CN201513210U - Driving mechanism for engine brake and capable of being integrated with engine - Google Patents
Driving mechanism for engine brake and capable of being integrated with engine Download PDFInfo
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- CN201513210U CN201513210U CN 200920208707 CN200920208707U CN201513210U CN 201513210 U CN201513210 U CN 201513210U CN 200920208707 CN200920208707 CN 200920208707 CN 200920208707 U CN200920208707 U CN 200920208707U CN 201513210 U CN201513210 U CN 201513210U
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Abstract
A driving mechanism for an engine brake and capable of being integrated with an engine is formed by an exhaust valve control mechanism; the exhaust valve control mechanism comprises a driving force input mechanism and a driving force transfer mechanism which are connected with each other; an exhaust valve contact end is arranged in the driving force transfer mechanism and connected with a station control piston; the station control piston is arranged in the driving force transfer mechanism; and the exhaust valve contact end is provided with a first station and a second station. The driving mechanism utilizes the engine power to drive a control valve rod of an exhaust valve instead of utilizing a high-oil pressure hydraulic device, so that the driving mechanism can be integrated with the engine, thereby reducing the volume and the weight, shortening the brake reaction time, eliminating the high oil pressure and the leakage, the deformation and the load fluctuation caused by the high oil pressure, preventing the lift of a brake valve from being influenced by oil temperature, oil pressure and air content, and lowering the demand on engine piston and the clearance of an air valve; and the lift of the brake valve can be designed to be smaller.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to the braking device of motor, particularly a kind of can with the driving mechanism of the integrated engine braking of motor.
Background technique:
In the prior art, internal-combustion engine is known altogether as the method behaviour of brake tool, only needed motor temporarily is converted to compressor.Fuel oil is cut off in this conversion, when the engine piston compression stroke finishes or when finishing, open outlet valve, allowing to be compressed gas (being air during braking) is released, the motor energy that pressurized gas absorbed in compression stroke, can not turn back to engine piston at expansion stroke subsequently, but dissipate by the exhaust and the radiation system of motor.Final result is effective engine braking, slows down the speed of vehicle.
A precedent of engine brake is that the U.S. Patent number 3220392 that is provided by comings (Cummins) discloses, according to the engine braking system of this patent manufacturing commercial very successful.But, this type of engine braking system is the annex of overhead on motor.For this type of engine brake is installed, between cylinder and valve gap, to add packing ring, therefore, increased height, weight and the cost of motor extraly.Above-mentioned these problems are because engine braking system is used as an annex of motor, rather than of motor constituent element or integrated part caused.
Engine brake of the prior art is delivered to the outlet valve that will open through oil hydraulic circuit with the machinery input.Be usually included in reciprocating main piston in the master piston bore on the oil hydraulic circuit, this to-and-fro motion comes from the machinery input of motor, such as the shaking of oil sprayer rocking arm, the hydraulic fluid that moves through of main piston is delivered to sub-piston on the oil hydraulic circuit, make its to-and-fro motion in slave piston bore, sub-piston acts on the outlet valve directly or indirectly, produces the valve actuation of engine braking running.
Therefore, above-mentionedly there is another shortcoming by hydraulically powered conventional engines break, be the contractibility or the distortion of hydraulic system, this flexibility with liquid is relevant, a large amount of compressions that high flexibility causes brake valve to rise reduce, valve rises reduces the increase that causes valve to carry, and the increase that valve carries causes higher flexibility, causes a kind of vicious circle.In addition, the valve liter that is caused by hydraulic pressure distortion reduces to increase along with the increase of engine speed, and to rise trend on the contrary with the desired brake valve of engine braking performance.In order to reduce flexible hydraulic, must use large diameter hydraulic piston, increase volume and weight.And oily stream need make enlarged bore piston stretch out for a long time or withdraw, and causes that braking system inertia is big, reaction is slow.
Summary of the invention:
The purpose of this utility model be to provide a kind of can with the driving mechanism of the integrated engine braking of motor, the described this overhead mode that can will solve engine braking system in the prior art with the driving mechanism of the integrated engine braking of motor has increased the height of motor and the technical problem of manufacture cost, will solve the technical problem that braking system inertia is big, reaction is slow that hydraulically powered engine brake exists simultaneously.
