CN105114488A - Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof - Google Patents
Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof Download PDFInfo
- Publication number
- CN105114488A CN105114488A CN201510568169.1A CN201510568169A CN105114488A CN 105114488 A CN105114488 A CN 105114488A CN 201510568169 A CN201510568169 A CN 201510568169A CN 105114488 A CN105114488 A CN 105114488A
- Authority
- CN
- China
- Prior art keywords
- engine
- hydrodynamic retarder
- speed
- bcu
- water temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a water temperature control method of an AMT vehicle type hydraulic retarder and a control method thereof, which comprise a vehicle body control unit BCU, an engine electronic control unit ECU, an automatic transmission electronic control unit TCU, a gear box executing mechanism and a hydraulic retarder, wherein the engine electronic control unit ECU, the automatic transmission electronic control unit TCU and the hydraulic retarder are respectively connected to the vehicle body control unit BCU. According to the invention, the beneficial effects are: the reliable safety performance when a vehicle is driven downhill is ensured; at the same time, when an engine is ensured to work within reasonable work temperature range, the engine fuel economy performance is ensured; when the retarder has sufficient brake torque during downhill, the damage to a friction piece is reduced by slight using or disusing a main brake to brake; at the same time, a water tank watering the friction piece during downhill can be eliminated, thus more goods can be carried; and the value at the safety and economy aspects is high.
Description
Technical field
The present invention relates to the water temperature control technique field of AMT vehicle hydrodynamic retarder, particularly a kind of temperature control method of water of AMT vehicle hydrodynamic retarder and control system thereof.
Background technique
The Security of current vehicle traveling is more and more subject to everybody attention, and the also application of hydrodynamic retarder on heavy-duty commercial vehicle and passenger car is more and more extensive.Concerning commercial car, the hydrodynamic retarder of assembling can abandon the water tank of trickle on friction plate, adds the weight carried cargo, and decreases the wearing and tearing of friction plate, adds economic performance and Safety performance; Passenger car, reduces the wearing and tearing of friction plate, ensures passenger survival safety, same increase economic performance and Safety performance.But retarder is when braking, a large amount of heat can be produced, especially when descending, these heats are distributed by the refrigerating module of water lines by motor, if but the heat radiation power of refrigerating module is inadequate, then and engine water temperature can constantly raise, when exceeding vigilant temperature be, the stopping power of retarder own can be caused to diminish, and engine power is limited, reduces and is assembled with retarder role.
Summary of the invention
In order to solve hydrodynamic retarder in AMT vehicle when braking, a large amount of heat can be produced, thus cause engine water temperature too high, the stopping power of retarder own is caused to diminish, the problem that engine power is limited, the invention provides a kind of temperature control method of water and control system thereof of safe and reliable AMT vehicle hydrodynamic retarder.
In order to realize foregoing invention object, the invention provides a kind of temperature control method of water of AMT vehicle hydrodynamic retarder, comprising the following steps:
(1) hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform step (5);
(2) BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of each gear ratios, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by CAN, downshift request be sent to TCU;
(3), after TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2;
(4) TCU sends raising speed request when downshift to Engine ECU, makes engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, cooling capacity strengthens, and therefore engine water temperature can decline;
(5) BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, then performs step (1), if hydrodynamic retarder quits work, then performs step (6);
(6) end operation, exits this pattern, and BCU performs other task.
Specifically, the temperature control method of water of AMT vehicle hydrodynamic retarder comprises the following steps:
(1) hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform the device of step (5);
Described current water temperature value T
1dEG C to refer to the temperature of engine work, its temperature is 85-103 DEG C; Described warning temperature value T
2dEG C be 95-103 DEG C.
(2) BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of each gear ratios, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by the device that controls CAN, TCU be sent to the device of downshift request;
Described engine speed value r
1for 500-2600rpm rated speed value R
3for 1900-2300rpm.
Described speed changer is 0.743-16.085 at the differential g of different gear ratios.
(3), after TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2device;
Described speed changer n
1refer to the forward gear of automatic transmission case, 16 gear gearbox gear scopes are at 1≤n
1≤ 16; 10 gear gearbox gear scopes are 1≤n
1≤ 10; Described more low gear n
2refer to n
2<n
1;
(4) TCU sends raising speed request when downshift to Engine ECU, the device controlling engine speed by the rotating speed of engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, and cooling capacity strengthens, therefore the engine water temperature device that can decline;
(6) end operation, exits this pattern, and BCU performs other task.
In order to better realize foregoing invention object, present invention also offers a kind of control system of water temperature of AMT vehicle hydrodynamic retarder, comprising with lower device: comprise with lower device:
(1) hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform the device of step (5);
(2) BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of each gear ratios, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by the device that controls CAN, TCU be sent to the device of downshift request;
(3), after TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2device;
(4) TCU sends raising speed request when downshift to Engine ECU, the device controlling engine speed by the rotating speed of engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, and cooling capacity strengthens, therefore the engine water temperature device that can decline;
(5) BCU continues to monitor the working state of hydrodynamic retarder, if hydrodynamic retarder works on, then performs step (1), if hydrodynamic retarder quits work, then performs the device of step (6);
(6) end operation, exits this pattern, and BCU performs the device of other task.
Specifically, a kind of control system of water temperature of AMT vehicle hydrodynamic retarder, comprise car body controller BCU, engine electronic control unit ECU, automatic transmission electronic control unit TCU, gear box actuator and hydrodynamic retarder, described engine electronic control unit ECU, automatic transmission electronic control unit TCU are all connected with described car body controller BCU with hydrodynamic retarder;
Described car body controller BCU, is connected with described engine electronic control unit ECU, automatic transmission electronic control unit TCU and hydrodynamic retarder respectively by CAN; Working state during for being started by hydrodynamic retarder is sent to CAN, after BCU receives its state, start to inquire about current water temperature value, if water temperature is higher than the warning temperature of setting, BCU receives present engine tachometer value, rated speed value, and incorporating transmission speed ratio is differential, calculate whether downshift, and can the gear number of downshift, if can downshift, then by CAN, downshift request be sent to TCU; If water temperature is lower than warning temperature, BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, then perform the state of hydrodynamic retarder, be sent in CAN, BCU receives its state; If hydrodynamic retarder quits work, then end operation, exits this pattern, and BCU performs other task.
The output port of described automatic transmission electronic control unit TCU and input port are connected to input port and the output port of described car body controller BCU; For the working state of hydrodynamic retarder is sent to CAN, BCU receives its state, and BCU receives present engine tachometer value, rated speed value, and incorporating transmission speed ratio is differential, calculates whether downshift, and can the gear number of downshift; After TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer be switched to low gear; TCU sends raising speed request to Engine ECU simultaneously, and after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined; BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, be then sent in CAN, BCU receives its state, if hydrodynamic retarder quits work, then performs end operation, exits this pattern, and BCU performs other task.
Described gear box actuator input port is connected with the output port of described automatic transmission electronic control unit TCU; After receiving request for TCU, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer be switched to low gear; TCU sends raising speed request to Engine ECU simultaneously, and after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined;
Described engine electronic control unit ECU, send raising speed request for receiving TCU to Engine ECU, after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined;
Described automatic transmission electronic control unit TCU, after receiving BCU to request, controls shifting solenoid valve and boosting cylinder for clutch action, makes speed changer be switched to low gear; TCU sends raising speed request to Engine ECU simultaneously, and after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined;
Described hydrodynamic retarder, hydrodynamic retarder is started working, and its state is sent in CAN.
The method of work of the control system of the water temperature of above-mentioned AMT vehicle hydrodynamic retarder, comprises the following steps:
(1) hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform step (5);
(2) BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of each gear ratios, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by CAN, downshift request be sent to TCU;
(3), after TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2;
(4) TCU sends raising speed request when downshift to Engine ECU, makes engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, cooling capacity strengthens, and therefore engine water temperature can decline;
(5) BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, then performs step (1), if hydrodynamic retarder quits work, then performs step (6);
(6) end operation, exits this pattern, and BCU performs other task.
Specifically, the temperature control method of water of AMT vehicle hydrodynamic retarder comprises the following steps:
(1) hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform step (5);
Described current water temperature value T
1dEG C to refer to the temperature of engine work, its temperature is 85-103 DEG C; Described warning temperature value T
2dEG C be 95-103 DEG C.
(2) BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of each gear ratios, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by CAN, downshift request be sent to TCU; Described engine speed value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of different gear ratios, calculates whether downshift and can the gear number n of downshift; If can downshift, then by CAN, downshift request be sent to TCU;
Described engine speed value r
1for 500-2600rpm rated speed value R
3for 1900-2300rpm.
Described speed changer is 0.743-16.085 at the differential g of different gear ratios.
(3), after TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2; Described speed changer n
1refer to the forward gear of automatic transmission case, 16 gear gearbox gears are for scope is at 1≤n
1≤ 16; 10 gear gearbox gear scopes are 1≤n
1≤ 10; Described more low gear n
2refer to n
2<n
1;
(4) TCU sends raising speed request when downshift to Engine ECU, makes engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, cooling capacity strengthens, and therefore engine water temperature can decline;
(5) BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, then performs step (1), if hydrodynamic retarder quits work, then performs step (6);
(6) end operation, exits this pattern, and BCU performs other task.
The invention has the beneficial effects as follows: the water temperature value sent by the continuous monitoring engine ECU of control unit for vehicle (BCU) in the present invention, when water temperature reaches vigilant temperature, constipation is fated front engine tachometer value, rated engine speed value, speed changer low gear speed ratios etc. calculate the gear number that may fall, if can downshift, send downshift request then to automatic transmission electronic control unit (TCU), shifting solenoid valve and clutch power-assisted cylinder working is controlled by it, automatically downshift action is completed, the rotating speed of downshift rear engine raises, the rotating speed of coupled fan also improves, the heat dissipation potential of refrigerating module becomes large, the heat produced will be taken away in time, thus reduce water temperature.After water temperature reduces, retarder can keep enough braking moments, thus reliable Safety performance when ensure that descending; Ensure that engine operation is in rational operating temperature range, ensure that Fuel Economy simultaneously; During descending when retarder has enough braking moments, use no or little main brake brake, just decrease the loss of friction plate, the water tank when descending to trickle on friction plate can be abandoned simultaneously, can carry cargo more, there is very high secure context and the value of economic aspect.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the embodiment of the present invention 1.
Fig. 2 is the flow chart of the embodiment of the present invention 1 and embodiment 2.
Embodiment
Embodiment 1
See Fig. 1 and Fig. 2, the embodiment of the present invention 1 provides a kind of control system of water temperature of AMT vehicle hydrodynamic retarder, comprise car body controller BCU, engine electronic control unit ECU, automatic transmission electronic control unit TCU, gear box actuator and hydrodynamic retarder, described engine electronic control unit ECU, automatic transmission electronic control unit TCU are all connected with described car body controller BCU with hydrodynamic retarder;
Described car body controller BCU, is connected with described engine electronic control unit ECU, automatic transmission electronic control unit TCU and hydrodynamic retarder respectively by CAN; Working state during for being started by hydrodynamic retarder is sent to CAN, after BCU receives its state, start to inquire about current water temperature value, if water temperature is higher than the warning temperature of setting, BCU receives present engine tachometer value, rated speed value, and incorporating transmission speed ratio is differential, calculate whether downshift, and can the gear number of downshift, if can downshift, then by CAN, downshift request be sent to TCU; If water temperature is lower than warning temperature, BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, then perform the state of hydrodynamic retarder, be sent in CAN, BCU receives its state; If hydrodynamic retarder quits work, then end operation, exits this pattern, and BCU performs other task.
The output port of described automatic transmission electronic control unit TCU and input port are connected to input port and the output port of described car body controller BCU; For the working state of hydrodynamic retarder is sent to CAN, BCU receives its state, and BCU receives present engine tachometer value, rated speed value, and incorporating transmission speed ratio is differential, calculates whether downshift, and can the gear number of downshift; After TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer be switched to low gear; TCU sends raising speed request to Engine ECU simultaneously, and after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined; BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, be then sent in CAN, BCU receives its state, if hydrodynamic retarder quits work, then performs end operation, exits this pattern, and BCU performs other task.
