CN203283218U - Relay valve control device and air braking system in hill starting process - Google Patents
Relay valve control device and air braking system in hill starting process Download PDFInfo
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- CN203283218U CN203283218U CN201320264248XU CN201320264248U CN203283218U CN 203283218 U CN203283218 U CN 203283218U CN 201320264248X U CN201320264248X U CN 201320264248XU CN 201320264248 U CN201320264248 U CN 201320264248U CN 203283218 U CN203283218 U CN 203283218U
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Abstract
The utility model discloses a relay valve control device and an air braking system in a hill starting process. The control device comprises a first sensor, a second sensor and a switch valve, wherein the first sensor is used for detecting clutch pedal positions, the second sensor is used for detecting vehicle speeds, and the switch valve is used for inputting high-pressure control air to a control air inlet of a relay valve. The switch valve is provided with an air inlet, an air outlet and a controller, wherein the air outlet is used for being communicated with the control air inlet of the relay valve, the controller is used for judging vehicle states according to information collected by the two sensors and outputting corresponding control signals to the switch valve to control the air inlet and the air outlet of the switch valve to be communicated so as to input the high-pressure air to the control air inlet of the relay valve, and to control the air inlet and the air outlet of the switch valve to be disconnected to stop inputting the high-pressure air to the control air inlet of the relay valve. A signal output portion of the first sensor and a signal output portion of the second sensor are connected with a signal input portion of the controller, and a signal output portion of the controller is connected with a signal input portion of the switch valve. The control device is simple and reliable, and low in demand on controller performance.
Description
Technical field
The utility model belongs to automobile control technology field, is specifically related to a kind of being applied on automobile with driver assistance and carries out in the process of uphill starting the Pneumatic braking system of controlling the control setup of relay valve action and using this control setup.
Background technology
the passenger vehicle that present load carrying ability is larger and lorry adopt Pneumatic braking system to brake more, the structure of Pneumatic braking system as Granted publication number be disclosed in CN202320266U, mainly comprise air receiver, brake activation valve, relay valve and compressed air brake cylinder, this brake activation valve is for controlling the control setup of relay valve action, brake activation valve has the admission port that is communicated with air receiver and is used for controlling to relay valve output the air extractor duct of gas, relay valve has admission port, control the gas import, air extractor duct and the exhausr port that is communicated with atmosphere, the admission port of relay valve is communicated with air receiver, the control gas import of relay valve is communicated with the air extractor duct of brake activation valve, the air extractor duct of brake activation valve is communicated with the admission port of compressed air brake cylinder.When vehicle is braked, control the brake activation valve conducting, at this moment, high pressure gas in air receiver enters through the control gas import of relay valve, make admission port and the air extractor duct conducting of relay valve, high pressure gas in air receiver enters in compressed air brake cylinder through admission port, the air extractor duct of relay valve like this, completes the braking to vehicle.When the needs brake off, air extractor duct is communicated with exhausr port, the high pressure gas in compressed air brake cylinder is through air extractor duct, exhausr port discharged to atmosphere, and braking is removed.
The driver when driving, often can run into vehicle and need to suspend operating mode in ramp, at this moment, needs the pull-up parking brake to guarantee the braking during standstill to vehicle.While starting to walk on ramp, the driver must skillfully grasp the sequence of operations steps such as pedal of clutch, Das Gaspedal and parking brake, namely elder generation, partly in conjunction with power-transfer clutch, then removes the parking brake braking during standstill when being about to start to walk when strengthening engine throttle, could start to walk smoothly.This method for starting requires the driver experienced, and operant level is high,, if the groove group slightly has error, engine off or vehicle anti-slide just may occur the dangerous working condition such as retreat.
