CN102135175A - Electro-hydraulic control system for a dual clutch transmission - Google Patents
Electro-hydraulic control system for a dual clutch transmission Download PDFInfo
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- CN102135175A CN102135175A CN2011100240675A CN201110024067A CN102135175A CN 102135175 A CN102135175 A CN 102135175A CN 2011100240675 A CN2011100240675 A CN 2011100240675A CN 201110024067 A CN201110024067 A CN 201110024067A CN 102135175 A CN102135175 A CN 102135175A
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Abstract
A hydraulic control system for a dual clutch transmission includes a plurality of pressure and flow control devices and logic valve assemblies in fluid communication with a plurality of clutch actuators and with a plurality of synchronizer actuators. The clutch actuators are operable to actuate a plurality of torque transmitting devices and the synchronizer actuators are operable to actuate a plurality of synchronizer assemblies. Selective activation of combinations of the pressure control solenoids and the flow control solenoids allows for a pressurized fluid to activate at least one of the clutch actuators and synchronizer actuators in order to shift the transmission into a desired gear ratio.
Description
The cross reference of related application
The application requires to enjoy the rights and interests of the U.S. Provisional Application No.61/297490 that submitted on January 22nd, 2010, and the full content of this provisional application is incorporated among the application by reference at this.
Technical field
The present invention relates to be used for the control system of double-clutch speed changer, relate more specifically to a kind of electrohydraulic control system, this system has a plurality of solenoids and valve, and described a plurality of solenoids and valve can activate a plurality of actuators in the double-clutch speed changer.
Background technique
Typical many speed dual clutch transmissions use the combination of two friction clutches and several tooth clutch/synchronizers, thereby realize " power connection " (Power-on) or dynamic gear shift by being used alternatingly of two friction clutches, wherein synchronizer actual carry out dynamic shifting before at ratio on the horizon by chosen in advance.The torque-flow that " power connection " gear shift means from motor needn't be interrupted before gear shift.This design is used usually has the counter shaft gear of different dedicated gear pairs or gear train to realize each forward speed ratios.Usually, electric-controlled hydraulic control loop or system are in order to control solenoid and valve assembly.Described solenoid and valve assembly actuating clutch and synchronizer are to realize forward gears and reverse gear ratio.
Although previous hydraulic control system helps realizing its intended purposes, but the demand for the new modified model hydraulic control system structure in the speed changer is constant substantially, and described new modified model hydraulic control system structure has improved performance---particularly all the more so aspect efficient, responsiveness and smoothness.That therefore, need a kind ofly use in double-clutch speed changer can cost-effective modified model hydraulic control system.
Summary of the invention
A kind of hydraulic control system that is used for double-clutch speed changer comprises a plurality of pressure and flow control device and the logical valve that is communicated with a plurality of clutch actuators and a plurality of synchronizer actuator fluid.Described clutch actuator can activate a plurality of torque transmitters, and described synchronizer actuator can activate a plurality of synchronizer assemblies.Thereby the selective actuation of the combination of electromagnetic pressure control valve and flow control solenoid valve make that pressure fluid can start in described clutch actuator and the described synchronizer actuator at least one described speed changer is switched to required velocity ratio.
In an example of described hydraulic control system, described hydraulic control system comprises motor-drive pump and the accumulator that pressurized hydraulic fluid is provided.
In another example of described hydraulic control system, described hydraulic control system comprises a pressure control device and two flow control devices that can activate described double clutch.
In another example of described hydraulic control system, described hydraulic control system comprises two pressure control devices that can activate a plurality of synchronizer assemblies, two flow control devices and two logical valves.
1. 1 kinds of hydraulic control systems that are used to control double-clutch speed changer of scheme with a plurality of synchronizers, described hydraulic control system comprises:
The source of pressurized hydraulic fluid is provided;
First, second and the 3rd electromagnetic pressure control valve, described first, second is communicated with described source fluid in the downstream with the 3rd electromagnetic pressure control valve;
The first flow control electromagnetic valve, described first flow control electromagnetic valve is communicated with the described first electromagnetic pressure control valve fluid in the downstream;
The second flow control solenoid valve, the described second flow control solenoid valve is communicated with the described first electromagnetic pressure control valve fluid in the downstream;
The first clutch actuator, described first clutch actuator is communicated with to be used for optionally activating the first clutch of described double-clutch speed changer with described first flow control electromagnetic valve fluid in the downstream;
The second clutch actuator, described second clutch actuator is communicated with to be used for optionally activating the second clutch of described double-clutch speed changer with the described second flow control solenoid valve fluid in the downstream;
The 3rd flow control solenoid valve, described the 3rd flow control solenoid valve is communicated with the described second electromagnetic pressure control valve fluid in the downstream;
The 4th flow control solenoid valve, described the 4th flow control solenoid valve is communicated with described the 3rd electromagnetic pressure control valve fluid in the downstream;
First logic valve assembly, described first logic valve assembly is communicated with described the 3rd flow control solenoid valve and the described second electromagnetic pressure control valve fluid in the downstream, wherein, the described first logic control valve assembly has the guiding valve that can move between first and second positions;
Second logic valve assembly, described second logic valve assembly is communicated with described the 4th flow control solenoid valve and described the 3rd electromagnetic pressure control valve fluid in the downstream, wherein, the described second logic control valve assembly has the guiding valve that can move between first and second positions;
First actuator, described first actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in primary importance, described first actuator can move between first, second and the 3rd position optionally to engage or to disconnect in described a plurality of synchronizer first;
Second actuator, described second actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in the second place, described second actuator can move between first, second and the 3rd position optionally to engage or to disconnect in described a plurality of synchronizer second;
The 3rd actuator, described the 3rd actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in primary importance, described the 3rd actuator can move between first, second and the 3rd position optionally to engage or to disconnect in described a plurality of synchronizer the 3rd; And
The 4th actuator, described the 4th actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in the second place, described the 4th actuator can move between first, second and the 3rd position optionally engaging or to disconnect in described a plurality of synchronizer the 4th, and
Wherein, thereby described second electromagnetic pressure control valve generates first hydraulic fluid pressure and described the 3rd flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described first and second actuators in described first and second actuators at least one moved to first, in the second and the 3rd position at least one, and wherein, thus described the 3rd electromagnetic pressure control valve generates second hydraulic fluid pressure and described the 4th flow control solenoid valve to be changed at least one the flow of hydraulic fluid that flow in described third and fourth actuator in described third and fourth actuator at least one is moved to first, in the second and the 3rd position at least one.
Scheme 2. is as scheme 1 described hydraulic control system, further comprise the logical valve control electromagnetic valve, described logical valve control electromagnetic valve is communicated with the described first electromagnetic pressure control valve fluid in the downstream, and is communicated with the described first and second logic valve assembly fluids in the upstream.
