CN204312690U - The shifting control system of automatic transmission - Google Patents
The shifting control system of automatic transmission Download PDFInfo
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- CN204312690U CN204312690U CN201420692010.1U CN201420692010U CN204312690U CN 204312690 U CN204312690 U CN 204312690U CN 201420692010 U CN201420692010 U CN 201420692010U CN 204312690 U CN204312690 U CN 204312690U
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Abstract
A shifting control system for automatic transmission, comprises main pump, four shift cylinders, gearshift control valve, the first gear switching valve, the second gear switching valve, first gear bit switch valve and second gear bit switch valve; Gearshift control valve has pressure introduction port and two pressure outputs, and the first gear switching valve has two pressure introduction port and four pressure outputs, and the second gear switching valve has two pressure introduction port and four pressure outputs; First gear bit switch valve is connected between the first gear switching valve and gearshift control valve, to disconnect or to be communicated with gearshift control valve and the first gear switching valve; Second gear bit switch valve is connected between the second gear switching valve and gearshift control valve, to disconnect or to be communicated with gearshift control valve and the second gear switching valve; Four pressure outputs of the first gear switching valve and four pressure outputs of the second gear switching valve are connected with four shift cylinders.
Description
Technical field
The utility model relates to the technical field of the automatic transmission of automobile, especially relates to a kind of shifting control system of automatic transmission.
Background technique
Along with the progress of science and technology, the mode that automobile realizes speed change is developed towards automatic speed changing by hand gear gradually, and automatic speed changing is realized by automatic transmission.Wherein, double-clutch automatic gearbox receives the welcome in market owing to having the advantages such as transmission efficiency is high, have employed two clutches in double-clutch automatic gearbox, one of them clutch is for controlling odd number gear, and another clutch is for controlling even number gear, by automatically switching between two clutches thus completing gearshift program, the power gear shifting of shift process therefore can be realized, namely interrupt power at shift process, improve the travelling comfort of vehicle operating.
Automatic transmission, when realizing self shifter, needs this system parts of gear shifting actuating mechanism, and its effect realizes automatic gear change function, current more employing hydraulic type gear shifting actuating mechanism.Gearshift is generally by being keyed to reference axis and the synchronizer rotated has come thereupon, one-sided or the bilateral of synchronizer is provided with the gear that can provide different drive ratios, under the effect of gear shifting actuating mechanism, synchronizer be struck move in the axial direction and with contiguous gear engagement, gear couplings to axle will realize the synchronous of gear and axle, thus outputting power.
The more employing of current automatic transmission eight gears (comprise and reversing gear), utilize shifting control system to control gear shifting actuating mechanism, to complete the gear shift operation of these eight gears.In prior art, in order to realize gearshift control and the safety control function of automatic transmission, this shifting control system generally have employed guiding valve and the solenoid valve of a greater number, and make system become comparatively complicated, the efficiency that transmission controls is lower.
Model utility content
The purpose of this utility model is the shifting control system providing a kind of automatic transmission, to realize, when the quantity of spool control valve and solenoid valve is the least possible, realizing gearshift control and the safety control function of automatic transmission.
The utility model embodiment provides a kind of shifting control system of automatic transmission, and comprise main pump and four shift cylinders, this shifting control system also comprises:
Gearshift control valve, this gearshift control valve has pressure introduction port and two pressure outputs, this gearshift control valve can switch between the first working position and the second working position, when this gearshift control valve is in the first working position, one of them in this pressure introduction port and this two pressure outputs is communicated with, when this gearshift control valve is in the second working position, in this pressure introduction port and this two pressure outputs wherein another is communicated with;
First gear switching valve, this the first gear switching valve has two pressure introduction port and four pressure outputs, this the first gear switching valve can switch between the first working position and the second working position, when this first gear switching valve is in the first working position, two pressure introduction port of this first gear switching valve are communicated with wherein two pressure outputs in four pressure outputs of this first gear switching valve respectively, when this first gear switching valve is in the second working position, two pressure introduction port of this first gear switching valve are communicated with two other pressure output in four pressure outputs of this first gear switching valve respectively,
Second gear switching valve, this the second gear switching valve has two pressure introduction port and four pressure outputs, this the second gear switching valve can switch between the first working position and the second working position, when this second gear switching valve is in the first working position, two pressure introduction port of this second gear switching valve are communicated with wherein two pressure outputs in four pressure outputs of this second gear switching valve respectively, when this second gear switching valve is in the second working position, two pressure introduction port of this second gear switching valve are communicated with two other pressure output in four pressure outputs of this second gear switching valve respectively,
First gear bit switch valve, this first gear bit switch valve is connected between this first gear switching valve and this gearshift control valve, this first gear bit switch valve can switch between a closed position and a open position, when this first gear bit switch valve is in the closed position, two pressure outputs of this gearshift control valve disconnect with two pressure introduction port of this first gear switching valve respectively, when this first gear bit switch valve is in an open position, two pressure outputs of this gearshift control valve are communicated with two pressure introduction port of this first gear switching valve respectively; And
Second gear bit switch valve, this second gear bit switch valve is connected between this second gear switching valve and this gearshift control valve, this second gear bit switch valve can switch between a closed position and a open position, when this second gear bit switch valve is in the closed position, two pressure outputs of this gearshift control valve disconnect with two pressure introduction port of this second gear switching valve respectively, when this second gear bit switch valve is in an open position, two pressure outputs of this gearshift control valve are communicated with two pressure introduction port of this second gear switching valve respectively;
Wherein, wherein two shift cylinders in four pressure outputs and this four shift cylinders of this first gear switching valve are connected, and two other shift cylinder in four pressure outputs and this four shift cylinders of this second gear switching valve is connected.