Many hill-start control devices of installing on passenger vehicle or lorry carry out the uphill starting operation with auxiliary driver at present, as at Granted publication number, in the Chinese utility model patent of CN202106961U, disclosing a kind of hill-start control device, hill-start control device herein is applied on above-mentioned Equations of The Second Kind Pneumatic braking system.Hill-start control device comprises the finished vehicle electronic controller, parking brake and uphill starting electromagnetic valve, the uphill starting electromagnetic valve has the admission port that the air extractor duct for the air receiver with Pneumatic braking system is communicated with and is used for the air extractor duct that is communicated with the admission port of spring air chamber, and on the finished vehicle electronic controller, circuit is connected with driving engine, change speed gear box and uphill starting switch.the uphill starting switch is controlled whole hill-start control device, when needs are started to walk on ramp, the driver presses the uphill starting switch, and make change speed gear box be in suitable gear, then put down parking brake, air receiver can be inputted high pressure gas to Pneumatic braking system, high pressure gas will arrive the uphill starting electromagnetic valve of being controlled conducting by the finished vehicle electronic controller, the not yet conducting of uphill starting electromagnetic valve this moment, subsequently, the driver will step on the throttle pedal to increase the moment of torsion of driving engine, when the moment of torsion of driving engine reaches the setting value of removing braking during standstill, the finished vehicle electronic controller is controlled the uphill starting electromagnetic valve again and is inflated to spring air chamber, at this moment, brake application by spring power in spring air chamber is removed gradually, the braking mode of vehicle is also progressively removed, after whole releasings, vehicle is realized uphill starting.
Above-mentioned hill-start control device is mainly realized the non-productive operation of hill start starting by the action of controlling relay valve, but the finished vehicle electronic controller in above-mentioned hill-start control device not only needs to detect the concrete numerical value of the multinomial state of vehicle, also need to preset the algorithm of more complicated in the finished vehicle electronic controller in addition, just the performance requriements to the finished vehicle electronic controller is higher for this, has additionally increased the use cost of hill-start control device.
The utility model content
The purpose of this utility model is to provide servo control valve device in a kind of uphill starting process, to solve in prior art, controls the required higher technical matters of control setup cost of relay valve action in the uphill starting process; Simultaneously, also provide a kind of Pneumatic braking system that uses this control setup.
for achieving the above object, in uphill starting process provided by the utility model, the technical scheme of servo control valve device is: comprise the first sensor for detection of the clutch pedal position, for detection of the second sensor of the speed of a motor vehicle be used for to the switch valve of the control gas import input high pressure control gas of the relay valve of Pneumatic braking system, switch valve has for the admission port that is communicated with high-pressure air source and is used for the air extractor duct that is communicated with the control gas import of the relay valve of Pneumatic braking system, described control setup also comprises for the information judgement vehicle-state that collects according to two sensors and to switch valve exports corresponding control signal and then master cock valve admission port and air extractor duct conducting with the input of the control gas import to relay valve high pressure control gas, switch valve admission port and air extractor duct disconnect stopping inputting to the control gas import of relay valve the controller of high pressure control gas, wherein, first sensor be connected the signal efferent of sensor and be connected with the signal input part of controller, the signal efferent of controller is connected with the signal input part of switch valve.
Be serially connected with hand control switch between described controller and switch valve.
Described switch valve is normally closed solenoid valve, hill-start control device also comprises double-way check valve, the air extractor duct that double-way check valve has the first admission port of being communicated with the air extractor duct of normally closed solenoid valve, be used for the second admission port that is communicated with the air extractor duct of the brake activation valve of Pneumatic braking system and for the control gas import of the relay valve with Pneumatic braking system, be communicated with.
Described normally closed solenoid valve is provided with the exhausr port that is communicated with for the air extractor duct of normally closed solenoid valve.
the technical scheme of Pneumatic braking system provided by the utility model is: Pneumatic braking system, comprise relay valve, relay valve has for the control gas import to relay valve input high pressure control gas, Pneumatic braking system also comprises servo control valve device in the uphill starting process, it is characterized in that: described control setup comprises the first sensor for detection of the clutch pedal position, for detection of the second sensor of the speed of a motor vehicle be used for to the switch valve of the control gas import input high pressure control gas of the relay valve of Pneumatic braking system, switch valve has admission port and is used for the air extractor duct that is communicated with the control gas import of the relay valve of Pneumatic braking system, described control setup also comprises for the high-pressure air source that is communicated with the admission port of switch valve and is used for the information that collects according to two sensors judgement vehicle-state and to switch valve, exports corresponding control signal and then master cock valve admission port and air extractor duct conducting with the input of the control gas import to relay valve high pressure control gas, switch valve admission port and air extractor duct disconnect stopping inputting to the control gas import of relay valve the controller of high pressure control gas, wherein, first sensor be connected the signal efferent of sensor and be connected with the signal input part of controller, the signal efferent of controller is connected with the signal input part of switch valve.