Scheme 3. is as scheme 1 described hydraulic control system, wherein, described logical valve control electromagnetic valve is configured to the 3rd pressurized hydraulic fluid from described first electromagnetic pressure control valve is transferred to described first and second logic valve assemblies, thereby in the guiding valve of described first and second logic valve assemblies each is moved to the second place.
Scheme is used for controlling the hydraulic control system of a plurality of synchronizers of double-clutch speed changer and speed changer for 4. 1 kinds, and described hydraulic control system comprises:
The source of pressurized hydraulic fluid is provided;
First, second and the 3rd electromagnetic pressure control valve, each all has described first, second and the 3rd electromagnetic pressure control valve outlet and has the inlet that is communicated with described source fluid in the downstream;
First flow control electromagnetic valve, described first flow control electromagnetic valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The second flow control solenoid valve, the described second flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The first clutch actuator, described first clutch actuator is communicated with the described outlet fluid of described first flow control electromagnetic valve in the downstream, and described first clutch actuator configurations becomes optionally to activate the first clutch of described double-clutch speed changer;
The second clutch actuator, described second clutch actuator is communicated with the described outlet fluid of the described second flow control solenoid valve in the downstream, and described second clutch actuator configurations becomes optionally to activate the second clutch of described double-clutch speed changer;
The 3rd flow control solenoid valve, described the 3rd flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described second electromagnetic pressure control valve in the downstream;
The 4th flow control solenoid valve, described the 4th flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream;
First logic valve assembly, described first logic valve assembly is communicated with the described outlet of described the 3rd flow control solenoid valve and the described outlet fluid of described second electromagnetic pressure control valve in the downstream, wherein, the described first logic control valve assembly has the guiding valve that can move between first and second positions;
Second logic valve assembly, described second logic valve assembly is communicated with the described outlet of described the 4th flow control solenoid valve and the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream, wherein, the described second logic control valve assembly has the guiding valve that can move between first and second positions;
First actuator, described first actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in primary importance, described first actuator can move between first, second and the 3rd position;
Second actuator, described second actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in the second place, described second actuator can move between first, second and the 3rd position;
The 3rd actuator, described the 3rd actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in primary importance, described the 3rd actuator can move between first, second and the 3rd position; And
The 4th actuator, described the 4th actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, and when the described guiding valve of the described second logic control valve assembly during in the second place, described the 4th actuator can move between first, second and the 3rd position
Wherein, thereby described second electromagnetic pressure control valve generates first hydraulic fluid pressure and described the 3rd flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described first and second actuators in described first and second actuators at least one moved to first, in the second and the 3rd position at least one, thereby and wherein said the 3rd electromagnetic pressure control valve generates second hydraulic fluid pressure and described the 4th flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described third and fourth actuator in described third and fourth actuator at least one moved to first, in the second and the 3rd position at least one
Wherein, in the described first, second, third and the 4th actuator each all is configured to synchronizer is positioned between at least one engagement positio and the neutral position, and wherein, first and second positions of each in the described first, second, third and the 4th actuator are all corresponding to one in the neutral position of described synchronizer and the engagement positio.
Scheme 7. is as scheme 4 described hydraulic control systems, wherein, described guiding valve by moving described first and second logic valve assemblies and change described first and second flow of hydraulic fluid and act on the power that is generated in the described first, second, third and the 4th actuator each to overcome or not overcome by in described first and second pressurized hydraulic fluids each, the described first, second, third and the 4th actuator is moved between first and second positions separately.
Scheme 8. is as scheme 4 described hydraulic control systems, and wherein, described source comprises pump and accumulator.
Scheme is used for controlling the hydraulic control system of a plurality of synchronizers of double-clutch speed changer and speed changer for 9. 1 kinds, and described hydraulic control system comprises:
The source of pressurized hydraulic fluid is provided;
First, second and the 3rd electromagnetic pressure control valve, each all has described first, second and the 3rd electromagnetic pressure control valve outlet and has the inlet that is communicated with described source fluid in the downstream;
First flow control electromagnetic valve, described first flow control electromagnetic valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The second flow control solenoid valve, the described second flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The first clutch actuator, described first clutch actuator is communicated with the described outlet fluid of described first flow control electromagnetic valve in the downstream, and described first clutch actuator configurations becomes optionally to activate the first clutch of described double-clutch speed changer;
The second clutch actuator, described second clutch actuator is communicated with the described outlet fluid of the described second flow control solenoid valve in the downstream, and described second clutch actuator configurations becomes optionally to activate the second clutch of described double-clutch speed changer;
The 3rd flow control solenoid valve, described the 3rd flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described second electromagnetic pressure control valve in the downstream;
The 4th flow control solenoid valve, described the 4th flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream;
First logic valve assembly, described first logic valve assembly is communicated with the described outlet of described the 3rd flow control solenoid valve and the described outlet fluid of described second electromagnetic pressure control valve in the downstream, wherein, the described first logic control valve assembly has the guiding valve that can move between first and second positions;
Second logic valve assembly, described second logic valve assembly is communicated with the described outlet of described the 4th flow control solenoid valve and the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream, wherein, the described second logic control valve assembly has the guiding valve that can move between first and second positions;
Logical valve control electromagnetic valve, described logical valve control electromagnetic valve have inlet that is communicated with the described first electromagnetic pressure control valve fluid in the downstream and the outlet that is communicated with the described first and second logic valve assembly fluids in the upstream;
First actuator, described first actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in primary importance, described first actuator can move between first, second and the 3rd position;
Second actuator, described second actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in the second place, described second actuator can move between first, second and the 3rd position;
The 3rd actuator, described the 3rd actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in primary importance, described the 3rd actuator can move between first, second and the 3rd position; And
The 4th actuator, described the 4th actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, and when the described guiding valve of the described second logic control valve assembly during in the second place, described the 4th actuator can move between first, second and the 3rd position
Wherein, thereby described second electromagnetic pressure control valve generates first hydraulic fluid pressure and described the 3rd flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described first and second actuators in described first and second actuators at least one moved to first, in the second and the 3rd position at least one, thereby and wherein said the 3rd electromagnetic pressure control valve generates second hydraulic fluid pressure and described the 4th flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described third and fourth actuator in described third and fourth actuator at least one moved to first, in the second and the 3rd position at least one
Wherein, described logical valve control electromagnetic valve is configured to the 3rd pressurized hydraulic fluid from described first electromagnetic pressure control valve is transferred to described first and second logic valve assemblies, thereby in the guiding valve of described first and second logic valve assemblies each is all moved to the second place, and
Wherein, in the described first, second, third and the 4th actuator each all is configured to synchronizer is positioned between at least one engagement positio and the neutral position, and wherein, first and second positions of each in the described first, second, third and the 4th actuator are all corresponding to one in the neutral position of described synchronizer and the engagement positio.