Described gear box actuator input port is connected with the output port of described automatic transmission electronic control unit TCU; After receiving request for TCU, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer be switched to low gear; TCU sends raising speed request to Engine ECU simultaneously, and after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined;
Described engine electronic control unit ECU, send raising speed request for receiving TCU to Engine ECU, after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined;
Described automatic transmission electronic control unit TCU, after receiving BCU to request, controls shifting solenoid valve and boosting cylinder for clutch action, makes speed changer be switched to low gear; TCU sends raising speed request to Engine ECU simultaneously, and after engine speed rises, coupled rotation speed of the fan also rises, and cooling capacity improves, and water temperature is declined;
Described hydrodynamic retarder, hydrodynamic retarder is started working, and its state is sent in CAN.
The method of work of the control system of the water temperature of above-mentioned AMT vehicle hydrodynamic retarder, comprises the following steps:
(1) Engine ECU just collects the temperature t of current cooling liquid by cooling-water temperature sensor after powering on
1(unit be DEG C), and it is sent in CAN by CAN information ET1, the cycle of transmission is 1000ms, and particular content is as following table.
Car body controller (BCU) can read the information of ET1 from CAN line, know current water temperature value.
(2) when hydrodynamic retarder is started working, can send its state in CAN by information ERC1, the cycle of transmission is 100ms.
Work as a
1when=0, illustrate that retarder does not play braking action; If a
1>0, illustrates that retarder is braked just in action.
(3) BCU checks the content of ERC1, when inquiring a
1during >0, namely start to inquire about current water temperature value t
1dEG C, vigilant temperature t
2it is 100 DEG C, if current water temperature t
1>=t
2,then perform step (4), if t
1<t
2, then step (9) is performed;
(4) BCU obtains current engine speed value r from EEC1 information, ETC2 information respectively by CAN
1with AMT speed changer current shift n
1, each concrete message sees the following form, and the transmission cycle is respectively 20ms, 100ms.
(5) BCU recalls the current variator that stored at n
1gear speed ratio g
1, the speed ratio of each gear just can obtain after designing speed changer, and the 10 gear AMT gearboxes be contained on heavy-duty car directly keep off speed ratio and to see the following form lattice:
The rated engine speed being loaded in MC07 on heavy-duty car is that 2300rpm, BCU receive EC1 message from CAN, obtains the rated speed R of motor
3for 2300rpm, concrete message sees the following form, and the transmission cycle is 1000ms.
After gearshift, hypothesis is to n
2after rotating speed be r
2, then:
r
2=r
1*g
2/g
1（1）
By r
2with rated engine speed R
3compare.If r
2<R
3, then represent and can shift gears; If r
2>R
3, then the rotating speed r after gearshift is represented
2exceed the rated speed R of motor
3, can not shift gears.If can shift gears, then perform step (6), otherwise just perform step (9);
(6) in descending process, gearbox dynamic system break, TCU keeps gear constant, and BCU is by CAN, and send TC1 signal and ask the request of AMT downshift, particular content sees the following form, and the cycle of transmission is 10ms.
(7), after TCU receives gearshift request, solenoidoperated cluthes servo-cylinder and the action of shifting solenoid valve, make speed changer automatically switch to target gear g
2.
(8) when engine blower silicon oil clutch engages completely, rotation speed of the fan is directly related with engine speed, and speed ratio is 1.25:1.After engine speed raises, rotation speed of the fan is also increased to 1.25 times, and the cooling rate of engine water temperature strengthens greatly, and water temperature is reduced fast, ensures that retarder has enough stopping powers always.
(9) BCU continues to monitor retarder working state, if retarder works on, then performs step (1), if retarder quits work, then performs step (10);
(10) end operation, exits this pattern, and BCU performs other task.
Embodiment 2
See Fig. 2, embodiments provide the controlling method of the heavy special purpose vehicle transfer case gearshift of a kind of AMT, comprise the following steps:
(1) Engine ECU just collects the temperature t of current cooling liquid by cooling-water temperature sensor after powering on
1(unit be DEG C), and it is sent in CAN by CAN information ET1, the cycle of transmission is 1000ms, and particular content is as following table.
Car body controller (BCU) can read the information of ET1 from CAN line, know current water temperature value.