Be serially connected with hand control switch between described controller and switch valve port.
Described Pneumatic braking system also comprises brake activation valve, brake activation valve has the high pressure admission mouth and is used for to the air extractor duct of relay valve output high pressure control gas, described switch valve is normally closed solenoid valve, hill-start control device also comprises double-way check valve, the air extractor duct that double-way check valve has the first admission port that is communicated with the air extractor duct of normally closed solenoid valve, the second admission port that is communicated with the air extractor duct of described brake activation valve and with the control gas import of described relay valve, is communicated with.
Described normally closed solenoid valve is provided with the exhausr port that is communicated with for the air extractor duct of normally closed solenoid valve.
The beneficial effects of the utility model are: when hill-start control device provided by the utility model used, when the driver was parked in vehicle on ramp, this moment, the speed of a motor vehicle was 0.When the driver need to start to walk on ramp, at first step on clutch pedal to extreme lower position, judge that vehicle is in anti-slip braking mode this moment, the instantaneous gas of control to relay valve import input high pressure control gas, according to the relay valve self-characteristic, the admission port of relay valve and air extractor duct conducting, high pressure gas enters in compressed air brake cylinder the braking that realizes vehicle,, even unclamp the vehicle parking brake this moment, the pedal that do not touch on the brake, can slip car to prevent to car brakeing equally.Then driver's engage a gear, and start to unclamp clutch pedal, this moment, clutch pedal no longer was in extreme lower position, judge that vehicle is in the braking disarm state, due to vehicle herein by braking mode to the switching of braking disarm state, at this moment, stop inputting high pressure control gas to the control gas import of relay valve after setting-up time with postponing, at this moment, according to the relay valve self-characteristic, the admission port of relay valve and air extractor duct disconnect, and the air extractor duct of relay valve and exhausr port conducting are drained with the high pressure gas with in compressed air brake cylinder, and this moment, braking was removed.And in the delay time of setting, still to the control gas import input high pressure control gas of relay valve, vehicle will be braked and not there will be the situation of car of slipping backward this moment.The driver continues to unclamp clutch pedal and steps on Das Gaspedal, and the anti-slip braking of freeing vehicle after postponing setting-up time realizes that vehicle normally starts to walk.In the normal vehicle operation process, the speed of a motor vehicle is not 0, to judge that vehicle is anti-slip braking disarm state this moment, and in the normal vehicle operation process, the speed of a motor vehicle is not 0 all the time, carry out gear shift operation even step on clutch pedal, vehicle also is in anti-slip braking disarm state all the time, can normally not travelling and impacting vehicle.In uphill starting process provided by the utility model, the relay valve control method only needs to detect whether clutch pedal is in extreme lower position and whether the speed of a motor vehicle is 0, detect simple and convenient, and control method is simple, and is lower to the performance requriements of the control setup for implementing this control method.In uphill starting process provided by the utility model, the servo control valve device is simple in structure, also just lower to the performance requriements of controller, can lower the manufacturing cost of control setup.
servo control valve device in above-mentioned uphill starting process is installed in Pneumatic braking system provided by the utility model, when the driver carries out uphill starting, in the uphill starting process, the servo control valve device is started working, vehicle will be in anti-slip braking mode at the beginning, when by anti-slip braking mode, to anti-slip braking disarm state, being switched, the admission port of switch valve and air extractor duct postpone just to disconnect after setting-up time, before admission port and air extractor duct disconnection, the effect that vehicle will still be subject to braking force not there will be the problem of car of slipping backward, so, the driver can be calm in setting-up time loose clutch pedal, accelerator pedal and then realize normal uphill starting.
Description of drawings
Fig. 1 is that in uphill starting process provided by the utility model, the servo control valve device is applied in schematic diagram on Pneumatic braking system;
Fig. 2 is AND circuit input-output characteristic block diagram in Fig. 1;
Fig. 3 is delay timer input-output wave shape figure in Fig. 1;
Fig. 4 is the schematic diagram of a kind of embodiment of Pneumatic braking system provided by the utility model.
The specific embodiment
a kind of uphill starting control method, gather clutch pedal position signal and vehicle speed signal, only when being in extreme lower position and the speed of a motor vehicle and being 0, clutch pedal judges that vehicle is in anti-slip braking mode, when no longer being in extreme lower position and/or the speed of a motor vehicle and being not 0, clutch pedal judges that vehicle is in anti-slip braking disarm state, when vehicle is in anti-slip braking mode, the instantaneous gas of control to relay valve import input high pressure control gas, the anti-slip braking of realization to vehicle, when vehicle is in anti-slip braking disarm state, stop the control gas import input high pressure control gas to relay valve, the anti-slip braking of releasing to vehicle, when vehicle is switched to anti-slip braking disarm state by anti-slip braking mode, postpone to stop inputting high pressure control gas to the control gas import of relay valve after setting-up time, the anti-slip braking of releasing to vehicle.
as shown in Figure 1 to Figure 3, a kind of embodiment of the uphill starting process servo control valve device for implementing said method, in uphill starting process in this embodiment, the servo control valve device comprises the first sensor for detection of the clutch pedal position, for detection of the second sensor of the speed of a motor vehicle be used for to the switch valve of the control gas import input high pressure control gas of the relay valve of Pneumatic braking system, switch valve herein is normally closed solenoid valve 9, normally closed solenoid valve 9 has the admission port 91 that is communicated with for the auxiliary air receiver 2 with as high-pressure air source, be used for the air extractor duct 92 that is communicated with the control gas import 42 of the relay valve 4 of Pneumatic braking system and for the exhausr port 93 that is communicated with the air extractor duct 92 of normally closed solenoid valve 9.control setup also comprises for the information judgement vehicle-state that collects according to two sensors and to switch valve exports corresponding control signal and then master cock valve admission port and air extractor duct conducting with the input of the control gas import to relay valve high pressure control gas, switch valve admission port and air extractor duct disconnect stopping inputting to the control gas import of relay valve the controller of high pressure control gas, controller herein comprises AND circuit 7 and delay timer 8, AND circuit 7 has two input ends and a mouth, delay timer 8 has the input end that is electrically connected to the mouth of AND circuit and is used for signal output part with the normally closed solenoid valve control linkage.Two input ends of AND circuit 7 are respectively the first input end 71 corresponding with the testing result of first sensor and second input end 72 corresponding with the testing result of the second sensor.Specifically, when first sensor detects pedal and is in extreme lower position, first input end 71 input high levels 1 of AND circuit, when first sensor detects pedal and no longer is in extreme lower position, first input end 71 input low levels 0 of AND circuit.Same, when the second sensor detects the speed of a motor vehicle and is 0, second place's input end 72 input high levels 1 of AND circuit, and when the speed of a motor vehicle is not 0, the second input end input low level 0 of AND circuit 7.According to the input-output characteristic figure of as shown in Figure 2 AND circuit as can be known, only have when two input ends simultaneously during input high level 1, the mouth of AND circuit 7 will be exported high level 1, as long as and when first input end 71, when the second input end 72 has an input low level 0, the mouth of AND circuit 7 is with output low level 0.And the operating characteristic of delay timer 8 herein is also more special, when the input end of delay timer 8 becomes high level 1 by low level, the mouth of delay timer 8 will become high level 1 at once, and when the level of the input end of delay timer 8 becomes low level 0 by high level 1, mouth will become at 1 second low level 0 later.for normally closed solenoid valve 4, when the mouth of delay timer 8 is exported high level 1, the admission port 91 of normally closed solenoid valve 9 and the instantaneous connection of air extractor duct 92, when the mouth of delay timer 8 becomes low level 0, admission port 91 and the air extractor duct 92 of normally closed solenoid valve 9 will disconnect, and make air extractor duct 92 and exhausr port 93 conductings of normally closed solenoid valve, and when the level of the input end of delay timer becomes low level 0 by high level 1, because mouth will become at 1 second low level 0 later, accordingly, the admission port of the normally closed solenoid valve that is controlled by the controller and air extractor duct also will disconnect afterwards at 1 second, then the air extractor duct of normally closed solenoid valve and exhausr port conducting.
Hill-start control device in the present embodiment also comprises the hand control switch by driver operation 10 that is located between controller and normally closed solenoid valve 9.Press hand control switch, the auxiliary control of uphill starting started working.