Scheme 11. is as scheme 10 described hydraulic control systems, and wherein, described source comprises pump and accumulator.
The more feature of the present invention, aspect and advantage will clearly manifest by reference following description and accompanying drawing, identical identical parts, element or the feature of reference character representative in the accompanying drawing.
Description of drawings
Accompanying drawing described herein only is used for purpose of illustration, and does not mean that by any way and limit the scope of the invention.
Fig. 1 has the schematic representation of the exemplary double-clutch speed changer of hydraulic control system in accordance with the principles of the present invention.
Fig. 2 A-C is the schematic representation of a mode of execution that is used for the hydraulic control system of double-clutch speed changer in accordance with the principles of the present invention.
Embodiment
With reference to figure 1, adopt exemplary double-clutch automatic gearbox of the present invention to be illustrated and indicate with reference character 10 generally.Double-clutch speed changer 10 comprises the metal shell 12 that common casting forms, the various parts of housing 12 sealings and protection speed changer 10.Housing 12 comprises the location and supports a plurality of holes, passage, the shaft shoulder and the flange of these parts.Although housing 12 is shown as typical rear wheel drive speed changer, should be understood that speed changer 10 can be a front wheel drive transmission, also can be the rear wheel drive speed changer, this does not deviate from scope of the present invention.Speed changer 10 comprises input shaft 14, output shaft 16, double clutch assembly 18 and gear apparatus 20.Input shaft 14 is connected with prime mover (not shown), such as gasoline engine or diesel engine or mixed power plant.Input torque or power that input shaft 14 receives from prime mover.Output shaft 16 preferably is connected with main reducing gear unit (not shown), and the main reducing gear unit can comprise for example back shaft (propshafts), differential assembly and live axle.Input shaft 14 is attached to double clutch assembly 18 and drives double clutch assembly 18.Double clutch assembly 18 preferably include a pair of can the selectivity engageable torque transmitting devices---comprise first torque transmitter 22 and second torque transmitter 24.Torque transmitter 22,24 is dry clutch preferably.Thereby torque transmitter 22,24 is engaged by mutual exclusion ground driving torque is provided to gear apparatus 20.
This speed changer also comprises transmission control module 32.Transmission control module 32 is electric control device preferably, and it has digital computer or processor, the control logic of pre-programmed, the storage that is used for storage data and at least one I/O (I/O) peripheral unit.Control logic comprises a plurality of logic programs that are used to monitor, handle and generate data.Transmission control module 32 is controlled the actuating of double clutch assembly 18 and synchronizer assembly 30A-D by hydraulic control system 100 in accordance with the principles of the present invention.
Go to Fig. 2 A-C, thereby hydraulic control system 100 can optionally engage double clutch assembly 18 and synchronizer assembly 30A-D by will optionally transferring to a plurality of gear shift actuators from the hydraulic fluid 102 of liquid tank 104, and this shall be described in more detail below.Liquid tank 104 is groove or the ponds that preferably are arranged on the bottom of case of transmission 12, and the hydraulic fluid of collecting from the various parts and the zone of automatic transmission 10 102 can be back to liquid tank 104.Via pump 106, hydraulic fluid 102 is extracted or aspirates from liquid tank 104.Preferably, pump 106 is by the prime mover driven of motor or internal-combustion engine (not shown) or other any kinds.Pump 106 can be for example gear pump, vane pump, internal gear bearing pump or other any displacement pumps.Pump 106 comprises inlet 108 and outlet 110.Inlet 108 is communicated with liquid tank 104 via suction line 112.Outlet 110 transfers to supply pipeline 114 with the hydraulic fluid 102 of pressurization.The safety check 120 of the discharge safety valve 116 of supply pipeline 114 and spring biasing, filter 118 and spring biasing on the pressure side is communicated with.The discharge safety valve 116 of spring biasing is communicated with liquid tank 104.The discharge safety valve 116 of spring biasing is arranged under the higher relatively predetermined pressure, if the pressure of the hydraulic fluid 102 in the supply pipeline 114 surpasses this predetermined pressure, then safety valve 116 immediate unlocks are to discharge and to reduce the pressure of hydraulic fluid 102.On the pressure side filter 118 be arranged in parallel with the safety check 120 of spring biasing.If on the pressure side filter 118 becomes and blocks or partial blockage, then the pressure in the supply pipeline 114 increases and the safety check 120 of spring biasing is opened so that hydraulic fluid 102 can be walked around filter 118 on the pressure side.
Each all is communicated with the safety check 120 of filter 118 and spring biasing on the pressure side with output pipe 122.Output pipe 122 is communicated with second safety check 124.Second safety check 124 is communicated with main supply pipeline 126, and is configured to keep the hydraulic coupling in the main supply pipeline 126.Main supply pipeline 126 provides the hydraulic fluid of pressurization to accumulator 130 and primary pressure sensor 132.Accumulator 130 is energy accumulating devices, and incompressible hydraulic fluid 102 is remained under the certain pressure by external source in accumulator 130.In example provided by the invention, accumulator 130 is to have spring or compressible gas the hydraulic fluids 102 in the accumulator 130 are applied the spring type or the gas type accumulator of compressive force.Yet, should be understood that accumulator 130 can be the accumulator of other types, such as gas boosting type (gas-charged type) accumulator, this does not deviate from scope of the present invention.Thereby accumulator 130 can return to main supply pipeline 126 with the hydraulic fluid 102 of pressurization.Yet when accumulator 130 dischargings, second safety check 124 stops the hydraulic fluid 102 of pressurization to flow back into pump 106.When accumulator 130 was filled, accumulator 130 can replace pump 106 to become the source of the hydraulic fluid 102 of pressurization effectively, thereby had eliminated the needs of continuous running pump 106.Primary pressure sensor 132 reads the pressure of the hydraulic fluid 102 in the main supply pipeline 126 in real time and the data that read is offered transmission control module 32.Thereby transmission control module 32 can be according to the real-time status operating pumps 106 of accumulator 130.
The preferably automatically controlled variable force solenoid valve of clutch pressure control device 136, it has inner closed loop pressure control.The solenoid valve of various making, type and model may be used to the present invention, as long as clutch pressure control device 136 can be controlled the pressure of hydraulic fluid 102.Clutch pressure control device 136 comprises the inlet 136A that is communicated with outlet 136B when clutch pressure control device 136 is activated or switches on, and comprises the exhaust port 136C that is communicated with outlet 136B when clutch pressure control device 136 is not activated or does not switch on.Clutch pressure control device 136 variable is enabled in hydraulic fluid 102 can regulate or control hydraulic fluid 102 when inlet 136A flowed to outlet 136B pressure.Inner closed loop pressure control provides the pressure feedback in the solenoid valve so that adjust the flow that flows to outlet 136B based on the specific currents instruction that comes self-controller 32, thus pilot pressure.Inlet 136A is communicated with main supply pipeline 126.Outlet 136B is communicated with intermediate duct 142.Exhaust port 136C is communicated with liquid tank 104 or discharge backfill loop (not shown).
