CN103244231B - Variable-pressure gas release braking method and variable-pressure gas release brake for implementing same - Google Patents
Variable-pressure gas release braking method and variable-pressure gas release brake for implementing same Download PDFInfo
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- CN103244231B CN103244231B CN201310159070.7A CN201310159070A CN103244231B CN 103244231 B CN103244231 B CN 103244231B CN 201310159070 A CN201310159070 A CN 201310159070A CN 103244231 B CN103244231 B CN 103244231B
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Abstract
The invention discloses a variable-pressure gas release braking method. The variable-pressure gas release braking method includes that a first cavity, a second cavity and a third cavity are sequentially arranged on a brake shell; an electromagnetic valve is fixed into the first cavity, a slider is arranged in the second cavity, the second cavity is sealed by a plug, the plug is connected with the slider by a second spring, and a second steel ball is arranged between the slider and an oil drain passage; a piston is arranged in the third cavity; medium oil and the second spring jointly push the slider when the electromagnetic valve is powered on, the oil drain passage is sealed by the second steel ball, the medium oil pushes the piston to move downwardly, the pressure of the medium oil in a piston cavity rises when an exhaust valve of an engine is stopped from resetting by the bottom of the piston, the medium oil and a first spring jointly act to push a first steel ball to move downwardly, an oil inlet hole of the piston is sealed, the medium oil in the piston cavity is turned into high-pressure oil, and the piston is stopped from moving upwardly, so that the exhaust valve is opened in an ejected manner, and the purpose of braking the engine is achieved. The invention further discloses a variable-pressure gas release brake.
Description
Technical field
The present invention relates to field of mechanical technique, particularly a kind of pressure becomes lose heart braking method and a kind of change of the pressure for engine braking deflation type break obtained by the method.
Background technique
When automobile run in the process of moving emergency case need regulation speed time, driver should carry out continuous braking to automobile, thus makes the velocity-stabilization of automobile at certain safety value.But, in this case, depending merely on service braking sytem is be difficult to such braking task, to its temperature significantly be raised because the break in driving automatic system works continually, so that Braking efficiency decline, even total failure, therefore in automobile, major part all have matched complemental brake system.
Engine brake is widely used on motorbus and heavy-duty commercial vehicle as complemental brake system, its utilization effectively reduces the mechanical wear of conventional brake, improve the working life of conventional brake, the safety reliability that effective raising vehicle travels, the working service cost of great reduction vehicle, improve conveying efficiency, particularly promote the safety reliability of heavy-duty vehicle when lower long slope.
At present, its structure of existing engine brake is comparatively complicated, and cost is higher, and sealability is poor, and braking force is lower, and oil input channel and draining road are same pipeline, thus the speed of response of break is comparatively slow, and braking effect is unsatisfactory.
Summary of the invention
The object of the invention is to, for the problems referred to above, provide a kind of pressure to become the braking method that loses heart.
Present invention also offers a kind of pressure implementing the disappointing braking method of above-mentioned pressure change and become deflation type break.
The technological scheme that the present invention is adopted for achieving the above object is:
A kind of pressure becomes the braking method that loses heart, and it comprises the following steps:
(1) brake casing is set, on this brake casing, direction is provided with one first cavity, one second cavity and one the 3rd cavity successively in order, an oil input channel is connected with between the middle part of the 3rd cavity and the first cavity, a draining road is connected with between the top of the 3rd cavity and the second cavity, the rear portion of this second cavity is communicated with oil input channel, and the front portion of this second cavity is provided with a drain tap;
(2) be fixed in the first cavity by a solenoid valve, the oil outlet on this solenoid valve is connected with this oil input channel;
(3) slide block can be arranged at slidingly back and forth in this second cavity and with a plug by this second cavity back-end sealing, to be connected with one second spring between this plug and slide block, between this slide block and draining road, to be provided with one second steel ball;
(4) piston can be slided up and down to be arranged in the 3rd cavity, the bottom of this piston is in the top of engine exhaust port, one adjusting screw stretches into the 3rd cavity from the top of the 3rd cavity, the end of this adjusting screw is provided with a restraining groove, the position limit pin that one diameter is less than this restraining groove height passes this restraining groove and is fixedly connected with piston tip, the top of this piston is provided with a piston cavity, the bottom of this piston cavity is provided with an oil inlet hole be communicated with this oil input channel, in piston cavity, just one first steel ball is provided with to this oil inlet hole, one first spring is provided with between this first steel ball and adjusting screw end,
(5) when solenoid valves, solenoid valve is opened, Medium Oil to be entered in the second cavity by oil input channel and jointly promotes slide block with this second spring, draining road seals up by this slipper push second steel ball, Medium Oil enters into piston cavity by oil inlet hole, promote this piston to be moved downward by initial position, until this position limit pin contacts with the bottom of restraining groove, now piston is in the position that pressure becomes the braking operation that loses heart, when engine exhaust port reset is stopped by piston bottom end, Medium Oil pressure in piston cavity raises, Medium Oil and the first spring acting in conjunction promote the first steel ball and move downward and sealed by piston oil inlet hole, Medium Oil in this piston cavity becomes high pressure oil, stop piston upwards, limiting engine exhaust valve closing, thus reach the object that motor is braked,
The order of described step (2), (3) and (4) in no particular order.
In described step (5), at these the second steel ball two ends, in draining road, Medium Oil is high pressure oil, in second cavity, Medium Oil is low pressure oil, in this second spring and the second cavity, the active force of Medium Oil to the second steel ball is greater than in draining road that Medium Oil is to the active force of the second steel ball, and in this draining road, the active force of Medium Oil to the second steel ball is greater than this second spring to the active force of the second steel ball.
It is further comprising the steps of:
(6) when solenoid valve power-off, closed electromagnetic valve, oil input channel and the second cavity medium oil pressure reduce to zero, in second cavity, Medium Oil disappears to the active force of slide block, the active force of this second spring to the second steel ball is less than the Medium Oil of this draining road mesohigh to the active force of the second steel ball, and this second steel ball is pushed open by Medium Oil, and the Medium Oil in piston cavity is got rid of through drain tap, piston reset, to initial position, stops braking.
This brake casing is also provided with a reseting shrapnel, and this reseting shrapnel one end is fixed on brake casing, and the other end of this reseting shrapnel is pressed in the bottom of this piston.
A kind of pressure implementing the disappointing braking method of aforementioned pressure change becomes deflation type break, it comprises brake casing, on this brake casing, direction is provided with one first cavity successively in order, one second cavity and one the 3rd cavity, an oil input channel is connected with between the middle part of the 3rd cavity and the first cavity, a draining road is connected with between the top of the 3rd cavity and the second cavity, the rear portion of this second cavity is communicated with oil input channel, the front portion of this second cavity is provided with a drain tap, one solenoid valve is fixed in the first cavity, oil outlet on this solenoid valve is connected with this oil input channel, one draining control unit is arranged in this second cavity, one brake piston assembly is arranged in the 3rd cavity, the bottom of this brake piston assembly is in above engine exhaust port.
Described draining control unit comprises a slide block, a plug, one second spring and one second steel ball, this slide block can be arranged in this second cavity slidingly back and forth, this plug is by the second cavity back-end sealing, this second spring is connected between this plug and slide block, and this second steel ball is arranged between the port in slide block and draining road.
This brake piston assembly comprises a piston, one adjusting screw, one position limit pin, one first spring and one first steel ball, this piston can slide up and down to be arranged in the 3rd cavity, the top of engine exhaust port is located in the bottom of this piston, described adjusting screw stretches into the 3rd cavity from the top of the 3rd cavity, the end of this adjusting screw is provided with a restraining groove, described position limit pin passes this restraining groove and is fixedly connected with piston tip, the diameter of this position limit pin is less than this restraining groove height, the top of this piston is provided with a piston cavity, the bottom of this piston cavity is provided with an oil inlet hole be communicated with this oil input channel, this first steel ball is just being arranged at the bottom of this piston cavity to this oil inlet hole, this first spring is located between the first steel ball and adjusting screw end.
This brake casing is also provided with a reseting shrapnel, and this reseting shrapnel one end is fixed on brake casing, and the other end of this reseting shrapnel is pressed in the bottom of this piston.
This brake casing is also provided with an adjusting nut, and this adjusting nut is placed on this adjusting screw top.
The diameter in this draining road is less than the diameter of this oil input channel, and the area of this second cavity cross section is greater than the area of this draining road cross section.
Beneficial effect of the present invention is: the inventive method is simply ingenious, and product structure design is rationally reliable, thus effectively reduces costs, its favorable sealing property, braking force is high, oil input channel and draining road is provided separately, thus effectively improve the speed of response of break, braking effect is good.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
Accompanying drawing explanation
Fig. 1 be the present invention in working order time structural representation;
Fig. 2 is the structural representation of the present invention when off working state.
Embodiment
Embodiment: see Fig. 1 and Fig. 2, the present invention's one pressure becomes the braking method that loses heart, and it comprises the following steps:
(1) brake casing 1 is set, on this brake casing 1, direction is provided with one first cavity 11,1 second cavity 12 and one the 3rd cavity 13 successively in order, an oil input channel 14 is connected with between the middle part of the 3rd cavity 13 and the first cavity 11, a draining road 15 is connected with between the top of the 3rd cavity 13 and the second cavity 12, the rear portion of this second cavity 12 is communicated with oil input channel 14, and the front portion of this second cavity 12 is provided with a drain tap 16;
(2) be fixed in the first cavity 11 by a solenoid valve 2, the oil outlet 21 on this solenoid valve is connected with this oil input channel 14;
(3) slide block 3 can be arranged at slidingly back and forth in this second cavity 12 and with a plug 4 by this second cavity 12 back-end sealing, to be connected with one second spring 5 between this plug 4 and slide block 3, between this slide block 3 and draining road 15, to be provided with one second steel ball 6;
(4) piston 7 can be slided up and down to be arranged in the 3rd cavity 13, the bottom of this piston 7 is in the top of engine exhaust port 8, one adjusting screw 9 stretches into the 3rd cavity 13 from the top of the 3rd cavity 13, the end of this adjusting screw 9 is provided with a restraining groove 91, the position limit pin 10 that one diameter is less than this restraining groove 91 height passes this restraining groove 91 and is fixedly connected with piston 7 top, the top of this piston 7 is provided with a piston cavity 71, the bottom of this piston cavity 71 is provided with an oil inlet hole 711 be communicated with this oil input channel 14, in piston cavity 71, just one first steel ball 72 is provided with to this oil inlet hole 711, one first spring 73 is provided with between this first steel ball 72 and adjusting screw 9 end,
(5) when solenoid valve 2 is energized, solenoid valve 2 is opened, Medium Oil flows into from the filler opening 22 of solenoid valve 2, Medium Oil to be entered in the second cavity 12 by oil input channel 14 and jointly promotes slide block 3 with this second spring 5, this slide block 3 promotes the second steel ball 6 and is sealed up in draining road 15, Medium Oil enters into piston cavity 71 by oil inlet hole 711, promote this piston 7 to be moved downward by initial position, until this position limit pin 10 contacts with the bottom of restraining groove 91, now piston 7 is in the position that pressure becomes the braking operation that loses heart, when engine exhaust port 8 reset stopped by piston 7 bottom time, Medium Oil pressure in piston cavity 71 raises, Medium Oil and the first spring 73 acting in conjunction promote the first steel ball 72 and move downward and sealed by piston 7 oil inlet hole 711, Medium Oil in this piston cavity 71 becomes high pressure oil, piston 7 is stoped to move upward, limiting engine exhaust valve closing, thus reach the object that motor is braked,
The order of described step (2), (3) and (4) in no particular order.
In described step (5), at these the second steel ball 6 two ends, in draining road 15, Medium Oil is high pressure oil, in second cavity 12, Medium Oil is low pressure oil, in this second spring 5 and the second cavity 12, the active force of Medium Oil to the second steel ball 6 is greater than in draining road 15 that Medium Oil is to the active force of the second steel ball 6, and in this draining road 15, the active force of Medium Oil to the second steel ball 6 is greater than the active force of this second spring 5 to the second steel ball 6.
It is further comprising the steps of:
(6) when solenoid valve 2 power-off, solenoid valve 2 cuts out, oil input channel 14 and the second cavity 12 medium oil pressure reduce to zero, in second cavity 12, Medium Oil disappears to the active force of slide block 3, the active force of this second spring 5 to the second steel ball 6 is less than the Medium Oil of this draining road 15 mesohigh to the active force of the second steel ball 6, and this second steel ball 6 is pushed open by Medium Oil, and the Medium Oil in piston cavity 71 is got rid of through drain tap 16, piston 7 is reset to initial position, stops braking.
This brake casing 1 is also provided with a reseting shrapnel 18, this reseting shrapnel 18 one end is fixed on brake casing 1, and the other end of this reseting shrapnel 18 is pressed in the bottom of this piston 7.
A kind of pressure implementing the disappointing braking method of aforementioned pressure change becomes deflation type break, it comprises brake casing 1, on this brake casing 1, direction is provided with one first cavity 11 successively in order, one second cavity 12 and one the 3rd cavity 13, an oil input channel 14 is connected with between the middle part of the 3rd cavity 13 and the first cavity 11, a draining road 15 is connected with between the top of the 3rd cavity 13 and the second cavity 12, the rear portion of this second cavity 12 is communicated with oil input channel 14, the front portion of this second cavity 12 is provided with a drain tap 16, one solenoid valve 2 is fixed in the first cavity 11, oil outlet 21 on this solenoid valve is connected with this oil input channel 14, one draining control unit is arranged in this second cavity 12, one brake piston assembly is arranged in the 3rd cavity 13, the bottom of this brake piston assembly is in above engine exhaust port 8.
Described draining control unit comprises slide block 3, plug 4,1 second spring 5 and one second steel ball 6, this slide block 3 can be arranged in this second cavity 12 slidingly back and forth, this plug 4 is by the second cavity 12 back-end sealing, this second spring 5 is connected between this plug 4 and slide block 3, and this second steel ball 6 is arranged between the port in slide block 3 and draining road 15.
This brake piston assembly comprises a piston 7, one adjusting screw 9, one position limit pin 10, one first spring 73 and one first steel ball 72, this piston 7 can slide up and down to be arranged in the 3rd cavity 13, the top of engine exhaust port 8 is located in the bottom of this piston 7, described adjusting screw 9 stretches into the 3rd cavity 13 from the top of the 3rd cavity 13, the end of this adjusting screw 9 is provided with a restraining groove 91, described position limit pin 10 passes this restraining groove 91 and is fixedly connected with piston 7 top, the diameter of this position limit pin 10 is less than this restraining groove 91 height, the top of this piston 7 is provided with a piston cavity 71, the bottom of this piston cavity 71 is provided with an oil inlet hole 711 be communicated with this oil input channel 14, this first steel ball 72 is just being arranged at the bottom of this piston cavity 71 to this oil inlet hole 711, this first spring 73 is located between the first steel ball 72 and adjusting screw 9 end.
This brake casing 1 is also provided with a reseting shrapnel 18, this reseting shrapnel 18 one end is fixed on brake casing 1, and the other end of this reseting shrapnel 18 is pressed in the bottom of this piston 7.
This brake casing 1 is also provided with an adjusting nut 19, this adjusting nut 19 is placed on this adjusting screw 9 top.
The diameter in this draining road 15 is less than the diameter of this oil input channel 14, and the area of this second cavity 12 cross section is greater than the area of this draining road 15 cross section.
When solenoid valve 2 is energized, solenoid valve 2 is opened, Medium Oil to be entered in the second cavity 12 by oil input channel 14 and jointly promotes slide block 3 with this second spring 5, this slide block 3 promotes the second steel ball 6 and is sealed up in draining road 15, Medium Oil enters into piston cavity 71 by oil inlet hole 711, promote this piston 7 to be moved downward by initial position, until this position limit pin 10 contacts with the bottom of restraining groove 91, now piston 7 is in the position that pressure becomes the braking operation that loses heart, when engine exhaust port 8 reset stopped by piston 7 bottom time, Medium Oil pressure in piston cavity 71 raises, Medium Oil and the first spring 73 acting in conjunction promote the first steel ball 72 and move downward and sealed by piston 7 oil inlet hole 711, Medium Oil in this piston cavity 71 becomes high pressure oil, piston 7 is stoped to move upward, limiting engine exhaust valve 8 cuts out, thus reach the object that motor is braked, when solenoid valve 2 power-off, solenoid valve 2 cuts out, oil input channel 14 and the second cavity 12 medium oil pressure reduce to zero, in second cavity 12, Medium Oil disappears to the active force of slide block 3, the active force of this second spring 5 to the second steel ball 6 is less than the Medium Oil of this draining road 15 mesohigh to the active force of the second steel ball 6, this second steel ball 6 is pushed open by Medium Oil, Medium Oil in piston cavity 71 is got rid of through drain tap 16, piston 7 is reset to initial position, stop braking.
The inventive method is simply ingenious, and product structure design is rationally reliable, thus effectively reduces costs, its favorable sealing property, and braking force is high, and oil input channel 14 and draining road 15 are provided separately, thus effectively improve the speed of response of break, braking effect is good.
As described in the present embodiment of the invention, press with other of the same or similar structure of the present invention and become the pressure of losing heart braking method and implement the method and become deflation type break, all in scope.
Claims (8)
1. pressure becomes the braking method that loses heart, and it is characterized in that, it comprises the following steps:
(1) brake casing is set, on this brake casing, direction is provided with one first cavity, one second cavity and one the 3rd cavity successively in order, an oil input channel is connected with between the middle part of the 3rd cavity and the first cavity, a draining road is connected with between the top of the 3rd cavity and the second cavity, the rear portion of this second cavity is communicated with oil input channel, and the front portion of this second cavity is provided with a drain tap;
(2) be fixed in the first cavity by a solenoid valve, the oil outlet on this solenoid valve is connected with this oil input channel;
(3) slide block can be arranged at slidingly back and forth in this second cavity and with a plug by this second cavity back-end sealing, to be connected with one second spring between this plug and slide block, between this slide block and draining road, to be provided with one second steel ball;
(4) piston can be slided up and down to be arranged in the 3rd cavity, the bottom of this piston is in the top of engine exhaust port, one adjusting screw stretches into the 3rd cavity from the top of the 3rd cavity, the end of this adjusting screw is provided with a restraining groove, the position limit pin that one diameter is less than this restraining groove height passes this restraining groove and is fixedly connected with piston tip, the top of this piston is provided with a piston cavity, the bottom of this piston cavity is provided with an oil inlet hole be communicated with this oil input channel, in piston cavity, just one first steel ball is provided with to this oil inlet hole, one first spring is provided with between this first steel ball and adjusting screw end,
(5) when solenoid valves, solenoid valve is opened, Medium Oil to be entered in the second cavity by oil input channel and jointly promotes slide block with this second spring, draining road seals up by this slipper push second steel ball, Medium Oil enters into piston cavity by oil inlet hole, promote this piston to be moved downward by initial position, until this position limit pin contacts with the bottom of restraining groove, now piston is in the position that pressure becomes the braking operation that loses heart, when engine exhaust port reset is stopped by piston bottom end, Medium Oil pressure in piston cavity raises, Medium Oil and the first spring acting in conjunction promote the first steel ball and move downward and sealed by piston oil inlet hole, Medium Oil in this piston cavity becomes high pressure oil, stop piston upwards, limiting engine exhaust valve closing, thus reach the object that motor is braked,
The order of described step (2), (3) and (4) in no particular order.
2. pressure becomes the braking method that loses heart according to claim 1, it is characterized in that, in described step (5), at these the second steel ball two ends, in draining road, Medium Oil is high pressure oil, in second cavity, Medium Oil is low pressure oil, and in this second spring and the second cavity, the active force of Medium Oil to the second steel ball is greater than in draining road that Medium Oil is to the active force of the second steel ball, and in this draining road, the active force of Medium Oil to the second steel ball is greater than this second spring to the active force of the second steel ball.
3. according to claim 1 or 2, pressure becomes the braking method that loses heart, and it is characterized in that, it is further comprising the steps of:
(6) when solenoid valve power-off, closed electromagnetic valve, oil input channel and the second cavity medium oil pressure reduce to zero, in second cavity, Medium Oil disappears to the active force of slide block, the active force of this second spring to the second steel ball is less than the Medium Oil of this draining road mesohigh to the active force of the second steel ball, and this second steel ball is pushed open by Medium Oil, and the Medium Oil in piston cavity is got rid of through drain tap, piston reset, to initial position, stops braking.
4. pressure becomes the braking method that loses heart according to claim 1, and it is characterized in that, this brake casing is also provided with a reseting shrapnel, this reseting shrapnel one end is fixed on brake casing, and the other end of this reseting shrapnel is pressed in the bottom of this piston.
5. one kind implements the claims the pressure change deflation type break that pressure described in 1 becomes the braking method that loses heart, it comprises brake casing, it is characterized in that: on this brake casing, direction is provided with one first cavity successively in order, one second cavity and one the 3rd cavity, an oil input channel is connected with between the middle part of the 3rd cavity and the first cavity, a draining road is connected with between the top of the 3rd cavity and the second cavity, the rear portion of this second cavity is communicated with oil input channel, the front portion of this second cavity is provided with a drain tap, one solenoid valve is fixed in the first cavity, oil outlet on this solenoid valve is connected with this oil input channel, one draining control unit is arranged in this second cavity, one brake piston assembly is arranged in the 3rd cavity, the bottom of this brake piston assembly is in above engine exhaust port, described draining control unit comprises a slide block, a plug, one second spring and one second steel ball, this slide block can be arranged in this second cavity slidingly back and forth, this plug is by the second cavity back-end sealing, this second spring is connected between this plug and slide block, and this second steel ball is arranged between the port in slide block and draining road, this brake piston assembly comprises a piston, one adjusting screw, one position limit pin, one first spring and one first steel ball, this piston can slide up and down to be arranged in the 3rd cavity, the top of engine exhaust port is located in the bottom of this piston, described adjusting screw stretches into the 3rd cavity from the top of the 3rd cavity, the end of this adjusting screw is provided with a restraining groove, described position limit pin passes this restraining groove and is fixedly connected with piston tip, the diameter of this position limit pin is less than this restraining groove height, the top of this piston is provided with a piston cavity, the bottom of this piston cavity is provided with an oil inlet hole be communicated with this oil input channel, this first steel ball is just being arranged at the bottom of this piston cavity to this oil inlet hole, this first spring is located between the first steel ball and adjusting screw end.
6. pressure becomes deflation type break according to claim 5, and it is characterized in that, this brake casing is also provided with a reseting shrapnel, this reseting shrapnel one end is fixed on brake casing, and the other end of this reseting shrapnel is pressed in the bottom of this piston.
7. pressure becomes deflation type break according to claim 5, and it is characterized in that, this brake casing is also provided with an adjusting nut, this adjusting nut is placed on this adjusting screw top.
8. pressure becomes deflation type break according to claim 5, and it is characterized in that, the diameter in this draining road is less than the diameter of this oil input channel, and the area of this second cavity cross section is greater than the area of this draining road cross section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310159070.7A CN103244231B (en) | 2013-05-03 | 2013-05-03 | Variable-pressure gas release braking method and variable-pressure gas release brake for implementing same |
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| CN201310159070.7A CN103244231B (en) | 2013-05-03 | 2013-05-03 | Variable-pressure gas release braking method and variable-pressure gas release brake for implementing same |
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| CN103244231B true CN103244231B (en) | 2015-04-29 |
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| CN103953413B (en) * | 2014-03-21 | 2016-05-04 | 哈尔滨工程大学 | Multi-stage booster valve exhaust gear |
| CN103953412B (en) * | 2014-03-21 | 2016-08-03 | 哈尔滨工程大学 | Classification booster-type air bleeding valve |
| CN109424382B (en) * | 2017-09-04 | 2023-08-22 | 北京汽车动力总成有限公司 | Power valve control device and automobile |
| CN109184847B (en) * | 2018-08-27 | 2024-05-24 | 南京威孚金宁有限公司 | Engine compression release brake valve control system and working method thereof |
| US10794346B2 (en) | 2019-01-24 | 2020-10-06 | Caterpillar Inc. | Fuel rail |
| CN112648040B (en) * | 2020-12-22 | 2022-03-25 | 东风商用车有限公司 | Engine compression release type brake and braking method thereof |
| CN113864662B (en) * | 2021-10-19 | 2023-04-07 | 如皋市井上捏和机械厂 | Kneading machine steam leakage self-checking pipeline |
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| JP2645942B2 (en) * | 1991-10-18 | 1997-08-25 | 日野自動車工業株式会社 | Method and apparatus for controlling supply and exhaust valves of an internal combustion engine |
| CN101649761A (en) * | 2009-08-16 | 2010-02-17 | 李金龙 | Gas bleed brake of engine |
| CN201751541U (en) * | 2010-07-09 | 2011-02-23 | 青岛智远汽车部件有限公司 | Electric control engine discharging brake |
| CN102505976B (en) * | 2011-11-24 | 2015-10-21 | 浙江九隆机械有限公司 | Engine brake |
| CN202510226U (en) * | 2012-04-01 | 2012-10-31 | 深圳市特尔佳科技股份有限公司 | Engine brake |
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