CN102937041A - Rocker arm body capable of realizing braking function of engine - Google Patents
Rocker arm body capable of realizing braking function of engine Download PDFInfo
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- CN102937041A CN102937041A CN2012104801870A CN201210480187A CN102937041A CN 102937041 A CN102937041 A CN 102937041A CN 2012104801870 A CN2012104801870 A CN 2012104801870A CN 201210480187 A CN201210480187 A CN 201210480187A CN 102937041 A CN102937041 A CN 102937041A
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Abstract
The invention relates to a rocker arm body capable of realizing a braking function of an engine, which is characterized in that an air exhausting rocker arm is provided with a braking driving chamber, a control valve chamber and a braking driven chamber, wherein the braking driving chamber is internally provided with a braking driving valve; a braking driving valve resetting spring is sleeved on the driving valve; the control valve chamber is internally provided with a control valve; a control valve resetting spring is sleeved on the control valve; the braking driven chamber is internally provided with a braking driven valve; a driven valve resetting spring is sleeved on the braking driven valve; the braking driving valve works under the driving of a special cam; the braking driving chamber is located at the tail end of the air exhausting rocker arm; the control valve chamber is located above the braking driving chamber; the braking driven chamber is located at the front end of the air exhausting rocker arm; and the braking driving chamber, the control valve chamber and the braking driven chamber are communicated through an oil path on the air exhausting rocker arm. The braking of an independent cam type engine can be realized by using the engine, namely one special cam is used for engine braking, so as to realize the independent cam braking at an air inlet side by a cam shaft of a top-arranged cam shaft engine, and therefore, the braking power is improved.
Description
Technical field
The present invention relates to a kind of rocker body that can realize the engine braking function, particularly relate to diesel engine auxiliary braking rocking arm, belong to the diesel engine technologies field.
Background technique
The gross mass of Hyundai Motor is increasing, and the speed of a motor vehicle is more and more higher, only relies on the primary brake system of vehicle self can not satisfy brake request under the vehicle high-speed fully loaded transportation condition.In order to guarantee the Safety performance of vehicle, must increase complemental brake system.Engine braking is by the fall holder of automobile to motor, utilizes mechanical loss, pumping loss and the compression work etc. of motor to produce braking function, thereby increases automobile brake power.
When the precipitous road surfaces such as lower long slope, rugged hill path, must utilize engine braking, effectively reduce the frequency of utilization of foot brake, avoid causing the temperature of brake bush to raise because of the long-time break that uses, braking force is descended, in addition ineffective.
Summary of the invention
The object of the present invention is to provide a kind of rocker body that can realize the engine braking function, it can make motor realize the independent cam type engine braking, namely the cam of a special use is used for engine braking, realize that the overhead camshaft engine camshaft in the braking of air inlet side realization independent cam, has improved braking force.
Technical problem of the present invention is solved by the following technical programs: a kind of rocker body that can realize the engine braking function is characterized in that: be furnished with braking active chamber, control valve pocket, brake driven chamber at exhaust rocker arm; Wherein braking is initiatively installed the braking aggressive valve in the chamber, and the aggressive valve return spring is sleeved on the aggressive valve; In the control valve pocket control valve is installed, the control valve return spring is sleeved on the control valve; Brake the braking servo valve is installed in the driven chamber, the servo valve return spring is sleeved on the braking servo valve, and the braking aggressive valve is worked under the driving of dedicated cam; Braking active chamber is positioned at the end of exhaust rocker arm, and the control valve pocket is positioned at the initiatively top in chamber of braking, brakes the front end that driven chamber is positioned at exhaust rocker arm; Braking initiatively chamber, control valve pocket, the driven chamber of braking is connected by the oil circuit on the exhaust rocker arm.
When working, engine braking forms a closing oil path between described braking aggressive valve and the braking servo valve.
Good effect of the present invention is rational in infrastructure, and is easy to operate, realizes that the overhead camshaft engine camshaft in the braking of air inlet side realization independent cam, has improved braking force.
Description of drawings
Fig. 1 is the structural drawing of rocker arm for braking integrated engine device.
Fig. 2 is the external structure schematic diagram of rocker arm for braking integrated engine device.
When Fig. 3 is engine braking work, the key plan of each device in the rocking arm.
When Fig. 4 is the cancellation engine braking, the key plan of each device in the rocking arm.
Block diagram when Fig. 5 is rocker arm for braking integrated engine work.
Embodiment
Below in conjunction with accompanying drawing the present invention is done progressive description: as shown in Figure 1, 2, a kind of rocker body that can realize the engine braking function is characterized in that: be furnished with braking initiatively chamber 2, control valve pocket 3, the driven chamber 4 of braking at exhaust rocker arm 1; Wherein aggressive valve 5 are braked in the 2 interior installations of braking active chamber, and aggressive valve return spring 6 is sleeved on the aggressive valve; Control valve pocket 3 interior installation control valves 7, control valve return spring 8 is sleeved on the control valve; Brake driven chamber 4 interior installation braking servo valves 9, servo valve return spring 10 is sleeved on the braking servo valve, and the braking aggressive valve is worked under the driving of dedicated cam; Braking active chamber 2 is positioned at the end of exhaust rocker arm 1, and control valve pocket 3 is positioned at the initiatively top in chamber 2 of braking, brakes the front end that driven chamber 4 is positioned at exhaust rocker arm 1.Braking initiatively chamber 2, control valve pocket 3, the driven chamber 4 of braking is connected by the oil circuit on the exhaust rocker arm 1.
When working, engine braking forms a closing oil path between described braking aggressive valve 5 and the braking servo valve 9.
At camshaft a dedicated cam 11 that is specifically designed to engine braking is arranged, as shown in Figure 3, when needing engine braking work, machine oil enters the braking active chamber 2 that is integrated on the exhaust rocker arm 1 through the brake circuit of pitman arm shaft, control valve pocket 3 and the driven chamber 4 of braking, machine oil compression brake aggressive valve 5 moves downward, braking aggressive valve 5 is contacted with dedicated cam, under the driving of dedicated cam 11, braking aggressive valve 5 compressor oils, by the oil duct in the exhaust rocker arm 1, drive braking servo valve 9 and near piston top dead center, open an exhaust valve 12, discharge cylinder inner high voltage gas, realize the engine braking function, improve braking force.
As shown in Figure 4,During the cancellation braking state, there is not engine oil pressure to be reduced near 0 in the braking oil duct, braking aggressive valve 5 breaks away from dedicated cam 11 under the effect of aggressive valve return spring 6, braking servo valve 9 rests on the top under the effect of servo valve return spring 10, can not open exhaust valve 12, engine braking is inoperative, engine work.
Exhaust rocker arm 1 an interior integrated braking aggressive valve 5, braking servo valve 9 and a cover machine oil control gear, braking aggressive valve 5 is used for compressor oil, drives braking servo valve 9 by machine oil; The machine oil control gear is the switch gear of engine braking, after the energising of engine braking control solenoid valve, pressure machine oil enters the braking oil duct on the exhaust rocker arm 1, promote control valve 7 and close braking draining passage, make the oil circuit that forms sealing between braking aggressive valve 5 and the braking servo valve 9, engine braking works; After the solenoid valve outage, oil duct pressure decreased on the exhaust rocker arm 1 is near 0, control valve 7 resets under the effect of control valve return spring 8, braking draining road is opened, pressure in the brake circuit descends rapidly, braking aggressive valve 5 and braking servo valve 9 reset under the effect of return spring separately, and engine braking is inoperative.
Block diagram when working such as Fig. 5 rocker arm for braking integrated engine, when lower long slope, rugged hill path or under the high-speed overload condition, complemental brake system is started working, after car load ECU sends brake signal, solenoid valve is opened, and oil pressure actuated machine oil control gear makes the braking aggressive valve promote the braking servo valve, exhaust valve is opened, and realizes braking function.
In a word, this integrated engine brake structure is simple, good rigidity, and cost is low; Because will brake aggressive valve 5 is integrated on the exhaust rocker arm 1, can make camshaft use easily the independent cam type engine braking at the motor of air inlet side.
Claims (2)
1. the rocker body that can realize the engine braking function is characterized in that: be furnished with braking active chamber, control valve pocket, brake driven chamber at exhaust rocker arm; Wherein braking is initiatively installed the braking aggressive valve in the chamber, and the aggressive valve return spring is sleeved on the aggressive valve; In the control valve pocket control valve is installed, the control valve return spring is sleeved on the control valve; Brake the braking servo valve is installed in the driven chamber, the servo valve return spring is sleeved on the braking servo valve, and the braking aggressive valve is worked under the driving of dedicated cam; Braking active chamber is positioned at the end of exhaust rocker arm, and the control valve pocket is positioned at the initiatively top in chamber of braking, brakes the front end that driven chamber is positioned at exhaust rocker arm; Braking initiatively chamber, control valve pocket, the driven chamber of braking is connected by the oil circuit on the exhaust rocker arm.
2. a kind of rocker body that can realize the engine braking function according to claim 1 is characterized in that forming a closing oil path between described braking aggressive valve and the braking servo valve when engine braking is worked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104801870A CN102937041A (en) | 2012-11-23 | 2012-11-23 | Rocker arm body capable of realizing braking function of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104801870A CN102937041A (en) | 2012-11-23 | 2012-11-23 | Rocker arm body capable of realizing braking function of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102937041A true CN102937041A (en) | 2013-02-20 |
Family
ID=47695956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104801870A Pending CN102937041A (en) | 2012-11-23 | 2012-11-23 | Rocker arm body capable of realizing braking function of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102937041A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397923A (en) * | 2013-08-15 | 2013-11-20 | 湖北广奥减振器制造有限公司 | Device for compressing and releasing engine braking |
| CN106499461A (en) * | 2016-12-30 | 2017-03-15 | 广东技术师范学院 | A kind of engine charge blocks energy-saving mechanism |
| CN111788369A (en) * | 2017-12-04 | 2020-10-16 | 伊顿智能动力有限公司 | Engine brake rocker arm with offset configuration |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473047A (en) * | 1980-02-25 | 1984-09-25 | The Jacobs Mfg. Company | Compression release engine brake |
| CN102414403A (en) * | 2009-04-27 | 2012-04-11 | 雅各布斯车辆系统公司 | Dedicated rocker arm engine brake |
| CN102414424A (en) * | 2009-05-06 | 2012-04-11 | 雅各布斯车辆系统公司 | Lost motion variable valve actuation system for engine braking and early exhaust opening |
| CN202300563U (en) * | 2011-11-09 | 2012-07-04 | 中国第一汽车股份有限公司 | Rocker arm for braking integrated engine |
| CN102597434A (en) * | 2009-11-03 | 2012-07-18 | 雅各布斯车辆系统公司 | Rocker shaft mounted engine brake |
| CN202937322U (en) * | 2012-11-23 | 2013-05-15 | 中国第一汽车股份有限公司 | Integrated rocking arm for engine braking |
-
2012
- 2012-11-23 CN CN2012104801870A patent/CN102937041A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4473047A (en) * | 1980-02-25 | 1984-09-25 | The Jacobs Mfg. Company | Compression release engine brake |
| CN102414403A (en) * | 2009-04-27 | 2012-04-11 | 雅各布斯车辆系统公司 | Dedicated rocker arm engine brake |
| CN102414424A (en) * | 2009-05-06 | 2012-04-11 | 雅各布斯车辆系统公司 | Lost motion variable valve actuation system for engine braking and early exhaust opening |
| CN102597434A (en) * | 2009-11-03 | 2012-07-18 | 雅各布斯车辆系统公司 | Rocker shaft mounted engine brake |
| CN202300563U (en) * | 2011-11-09 | 2012-07-04 | 中国第一汽车股份有限公司 | Rocker arm for braking integrated engine |
| CN202937322U (en) * | 2012-11-23 | 2013-05-15 | 中国第一汽车股份有限公司 | Integrated rocking arm for engine braking |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397923A (en) * | 2013-08-15 | 2013-11-20 | 湖北广奥减振器制造有限公司 | Device for compressing and releasing engine braking |
| CN106499461A (en) * | 2016-12-30 | 2017-03-15 | 广东技术师范学院 | A kind of engine charge blocks energy-saving mechanism |
| CN111788369A (en) * | 2017-12-04 | 2020-10-16 | 伊顿智能动力有限公司 | Engine brake rocker arm with offset configuration |
| CN111788369B (en) * | 2017-12-04 | 2022-08-05 | 伊顿智能动力有限公司 | Engine brake rocker arm with offset configuration |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130220 |