Middle hydraulic pipe line 142 is sent to first clutch flow control device 144, the first pressure limit control valve 146, second clutch flow control device 160, the second pressure limit control valve 162 and mode valve control electromagnetic valve 174 with hydraulic fluid 102 from clutch pressure control device 136.The preferably automatically controlled variable force solenoid valve of first clutch flow control device 144, it can be controlled from the flow of the hydraulic fluid 102 of first clutch flow control device 144 so that activate first torque transmitter 22, and this shall be described in more detail below.First clutch flow control device 144 comprise when first clutch flow control device 144 be energized and when reaching electric current greater than zero current (promptly be in zero when moving ahead/falling back flow point specific currents) with export the inlet 144A that 144B is communicated with, and when comprising the electric current of reducing to when first clutch flow control device 144 no electric circuits less than zero current with export the exhaust port 144C that 144B is communicated with.First clutch flow control device 144 variable is enabled in hydraulic fluid 102 can regulate or control hydraulic fluid 102 when inlet 144A flowed to outlet 144B flow.Inlet 144A is communicated with intermediate duct 142.Outlet 144B is communicated with first clutch supply pipeline 148 and throttle orifice 150.Exhaust port 144C is communicated with liquid tank 104 or discharge backfill loop (not shown).The first pressure limit control valve 146 be arranged in parallel with first clutch flow control solenoid valve 144 and is communicated with first clutch supply pipeline 148.If the pressure in the first clutch supply pipeline 148 surpasses predetermined value, then the first pressure limit control valve 146 is opened to discharge and reduction pressure.
First clutch supply pipeline 148 is communicated with inlet/outlet 152A fluid in the first clutch piston assembly 152.First clutch piston assembly 152 comprises the single action piston 154 that is slidably disposed in the cylinder body 156.Piston 154 under hydraulic pressure translation to engage first torque transmitter 22 shown in Figure 1.When first clutch flow control device 144 is activated or switches on and during greater than zero current, the flow of hydraulic fluid 102 of pressurization is provided to first clutch supply pipeline 148.The flow of hydraulic fluid 102 of pressurization is sent to first clutch piston assembly 152 from first clutch supply pipeline 148, in first clutch piston assembly 152, engages first torque transmitter 22 thereby the hydraulic fluid of pressurization 102 promotes piston 154.When being lower than zero current when first clutch flow control solenoid valve 144 no electric circuits, inlet 144A closes and flow to exhaust port 144C and then flow into liquid tank 104 or discharge backfill loop (not shown) from outlet 144B from the hydraulic fluid of cylinder body 156, thereby disconnects first torque transmitter 22.The translational movement of piston 154 is by position transducer 157 monitorings.
The preferably automatically controlled variable force solenoid valve of second clutch flow control device 160, it can be controlled from the flow of the hydraulic fluid 102 of second clutch flow control device 160 so that activate second torque transmitter 24, and this shall be described in more detail below.Second clutch flow control device 160 comprises when second clutch flow control device 160 and being energized and the inlet 160A that is communicated with outlet 160B when reaching electric current greater than zero current, and when comprising the electric current of reducing to when second clutch flow control device 160 no electric circuits less than zero current with export the exhaust port 160C that 160B is communicated with.Second clutch flow control device 160 variable is enabled in hydraulic fluid 102 can regulate or control hydraulic fluid 102 when inlet 160A flowed to outlet 160B flow.Inlet 160A is communicated with intermediate duct 142.Outlet 160B is communicated with second clutch supply pipeline 164 and throttle orifice 166.Exhaust port 160C is communicated with liquid tank 104 or discharge backfill loop (not shown).The second pressure limit control valve 162 be arranged in parallel with second clutch flow control solenoid valve 160 and is communicated with second clutch supply pipeline 164.If the pressure in the second clutch supply pipeline 164 surpasses predetermined value, then the second pressure limit control valve 162 is opened to discharge and reduction pressure.The translational movement of piston 170 is by position transducer 167 monitorings.
Second clutch supply pipeline 164 is communicated with inlet/outlet 168A fluid in the second clutch piston assembly 168.Second clutch piston assembly 168 comprises the single action piston 170 that is slidably disposed in the cylinder body 172.Piston 170 under hydraulic pressure translation to engage second torque transmitter 24 shown in Figure 1.When second clutch flow control device 160 is activated or switches on when reaching electric current greater than zero point, the flow of hydraulic fluid 102 of pressurization is provided to second clutch supply pipeline 166.The flow of hydraulic fluid 102 of pressurization is sent to second clutch piston assembly 168 from second clutch supply pipeline 166, in second clutch piston assembly 168, engages second torque transmitter 24 thereby the hydraulic fluid of pressurization 102 promotes piston 170.When reducing to the electric current less than zero point when second clutch flow control solenoid valve 160 no electric circuits, inlet 160A closes and flow to exhaust port 160C and then flow into liquid tank 104 from outlet 160B from the hydraulic fluid of cylinder body 172, thereby disconnects second torque transmitter 24.
The first and second actuator pressure control gear 140 and 141 can optionally provide the flow of hydraulic fluid 102 of pressurization to flow through the first and second actuator flow control devices 178,180 and first and second valve assemblys 182,184 so that optionally activate a plurality of synchronizer shift actuators.The synchronizer actuator comprises the first synchronizer actuator 186A, the second synchronizer actuator 186B, the 3rd synchronizer actuator 186C and the 4th synchronizer actuator 186D.
For example, the preferably automatically controlled variable force solenoid valve of the first actuator pressure control gear 140, it has inner closed loop pressure control.The solenoid valve of various making, type and model may be used to the present invention, as long as the first actuator pressure control gear 140 can be controlled the pressure of hydraulic fluid 102.The first actuator pressure control gear 140 comprises the inlet 140A that is communicated with outlet 140B when the first actuator pressure control gear 140 is activated or switches on, and comprises the exhaust port 140C that is communicated with outlet 140B when the first actuator pressure control gear 140 is not activated or does not switch on.The first actuator pressure control gear 140 variable is enabled in hydraulic fluid 102 can regulate or control hydraulic fluid 102 when inlet 140A flowed to outlet 140B pressure.Inner closed loop pressure control provides the pressure feedback in the solenoid valve so that adjust the flow that flows to outlet 140B based on the specific currents instruction that comes self-controller 32, thus pilot pressure.Inlet 140A is communicated with main supply pipeline 126.Outlet 140B is communicated with intermediate duct 188.Exhaust port 140C is communicated with liquid tank 104 or discharge backfill loop (not shown).
First valve assembly 182 can be with the hydraulic fluid 102 guiding first synchronizer actuator 186A and the second synchronizer actuator 186B of the pressurization of flowing out from first pressure control device 140 and the first actuator flow control device 178, and this shall be described in more detail below.First valve assembly 182 comprises the first inlet 182A, the second inlet 182B, the first outlet 182C, the second outlet 182D, the 3rd outlet 182E, the 4th outlet 182F, a plurality of exhaust port 182G and a control mouthful 182H.The first inlet 182A is communicated with intermediate duct 190.The second inlet 182B is communicated with intermediate duct 188.The first outlet 182C is communicated with synchronizer supply pipeline 192.The second outlet 182D is communicated with synchronizer supply pipeline 194.The 3rd outlet 182E is communicated with synchronizer supply pipeline 196.The 4th outlet 182F is communicated with synchronizer supply pipeline 198.Exhaust port 182G is communicated with liquid tank 104 or discharge backfill loop (not shown).A control mouthful 182H is communicated with pilot line 200, and pilot line 200 is communicated with control gear 174.Control valve device 174 is the on-off solenoid valve preferably, and it is normally closed.Yet, should be understood that the solenoid valve of other types and other control systems also can use, this does not deviate from scope of the present invention, such as electromagnetic pressure control valve.
When guiding valve 202 when removing stroke position, the first inlet 182A is communicated with the second outlet 182D, the second inlet 182B and the 4th exports 182F and is communicated with, and the first and the 3rd export 182C, 182E and be communicated with exhaust port 182G.When guiding valve 202 during at the stroke position as shown in Fig. 2 B, the first inlet 182A is communicated with the first outlet 182C, and the second inlet 182B and the 3rd exports 182E and is communicated with, and the second and the 4th export 182D, 182F and be communicated with exhaust port 182G.Therefore, when control valve device 174 is opened, flow to the second synchronizer actuator 186B from the hydraulic fluid 102 of the pressurization of first pressure control device 140 with from the hydraulic fluid 102 of the changeable flow of first flow control gear 178.When control valve device 174 is closed, flow to the first synchronizer actuator 186A from the hydraulic fluid 102 of the pressurization of first pressure control device 140 with from the hydraulic fluid 102 of the changeable flow of first flow control gear 178.
The preferably automatically controlled variable force solenoid valve of the second actuator pressure control gear 141, it has inner closed loop pressure control.The solenoid valve of various making, type and model may be used to the present invention, as long as the second actuator pressure control gear 141 can be controlled the pressure of hydraulic fluid 102.The second actuator pressure control gear 141 comprises the inlet 141A that is communicated with outlet 141B when the second actuator pressure control gear 141 is activated or switches on, and comprises the exhaust port 141C that is communicated with outlet 141B when the second actuator pressure control gear 141 is not activated or does not switch on.The second actuator pressure control gear 141 variable is enabled in hydraulic fluid 102 can regulate or control hydraulic fluid 102 when inlet 141A flowed to outlet 141B pressure.Inner closed loop pressure control provides the pressure feedback in the solenoid valve so that adjust the flow that flows to outlet 141B based on the specific currents instruction that comes self-controller 32, thus pilot pressure.Inlet 141A is communicated with main supply pipeline 126.Outlet 141B is communicated with intermediate duct 210.Exhaust port 141C is communicated with liquid tank 104 or discharge backfill loop (not shown).
When valve 222 when removing stroke position, the first inlet 184A is communicated with the second outlet 184D, the second inlet 184B and the 4th exports 184F and is communicated with, and the first and the 3rd export 184C, 184E and be communicated with exhaust port 184G.When valve 222 during at the stroke position as shown in Fig. 2 C, the first inlet 184A is communicated with the first outlet 184C, and the second inlet 184B and the 3rd exports 184E and is communicated with, and the second and the 4th export 184D, 184F and be communicated with exhaust port 184G.Therefore, when control valve device 174 is opened, flow to the 4th synchronizer actuator 186D from the hydraulic fluid 102 of the pressurization of second pressure control device 141 with from the hydraulic fluid 102 of the changeable flow of second flow control device 180.When control valve device 174 is closed, flow to the 3rd synchronizer actuator 186C from the hydraulic fluid 102 of the pressurization of second pressure control device 141 with from the hydraulic fluid 102 of the changeable flow of second flow control device 180.
Preferably each can both engage or activate the dual-area piston for torque-transmitting mechanism assembly of the shift rail in the synchronizer assembly to synchronizer actuator 186A-D, but also can be three regional piston assemblys and do not deviate from scope of the present invention.For example, the first synchronizer actuator 186A can activate the first synchronizer assembly 30A, the second synchronizer actuator 186B can activate the second synchronizer assembly 30B, the 3rd synchronizer actuator 186C can activate the 3rd synchronizer assembly 30C, and the 4th synchronizer actuator 186D can activate the 4th synchronizer assembly 30D.
The first synchronizer actuator 186A comprises the piston 230A that is slidably disposed in piston shell or the cylinder body 232A.Click spring 231A is biased to first engagement positio, second engagement positio and neutral position with piston 230A.Piston 230A provide two independently face for the pressurization hydraulic fluid be applied to it.Piston 230A engages or contacts finger lever, shift fork or other shift rail parts 233A of the first synchronizer assembly 30A.The first synchronizer actuator 186A comprises fluid flow port 234A that is communicated with the first end 235A of piston 230A and the fluid flow port 236A that is communicated with the second opposed end 237A of piston 230A, and the surface of contact of opposite second end 237A is less than first end 235A.Fluid flow port 234A is communicated with synchronizer supply pipeline 194, and fluid flow port 236A is communicated with synchronizer supply pipeline 198.Thereby, the hydraulic fluid 102 of the pressurization that is transmitted by the first actuator pressure control gear 140 enters the second end 237A of the first synchronizer actuator 186A and contact piston 230A via fluid flow port 236A, and enters the first end 235A of the first synchronizer actuator 186A and contact piston 230A via fluid flow port 234A from the flow of hydraulic fluid 102 of first flow control gear 178.The official post piston 230A that is transferred to the hydraulic fluid 102 of fluid flow port 236A and transferred to the active force between the hydraulic fluid 102 of fluid flow port 234A by first flow control gear 178 by the first actuator pressure control gear 140 moves between each position.By the flow of hydraulic fluid 102 of control from first flow control gear 178, piston 234A is activated between each position.A position of the shift rail of the corresponding successively first synchronizer assembly 30A in each position (i.e. left side joint, the right joint and neutral gear).The present invention can comprise vent put sensor 240A with the location transmission of shift fork 233A to controller 32.
The second synchronizer actuator 186B comprises the piston 230B that is slidably disposed in piston shell or the cylinder body 232B.Click spring 231B is biased to first engagement positio, second engagement positio and neutral position with piston 230B.Piston 230B provide two independently face for the pressurization hydraulic fluid be applied to it.Piston 230B engages or contacts finger lever, shift fork or other shift rail parts 233B of the second synchronizer assembly 30B.The second synchronizer actuator 186B comprises fluid flow port 234B that is communicated with the first end 235B of piston 230B and the fluid flow port 236B that is communicated with the second opposed end 237B of piston 230B, and the surface of contact of opposite second end 237B is less than first end 235B.Fluid flow port 234B is communicated with synchronizer supply pipeline 192, and fluid flow port 236B is communicated with synchronizer supply pipeline 196.Thereby, the hydraulic fluid 102 of the pressurization that is transmitted by the first actuator pressure control gear 140 enters the second end 237B of the second synchronizer actuator 186B and contact piston 230B via fluid flow port 236B, and enters the first end 235B of the second synchronizer actuator 186B and contact piston 230B via fluid flow port 234B from the flow of hydraulic fluid 102 of first flow control gear 178.The official post piston 230B that is transferred to the hydraulic fluid 102 of fluid flow port 236B and transferred to the active force between the hydraulic fluid 102 of fluid flow port 234B by first flow control gear 178 by the first actuator pressure control gear 140 moves between each position.By the flow of hydraulic fluid 102 of control from first flow control gear 178, piston 234B is activated between each position.A position of the shift rail of the corresponding successively second synchronizer assembly 30B in each position (i.e. left side joint, the right joint and neutral gear).The present invention can comprise vent put sensor 240B with the location transmission of shift fork 233B to controller 32.
The 3rd synchronizer actuator 186C comprises the piston 230C that is slidably disposed in piston shell or the cylinder body 232C.Click spring 231C is biased to first engagement positio, second engagement positio and neutral position with piston 230C.Piston 230C provide two independently face for the pressurization hydraulic fluid be applied to it.Piston 230C engages or contacts finger lever, shift fork or other shift rail parts 233C of the 3rd synchronizer assembly 30C.The 3rd synchronizer actuator 186C comprises fluid flow port 234C that is communicated with the first end 235C of piston 230C and the fluid flow port 236C that is communicated with the second opposed end 237C of piston 230C, and the surface of contact of opposite second end 237C is less than first end 235C.Fluid flow port 234C is communicated with synchronizer supply pipeline 216, and fluid flow port 236C is communicated with synchronizer supply pipeline 220.Thereby, the hydraulic fluid 102 of the pressurization that is transmitted by the second actuator pressure control gear 141 enters the second end 237C of the 3rd synchronizer actuator 186C and contact piston 230C via fluid flow port 236C, and enters the first end 235C of the 3rd synchronizer actuator 186C and contact piston 230C via fluid flow port 234C from the flow of hydraulic fluid 102 of second flow control device 180.The official post piston 230C that is transferred to the hydraulic fluid 102 of fluid flow port 236C and transferred to the active force between the hydraulic fluid 102 of fluid flow port 234C by second flow control device 180 by the second actuator pressure control gear 141 moves between each position.By the flow of hydraulic fluid 102 of control from second flow control device 180, piston 234C is activated between each position.Each position is a position of the shift rail of corresponding the 3rd synchronizer assembly 30C (i.e. left side joint, the right joint and neutral gear) successively.The present invention can comprise vent put sensor 240C with the location transmission of shift fork 233C to controller 32.
The 4th synchronizer actuator 186D comprises the piston 230D that is slidably disposed in piston shell or the cylinder body 232D.Click spring 231D is biased to first engagement positio, second engagement positio and neutral position with piston 230D.Piston 230D provide two independently face for the pressurization hydraulic fluid be applied to it.Piston 230D engages or contacts finger lever, shift fork or other shift rail parts 233D of the 4th synchronizer assembly 30D.The 4th synchronizer actuator 186D comprises fluid flow port 234D that is communicated with the first end 235D of piston 230D and the fluid flow port 236D that is communicated with the second opposed end 237D of piston 230D, and the surface of contact of opposite second end 237D is less than first end 235D.Fluid flow port 234D is communicated with synchronizer supply pipeline 214, and fluid flow port 236D is communicated with synchronizer supply pipeline 218.Thereby, the hydraulic fluid 102 of the pressurization that is transmitted by the second actuator pressure control gear 141 enters the second end 237D of the 4th synchronizer actuator 186D and contact piston 230D via fluid flow port 236D, and enters the first end 235D of the 4th synchronizer actuator 186D and contact piston 230D via fluid flow port 234D from the flow of hydraulic fluid 102 of second flow control device 180.The official post piston 230D that is transferred to the hydraulic fluid 102 of fluid flow port 236D and transferred to the active force between the hydraulic fluid 102 of fluid flow port 234D by second flow control device 180 by the second actuator pressure control gear 141 moves between each position.By the flow of hydraulic fluid 102 of control from second flow control device 180, piston 234A is activated between each position.Each position is a position of the shift rail of corresponding the 4th synchronizer assembly 30D (i.e. left side joint, the right joint and neutral gear) successively.The present invention can comprise vent put sensor 240D with the location transmission of shift fork 233D to controller 32.
During the routine work of hydraulic control system 100, accumulator 130 provides the hydraulic fluid 102 of pressurization to whole system, and pump 106 is used to inject fluid to accumulator 130.The selection of specific forward gears or reverse gear ratio by selectivity at first activate among the synchronizer assembly 30A-D one and subsequently of activating in the torque transmitter 22,24 of selectivity realize.Should be understood that the combination that provides the selectivity of the actuator 30A-D of forward gears or reverse gear ratio and torque transmitter 22,24 to engage can change, this does not depart from scope of the present invention.
Usually, the first actuator pressure control gear 140 optionally provides each and first flow control gear 178 to the synchronizer actuator 186A-B with the hydraulic fluid 102 of pressurization, and the second actuator pressure control gear 141 optionally provides each and second flow control device 180 to the synchronizer actuator 186C-D with the hydraulic fluid 102 of pressurization.From one flow in flow control device 178 and 180, can activate single synchronizer actuator 186A-D by control according to the location of first and second valve assemblys 182 and 184.
For example, in order to activate the first synchronizer assembly 30A, the pressure that acts on the piston 230A to provide is provided first pressure control device 140, and the flow of hydraulic fluid 102 that pressurization is provided is to first flow control gear 178.Then, by optionally making 178 energisings of first flow control gear realize the two-direction moving of the first synchronizer assembly 30A.In order to activate the second synchronizer assembly 30B, the pressure that acts on the piston 230B to provide is provided first pressure control device 140, and the flow of hydraulic fluid 102 that pressurization is provided is to first flow control gear 178.Then, by optionally making 178 energisings of first flow control gear realize the two-direction moving of the second synchronizer assembly 30B.
In order to activate the 3rd synchronizer assembly 30C, the pressure that acts on the piston 230C to provide is provided second pressure control device 141, and flow of hydraulic fluid 102 to second flow control devices 180 of pressurization are provided.Then, by optionally making 180 energisings of second flow control device realize the two-direction moving of the 3rd synchronizer assembly 30C.
In order to activate the 4th synchronizer assembly 30D, the pressure that acts on the piston 230D to provide is provided second pressure control device 141, and flow of hydraulic fluid 102 to second flow control devices 180 of pressurization are provided.Then, by optionally making 180 energisings of second flow control device realize the two-direction moving of the 4th synchronizer assembly 30D.
In order to engage or activate first torque transmitter 22, clutch pressure control device 136 and first clutch flow control device 144 are energized or open.In order to engage or activate second torque transmitter 24, clutch pressure control device 136 and second clutch flow control device 160 are energized or open.
By to clutch 22 and 24 and/or synchronizer assembly 30A-D carry out flow control, hydraulic control system 100 can provide the control of direct clutch position, directly control of synchronizer actuator position and variable clutch and the control of synchronizer actuator position.Simultaneously, the fast-response time of clutch is implemented, and spin loss is lowered, and the encapsulated space of hydraulic control system 100 is reduced, above-mentioned all improve and all help to improve fuel economy and operating characteristics.Hydraulic control system 100 can also with BAS/BAS+ mixed power system compatibility.At last, by the positioning control in advance of control gear 136,140,141,144,160,178,180 and valve 182 and 184, the fault mode protection is achieved.
The description of this invention only is exemplary in essence, and the modification that does not depart from basic principle of the present invention will fall within the scope of the present invention.These modification are not considered to depart from the spirit and scope of the present invention.
Claims (10)
1. hydraulic control system that is used to control double-clutch speed changer with a plurality of synchronizers, described hydraulic control system comprises:
The source of pressurized hydraulic fluid is provided;
First, second and the 3rd electromagnetic pressure control valve, described first, second is communicated with described source fluid in the downstream with the 3rd electromagnetic pressure control valve;
The first flow control electromagnetic valve, described first flow control electromagnetic valve is communicated with the described first electromagnetic pressure control valve fluid in the downstream;
The second flow control solenoid valve, the described second flow control solenoid valve is communicated with the described first electromagnetic pressure control valve fluid in the downstream;
The first clutch actuator, described first clutch actuator is communicated with to be used for optionally activating the first clutch of described double-clutch speed changer with described first flow control electromagnetic valve fluid in the downstream;
The second clutch actuator, described second clutch actuator is communicated with to be used for optionally activating the second clutch of described double-clutch speed changer with the described second flow control solenoid valve fluid in the downstream;
The 3rd flow control solenoid valve, described the 3rd flow control solenoid valve is communicated with the described second electromagnetic pressure control valve fluid in the downstream;
The 4th flow control solenoid valve, described the 4th flow control solenoid valve is communicated with described the 3rd electromagnetic pressure control valve fluid in the downstream;
First logic valve assembly, described first logic valve assembly is communicated with described the 3rd flow control solenoid valve and the described second electromagnetic pressure control valve fluid in the downstream, wherein, the described first logic control valve assembly has the guiding valve that can move between first and second positions;
Second logic valve assembly, described second logic valve assembly is communicated with described the 4th flow control solenoid valve and described the 3rd electromagnetic pressure control valve fluid in the downstream, wherein, the described second logic control valve assembly has the guiding valve that can move between first and second positions;
First actuator, described first actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in primary importance, described first actuator can move between first, second and the 3rd position optionally to engage or to disconnect in described a plurality of synchronizer first;
Second actuator, described second actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in the second place, described second actuator can move between first, second and the 3rd position optionally to engage or to disconnect in described a plurality of synchronizer second;
The 3rd actuator, described the 3rd actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in primary importance, described the 3rd actuator can move between first, second and the 3rd position optionally to engage or to disconnect in described a plurality of synchronizer the 3rd; And
The 4th actuator, described the 4th actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in the second place, described the 4th actuator can move between first, second and the 3rd position optionally engaging or to disconnect in described a plurality of synchronizer the 4th, and
Wherein, thereby described second electromagnetic pressure control valve generates first hydraulic fluid pressure and described the 3rd flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described first and second actuators in described first and second actuators at least one moved to first, in the second and the 3rd position at least one, and wherein, thus described the 3rd electromagnetic pressure control valve generates second hydraulic fluid pressure and described the 4th flow control solenoid valve to be changed at least one the flow of hydraulic fluid that flow in described third and fourth actuator in described third and fourth actuator at least one is moved to first, in the second and the 3rd position at least one.
2. hydraulic control system as claimed in claim 1, further comprise the logical valve control electromagnetic valve, described logical valve control electromagnetic valve is communicated with the described first electromagnetic pressure control valve fluid in the downstream, and is communicated with the described first and second logic valve assembly fluids in the upstream.
3. hydraulic control system as claimed in claim 1, wherein, described logical valve control electromagnetic valve is configured to the 3rd pressurized hydraulic fluid from described first electromagnetic pressure control valve is transferred to described first and second logic valve assemblies, thereby in the guiding valve of described first and second logic valve assemblies each is moved to the second place.
4. hydraulic control system that is used for controlling a plurality of synchronizers of double-clutch speed changer and speed changer, described hydraulic control system comprises:
The source of pressurized hydraulic fluid is provided;
First, second and the 3rd electromagnetic pressure control valve, each all has described first, second and the 3rd electromagnetic pressure control valve outlet and has the inlet that is communicated with described source fluid in the downstream;
First flow control electromagnetic valve, described first flow control electromagnetic valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The second flow control solenoid valve, the described second flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The first clutch actuator, described first clutch actuator is communicated with the described outlet fluid of described first flow control electromagnetic valve in the downstream, and described first clutch actuator configurations becomes optionally to activate the first clutch of described double-clutch speed changer;
The second clutch actuator, described second clutch actuator is communicated with the described outlet fluid of the described second flow control solenoid valve in the downstream, and described second clutch actuator configurations becomes optionally to activate the second clutch of described double-clutch speed changer;
The 3rd flow control solenoid valve, described the 3rd flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described second electromagnetic pressure control valve in the downstream;
The 4th flow control solenoid valve, described the 4th flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream;
First logic valve assembly, described first logic valve assembly is communicated with the described outlet of described the 3rd flow control solenoid valve and the described outlet fluid of described second electromagnetic pressure control valve in the downstream, wherein, the described first logic control valve assembly has the guiding valve that can move between first and second positions;
Second logic valve assembly, described second logic valve assembly is communicated with the described outlet of described the 4th flow control solenoid valve and the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream, wherein, the described second logic control valve assembly has the guiding valve that can move between first and second positions;
First actuator, described first actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in primary importance, described first actuator can move between first, second and the 3rd position;
Second actuator, described second actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in the second place, described second actuator can move between first, second and the 3rd position;
The 3rd actuator, described the 3rd actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in primary importance, described the 3rd actuator can move between first, second and the 3rd position; And
The 4th actuator, described the 4th actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, and when the described guiding valve of the described second logic control valve assembly during in the second place, described the 4th actuator can move between first, second and the 3rd position
Wherein, thereby described second electromagnetic pressure control valve generates first hydraulic fluid pressure and described the 3rd flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described first and second actuators in described first and second actuators at least one moved to first, in the second and the 3rd position at least one, thereby and wherein said the 3rd electromagnetic pressure control valve generates second hydraulic fluid pressure and described the 4th flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described third and fourth actuator in described third and fourth actuator at least one moved to first, in the second and the 3rd position at least one
Wherein, in the described first, second, third and the 4th actuator each all is configured to synchronizer is positioned between at least one engagement positio and the neutral position, and wherein, first and second positions of each in the described first, second, third and the 4th actuator are all corresponding to one in the neutral position of described synchronizer and the engagement positio.