Hill-start control device in the present embodiment also comprises double-way check valve 5, and double-way check valve has the air extractor duct 53 that double-way check valve has the first admission port 52 that is communicated with the air extractor duct of normally closed solenoid valve, the second admission port 51 that is communicated with the air extractor duct of described brake activation valve 3 and with the control gas import 42 of described relay valve 4, is communicated with.
Controller in above-described embodiment comprises AND circuit 7 and delay timer 8, in other embodiments, controller also can adopt of the prior art with the control module with door calculation function and delay function, as long as can meet the requirement of above-mentioned uphill starting auxiliary control method.
In above-described embodiment, switch valve in hill-start control device is normally closed solenoid valve, in other embodiments, also can adopt general two-position three-way valve, two-position three-way valve can be the electromagnetic valve by electromagnetic control, also can be for the change-over valve of being controlled by hydraulic power or Pneumatic pressure power, as long as can receive the control signal that controller sends.
In above-described embodiment, normally closed solenoid valve is provided with exhausr port, can directly control like this air extractor duct and the exhausr port conducting of normally closed solenoid valve, and is emptying with the braking of the high pressure in the compressed air brake cylinder with in Pneumatic braking system gas, and then brake off.In other embodiments, this normally closed solenoid valve also can not arrange exhausr port, at this moment, can put soon relay valve for what have the exhausr port put soon at relay valve, make air extractor duct and the exhausr port conducting of relay valve, the high pressure braking gas in equally can the fast evacuation compressed air brake cylinder.
as shown in Figure 4, a kind of embodiment of Pneumatic braking system, Pneumatic braking system in this embodiment comprises main air reservoir 1, auxiliary air receiver 2, brake activation valve 3, relay valve 4, compressed air brake cylinder 6 and hill-start control device, an air extractor duct of main air reservoir 1 is communicated with the admission port of brake activation valve 3, the air extractor duct of brake activation valve 3 is communicated with the control gas import of relay valve 4 by the double-way check valve 5 in hill-start control device, another air extractor duct of main air reservoir 1 directly is communicated with the admission port 43 of relay valve 4, the air extractor duct of relay valve 4 is communicated with compressed air brake cylinder 6, structure structure as shown in Fig. 1 to 3 that uphill starting is herein controlled control setup is identical, do not repeat them here, while specifically arranging, the admission port of normally closed solenoid valve 9 is communicated with the air extractor duct of auxiliary air receiver as high-pressure air source, and the second admission port of double-way check valve is communicated with the air extractor duct of brake activation valve, the air extractor duct of double-way check valve is communicated with the control gas import of relay valve.
During Pneumatic braking system work, when the driver steps on brake pedal, brake activation valve 3 conductings, high pressure draft is to the second admission port of double-way check valve 5 because the pressure of the first admission port of the double-way check valve 5 of this moment is lower than the pressure at the second admission port place, this moment the second admission port 51 will with air extractor duct 53 conductings of double-way check valve, high pressure control gas will enter in relay valve 4, the admission port of relay valve and air extractor duct conducting, high pressure gas enters in compressed air brake cylinder through relay valve, realizes conventional brake.
when the driver is parked in vehicle on ramp, hand control switch 10 closures, this moment, the speed of a motor vehicle was 0, it is 0 that the second sensor detects the speed of a motor vehicle, the second input end 72 input high levels 1 of AND circuit, the driver starts starting, step on clutch pedal, when first sensor detects clutch pedal and is in extreme lower position, first input end 71 input high levels 1 of AND circuit, at this moment, the mouth output high level 1 of AND circuit 7, when the input end of delay timer 8 becomes high level 1 by low level 0, the mouth of delay timer 8 will become high level 1 at once, the instantaneous conducting of the admission port of normally closed solenoid valve 9 and air extractor duct, high pressure control gas enters in double-way check valve 5 through the first admission port 52 of double-way check valve, because the second admission port of double-way check valve is higher than the pressure of the first admission port, at this moment, the second admission port of double-way check valve 5 will be communicated with the control gas import of relay valve 4, thereby make relay valve 4 work, vehicle is braked.At this moment, even unclamp parking brake, do not step on brake pedal, vehicle is braked.then driver's engage a gear, start loose clutch pedal, first sensor detects clutch pedal and leaves extreme lower position, the first input end 71 of AND circuit is with input low level 0, at this moment, the mouth of AND circuit is with output low level 0, the level of the input end of delay timer becomes low level 0 by high level 1, delay timer will send control signal and make admission port and the air extractor duct time delay disconnection in 1 second of normally closed solenoid valve at this moment, and make air extractor duct and the exhausr port conducting of normally closed solenoid valve 9, normally closed solenoid valve 9 exhausts, pressure no longer bears in the control gas inflow point of relay valve 4, the air extractor duct of relay valve and admission port disconnect, and the air extractor duct of relay valve will be with the exhausr port conducting of relay valve with the high pressure gas in emptying compressed air brake cylinder.And then releasing is to the braking of vehicle.And within the 1 second time that postpones, the driver continues to unclamp clutch pedal, and clutch pedal is delivered to the semi-linkage position, because braking not yet removes, this moment, vehicle not there will be the situation of car of slipping backward, and driver's stepping on accelerator pedal, loose clutch, can realize normal starting.In the normal vehicle operation process, the speed of a motor vehicle is not 0 all the time, even step on clutch pedal, carries out gear shift operation, and vehicle also is in the braking disarm state all the time, can normally not travelling and impacting vehicle.
In the present embodiment, be provided with main air reservoir and auxiliary air receiver in Pneumatic braking system, can make the pressure of assisting in air receiver greater than main air reservoir, so that realize the commutation conducting of double-way check valve.In other embodiments, also can directly be connected to the admission port of normally closed solenoid valve on main air reservoir, at this moment, for the pressure at the first admission port place of the guaranteeing double-way check valve pressure of locating greater than the second admission port, can be at main air reservoir to setting up force (forcing) pump between normally closed solenoid valve or between normally closed solenoid valve and double-way check valve to improve gaseous tension.
In the present embodiment, control setup can utilize the relay valve in existing Pneumatic braking system, in other embodiments, also can arrange separately a relay valve is set again, this relay valve has for the admission port that is communicated with high-pressure air source, the air extractor duct that is communicated with compressed air brake cylinder and the direct control gas import that is communicated with the air extractor duct of normally closed solenoid valve, and can save double-way check valve this moment.
In the present embodiment, switch valve is the special normally closed solenoid valve that arranges, in other embodiments, switch valve also can be the brake activation valve in existing Pneumatic braking system, just higher to the performance requriements of brake activation valve, need to have the requirement of conventional brake institute, also want and can control it by controller.
Claims (8)
1. servo control valve device in the uphill starting process, it is characterized in that: comprise the first sensor for detection of the clutch pedal position, for detection of the second sensor of the speed of a motor vehicle be used for to the switch valve of the control gas import input high pressure control gas of the relay valve of Pneumatic braking system, switch valve has for the admission port that is communicated with high-pressure air source and is used for the air extractor duct that is communicated with the control gas import of the relay valve of Pneumatic braking system, described control setup also comprises for the information judgement vehicle-state that collects according to two sensors and to switch valve exports corresponding control signal and then master cock valve admission port and air extractor duct conducting with the input of the control gas import to relay valve high pressure control gas, switch valve admission port and air extractor duct disconnect stopping inputting to the control gas import of relay valve the controller of high pressure control gas, wherein, first sensor be connected the signal efferent of sensor and be connected with the signal input part of controller, the signal efferent of controller is connected with the signal input part of switch valve.
2. servo control valve device in uphill starting process according to claim 1, is characterized in that: be serially connected with hand control switch between described controller and switch valve.
3. servo control valve device in uphill starting process according to claim 1 and 2, it is characterized in that: described switch valve is normally closed solenoid valve, hill-start control device also comprises double-way check valve, the air extractor duct that double-way check valve has the first admission port of being communicated with the air extractor duct of normally closed solenoid valve, be used for the second admission port that is communicated with the air extractor duct of the brake activation valve of Pneumatic braking system and for the control gas import of the relay valve with Pneumatic braking system, be communicated with.
4. servo control valve device in uphill starting process according to claim 3, it is characterized in that: described normally closed solenoid valve is provided with the exhausr port that is communicated with for the air extractor duct of normally closed solenoid valve.
5. Pneumatic braking system, comprise relay valve, relay valve has for the control gas import to relay valve input high pressure control gas, Pneumatic braking system also comprises servo control valve device in the uphill starting process, it is characterized in that: described control setup comprises the first sensor for detection of the clutch pedal position, for detection of the second sensor of the speed of a motor vehicle be used for to the switch valve of the control gas import input high pressure control gas of the relay valve of Pneumatic braking system, switch valve has admission port and is used for the air extractor duct that is communicated with the control gas import of the relay valve of Pneumatic braking system, described control setup also comprises for the high-pressure air source that is communicated with the admission port of switch valve and is used for the information that collects according to two sensors judgement vehicle-state and to switch valve, exports corresponding control signal and then master cock valve admission port and air extractor duct conducting with the input of the control gas import to relay valve high pressure control gas, switch valve admission port and air extractor duct disconnect stopping inputting to the control gas import of relay valve the controller of high pressure control gas, wherein, first sensor be connected the signal efferent of sensor and be connected with the signal input part of controller, the signal efferent of controller is connected with the signal input part of switch valve.
6. Pneumatic braking system according to claim 5, is characterized in that: be serially connected with hand control switch between described controller and switch valve port.
7. according to claim 5 or 6 described Pneumatic braking systems, it is characterized in that: described Pneumatic braking system also comprises brake activation valve, brake activation valve has the high pressure admission mouth and is used for to the air extractor duct of relay valve output high pressure control gas, described switch valve is normally closed solenoid valve, hill-start control device also comprises double-way check valve, the air extractor duct that double-way check valve has the first admission port that is communicated with the air extractor duct of normally closed solenoid valve, the second admission port that is communicated with the air extractor duct of described brake activation valve and with the control gas import of described relay valve, is communicated with.
8. Pneumatic braking system according to claim 7, it is characterized in that: described normally closed solenoid valve is provided with the exhausr port that is communicated with for the air extractor duct of normally closed solenoid valve.
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| CN201320264248XU CN203283218U (en) | 2013-05-15 | 2013-05-15 | Relay valve control device and air braking system in hill starting process |
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| CN201320264248XU CN203283218U (en) | 2013-05-15 | 2013-05-15 | Relay valve control device and air braking system in hill starting process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213575A (en) * | 2013-05-15 | 2013-07-24 | 郑州宇通客车股份有限公司 | Relay valve control method and device in hill starting process and air braking system |
| CN105313868A (en) * | 2015-11-03 | 2016-02-10 | 南京理工大学 | Service braking system based on intelligent hill-start assist |
| CN106121831A (en) * | 2016-08-02 | 2016-11-16 | 朱明德 | The throttle of a kind of vehicle, gear, exhaust brake combined control system |
| CN111572518A (en) * | 2020-04-29 | 2020-08-25 | 金龙联合汽车工业（苏州）有限公司 | Hill starting braking device applied to air brake vehicle type and starting method |
| CN114771480A (en) * | 2022-04-25 | 2022-07-22 | 一汽解放汽车有限公司 | Braking system and vehicle |
-
2013
- 2013-05-15 CN CN201320264248XU patent/CN203283218U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213575A (en) * | 2013-05-15 | 2013-07-24 | 郑州宇通客车股份有限公司 | Relay valve control method and device in hill starting process and air braking system |
| CN103213575B (en) * | 2013-05-15 | 2015-06-10 | 郑州宇通客车股份有限公司 | Relay valve control method and device in hill starting process and air braking system |
| CN105313868A (en) * | 2015-11-03 | 2016-02-10 | 南京理工大学 | Service braking system based on intelligent hill-start assist |
| CN106121831A (en) * | 2016-08-02 | 2016-11-16 | 朱明德 | The throttle of a kind of vehicle, gear, exhaust brake combined control system |
| CN106121831B (en) * | 2016-08-02 | 2018-10-26 | 江苏润杨汽车零部件制造有限公司 | A kind of throttle of vehicle, gear, exhaust brake combined control system |
| CN111572518A (en) * | 2020-04-29 | 2020-08-25 | 金龙联合汽车工业（苏州）有限公司 | Hill starting braking device applied to air brake vehicle type and starting method |
| CN114771480A (en) * | 2022-04-25 | 2022-07-22 | 一汽解放汽车有限公司 | Braking system and vehicle |
| CN114771480B (en) * | 2022-04-25 | 2024-02-23 | 一汽解放汽车有限公司 | Braking system and vehicle |
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