(2) when hydrodynamic retarder is started working, can send its state in CAN by information ERC1, the cycle of transmission is 100ms.
Work as a
1when=0, illustrate that retarder does not play braking action; If a
1>0, illustrates that retarder is braked just in action.
(3) BCU checks the content of ERC1, when inquiring a
1during >0, namely start to inquire about current water temperature value t
1, vigilant temperature t
2it is 100 DEG C, if current water temperature t
1>=t
2, then step (4) is performed, if t
1<t
2, then step (9) is performed.
(4) BCU obtains current engine speed value r from EEC1 information, ETC2 information respectively by CAN
1heavy-duty car MC11 motor, AMT speed changer current shift n
1, each concrete message sees the following form, and the transmission cycle is respectively 20ms, 100ms.
(5) BCU recalls the current variator that stored at n
1speed ratio g
1, be loaded in 16 on heavy-duty car and keep off AMT transmission overdrive speed ratios for seeing the following form:
Be assemblied in the motor of MC11 on heavy-duty car, BCU receives EC1 message from CAN, obtains the rated speed R of motor
3for 1900rpm, concrete message sees the following form, and the transmission cycle is 1000ms.
| Message name | SPN title | Message content |
| EC1 | Engine Speed At Point 2 | R 3（rpm） |
After gearshift, hypothesis is to n
2after rotating speed be r
2, then:
r
2=r
1*g
2/g
1（1）
By r
2with rated engine speed R
3compare.If r
2<R
3, then represent and can shift gears; If r
2>R
3, then the rotating speed r after gearshift is represented
2exceed the rated speed R of motor
3, can not shift gears.If can shift gears, then perform step (6), otherwise just perform step (9);
(6) in descending process, gearbox dynamic system break, TCU keeps gear constant, unless extraneous factor causes automatic transmission case downshift.BCU is by CAN, and send TC1 signal and ask the request of AMT downshift, particular content sees the following form, and the cycle of transmission is 10ms.
(7), after TCU receives gearshift request, solenoidoperated cluthes servo-cylinder and the action of shifting solenoid valve, make speed changer automatically switch to target gear g
2.
(8) when engine blower silicon oil clutch engages completely, rotation speed of the fan is directly related with engine speed, and speed ratio is 1.25:1.After engine speed raises, rotation speed of the fan is also increased to 1.25 times, and the cooling rate of engine water temperature strengthens greatly, and water temperature is reduced fast, ensures that retarder has enough stopping powers always.
(9) BCU continues to monitor retarder working state, if retarder works on, then performs step (1), if retarder quits work, then performs step (10);
(10) end operation, exits this pattern, and BCU performs other task.
The present invention can pass through without the technical characteristics described or adopt existing techniques in realizing, do not repeat them here, certainly, above-mentioned explanation is not limitation of the present invention, the present invention is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also should belong to the present invention.
Claims (6)
1. a temperature control method of water for AMT vehicle hydrodynamic retarder, is characterized in that, comprises the following steps:
Hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform step (5);
BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, the differential g of each gear ratios of incorporating transmission, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by CAN, downshift request be sent to TCU;
After TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2;
TCU sends raising speed request when downshift to Engine ECU, makes engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, cooling capacity strengthens, and therefore engine water temperature can decline;
BCU continues to monitor hydrodynamic retarder working state, if hydrodynamic retarder works on, then performs step (1), if hydrodynamic retarder quits work, then performs step (6);
End operation, exits this pattern, and BCU performs other task.
2. the temperature control method of water of AMT vehicle hydrodynamic retarder according to claim 1, is characterized in that, in step (1), and described current water temperature value T
1dEG C to refer to the temperature of engine work, its temperature is 85-103 DEG C; Described warning temperature value T
2dEG C be 95-103 DEG C.
3. the temperature control method of water of AMT vehicle hydrodynamic retarder according to claim 1, is characterized in that, in described step (2), and described engine speed value r
1for 500-2600rpm, rated speed value R
3for 1900-2300rpm.
4. the temperature control method of water of AMT vehicle hydrodynamic retarder according to claim 1, is characterized in that, in described step (3), and described speed changer n
1refer to the forward gear of automatic transmission case, 16 gear gearbox gears are for scope is at 1≤n
1≤ 16; 10 gear gearbox gear scopes are 1≤n
1≤ 10; Described more low gear n
2refer to n
2<n
1.
5. the temperature control method of water of AMT vehicle hydrodynamic retarder according to claim 1, is characterized in that, in described step (2), described speed changer is 0.743-16.085 at the differential g of different gear ratios.
6. a water temperature control system for AMT vehicle hydrodynamic retarder as claimed in claim 1, is characterized in that, comprise with lower device:
(1) hydrodynamic retarder is started working, and is sent in CAN by its state, after BCU receives its state, starts to inquire about current water temperature value T
1dEG C, if water temperature value T
1higher than the warning temperature value T of setting
2dEG C, i.e. T
1>T
2time, perform step (2), if water temperature value T
1lower than warning temperature value T
2time, then perform the device of step (5);
(2) BCU receives present engine tachometer value r
1, rated speed value R
3, current gear n
1, incorporating transmission, at the differential g of each gear ratios, calculates whether downshift, and can the gear number n of downshift; If can downshift, then by the device that controls CAN, TCU be sent to the device of downshift request;
(3), after TCU receives request, control shifting solenoid valve and boosting cylinder for clutch action, make speed changer from n
1be switched to more low gear n
2device;
(4) TCU sends raising speed request when downshift to Engine ECU, the device controlling engine speed by the rotating speed of engine speed from r
1rise to r
2, and then engine blower rotating speed also rises thereupon, and cooling capacity strengthens, therefore the engine water temperature device that can decline;
(5) BCU continues to monitor the working state of hydrodynamic retarder, if hydrodynamic retarder works on, then performs step (1), if hydrodynamic retarder quits work, then performs the device of step (6);
(6) end operation, exits this pattern, and BCU performs the device of other task.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510568169.1A CN105114488B (en) | 2015-09-09 | 2015-09-09 | A kind of temperature control method of water and its control system of AMT vehicles Retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510568169.1A CN105114488B (en) | 2015-09-09 | 2015-09-09 | A kind of temperature control method of water and its control system of AMT vehicles Retarder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105114488A true CN105114488A (en) | 2015-12-02 |
| CN105114488B CN105114488B (en) | 2018-01-05 |
Family
ID=54662557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510568169.1A Active CN105114488B (en) | 2015-09-09 | 2015-09-09 | A kind of temperature control method of water and its control system of AMT vehicles Retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105114488B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738579A (en) * | 2017-11-14 | 2018-02-27 | 长安大学 | A kind of heavy goods vehicle lower long slope method of controlling security |
| CN108843785A (en) * | 2018-06-26 | 2018-11-20 | 北京航天发射技术研究所 | A kind of signal detection system and method for hydraulic mechanical transmission box |
| CN112503117A (en) * | 2020-11-28 | 2021-03-16 | 贵州凯星液力传动机械有限公司 | Control method of high-power hydraulic retarder |
| CN115163820A (en) * | 2022-07-04 | 2022-10-11 | 潍柴动力股份有限公司 | Control method and device for target vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266993A (en) * | 2001-03-09 | 2002-09-18 | Jatco Ltd | Hydraulic fluid cooling device for automatic transmission for vehicle |
| CN101070887A (en) * | 2007-05-18 | 2007-11-14 | 深圳市特尔佳科技股份有限公司 | Hydraulic speed buffer control system and control method |
| CN101578209A (en) * | 2007-01-23 | 2009-11-11 | 沃尔沃拉斯特瓦格纳公司 | A method for controlling cooling of an auxiliary brake |
| US20100064991A1 (en) * | 2006-11-30 | 2010-03-18 | Komatsu Ltd. | Control device for cooling fan for vehicle |
| CN101837738A (en) * | 2010-06-13 | 2010-09-22 | 深圳市特尔佳科技股份有限公司 | Hydrodynamic retarder drive controller and control method thereof |
| CN102927167A (en) * | 2012-11-05 | 2013-02-13 | 江苏大学 | Independent type hydraulic retarder based on magnetorheological fluid and control method thereof |
| CN203023364U (en) * | 2013-01-25 | 2013-06-26 | 韦健全 | Independent water-cooling type hydraulic retarder |
-
2015
- 2015-09-09 CN CN201510568169.1A patent/CN105114488B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002266993A (en) * | 2001-03-09 | 2002-09-18 | Jatco Ltd | Hydraulic fluid cooling device for automatic transmission for vehicle |
| US20100064991A1 (en) * | 2006-11-30 | 2010-03-18 | Komatsu Ltd. | Control device for cooling fan for vehicle |
| CN101578209A (en) * | 2007-01-23 | 2009-11-11 | 沃尔沃拉斯特瓦格纳公司 | A method for controlling cooling of an auxiliary brake |
| CN101070887A (en) * | 2007-05-18 | 2007-11-14 | 深圳市特尔佳科技股份有限公司 | Hydraulic speed buffer control system and control method |
| CN101837738A (en) * | 2010-06-13 | 2010-09-22 | 深圳市特尔佳科技股份有限公司 | Hydrodynamic retarder drive controller and control method thereof |
| CN102927167A (en) * | 2012-11-05 | 2013-02-13 | 江苏大学 | Independent type hydraulic retarder based on magnetorheological fluid and control method thereof |
| CN203023364U (en) * | 2013-01-25 | 2013-06-26 | 韦健全 | Independent water-cooling type hydraulic retarder |
Non-Patent Citations (1)
| Title |
|---|
| 孙鹏: "液力缓速器的冷却水路布置", 《客车技术与研究》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107738579A (en) * | 2017-11-14 | 2018-02-27 | 长安大学 | A kind of heavy goods vehicle lower long slope method of controlling security |
| CN108843785A (en) * | 2018-06-26 | 2018-11-20 | 北京航天发射技术研究所 | A kind of signal detection system and method for hydraulic mechanical transmission box |
| CN112503117A (en) * | 2020-11-28 | 2021-03-16 | 贵州凯星液力传动机械有限公司 | Control method of high-power hydraulic retarder |
| CN115163820A (en) * | 2022-07-04 | 2022-10-11 | 潍柴动力股份有限公司 | Control method and device for target vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105114488B (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9470307B2 (en) | Method for operating a vehicle drive train | |
| CN107567554B (en) | Method for disengaging an inactive gear of a dual clutch transmission and corresponding transmission | |
| US7517298B2 (en) | Power-on downshift control for a hybrid electric vehicle powertrain | |
| US9932030B2 (en) | Hybrid drive system | |
| CN105114488A (en) | Water temperature control method of AMT vehicle type hydraulic retarder and control system thereof | |
| US8855877B2 (en) | Controlling gearshifting to prevent powertrain hunting | |
| JP2010517872A (en) | Method for operating a vehicle drive train | |
| US8874299B2 (en) | Vehicle control system for electrically driven vehicle | |
| CN103821919B (en) | The cooling flow controlling method of dual-clutch transmission and system | |
| CN103153737B (en) | Control device for vehicle driving system | |
| US8475334B2 (en) | Load-sensitive automatic transmission system for agricultural electric vehicle | |
| JPH0429572B2 (en) | ||
| JPH11257472A (en) | Gear shift control device for prime mover | |
| KR20180106981A (en) | Deceleration based brake coolant system and method thereof | |
| CN103629344A (en) | Wet type double-clutch automatic gearbox transmission system and transmission control method thereof | |
| RU2536753C2 (en) | Car driving and system to this end | |
| US8821344B2 (en) | Controlling a transmission skip change upshift | |
| EP4139157A1 (en) | Apparatus and method for controlling an electric machine for a vehicle | |
| JP4760757B2 (en) | Vehicle drive device | |
| CN107117071A (en) | New-energy electric vehicle magnetic-powder-type two speed transmission and its process for gear | |
| CN103863314A (en) | Control method for starting engine in pure electric running process of strong hybrid power vehicle | |
| CN109398344B (en) | Clutch torque compensation method for hybrid vehicle | |
| JP2006183687A (en) | Lubrication control system of vehicle | |
| CN102808939A (en) | Method for controlling torque converter of automatic transmission | |
| GB2594278A (en) | Apparatus and method for controlling an electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |