any one of the above conditions is triggered, the valve washing function should be stopped immediately, and all the solenoid valves should be returned to the initial state, specifically as follows:
1. the whole car key is electrified to indicate that a driver is about to drive during the valve washing awakening period, if the valve washing function is continued, the whole car cannot enter a normal driving state, the whole car driving feeling of the driver is affected, and the valve washing function is stopped awakening at the moment.
And 2. The TCU dormancy signal is triggered, the TCU receives the whole vehicle dormancy signal from the whole vehicle CAN, the driver is informed to leave the vehicle, the valve washing function is continued at the moment, the whole vehicle is not beneficial to running, the whole vehicle dormancy definition is not met, the running of the whole vehicle gateway is influenced, the valve washing function is stopped, and the TCU enters a dormancy state and waits for the next awakening.
3. The main pressure of the transmission system is too low, the condition of too low main pressure occurs during valve washing, the excessive leakage of the transmission system is shown, the hydraulic system is problematic, when the main pressure is too low, hydraulic oil does not wash the electromagnetic valve, only the electromagnetic valve is simply operated, the electromagnetic valve is not washed, the valve washing function is stopped at the moment, and the transmission hydraulic system is detected.
4. When the power source rotating speed, the vehicle speed and the input shaft rotating speed are detected, and the valve washing function is awakened based on the consideration of function safety, the whole vehicle is in a static state under normal conditions, and under the conditions of the rotating speed and the vehicle speed, torque transmission can possibly occur, so that the valve washing function is not required to be awakened by a driver, and the valve washing function is immediately stopped at the moment in order to avoid the occurrence of safety accidents.
Finally, it should be explained that: the above embodiments are merely illustrative of the preferred embodiments of the present invention, and not limiting the scope of the present invention; although the invention has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions.
Claims (4)
1. A control method for a wake-up washing valve of a P2 structure hybrid power transmission is characterized by comprising the following steps:
s1, a TCU supports a CAN wake-up function and is waken up in advance;
s2, the TCU receives and processes the input signal, judges whether the condition of entering the wake-up valve washing function is met according to the signal received by the TCU, and if so, enters S3;
s3, the TCU wakes up the electronic pump to establish the main pressure of the gearbox system;
s4, the TCU controls the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to carry out primary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, and meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s5, the TCU controls the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to carry out primary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, and meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s6, the TCU controls the clutch pressure electromagnetic valve K1 and the gear shifting pressure electromagnetic valve PV2 to carry out secondary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited;
s7, the TCU controls the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 to carry out secondary flushing, the TCU controls the clutch pressure electromagnetic valve K0 to flush, meanwhile, the TCU monitors the valve washing termination condition, and when the termination condition is met, the valve washing function is immediately exited.
2. The control method for waking up a washing valve of a P2 structure hybrid transmission according to claim 1, wherein S1 includes that the TCU monitors a complete vehicle CAN signal, and when a driver key unlocks a vehicle door to indicate a driving intention, the TCU receives an activation signal sent by the complete vehicle CAN and wakes up in advance to enter a working mode.
3. The control method for a P2 architecture hybrid transmission wakeup wash valve of claim 1, wherein said input signal in S2 comprises:
s2.1, detecting an electric signal on the whole vehicle KL 15;
s2.2, detecting a whole vehicle charging state signal;
s2.3, detecting a power source rotating speed, an input shaft rotating speed and a vehicle speed signal;
s2.4, detecting a main pressure signal of the transmission;
s2.5, detecting a pressure signal of the clutch K0.
4. The control method for the wake-up washing valve of the P2 structure hybrid transmission according to claim 1, wherein the first flushing and the second flushing are performed by the clutch pressure solenoid valve K1 and the shift pressure solenoid valve PV2 of the S4 and the S6 respectively; s5 and S7, the clutch pressure electromagnetic valve K2 and the gear shifting pressure electromagnetic valve PV1 are subjected to primary flushing and secondary flushing in a consistent mode; the flushing mode of the clutch pressure solenoid valve K0 is independent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310415414.XA CN116639085A (en) | 2023-04-18 | 2023-04-18 | Control method for wake-up washing valve of P2 structure hybrid power transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310415414.XA CN116639085A (en) | 2023-04-18 | 2023-04-18 | Control method for wake-up washing valve of P2 structure hybrid power transmission |
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| CN116639085A true CN116639085A (en) | 2023-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115782821A (en) * | 2022-11-25 | 2023-03-14 | 重庆长安汽车股份有限公司 | Static valve washing method and system for electromagnetic valve of hybrid power transmission |
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2023
- 2023-04-18 CN CN202310415414.XA patent/CN116639085A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115782821A (en) * | 2022-11-25 | 2023-03-14 | 重庆长安汽车股份有限公司 | Static valve washing method and system for electromagnetic valve of hybrid power transmission |
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