CN203441609U - Exhaust and brake butterfly valve control system - Google Patents
Exhaust and brake butterfly valve control system Download PDFInfo
- Publication number
- CN203441609U CN203441609U CN201320550042.3U CN201320550042U CN203441609U CN 203441609 U CN203441609 U CN 203441609U CN 201320550042 U CN201320550042 U CN 201320550042U CN 203441609 U CN203441609 U CN 203441609U
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- butterfly valve
- exhaust
- signal
- control system
- sensor
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The utility model belongs to the technical field of cargo truck control and relates to an exhaust and brake butterfly valve control system. The exhaust and brake butterfly valve control system comprises an automobile electronic control unit, an exhaust pipe, an air compression unit, a first sensor, a second sensor, a brake butterfly valve, an exhaust back pressure sensor, a hydraulic brake cylinder and a proportional valve, wherein the air compression unit is connected with the proportional valve, signals input by a signal input end of the automobile electronic control unit include an engine rotation speed signal, an automobile speed signal and a pressure signal collected by the exhaust back pressure sensor, and signals output by a signal output end of the automobile electronic control unit include an instruction signal and a feedback signal. Switching on and switching off of the proportional valve are determined by comparing the instantaneous value of the instruction signal and the instantaneous value of the feedback signal, and therefore the pressure and the flow of compressed air acting on the hydraulic brake cylinder can be controlled so that the angle of the brake butterfly valve can be controlled, and required brake power of an automobile is achieved. Besides, the exhaust and brake butterfly valve control system is reliable in design principle and simple in structure and has very extensive application prospects.
Description
Technical field
The utility model belongs to truck control technique field, relates to a kind of exhaust brake butterfly valve control system.
Background technique
The most of configuration of heavy truck motor auxiliary braking, realizes the control to automobile speed by closing exhaust butterfly valve, has reduced the frequency of utilization of foundation brakes.
At present, the braking of exhaust butterfly valve is when exhaust butterfly valve cuts out braking, exhaust back pressure increases, motor compresses the air in cylinder when compression and exhaust stroke, increase the exhaust resistance that piston bent axle bears, and by transmission system, decelerating effect is passed on driving wheel, to reach the object that reduces automobile speed.
The size of exhaust pressure directly affects the braking force of motor, and exhaust back pressure is larger, and braking force is higher; But along with the rising of rotating speed, exhaust back pressure is higher, exhaust valve there will be knock-on and the overheated situation of oil sprayer, affect the reliability of motor, and exhaust pressure is on the low side when the slow-speed of revolution, and enough large braking force can not be provided, and affects the effect of motor auxiliary braking.Therefore,, under the prerequisite of reliability that guarantees motor, braking butterfly valve will, according to the practical operation situation of automobile, provide stable exhaust pressure.
Model utility content
The purpose of this utility model is, for the technological deficiency existing in above-mentioned prior art, provides design a kind of exhaust brake butterfly valve control system.
The utility model is achieved through the following technical solutions:
A butterfly valve control system, comprising: vehicle electronic control unit and outlet pipe; It is characterized in that, also comprise: air compression plant, for gathering the first sensor of engine rotational speed signal, for gathering the second sensor of automobile speed, be arranged on the braking butterfly valve in described outlet pipe, be arranged on the exhaust back pressure sensor on outlet pipe, be connected with described braking butterfly valve and control the hydraulic braking cylinder of its unlatching, with the Proportional valve that described hydraulic braking cylinder is connected, described air compression plant is connected with described Proportional valve, in described control compression set, has pressurized air.
Preferably, described vehicle electronic control unit has signal input part and signal output part.
Preferably, described first sensor, the second sensor and exhaust back pressure sensor are all connected to the signal input part of described vehicle electronic control unit.
Preferably, described Proportional valve adopts electro-hydraulic proportional valve.
Preferably, described control butterfly valve is concentric butterfly valve.
Preferably, the central shaft of described control butterfly valve is rigid central axle.
The beneficial effects of the utility model are, by the command signal of signal output part output of vehicle electronic control unit and the break-make that relatively determines Proportional valve of the momentary value of feedback signal, the feedback signal that makes actual output changes with the change of command signal, pressure or the flow due to Proportional valve, exported are directly proportional to the electric current of input, therefore can compressed-air actuated pressure and the flow of control action on hydraulic braking cylinder, thereby control the angle of braking butterfly valve, realize the braking force that vehicle needs, exhaust valve knock-on or the overheated situation of oil sprayer of the excessive appearance of exhaust back pressure have been solved, and exhaust back pressure is too small and enough large braking force can not be provided, affect the problem of the effect of motor auxiliary braking, in addition, the utility model design principle is reliable, simple in structure, has application prospect very widely.
Accompanying drawing explanation
A kind of exhaust brake butterfly valve control system embodiment's 1 that Fig. 1 provides for the application structural representation.
Specific embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, following examples are to explanation of the present utility model, and the utility model is not restricted to following examples.
Fig. 1 shows a kind of exhaust brake butterfly valve control system embodiment's 1 that the application provides structural representation, comprising: air compression plant 1, hydraulic braking cylinder 4, braking butterfly valve 5, exhaust back pressure sensor 6, Proportional valve 7, first sensor 8, the second sensor 9, vehicle electronic control unit 10 and outlet pipe 2.
Described air compression plant 1 is connected with Proportional valve 7, and has pressurized air in air compression plant 1.
Described braking butterfly valve 5 is arranged in described outlet pipe 2, the dog point of described hydraulic braking cylinder 4 is connected with braking butterfly valve 5, the input end of described hydraulic braking cylinder 4 is connected with Proportional valve 7, and described exhaust back pressure sensor 6 is arranged on braking butterfly valve 5 away from one end of the outlet pipe 2 of the outlet pipe mouth of pipe 3.
The signal of the signal input part input of described vehicle electronic control unit 10 comprises the pressure signal that engine rotational speed signal that first sensor 8 collects, vehicle speed signal that the second sensor 9 collects and exhaust back pressure sensor 6 collect.
The signal of the signal output part output of described vehicle electronic control unit 10 comprises command signal and feedback signal.
Described command signal and feedback signal are the input signal of Proportional valve 7, and the pressurized air in air compression plant 1 is input to Proportional valve 7 according to the input signal of Proportional valve 7.
Wherein, vehicle electronic control unit 10 calculates according to the signal of its input end input, the current waveform of hope output is exported as command signal, actual current waveform is exported as feedback signal, Proportional valve 7 is by the break-make that relatively decides self of command signal and feedback signal momentary value, feedback signal is changed with the change of command signal, the compressed-air actuated flow of exporting due to Proportional valve 7 is directly proportional to the electric current of input, therefore can compressed-air actuated pressure and the flow of control action on hydraulic braking cylinder 4, thereby control the opening angle of braking butterfly valve 5, realize the braking force that vehicle needs.
In the present embodiment, Proportional valve 7 adopts electro-hydraulic proportional valve, described electro-hydraulic proportional valve is converted to mechanical force and displacement output continuously pari passu by the electrical signal of input, the pressure of output squeezing air and flow continuously in proportion after accepting this mechanical force and displacement, the control action power of realization on master cylinder 4, thus the opening angle of braking butterfly valve 5 controlled.
In the present embodiment, brake butterfly valve 5 for concentric butterfly valve, and the central shaft of braking butterfly valve 5 is rigid central axle, motor, when the different rotating speed braking of height, has obviously reduced the retardation phenomenon of braking butterfly valve 5.
Claims (6)
1. an exhaust brake butterfly valve control system, comprising: vehicle electronic control unit and outlet pipe; It is characterized in that, also comprise: air compression plant, for gathering the first sensor of engine rotational speed signal, for gathering the second sensor of automobile speed, be arranged on the braking butterfly valve in described outlet pipe, be arranged on the exhaust back pressure sensor on outlet pipe, be connected with described braking butterfly valve and control the hydraulic braking cylinder of its unlatching, with the Proportional valve that described hydraulic braking cylinder is connected, described air compression plant is connected with described Proportional valve, in described control compression set, has pressurized air.
2. exhaust brake butterfly valve control system according to claim 1, is characterized in that: described vehicle electronic control unit has signal input part and signal output part.
3. exhaust brake butterfly valve control system according to claim 2, is characterized in that: described first sensor, the second sensor and exhaust back pressure sensor are all connected to the signal input part of described vehicle electronic control unit.
4. according to the exhaust brake butterfly valve control system described in claims 1 to 3 any one claim, it is characterized in that: described Proportional valve adopts electro-hydraulic proportional valve.
5. exhaust brake butterfly valve control system according to claim 4, is characterized in that: described control butterfly valve is concentric butterfly valve.
6. exhaust brake butterfly valve control system according to claim 5, is characterized in that: the central shaft of described control butterfly valve is rigid central axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320550042.3U CN203441609U (en) | 2013-09-05 | 2013-09-05 | Exhaust and brake butterfly valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320550042.3U CN203441609U (en) | 2013-09-05 | 2013-09-05 | Exhaust and brake butterfly valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441609U true CN203441609U (en) | 2014-02-19 |
Family
ID=50092668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320550042.3U Expired - Lifetime CN203441609U (en) | 2013-09-05 | 2013-09-05 | Exhaust and brake butterfly valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441609U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356729A (en) * | 2018-11-08 | 2019-02-19 | 潍柴西港新能源动力有限公司 | A kind of exhaust brake butterfly valve control system and control method |
| CN113969843A (en) * | 2021-09-30 | 2022-01-25 | 东风商用车有限公司 | Exhaust brake system |
-
2013
- 2013-09-05 CN CN201320550042.3U patent/CN203441609U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356729A (en) * | 2018-11-08 | 2019-02-19 | 潍柴西港新能源动力有限公司 | A kind of exhaust brake butterfly valve control system and control method |
| CN109356729B (en) * | 2018-11-08 | 2024-02-09 | 潍柴西港新能源动力有限公司 | Exhaust brake butterfly valve control system and control method |
| CN113969843A (en) * | 2021-09-30 | 2022-01-25 | 东风商用车有限公司 | Exhaust brake system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140219 |
|
| CX01 | Expiry of patent term |