Of the present utility modelly thisly can constitute by an outlet valve control mechanism with the driving mechanism of the integrated engine braking of motor, wherein, described outlet valve control mechanism is made of a driving force input mechanism and a driving force transfer mechanism, described driving force input mechanism is connected with the driving force transfer mechanism, be provided with an outlet valve contact jaw in the driving force transfer mechanism, described outlet valve contact jaw is connected by driving mechanism with a station control piston, be provided with a hydraulic pressure cavity volume in the driving force transfer mechanism, described station control piston is arranged in the described hydraulic pressure cavity volume, the hydraulic pressure cavity volume is connected with a controller by the fluid passage, the outlet valve contact jaw has one first station and one second station, described driving force input mechanism is made of a cam, described driving force transfer mechanism is made of a rocking arm and a pitman arm shaft, described rocking arm is arranged on the pitman arm shaft; an end of rocking arm is connected with the driving force input mechanism; described hydraulic pressure cavity volume is arranged in the other end of rocking arm; the relative position of described pitman arm shaft and cam is fixed; an end of rocking arm is positioned at the rotation round of the bump of described cam, and described station control piston has a primary importance and a second place.
Further, described controller is made of the two-bit triplet solenoid valve.
Further, described station control piston has return spring.
Further, described station control piston has axially locating mechanism.
Further, described station control piston has radial location mechanism.
Working principle of the present utility model is: the driving force input mechanism is connected with the power take-off mechanism of motor, for example, cam is connected in the power take-off mechanism of motor.The driving force transfer mechanism transmits drive actions to the control valve rod of engine exhaust valve, unique position that can contact with the control valve rod of engine exhaust valve in the driving force transfer mechanism is the outlet valve contact jaw, the outlet valve contact jaw is under the control of station control piston, between first station and second station, switch, when first station, the outlet valve contact jaw touches the control valve rod of outlet valve, the action of driving force transfer mechanism can promote the control valve rod of outlet valve, and the action of outlet valve is by the motivational drive from motor; When second station, the control valve rod of outlet valve contact jaw and outlet valve breaks away from and keeps the gap, and the action of driving force transfer mechanism is to the not effect of control valve rod of outlet valve.The position of station control piston is controlled by controller, and the hydraulic channel between station control piston and the controller is a locking system independently.
The utility model is compared with prior art, and its effect is actively with tangible.The utility model utilizes the control valve rod of the motivational drive engine exhaust valve of motor, do not use the hydraulic pressure installation of high oil pressure to drive the control valve rod of engine exhaust valve, therefore can integrate with motor, reduce volume and weight, reduced reaction time, leakage, distortion and load fluctuation that high oil pressure and high oil pressure cause have been eliminated, brake valve rises the influence that is not subjected to oil temperature, oil pressure and air content, the brake valve liter can design forr a short time, reduces the requirement to engine piston and valve clearance.
Description of drawings:
Fig. 1 be of the present utility model can with the working principle schematic representation of the driving mechanism of the integrated engine braking of motor.
Fig. 2 is the schematic representation that can be operated in open position with the controller in the driving mechanism of the integrated engine braking of motor of the present utility model.
Fig. 3 is the schematic representation that can be operated in closed position with the controller in the driving mechanism of the integrated engine braking of motor of the present utility model.
Fig. 4 be of the present utility model can with an embodiment's of the driving mechanism of the integrated engine braking of motor schematic representation.