In the utility model embodiment, by to the gearshift control valve in shifting control system, first gear switching valve, second gear switching valve, first gear bit switch valve and second gear bit switch valve control, the automatic gear change function to the automatic transmission with eight speed (seven forward gears and reverse gear) can be realized, greatly simplify the quantity of element in system, make when the quantity of spool control valve and solenoid valve is the least possible, realize gearshift control and the safety control function of automatic transmission, system is made to become simpler, the efficiency that transmission controls is higher.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to technological means of the present utility model can be better understood, and can be implemented according to the content of specification, and can become apparent to allow above and other object of the present utility model, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the principle sketch of the shifting control system of automatic transmission in the utility model embodiment.
Embodiment
For further setting forth the utility model for the technological means reaching predetermined model utility object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in detail as follows.
Fig. 1 is the principle sketch of the shifting control system of automatic transmission in the utility model embodiment, please refer to the drawing 1, this shifting control system is used in automatic gearbox, especially double-clutch automatic gearbox, and this shifting control system comprises main pump 11, gearshift control valve 12, first gear switching valve 13, second gear switching valve 14, first gear bit switch valve 15, second gear bit switch valve 16, odd even selector valve 17, first clutch solenoid valve 18, second clutch solenoid valve 19.
Main pump 11 via oil absorption filter 21 oil suction from fuel tank 22, thus provides the pressure oil needed for work in this shifting control system.In the present embodiment, main pump 11 is by the internal combustion engine drive of automobile, auxiliary pump 23 is also provided with in this shifting control system, auxiliary pump 23 is driven by motor, main pump 11 can be assisted when the oil transportation quantity not sufficient of main pump 11 in auxiliary pump 23 1 aspect, can stop also guaranteeing pressure oil supplying in system therefore main pump 11 stops at internal-combustion engine on the other hand.Auxiliary pump 23 is same via oil absorption filter 21 oil suction from fuel tank 22.Multiple positions of Fig. 1 employ fuel tank symbol, and these fuel tank symbols are interpreted as by relevant pipeline connection to fuel tank 22.
In order to stop fluid reverse flow, the delivery outlet of main pump 11 is connected with main pump one-way valve 24, in the present embodiment, main pump one-way valve 24 is the one-way valve of hydraulic control, the pressure oil feedback effect that main pump 11 exports is at the control end of main pump one-way valve 24, the spring of spring terminal is arranged on opposing, only when the delivery pressure of main pump 11 is enough to overcome spring force, main pump one-way valve 24 just switches to open position from the closed position shown in Fig. 1, that is, as long as when enough pressure also do not set up by main pump 11, the remaining part of main pump 11 with this shifting control system just disconnects by main pump one-way valve 24.Main pump one-way valve 24 1 aspect flows towards the direction of main pump 11 for stoping fluid, on the other hand for ensureing the starting characteristic of necessity of main pump 11.Understandably, main pump one-way valve 24 also can be common one-way valve.
In order to the pressure maximum in control system, the delivery outlet of main pump one-way valve 24 is also connected with security of system valve 25, security of system valve 25 can be safety overflow valve or common one-way valve, in the present embodiment, security of system valve 25 is common one-way valve, it is connected between the delivery outlet of main pump one-way valve 24 and fuel tank 22, the filler opening of one-way valve is connected with the delivery outlet of main pump one-way valve 24, the oil outlet of one-way valve is connected with fuel tank 22, by the pressure maximum allowed in one-way valve initialization system, when the pressure in system exceedes this pressure maximum, one-way valve opens carries out draining.
Gearshift control valve 12 has pressure introduction port 121 and two pressure outputs 122,123 (hereinafter referred to as the first pressure output 122 and the second pressure output 123), and the pressure introduction port 121 of gearshift control valve 12 is connected with main pump 11 via main pump one-way valve 24.Gearshift control valve 12 can switch between the first working position and the second working position, when gearshift control valve 12 is in the first working position, pressure introduction port 121 is communicated with one of them in two pressure outputs 122,123, gearshift control valve 12 is when being in the second working position, pressure introduction port 121 with in two pressure outputs 122,123 wherein another is communicated with.In the present embodiment, when control valve 12 of shifting gears is in the first working position (left position as shown in Figure 1), pressure introduction port 121 is communicated with the first pressure output 122, and the second pressure output 123 is communicated with fuel tank 22; When shift gears control valve 12 switch to be in the second working position (right position as shown in Figure 1) time, pressure introduction port 121 is communicated with the second pressure output 123, and the first pressure output 122 is communicated with fuel tank 22.That is, by changing the working position of gearshift control valve 12, can optionally the pressure oil from main pump 11 be directed on one of these two pressure outputs 122,123.
Gearshift control valve 12 can be solenoid directional control valve or the pilot operated directional control valve of sliding valve style.When control valve 12 of shifting gears be solenoid directional control valve, by the switch operation of the simple control valve 12 that must electricly can to realize with dead electricity shifting gears.When different gear carries out gear shift operation, required gearshift pressure usually can be different, in order to realize two pressure outputs 122, the 123 gearshift pressure exported can meet the gearshift demand under different gear, in the present embodiment, gearshift control valve 12 adopts the hydraulic control proportional reversing valve of sliding valve style, this shifting control system also comprises gearshift pressure solenoid valve 26, the pressure output of gearshift pressure solenoid valve 26 is connected with the control end of gearshift control valve 12, when pressure solenoid valve 26 of shifting gears is opened, the pilot pressure that gearshift pressure solenoid valve 26 exports acts on the control end of gearshift control valve 12, switch operation is carried out to promote gearshift control valve 12, in addition, pressure feedback is also acted on the two ends of gearshift control valve 12 by two pressure outputs 122,123 of gearshift control valve 12 respectively, exports different gearshift pressure with two pressure outputs 122,123 being realized gearshift control valve 12 by gearshift pressure solenoid valve 26 under difference gearshift demand.
First gear switching valve 13 has two pressure introduction port 131,132 (hereinafter referred to as the first pressure introduction port 131 and the second pressure introduction port 132) and four pressure outputs 133,134,135,136 (hereinafter referred to as the first pressure output 133, second pressure output 134, the 3rd pressure output 135 and the 4th pressure output 136).First gear switching valve 13 can switch between the first working position and the second working position, when first gear switching valve 13 is in the first working position, two pressure introduction port 131,132 are communicated with wherein two pressure outputs in four pressure outputs 133,134,135,136 respectively, when first gear switching valve 13 is in the second working position, two pressure introduction port 131,132 are communicated with two other pressure output in four pressure outputs 133,134,135,136 respectively.In the present embodiment, when the first gear switching valve 13 is in the first working position (left position as shown in Figure 1), two pressure introduction port 131,132 are communicated with the 3rd pressure output 135 with the first pressure output 133 respectively, and the second pressure output 134 and the 4th pressure output 136 are communicated to fuel tank 22; When the first gear switching valve 13 is in the second working position (right position as shown in Figure 1), two pressure introduction port 131,132 are communicated with the 4th pressure output 136 with the second pressure output 134 respectively, and the first pressure output 133 and the 3rd pressure output 135 are communicated to fuel tank 22.That is, by changing the working position of the first gear switching valve 13, optionally the first pressure introduction port 131 can be communicated with the first pressure output 133 or the second pressure output 134, and optionally the second pressure introduction port 132 be communicated with the 3rd pressure output 135 or the 4th pressure output 136.
Second gear switching valve 14 has two pressure introduction port 141,142 (hereinafter referred to as the first pressure introduction port 141 and the second pressure introduction port 142) and four pressure outputs 143,144,145,146 (hereinafter referred to as the first pressure output 143, second pressure output 144, the 3rd pressure output 145 and the 4th pressure output 146).Second gear switching valve 14 can switch between the first working position and the second working position, when second gear switching valve 14 is in the first working position, two pressure introduction port 141,142 are communicated with wherein two pressure outputs in four pressure outputs 143,144,145,146 respectively, when second gear switching valve 14 is in the second working position, two pressure introduction port 141,142 are communicated with two other pressure output in four pressure outputs 143,144,145,146 respectively.In the present embodiment, when the second gear switching valve 14 is in the first working position (right position as shown in Figure 1), two pressure introduction port 141,142 are communicated with the 3rd pressure output 145 with the first pressure output 143 respectively, and the second pressure output 144 and the 4th pressure output 146 are communicated to fuel tank 22; When the second gear switching valve 14 is in the second working position (left position as shown in Figure 1), two pressure introduction port 141,142 are communicated with the 4th pressure output 146 with the second pressure output 144 respectively, and the first pressure output 143 and the 3rd pressure output 145 are communicated to fuel tank 22.That is, by changing the working position of the second gear switching valve 14, optionally the first pressure introduction port 141 can be communicated with the first pressure output 143 or the second pressure output 144, and optionally the second pressure introduction port 142 be communicated with the 3rd pressure output 145 or the 4th pressure output 146.
First gear bit switch valve 15 is connected between the first gear switching valve 13 and gearshift control valve 12, first gear bit switch valve 15 can switch between a closed position and a open position, when first gear bit switch valve 15 is in the closed position, two pressure outputs 122,123 of gearshift control valve 12 disconnect with two pressure introduction port 131,132 of the first gear switching valve 13 respectively; When first gear bit switch valve 15 is in an open position, two pressure outputs 122,123 of gearshift control valve 12 are communicated with two pressure introduction port 131,132 of the first gear switching valve 13 respectively.In the present embodiment, when first gear bit switch valve 15 (left position as shown in Figure 1) in the closed position, two pressure outputs 122,123 of gearshift control valve 12 are cut off at first gear bit switch valve 15, two pressure introduction port 131,132 of the first gear switching valve 13 are communicated to fuel tank 22 via first gear bit switch valve 15, thus two pressure introduction port 131,132 of two pressure outputs 122,123 and first gear switching valve 13 of gearshift control valve 12 are off state; When first gear bit switch valve 15 (right position as shown in Figure 1) in an open position, two pressure outputs 122,123 of gearshift control valve 12 are connected together with two pressure introduction port 131,132 of the first gear switching valve 13 respectively.
Second gear bit switch valve 16 is connected between the second gear switching valve 14 and gearshift control valve 12, second gear bit switch valve 16 can switch between a closed position and a open position, when second gear bit switch valve 16 is in the closed position, two pressure outputs 122,123 of gearshift control valve 12 disconnect with two pressure introduction port 141,142 of the second gear switching valve 14 respectively; When second gear bit switch valve 16 is in an open position, two pressure outputs 122,123 of gearshift control valve 12 are communicated with two pressure introduction port 141,142 of the second gear switching valve 14 respectively.In the present embodiment, when second gear bit switch valve 16 (right position as shown in Figure 1) in the closed position, two pressure outputs 122,123 of gearshift control valve 12 are cut off at second gear bit switch valve 16, two pressure introduction port 141,142 of the second gear switching valve 14 are communicated to fuel tank 22 via second gear bit switch valve 16, thus two pressure introduction port 141,142 of two pressure outputs 122,123 and second gear switching valve 14 of gearshift control valve 12 are off state; When second gear bit switch valve 16 (left position as shown in Figure 1) in an open position, two pressure outputs 122,123 of gearshift control valve 12 are connected together with two pressure introduction port 141,142 of the second gear switching valve 14 respectively.
First gear bit switch valve 15 and second gear bit switch valve 16 can be solenoid directional control valve or the pilot operated directional control valve of sliding valve style particularly.When first gear bit switch valve 15 and second gear bit switch valve 16 adopt solenoid directional control valve, by simple the electric switch operation that can realize first gear bit switch valve 15 and second gear bit switch valve 16 with dead electricity.In the present embodiment, first gear bit switch valve 15 and second gear bit switch valve 16 all adopt the pilot operated directional control valve of sliding valve style, this shifting control system also comprises the first gear solenoid valve 27 and the second gear solenoid valve 28, first gear solenoid valve 27 and the second gear solenoid valve 28 are specifically as follows proportional electromagnetic valve, first gear solenoid valve 27 can export adjustable first gear pilot pressure, second gear solenoid valve 28 can export adjustable second gear pilot pressure, wherein this first gear pilot pressure acts on the opening end 151 of first gear bit switch valve 15 and the shutdown side 162 of second gear bit switch valve 16, this the second gear pilot pressure acts on the opening end 161 of second gear bit switch valve 16 and the shutdown side 152 of first gear bit switch valve 15, thus, two gear on-off valves 15, 16 can by realizing interlocking while this first gear pilot pressure and this second gear pilot pressure realization commutation, improve security of system, that is: when the first gear pilot pressure exported when the first gear solenoid valve 27 makes first gear bit switch valve 15 be in opening state, this the first gear pilot pressure is in closed condition by making second gear bit switch valve 16 simultaneously, when the second gear pilot pressure that the second gear solenoid valve 28 exports makes second gear bit switch valve 16 be in opening state, this second gear pilot pressure is in closed condition by making first gear bit switch valve 15 simultaneously.In addition, the shutdown side 152 of first gear bit switch valve 15 and the shutdown side 162 of second gear bit switch valve 16 are also respectively equipped with spring, with the reset function utilizing spring to provide these two gear on-off valves 15,16 after shutdown.
First gear switching valve 13 and the second gear switching valve 14 can be solenoid directional control valve or the pilot operated directional control valve of sliding valve style particularly.When the first gear switching valve 13 and the second gear switching valve 14 adopt solenoid directional control valve, by simple the electric switch operation that can realize the first gear switching valve 13 and the second gear switching valve 14 with dead electricity.In the present embodiment, first gear switching valve 13 and the second gear switching valve 14 all adopt the pilot operated directional control valve of sliding valve style, first gear switching valve 13 also has the first control end 137 and the second control end 138, first control end 137 and the second control end 138 lay respectively at the two ends of the first gear switching valve 13, second gear switching valve 14 also has the two ends that the first control end 147 and the second control end 148, first control end 147 and the second control end 148 lay respectively at the second gear switching valve 14.First control end 137 of the first gear switching valve 13 is connected with the first control end 147 of the second gear switching valve 14 and is connected to an oil circuit control, and the second control end 138 of the first gear switching valve 13 is connected with the second control end 148 of the second gear switching valve 14 and is connected to another oil circuit control.
This shifting control system also comprises four shift cylinders 41,42,43,44 (hereinafter referred to as the first shift cylinder 41, second shift cylinder 42, the 3rd shift cylinder 43 and the 4th shift cylinder 44).Four pressure outputs 133,134,135,136 of the first gear switching valve 13 are connected with wherein two shift cylinders in four shift cylinders 41,42,43,44, and four pressure outputs 143,144,145,146 of the second gear switching valve 14 are connected with two other shift cylinder in four shift cylinders 41,42,43,44.In the present embodiment, four pressure outputs 133,134,135,136 of the first gear switching valve 13 are connected with the second shift cylinder 42 with the first shift cylinder 41, and four pressure outputs 143,144,145,146 of the second gear switching valve 14 are connected with the 4th shift cylinder 44 with the 3rd shift cylinder 43.First pressure output 133 of the first gear switching valve 13 and the 3rd pressure output 135 are connected to the two ends of the first shift cylinder 41 respectively, second pressure output 134 of the first gear switching valve 13 and the 4th pressure output 136 are connected to the two ends of the second shift cylinder 42 respectively, first pressure output 143 of the second gear switching valve 14 and the 3rd pressure output 145 are connected to the two ends of the 3rd shift cylinder 43 respectively, and the second pressure output 144 of the second gear switching valve 14 and the 4th pressure output 146 are connected to the two ends of the 4th shift cylinder 44 respectively.Each shift cylinder moves to realize putting into gear or plucking gear of two gears for driving a corresponding selector fork, such as the first shift cylinder 41 is used for controlling three gears and seven gears, second shift cylinder 42 is used for control to reverse gear and six gears, 3rd shift cylinder 43 is used for controlling a gear and five gears, and the 4th shift cylinder 44 is used for controlling two gears and four gears, like this, by to the gearshift control valve 12 in this shifting control system, first gear switching valve 13, second gear switching valve 14, first gear bit switch valve 15 and second gear bit switch valve 16 control, the automatic gear change function to the automatic transmission with eight speed (seven forward gears and reverse gear) can be realized, greatly simplify the quantity of element in system, make when the quantity of spool control valve and solenoid valve is the least possible, realize gearshift control and the safety control function of automatic transmission, system is made to become simpler, control realization is more efficient.
Odd even selector valve 17 has pressure introduction port 171, first pressure output 172 and the second pressure output 173, first pressure output 172 is connected with the first control end 137 of the first gear switching valve 13 and the first control end 147 of the second gear switching valve 14, and the second pressure output 173 is connected with the second control end 138 of the first gear switching valve 13 and the second control end 148 of the second gear switching valve 14.Odd even selector valve 17 can switch between the first working position and the second working position, when odd even selector valve 17 is in the first working position, pressure introduction port 171 is communicated with the first pressure output 172, when odd even selector valve 17 is in the second working position, pressure introduction port 171 is communicated with the second pressure output 173.In the present embodiment, when odd even selector valve 17 is in the first working position (right position as shown in Figure 1), pressure introduction port 171 is communicated with the first pressure output 172, and the second pressure output 173 is communicated with fuel tank 22; When odd even selector valve 17 switch to be in the second working position (left position as shown in Figure 1) time, pressure introduction port 171 is communicated with the second pressure output 173, and the first pressure output 172 is communicated with fuel tank 22.
In the present embodiment, odd even selector valve 17 is the pilot operated directional control valve of sliding valve style, the two ends of odd even selector valve 17 have the first control end 175 and the second control end 176 respectively, first clutch solenoid valve 18 has pressure introduction port 181 and pressure output 182, and the pressure output 182 of first clutch solenoid valve 18 is connected with the first control end 175 of odd even selector valve 17.When first clutch solenoid valve 18 is opened, pressure introduction port 181 is communicated with pressure output 182, the pilot pressure that first clutch solenoid valve 18 exports acts on the first control end 175 of odd even selector valve 17, promotes the commutation of odd even selector valve 17 and makes it be in the second working position (left position as shown in Figure 1).
Second clutch solenoid valve 19 has pressure introduction port 191 and pressure output 192, and the pressure output 192 of second clutch solenoid valve 19 is connected with the second control end 176 of odd even selector valve 17.When second clutch solenoid valve 19 is opened, pressure introduction port 191 is communicated with pressure output 192, the pilot pressure that second clutch solenoid valve 19 exports acts on the second control end 176 of odd even selector valve 17, promotes the commutation of odd even selector valve 17 and makes it be in the first working position (right position as shown in Figure 1).Wherein, first clutch solenoid valve 18 is for controlling the joint of first clutch (not shown), second clutch solenoid valve 19 is for controlling the joint of second clutch (not shown), and the pressure introduction port 171 of odd even selector valve 17, the pressure introduction port 181 of first clutch solenoid valve 18 are all connected with main pump 11 with the pressure introduction port 191 of second clutch solenoid valve 19.
When first clutch solenoid valve 18 is opened, odd even selector valve 17 will be made to be in the second working position (left position as shown in Figure 1), now the pressure introduction port 171 of odd even selector valve 17 is connected with the second pressure output 173, odd even selector valve 17 applies pilot pressure to the second control end 138 of the first gear switching valve 13 and the second control end 148 of the second gear switching valve 14 simultaneously, the first gear switching valve 13 is made to switch to the second working position (right position as shown in Figure 1), first pressure introduction port 131 of the first gear switching valve 13 can only be connected with the 4th pressure output 136 with the second pressure output 134 with the second pressure introduction port 132, and make the second gear switching valve 14 switch to the second working position (left position as shown in Figure 1) simultaneously, first pressure introduction port 141 of the second gear switching valve 14 can only be connected with the 4th pressure output 146 with the second pressure output 144 with the second pressure introduction port 142.And first clutch solenoid valve 18 is when opening, the first clutch now controlling odd number gear is in the working state engaged, double-clutch automatic gearbox is just being operated in odd number gear, the gear that then next will be linked into is even number gear, therefore by the design of suitable gear, such as by the second shift cylinder 42 be connected with the 4th pressure output 136 with the second pressure output 134 of the first gear switching valve 13 and be all designed for controlling even number gear with the 4th shift cylinder 44 that the second pressure output 144 of the second gear switching valve 14 is connected with the 4th pressure output 146, then can only be linked into even number gear when first clutch solenoid valve 18 is opened by the first gear switching valve 13 and the second gear switching valve 14, thus realize when the first clutch work of odd number gear, quiescing odd number gear.
When second clutch solenoid valve 19 is opened, odd even selector valve 17 will be made to be in the first working position (right position as shown in Figure 1), now the pressure introduction port 171 of odd even selector valve 17 is connected with the first pressure output 172, odd even selector valve 17 applies pilot pressure to the first control end 137 of the first gear switching valve 13 and the first control end 147 of the second gear switching valve 14 simultaneously, the first gear switching valve 13 is made to switch to the first working position (left position as shown in Figure 1), first pressure introduction port 131 of the first gear switching valve 13 can only be connected with the 3rd pressure output 135 with the first pressure output 133 with the second pressure introduction port 132, and make the second gear switching valve 14 switch to the first working position (right position as shown in Figure 1) simultaneously, first pressure introduction port 141 of the second gear switching valve 14 can only be connected with the 3rd pressure output 145 with the first pressure output 143 with the second pressure introduction port 142.And second clutch solenoid valve 19 is when opening, the second clutch now controlling even number gear is in the working state engaged, double-clutch automatic gearbox is just being operated in even number gear, the gear that then next will be linked into is odd number gear, therefore by the design of suitable gear, such as by the first shift cylinder 41 be connected with the 3rd pressure output 135 with the first pressure output 133 of the first gear switching valve 13 and be all designed for controlling odd number gear with the 3rd shift cylinder 43 that the first pressure output 143 of the second gear switching valve 14 is connected with the 3rd pressure output 145, then can only be linked into odd number gear when second clutch solenoid valve 19 is opened by the first gear switching valve 13 and the second gear switching valve 14, thus realize when the second clutch work of even number gear, quiescing even number gear.That is, by controlling the first gear switching valve 13, second gear switching valve 14, odd even selector valve 17, first clutch solenoid valve 18 and the second clutch solenoid valve 19 in this shifting control system, can realize when the clutch work of odd number gear (or even number gear), quiescing odd number gear (or even number gear), thus avoid occurring misoperation and damage automatic transmission, improve security of system and robustness.
Reverse gear to hang up when first clutch solenoid valve 18 and second clutch solenoid valve 19 are not all opened, odd even selector valve 17 also has the 3rd control end 177, 3rd control end 177 and the first control end 175 are positioned at same one end of odd even selector valve 17, 3rd control end 177 is connected with the first switch electromagnetic valve 29, when the first switch electromagnetic valve 29 is opened, first switch electromagnetic valve 29 pressure output control is also applied to the 3rd control end 177 of odd even selector valve 17, promoting the commutation of odd even selector valve 17 makes it be in the second working position (left position as shown in Figure 1), be beneficial to can select to reverse gear.
In the present embodiment, be also connected with odd number gear pressure transducer 31 at the pressure output 182 of first clutch solenoid valve 18, to detect working pressure when driving first clutch to engage; Same, be also connected with even number gear pressure transducer 32 at the pressure output 192 of second clutch solenoid valve 19, to detect working pressure when driving second clutch to engage.In order to pipeline being cut off when there is pressure anomaly in the pipeline that engages at clutch, the pressure output 182 of first clutch solenoid valve 18 and the pressure output 192 of second clutch solenoid valve 19 are also connected with clutch safety cut-off valve 33, the pressure output of the first gear solenoid valve 27 and the pressure output of the second gear solenoid valve 28 are also connected to the same control end of clutch safety cut-off valve 33 simultaneously, when the first gear solenoid valve 27 and the second gear solenoid valve 28 are all opened, first gear solenoid valve 27 export pilot pressure and the second gear solenoid valve 28 export pilot pressure force action under, closed position (left position as shown in Figure 1) is switched to from open position (right position as shown in Figure 1) by promoting clutch safety cut-off valve 33, with the oil circuit control that cutting-off controlling clutch engages.
In order to make to be applied to gearshift control valve 12, first gear switching valve 13, second gear switching valve 14, pilot pressure on each control end of first gear bit switch valve 15 and second gear bit switch valve 16 tends to be steady, to improve the smoothness of each valve body when switch operation, solenoid pressure regulator 34 is also connected with at the delivery outlet of main pump 11, solenoid pressure regulator 34 is the proportional pressure-reducing valve of sliding valve style, solenoid pressure regulator 34 has pressure introduction port 341 and pressure output 342, pressure introduction port 341 is connected with main pump 11, pressure output 342 and each solenoid valve 26, 27, 28, 29 and odd even selector valve 17 pressure introduction port be connected, pressure feedback is also acted on one end of solenoid pressure regulator 34 by the pressure output 342 of solenoid pressure regulator 34, to react on the spring being arranged on solenoid pressure regulator 34 the other end.Like this, even if there is fluctuation in the delivery pressure of main pump 11, after the adjustment through solenoid pressure regulator 34, the pressure that pressure output 342 is exported remains relatively steady, thus makes also to be tended to be steady by each solenoid valve 26,27,28,29 and the after-applied pilot pressure on each control end of odd even selector valve 17.
This shifting control system further comprises working connection pressure solenoid valve 35 and working connection Pressure relief valve 36, the pressure introduction port of working connection pressure solenoid valve 35 is connected with the pressure output 342 of solenoid pressure regulator 34, the pressure output of working connection pressure solenoid valve 35 is connected with the shutdown side (this shutdown side is also provided with spring) of working connection Pressure relief valve 36, working connection Pressure relief valve 36 has pressure introduction port, first pressure output and the second pressure output, the opening end (namely contrary with shutdown side one end) of working connection Pressure relief valve 36 is all connected with the delivery outlet of main pump 11 with pressure introduction port, first pressure output of working connection Pressure relief valve 36 is connected with the oiler of main pump 11, second pressure output of working connection Pressure relief valve 36 then leads to lubricating and cooling system 50.The pilot pressure on the shutdown side being applied to working connection Pressure relief valve 36 can be changed by working connection pressure solenoid valve 35, working connection Pressure relief valve 36 is changed from closed position to open position, thus make a part of fluid in working connection system can transfer to lubricating and cooling system 50 via working connection Pressure relief valve 36, to meet the needs cooling fluid and lubricate related elements.
Lubricating and cooling system 50 comprises cooling flow pressure-limit valve 51, oil cooler 52, filter-press 53, one-way valve 54, control valve for small flows 55, large flux control valve 56 and second switch solenoid valve 57.Cooling flow pressure-limit valve 51 is connected with the second pressure output of working connection Pressure relief valve 36, and cooling flow pressure-limit valve 51 is for playing the effect of the oil pressure in restriction lubricating and cooling system 50.Oil cooler 52 is connected with cooling flow pressure-limit valve 51 with filter-press 53, for cooling and fine filtering fluid.One-way valve 54 is connected in parallel on oil cooler 52 and filter-press 53, one-way valve 54 cracking pressure setting larger, therefore fluid flows through oil cooler 52 and filter-press 53 under normal circumstances, only when oil cooler 52 and filter-press 53 exist such as block, fluid just flows through from one-way valve 54 bypass.Fluid, through supercooling with after filtering, can distribute to and need the element of lubrication to carry out lubrication use, and unnecessary fluid can be back to fuel tank 22 by large flux control valve 56 via control valve for small flows 55.When the fluid needed for lubricating is large discharge, large flux control valve 56 can be opened by second switch solenoid valve 57, second switch solenoid valve 57 has pressure introduction port and pressure output, the pressure introduction port of second switch solenoid valve 57 is connected with the pressure output of solenoid pressure regulator 34, the pressure output of second switch solenoid valve 57 is connected with the control end of large flux control valve 56, therefore can promote large flux control valve 56 by second switch solenoid valve 57 to commutate, to open large flux control valve 56.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a shifting control system for automatic transmission, comprise main pump (11) and four shift cylinders (41,42,43,44), it is characterized in that, this shifting control system also comprises:
Gearshift control valve (12), this gearshift control valve (12) has pressure introduction port (121) and two pressure outputs (122, 123), this gearshift control valve (12) can switch between the first working position and the second working position, when this gearshift control valve (12) is in the first working position, this pressure introduction port (121) and these two pressure outputs (122, 123) one of them in is communicated with, when this gearshift control valve (12) is in the second working position, this pressure introduction port (121) and these two pressure outputs (122, 123) wherein another connection in,
First gear switching valve (13), this the first gear switching valve (13) has two pressure introduction port (131, 132) and four pressure outputs (133, 134, 135, 136), this the first gear switching valve (13) can switch between the first working position and the second working position, when this first gear switching valve (13) is in the first working position, two pressure introduction port (131 of this first gear switching valve (13), 132) respectively with four pressure outputs (133 of this first gear switching valve (13), 134, 135, 136) wherein two pressure outputs in are communicated with, when this first gear switching valve (13) is in the second working position, two pressure introduction port (131 of this first gear switching valve (13), 132) respectively with four pressure outputs (133 of this first gear switching valve (13), 134, 135, 136) two other pressure output in is communicated with,
Second gear switching valve (14), this the second gear switching valve (14) has two pressure introduction port (141, 142) and four pressure outputs (143, 144, 145, 146), this the second gear switching valve (14) can switch between the first working position and the second working position, when this second gear switching valve (14) is in the first working position, two pressure introduction port (141 of this second gear switching valve (14), 142) respectively with four pressure outputs (143 of this second gear switching valve (14), 144, 145, 146) wherein two pressure outputs in are communicated with, when this second gear switching valve (14) is in the second working position, two pressure introduction port (141 of this second gear switching valve (14), 142) respectively with four pressure outputs (143 of this second gear switching valve (14), 144, 145, 146) two other pressure output in is communicated with,
First gear bit switch valve (15), this first gear bit switch valve (15) is connected between this first gear switching valve (13) and this gearshift control valve (12), this first gear bit switch valve (15) can switch between a closed position and a open position, when this first gear bit switch valve (15) is in the closed position, two pressure outputs (122 of this gearshift control valve (12), 123) respectively with two pressure introduction port (131 of this first gear switching valve (13), 132) disconnect, when this first gear bit switch valve (15) is in an open position, two pressure outputs (122 of this gearshift control valve (12), 123) respectively with two pressure introduction port (131 of this first gear switching valve (13), 132) be communicated with, and
Second gear bit switch valve (16), this second gear bit switch valve (16) is connected between this second gear switching valve (14) and this gearshift control valve (12), this second gear bit switch valve (16) can switch between a closed position and a open position, when this second gear bit switch valve (16) is in the closed position, two pressure outputs (122 of this gearshift control valve (12), 123) respectively with two pressure introduction port (141 of this second gear switching valve (14), 142) disconnect, when this second gear bit switch valve (16) is in an open position, two pressure outputs (122 of this gearshift control valve (12), 123) respectively with two pressure introduction port (141 of this second gear switching valve (14), 142) be communicated with,
Wherein, wherein two shift cylinders in four pressure outputs (133,134,135,136) and this four shift cylinders (41,42,43,44) of this first gear switching valve (13) are connected, and two other shift cylinder in four pressure outputs (143,144,145,146) and this four shift cylinders (41,42,43,44) of this second gear switching valve (14) is connected.
2. the shifting control system of automatic transmission as claimed in claim 1, is characterized in that: the solenoid directional control valve that this gearshift control valve (12), this first gear switching valve (13), this second gear switching valve (14), this first gear bit switch valve (15) and this second gear bit switch valve (16) are sliding valve style.
3. the shifting control system of automatic transmission as claimed in claim 1, it is characterized in that: the hydraulic control proportional reversing valve that this gearshift control valve (12) is sliding valve style, this shifting control system also comprises gearshift pressure solenoid valve (26), the pressure output of this gearshift pressure solenoid valve (26) is connected with the control end of this gearshift control valve (12), and pressure feedback is also acted on the two ends of this gearshift control valve (12) by two pressure outputs (122,123) of this gearshift control valve (12) respectively.
4. the shifting control system of automatic transmission as claimed in claim 3, it is characterized in that: this shifting control system also comprises solenoid pressure regulator (34), the proportional pressure-reducing valve that this solenoid pressure regulator (34) is sliding valve style, this solenoid pressure regulator (34) has pressure introduction port (341) and pressure output (342), the pressure introduction port (341) of this solenoid pressure regulator (34) is connected with the delivery outlet of this main pump (11), the pressure output (342) of this solenoid pressure regulator (34) is connected with the pressure introduction port of this gearshift pressure solenoid valve (26).
5. the shifting control system of automatic transmission as claimed in claim 1, it is characterized in that: the pilot operated directional control valve that this first gear switching valve (13) and this second gear switching valve (14) are sliding valve style, the two ends of this first gear switching valve (13) have the first control end (137) and the second control end (138) respectively, the two ends of this second gear switching valve (14) have the first control end (147) and the second control end (148) respectively, first control end (137) of this first gear switching valve (13) is connected with first control end (147) of this second gear switching valve (14) and is connected to an oil circuit control, second control end (138) of this first gear switching valve (13) is connected with second control end (148) of this second gear switching valve (14) and is connected to another oil circuit control.
6. the shifting control system of automatic transmission as claimed in claim 5, it is characterized in that: this shifting control system also comprises odd even selector valve (17), this odd even selector valve (17) has pressure introduction port (171), first pressure output (172) and the second pressure output (173), first pressure output (172) of this odd even selector valve (17) is connected with first control end (147) of first control end (137) of this first gear switching valve (13) and this second gear switching valve (14), second pressure output (173) of this odd even selector valve (17) is connected with second control end (148) of second control end (138) of this first gear switching valve (13) and this second gear switching valve (14), this odd even selector valve (17) can switch between the first working position and the second working position, when this odd even selector valve (17) is in the first working position, the pressure introduction port (171) of this odd even selector valve (17) is communicated with first pressure output (172) of this odd even selector valve (17), when this odd even selector valve (17) is in the second working position, the pressure introduction port (171) of this odd even selector valve (17) is communicated with second pressure output (173) of this odd even selector valve (17).
7. the shifting control system of automatic transmission as claimed in claim 6, it is characterized in that: the pilot operated directional control valve that this odd even selector valve (17) is sliding valve style, the two ends of this odd even selector valve (17) have the first control end (175) and the second control end (176) respectively, this shifting control system also comprises first clutch solenoid valve (18) and second clutch solenoid valve (19), this first clutch solenoid valve (18) is for controlling the joint of first clutch, this second clutch solenoid valve (19) is for controlling the joint of second clutch, this first clutch solenoid valve (18) has pressure introduction port (181) and pressure output (182), the pressure output (182) of this first clutch solenoid valve (18) is connected with first control end (175) of this odd even selector valve (17), this second clutch solenoid valve (19) has pressure introduction port (191) and pressure output (192), the pressure output (192) of this second clutch solenoid valve (19) is connected with second control end (176) of this odd even selector valve (17).
8. the shifting control system of automatic transmission as claimed in claim 1, it is characterized in that: the pilot operated directional control valve that this first gear bit switch valve (15) and this second gear bit switch valve (16) are sliding valve style, this first gear bit switch valve (15) comprises opening end (151) and shutdown side (152), this second gear bit switch valve (16) also comprises opening end (161) and shutdown side (162), this shifting control system also comprises the first gear solenoid valve (27) and the second gear solenoid valve (28), the pilot pressure that this first gear solenoid valve (27) exports acts on the opening end (151) of this first gear bit switch valve (15) and the shutdown side (162) of this second gear bit switch valve (16), the pilot pressure that this second gear solenoid valve (28) exports acts on the shutdown side (152) of this first gear bit switch valve (15) and the opening end (161) of this second gear bit switch valve (16).
9. the shifting control system of automatic transmission as claimed in claim 1, it is characterized in that: four pressure outputs (133 of this first gear switching valve (13), 134, 135, 136) the first pressure output (133) is comprised, second pressure output (134), 3rd pressure output (135) and the 4th pressure output (136), when this first gear switching valve (13) is in the first working position, two pressure introduction port (131 of this first gear switching valve (13), 132) be communicated with the 3rd pressure output (135) with first pressure output (133) of this first gear switching valve (13) respectively, when this first gear switching valve (13) is in the second working position, two pressure introduction port (131 of this first gear switching valve (13), 132) be communicated with the 4th pressure output (136) with second pressure output (134) of this first gear switching valve (13) respectively, four pressure outputs (143 of this second gear switching valve (14), 144, 145, 146) the first pressure output (143) is comprised, second pressure output (144), 3rd pressure output (145) and the 4th pressure output (146), when this second gear switching valve (14) is in the first working position, two pressure introduction port (141 of this second gear switching valve (14), 142) be communicated with the 3rd pressure output (145) with first pressure output (143) of this second gear switching valve (14) respectively, when this second gear switching valve (14) is in the second working position, two pressure introduction port (141 of this second gear switching valve (14), 142) be communicated with the 4th pressure output (146) with second pressure output (144) of this second gear switching valve (14) respectively.
10. the shifting control system of automatic transmission as claimed in claim 9, it is characterized in that: these four shift cylinders (41,42,43,44) the first shift cylinder (41) is comprised, second shift cylinder (42), 3rd shift cylinder (43) and the 4th shift cylinder (44), first pressure output (133) of this first gear switching valve (13) and the 3rd pressure output (135) are connected to the two ends of this first shift cylinder (41) respectively, second pressure output (134) of this first gear switching valve (13) and the 4th pressure output (136) are connected to the two ends of this second shift cylinder (42) respectively, first pressure output (143) of this second gear switching valve (14) and the 3rd pressure output (145) are connected to the two ends of the 3rd shift cylinder (43) respectively, second pressure output (144) of this second gear switching valve (14) and the 4th pressure output (146) are connected to the two ends of the 4th shift cylinder (44) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420692010.1U CN204312690U (en) | 2014-11-18 | 2014-11-18 | The shifting control system of automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420692010.1U CN204312690U (en) | 2014-11-18 | 2014-11-18 | The shifting control system of automatic transmission |
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|---|---|
| CN204312690U true CN204312690U (en) | 2015-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420692010.1U Withdrawn - After Issue CN204312690U (en) | 2014-11-18 | 2014-11-18 | The shifting control system of automatic transmission |
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| CN (1) | CN204312690U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020391A (en) * | 2015-07-27 | 2015-11-04 | 安徽江淮汽车股份有限公司 | Gear hydraulic control system for gearbox |
| WO2016078512A1 (en) * | 2014-11-18 | 2016-05-26 | 广州汽车集团股份有限公司 | Gear-shifting control system of automatic transmission |
| CN105673836A (en) * | 2014-11-18 | 2016-06-15 | 广州汽车集团股份有限公司 | Gear shifting control system for automatic speed changer |
-
2014
- 2014-11-18 CN CN201420692010.1U patent/CN204312690U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016078512A1 (en) * | 2014-11-18 | 2016-05-26 | 广州汽车集团股份有限公司 | Gear-shifting control system of automatic transmission |
| CN105673836A (en) * | 2014-11-18 | 2016-06-15 | 广州汽车集团股份有限公司 | Gear shifting control system for automatic speed changer |
| CN105673836B (en) * | 2014-11-18 | 2017-11-24 | 广州汽车集团股份有限公司 | The shifting control system of automatic transmission |
| US10571017B2 (en) | 2014-11-18 | 2020-02-25 | Guangzhou Automobile Group Co., Ltd. | Gear-shifting control system of automatic transmission |
| CN105020391A (en) * | 2015-07-27 | 2015-11-04 | 安徽江淮汽车股份有限公司 | Gear hydraulic control system for gearbox |
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