5. hydraulic control system as claimed in claim 4, further comprise the logical valve control electromagnetic valve, described logical valve control electromagnetic valve is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream, and is communicated with the described first and second logic valve assembly fluids in the upstream.
6. hydraulic control system as claimed in claim 5, wherein, described logical valve control electromagnetic valve is configured to the 3rd pressurized hydraulic fluid from described first electromagnetic pressure control valve is transferred to described first and second logic valve assemblies, thereby in the guiding valve of described first and second logic valve assemblies each is all moved to the second place.
7. hydraulic control system as claimed in claim 4, wherein, described guiding valve by moving described first and second logic valve assemblies and change described first and second flow of hydraulic fluid and act on the power that is generated in the described first, second, third and the 4th actuator each to overcome or not overcome by in described first and second pressurized hydraulic fluids each, the described first, second, third and the 4th actuator is moved between first and second positions separately.
8. hydraulic control system as claimed in claim 4, wherein, described source comprises pump and accumulator.
9. hydraulic control system that is used for controlling a plurality of synchronizers of double-clutch speed changer and speed changer, described hydraulic control system comprises:
The source of pressurized hydraulic fluid is provided;
First, second and the 3rd electromagnetic pressure control valve, each all has described first, second and the 3rd electromagnetic pressure control valve outlet and has the inlet that is communicated with described source fluid in the downstream;
First flow control electromagnetic valve, described first flow control electromagnetic valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The second flow control solenoid valve, the described second flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described first electromagnetic pressure control valve in the downstream;
The first clutch actuator, described first clutch actuator is communicated with the described outlet fluid of described first flow control electromagnetic valve in the downstream, and described first clutch actuator configurations becomes optionally to activate the first clutch of described double-clutch speed changer;
The second clutch actuator, described second clutch actuator is communicated with the described outlet fluid of the described second flow control solenoid valve in the downstream, and described second clutch actuator configurations becomes optionally to activate the second clutch of described double-clutch speed changer;
The 3rd flow control solenoid valve, described the 3rd flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described second electromagnetic pressure control valve in the downstream;
The 4th flow control solenoid valve, described the 4th flow control solenoid valve have outlet and have the inlet that is communicated with the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream;
First logic valve assembly, described first logic valve assembly is communicated with the described outlet of described the 3rd flow control solenoid valve and the described outlet fluid of described second electromagnetic pressure control valve in the downstream, wherein, the described first logic control valve assembly has the guiding valve that can move between first and second positions;
Second logic valve assembly, described second logic valve assembly is communicated with the described outlet of described the 4th flow control solenoid valve and the described outlet fluid of described the 3rd electromagnetic pressure control valve in the downstream, wherein, the described second logic control valve assembly has the guiding valve that can move between first and second positions;
Logical valve control electromagnetic valve, described logical valve control electromagnetic valve have inlet that is communicated with the described first electromagnetic pressure control valve fluid in the downstream and the outlet that is communicated with the described first and second logic valve assembly fluids in the upstream;
First actuator, described first actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in primary importance, described first actuator can move between first, second and the 3rd position;
Second actuator, described second actuator is communicated with the described first logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described first logic control valve assembly during in the second place, described second actuator can move between first, second and the 3rd position;
The 3rd actuator, described the 3rd actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, when the described guiding valve of the described second logic control valve assembly during in primary importance, described the 3rd actuator can move between first, second and the 3rd position; And
The 4th actuator, described the 4th actuator is communicated with the described second logic valve assembly fluid in the downstream, wherein, and when the described guiding valve of the described second logic control valve assembly during in the second place, described the 4th actuator can move between first, second and the 3rd position
Wherein, thereby described second electromagnetic pressure control valve generates first hydraulic fluid pressure and described the 3rd flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described first and second actuators in described first and second actuators at least one moved to first, in the second and the 3rd position at least one, thereby and wherein said the 3rd electromagnetic pressure control valve generates second hydraulic fluid pressure and described the 4th flow control solenoid valve and changes at least one the flow of hydraulic fluid that flow in described third and fourth actuator in described third and fourth actuator at least one moved to first, in the second and the 3rd position at least one
Wherein, described logical valve control electromagnetic valve is configured to the 3rd pressurized hydraulic fluid from described first electromagnetic pressure control valve is transferred to described first and second logic valve assemblies, thereby in the guiding valve of described first and second logic valve assemblies each is all moved to the second place, and
Wherein, in the described first, second, third and the 4th actuator each all is configured to synchronizer is positioned between at least one engagement positio and the neutral position, and wherein, first and second positions of each in the described first, second, third and the 4th actuator are all corresponding to one in the neutral position of described synchronizer and the engagement positio.
10. hydraulic control system as claimed in claim 9, wherein, described guiding valve by moving described first and second logic valve assemblies and change described first and second flow of hydraulic fluid and act on the power that is generated in the described first, second, third and the 4th actuator each to overcome or not overcome by in described first and second pressurized hydraulic fluids each, the described first, second, third and the 4th actuator is moved between first and second positions separately.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US29749010P | 2010-01-22 | 2010-01-22 | |
| US61/297490 | 2010-01-22 | ||
| US12/974,798 US8567580B2 (en) | 2010-01-22 | 2010-12-21 | Electro-hydraulic control system for a dual clutch transmission |
| US12/974798 | 2010-12-21 |
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| Publication Number | Publication Date |
|---|---|
| CN102135175A true CN102135175A (en) | 2011-07-27 |
| CN102135175B CN102135175B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110024067.5A Active CN102135175B (en) | 2010-01-22 | 2011-01-21 | Electro-hydraulic control system for a dual clutch transmission |
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Also Published As
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| CN102135175B (en) | 2014-08-06 |
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