Embodiment:
Embodiment 1:
As shown in Figure 4, of the present utility model can with the driving mechanism 100 of the integrated engine braking of motor, constitute by an outlet valve control mechanism, wherein, described outlet valve control mechanism is made of a driving force input mechanism 230 and a driving force transfer mechanism 2002, described driving force input mechanism 230 is connected with driving force transfer mechanism 2002, be provided with an outlet valve contact jaw in the driving force transfer mechanism 2002, described outlet valve contact jaw and a station control piston 160 are connected by driving mechanism, be provided with a hydraulic pressure cavity volume 166 in the driving force transfer mechanism 2002, described station control piston 160 is arranged in the described hydraulic pressure cavity volume 166, hydraulic pressure cavity volume 166 is connected with a controller by the fluid passage, and the outlet valve contact jaw has one first station and one second station.Described driving force input mechanism 230 is made of a cam 2302.Described driving force transfer mechanism 2002 is made of a rocking arm 2102 and a pitman arm shaft 205, described rocking arm 2102 is arranged on the pitman arm shaft 205, described pitman arm shaft 205 is fixed with the relative position of cam 2302; link of an end of rocking arm 2102 is positioned at the rotation round of the bump of described cam 2302; described hydraulic pressure cavity volume 166 is arranged in the other end of rocking arm 2102, and described station control piston 160 has a primary importance and a second place.
Further, described controller is made of the two-bit triplet solenoid valve.
Further, described station control piston 160 has return spring.
Further, described station control piston 160 has axially locating mechanism.
Further, described station control piston 160 has radial location mechanism.
Working principle of the present utility model is: driving force input mechanism 230 is connected with the power take-off mechanism of motor, for example, cam 2302 is connected in the power take-off mechanism of motor.Driving force transfer mechanism 2002 transmits drive actions to the control valve rod 3001 of engine exhaust valve 300, unique position that can contact with the control valve rod 3001 of engine exhaust valve 300 in the driving force transfer mechanism 2002 is the outlet valve contact jaw, the outlet valve contact jaw is under 160 controls of station control piston, between first station and second station, switch, when first station, the outlet valve contact jaw touches the extending portion 116 of the control valve rod 3001 of outlet valve 300, the action of driving force transfer mechanism 2002 can promote the control valve rod 3001 of outlet valve 300, and the action of outlet valve 300 is by the motivational drive from motor; When second station, the control valve rod 3001 of outlet valve contact jaw and outlet valve 300 breaks away from and keeps gap 130, and the action of driving force transfer mechanism 2002 is to the not effect of control valve rod 3001 of outlet valve 300.The position of station control piston 160 is controlled by controller, and the hydraulic channel between station control piston 160 and the controller is a locking system independently.
Fig. 1 has represented that the normal operation 20 of motor and the braking that the utility model is realized operate the universal relation between 10.Have an engine exhaust valve 300 and an exhaust valve actuation device 200 in the typical internal-combustion engine.Exhaust valve actuation device 200 periodically opens and closes outlet valve 300 when the motor normal operation.Braking running 10 can realize with the driving mechanism 100 of the integrated engine braking of motor by 50 operations of engine braking control mechanism are of the present utility model.Of the present utility model can have an off position 0 and an operating position 1 with the driving mechanism 100 of the integrated engine braking of motor.When the needs motor when normal operation 20 is converted to engine braking and operates 10, engine braking control mechanism 50 can be converted to operating position 1 from off position 0 with the driving mechanism 100 of the integrated engine braking of motor with of the present utility model.Generally, engine braking control mechanism 50 is in the position of " pass ", and of the present utility modelly can be in off position 0, of the present utility model can the separation with engine exhaust valve system 300 of this moment with the driving mechanism 100 of the integrated engine braking of motor with the driving mechanism 100 of the integrated engine braking of motor.
As shown in Figure 2, when the needs engine braking, the three-way magnetic valve 51 in the engine braking control mechanism 50 is by open-minded by the electric current of positive terminal 55 and negative terminal 57.The spool 58 of solenoid valve 51 glides, and opens oil-feed port 111, allows hydraulic fluid, and for example engine motor oil flows to the hydraulic channel between station control piston 160 and the controller.For example in fact, this hydraulic channel is included in fluid passage 211 and radial hole 212, the otch in brake rocker arm 2,102 213 and the fluid passage 214 in the pitman arm shaft 205.
As shown in Figure 3, when not needing engine braking, three-way magnetic valve 51 is closed, and moves on the spool 58 and closes oil-feed port 111, opens oil drain out 222, allows machine oil flow out.
Present embodiment is to explanation of the present utility model, rather than limits it.In fact, those skilled in the art can show to change places and in scope of the present utility model and principle the utility model made amendment and change.For instance, illustrated or certain part of functions described of concrete mechanism can be used for another concrete mechanism, and then obtains a new mechanism.Therefore, the utility model will comprise above-mentioned modification and change, if they belong to appended claim or with the suitable scope of institute's prescription.
Claims (5)
- One kind can with the driving mechanism of the integrated engine braking of motor, constitute by an outlet valve control mechanism, it is characterized in that: described outlet valve control mechanism is made of a driving force input mechanism and a driving force transfer mechanism, described driving force input mechanism is connected with the driving force transfer mechanism, be provided with an outlet valve contact jaw in the driving force transfer mechanism, described outlet valve contact jaw is connected by driving mechanism with a station control piston, be provided with a hydraulic pressure cavity volume in the driving force transfer mechanism, described station control piston is arranged in the described hydraulic pressure cavity volume, the hydraulic pressure cavity volume is connected with a controller by the fluid passage, the outlet valve contact jaw has one first station and one second station, described driving force input mechanism is made of a cam, described driving force transfer mechanism is made of a rocking arm and a pitman arm shaft, described rocking arm is arranged on the pitman arm shaft; an end of rocking arm is connected with the driving force input mechanism; described hydraulic pressure cavity volume is arranged in the other end of rocking arm; the relative position of described pitman arm shaft and cam is fixed; an end of rocking arm is positioned at the rotation round of the bump of described cam, and described station control piston has a primary importance and a second place.
- 2. as claimed in claim 1 can with the driving mechanism of the integrated engine braking of motor, it is characterized in that: described controller is made of the two-bit triplet solenoid valve.
- 3. as claimed in claim 1 can with the driving mechanism of the integrated engine braking of motor, it is characterized in that: described station control piston has return spring.
- 4. as claimed in claim 1 can with the driving mechanism of the integrated engine braking of motor, it is characterized in that: described station control piston has axially locating mechanism.
- 5. as claimed in claim 1 can with the driving mechanism of the integrated engine braking of motor, it is characterized in that: described station control piston has radial location mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920208707 CN201513210U (en) | 2009-08-31 | 2009-08-31 | Driving mechanism for engine brake and capable of being integrated with engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920208707 CN201513210U (en) | 2009-08-31 | 2009-08-31 | Driving mechanism for engine brake and capable of being integrated with engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201513210U true CN201513210U (en) | 2010-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920208707 Expired - Fee Related CN201513210U (en) | 2009-08-31 | 2009-08-31 | Driving mechanism for engine brake and capable of being integrated with engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201513210U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170472A1 (en) * | 2009-01-05 | 2010-07-08 | Zhou Yang | Integrated engine brake with mechanical linkage |
| WO2012092693A1 (en) * | 2011-01-05 | 2012-07-12 | 上海尤顺汽车部件有限公司 | Auxiliary valve actuating mechanism of engine |
| CN104265395A (en) * | 2013-07-26 | 2015-01-07 | 皆可博车辆控制***公司 | Air-activated Oil Supply Device Used For Multi-cylinder Internal Combustion Engine |
-
2009
- 2009-08-31 CN CN 200920208707 patent/CN201513210U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170472A1 (en) * | 2009-01-05 | 2010-07-08 | Zhou Yang | Integrated engine brake with mechanical linkage |
| WO2012092693A1 (en) * | 2011-01-05 | 2012-07-12 | 上海尤顺汽车部件有限公司 | Auxiliary valve actuating mechanism of engine |
| EP2662542A4 (en) * | 2011-01-05 | 2016-06-22 | Shanghai Universoon Autoparts | Auxiliary valve actuating mechanism of engine |
| US9416692B2 (en) | 2011-01-05 | 2016-08-16 | Shanghai Universoon Autoparts Co., Ltd. | Auxiliary valve actuating mechanism of engine |
| US9732643B2 (en) | 2011-01-05 | 2017-08-15 | Shanghai Universoon Autoparts Co., Ltd. | Engine valve actuation mechanism for producing a variable engine valve event |
| CN104265395A (en) * | 2013-07-26 | 2015-01-07 | 皆可博车辆控制***公司 | Air-activated Oil Supply Device Used For Multi-cylinder Internal Combustion Engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20180831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |