CN201581950U - Modified engine brake device - Google Patents
Modified engine brake device Download PDFInfo
- Publication number
- CN201581950U CN201581950U CN 200920208706 CN200920208706U CN201581950U CN 201581950 U CN201581950 U CN 201581950U CN 200920208706 CN200920208706 CN 200920208706 CN 200920208706 U CN200920208706 U CN 200920208706U CN 201581950 U CN201581950 U CN 201581950U
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- rocking arm
- blind hole
- braking
- engine braking
- hole
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Abstract
The utility model provides a modified engine brake device which comprises an exhaust valve control mechanism. The exhaust valve control mechanism comprises a driving force input cam, a cam driven wheel, a rocking arm and a rocking arm shaft, wherein the driving force input cam is arranged outside the cam driven wheel; a horizontal driving piston, a vertical clearance adjusting piston and a vertical braking plunger are arranged at the other end of the rocking arm; a connecting rod with concave spherical surfaces at two ends is arranged between the driving piston and the braking plunger; the convex spherical surface at the upper end of the connecting rod is matched with the concave spherical surface of the rocking arm, the convex spherical surface at the lower end of the connecting rod is matched with the concave spherical surface of the braking plunger; and an exhaust valve rod connector is arranged below the braking plunger. The driving force input cam periodically transfers the engine power to the rocking arm and utilizes the clearance between the rocking arm and the exhaust valve rod connector controlled by a solenoid valve to achieve the switching of the braking state and the normal working state. The modified engine brake device reduces the volume and the weight of the brake, prevents high oil pressure, and avoids the problems of leakage, deformation and load fluctuation caused by high oil pressure.
Description
Technical field:
The utility model relates to mechanical field, relates in particular to the modifying device of the braking device of motor, particularly a kind of engine braking.
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 is to provide a kind of modifying device of engine braking, the overhead mode that the modifying device of described this engine braking will solve engine braking system in the prior art 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.
The modifying device of this engine braking of the present utility model, constitute by an outlet valve control mechanism, described outlet valve control mechanism is by the driving force input cam; rocking arm and pitman arm shaft constitute; the middle part of described rocking arm is arranged on the pitman arm shaft; described driving force input cam mechanism is arranged on an end of rocking arm; the other end of rocking arm is provided with a vertical blind hole; described vertical blind hole lower end is provided with the valve clearance regulating piston; be provided with a horizontal through hole and another vertical blind hole in the described valve clearance regulating piston; described another vertical blind hole upper end is intersected with described horizontal through hole and is three-port structure; be provided with driven plunger in the described horizontal through hole; be provided with spool in described another vertical blind hole; described driven plunger middle and lower part radially is provided with another blind hole along it; described spool upper end is provided with axial blind hole, is provided with connecting rod in the radial blind holes of described driven plunger and in the axial blind hole of spool.
Further, be provided with the fluid passage in the described pitman arm shaft vertically, be provided with radial hole along radial direction, be provided with fluid passage in the described rocking arm, an end of described fluid passage is communicated with described radial hole, and the horizontal through hole in the other end and the described valve clearance regulating piston is communicated with.
Further, the axial blind hole bottom surface of described spool is provided with concave spherical surface, the bottom surface of another blind hole at described driven plunger middle part is concave spherical surface in another, described connecting rod two ends are provided with protruding sphere, described connecting rod lower end cooperates with described concave spherical surface, and described small end cooperates with described another concave spherical surface.
Further, described valve clearance regulating piston lower end surface contacts with described driven plunger upper side, described rocking arm upper end is provided with braking valve clearance adjusting screw by tapped hole, described braking valve clearance adjusting screw is connected with a nut after passing an end of rocking arm, and described braking valve clearance adjusting screw lower end contacts with described valve clearance regulating piston upper-end surface.
Further, described spool lower end is fixed with an end of spring, the described spring the other end by screw on described rocking arm.
Further, described spool outer side wall middle part is provided with axial grooving, and described sleeve middle part radially is fixed with straight pin along it, and described straight pin one end stretches in the described grooving.
Further, be provided with another spring between described driven plunger right-hand member and the described vertical blind hole right side wall.
Further, the diameter of described valve clearance regulating piston is less than the diameter of described vertical blind hole, described vertical blind hole top is provided with the discharge orifice that is communicated with described swing arm space outerpace, and described discharge orifice is communicated with described vertical blind hole inner space by described valve clearance regulating piston.
Further, described driving force input cam within it basic circle be provided with at least one convex portion.
Further, described fluid passage is communicated with oil-feed port and oil drain out in the three-way magnetic valve.
Working principle of the present utility model is: the driving force input cam is connected with the power take-off mechanism of motor, and the driving force input cam makes rocker arms roll under the motivational drive of motor.The outlet valve valve stem coupling member is arranged on the control valve rod of engine exhaust valve.Need motor when normal working is converted to engine braking, send actuating signal to three-way magnetic valve by a controller.Three-way magnetic valve is by open-minded by the electric current of its positive terminal and negative terminal, the spool of solenoid valve glides, open oil-feed port, machine oil is by the brake fluid networking, comprise otch and fluid passage in pitman arm shaft fluid passage and radial hole, the rocking arm, flow to braking drive organ, oil flows in the vertical blind hole of rocking arm.Oil pressure overcomes the load of driven plunger right-hand member spring, and driven plunger is pushed away to the right, and connecting rod becomes vertically, and spool moves downward under the connecting rod effect, and driving mechanism becomes operating position from off position.When not needing engine braking, the engine braking control mechanism cuts out draining, and driven plunger is not subjected to oil pressure, to moving to left, rests on the left side of horizontal hole under the effect of its right-hand member spring.Spool is got back to off position upwards moving under the effect of brake spring in vertical hole, separate with the motor normal operation.Vertically the discharge orifice at blind hole top can avoid producing in the vertical blind hole oil pressure.
The utility model and prior art compare, and its effect is actively with tangible.The utility model utilizes cam that the power of motor periodically is delivered to rocking arm, utilize the exhaust action of rocking arm operations platoon air valve, utilize the gap between electromagnetic valve rocking arm and the outlet valve drive end, realize the switching of braking and motor proper functioning two states and keep, can be integrated with motor, thereby reduce the volume and weight of engine brake, need not adopt the hydraulic braking control valve, reduced cost, reduced reaction time, the leakage that does not have high oil pressure and high oil pressure to cause, distortion and load fluctuation, brake valve rises and is not subjected to the oil temperature, the influence of oil pressure and air content, brake valve rises can obtain littler value, reduces the requirement to engine piston and valve clearance.
Description of drawings:
Fig. 1 is the structural representation that the braking drive organ of the modifying device of engine braking of the present utility model is in the off-position.
Fig. 2 is the schematic representation that the braking drive organ in the modifying device of engine braking of the present utility model is in " opening " position.
Fig. 3 is the schematic representation of the working state of fluid passage in the modifying device of engine braking of the present utility model and three-way magnetic valve.
Fig. 4 is the schematic representation of another working state of fluid passage in the modifying device of engine braking of the present utility model and three-way magnetic valve.
Embodiment:
Embodiment 1:
Such as Fig. 1; Fig. 2; Fig. 3 and shown in Figure 4; The modifying device 100 of engine braking of the present utility model; Consisted of by an air bleeding valve controlling organization 2002; Wherein, Described air bleeding valve controlling organization 2002 is by driving force input cam 2302; Cam follower wheel 2352; Rocking arm 2102 and rocker arm shaft 205 consist of; The middle part of described rocking arm 2102 is arranged on the rocker arm shaft 205; Described driving force input cam 2302 is arranged on outside the cam follower wheel 2352; The excircle of the rotation round of protuberance and cam follower wheel 2352 intersects in the driving force input cam 2302; Rocking arm 2102 arranged outside have a biasing back-moving spring 1982; Be provided with fluid passage 214 in the described rocking arm 2102; Be provided with vertically fluid passage 211 in the rocker arm shaft 205; Be provided with a radial hole 212 along a radius; Described radial hole 212 is communicated with 214 with described fluid passage; Be provided with an otch 213 in the rocking arm 210; Described otch 213 is communicated with radial hole 212 and described fluid passage 214 1 ends respectively; The other end of rocking arm 2102 is provided with a vertical blind hole 260; Described fluid passage 214 other ends are communicated with described vertical blind hole 260 sidewalls; Described vertical blind hole 260 lower ends flush with described rocking arm 2102 lower ends; Described vertical blind hole lower end is provided with sleeve; Described sleeve and described vertical blind hole tight fit; Be provided with spool 160 in the described sleeve; Described spool 160 upper ends are provided with the axial blind hole that the bottom surface is interior concave spherical surface 128; Described blind hole exit left surface is to be tilted to outer inclined-plane; Described vertical blind hole 260 middle parts are provided with driven plunger 164; End in contact on described driven plunger 164 downsides and the described sleeve; Described driven plunger 164 middle and lower parts are provided with another blind hole; The bottom surface of described another blind hole is concave spherical surface 122 in another; The right flank of described another blind hole is to be tilted to another outer inclined-plane; Be provided with the connecting rod 184 that two ends are protruding sphere between described concave spherical surface 128 and another concave spherical surface 122; Described connecting rod 184 lower ends cooperate with described concave spherical surface 128; Described connecting rod 184 upper ends cooperate with described another concave spherical surface 122; Described vertical blind hole 260 tops are provided with valve clearance regulating piston 162; Described valve clearance regulating piston 162 lower surfaces contact with described driven plunger 164 upper sides; Described rocking arm 2102 upper ends are provided with braking valve clearance adjustment screw 1102 by screwed hole; Described braking valve clearance adjustment screw 1102 is connected with a nut 1052 after passing an end of rocking arm 2102; Described braking valve clearance adjustment screw 1102 lower ends contact with described valve clearance regulating piston 162 upper surfaces; Described spool 160 lower ends are fixed with an end of spring 177; Described spring 177 other ends are fixed on the described rocking arm 2102 by screw 179; Described spool 160 upper surfaces contact with described driven plunger 164 lateral surfaces; Described spool 160 lateral walls middle part is provided with axial grooving 137; Described sleeve middle part radially is fixed with straight pin 142 along it; Described straight pin 142 1 ends stretch in the described grooving 137; Be provided with another spring 156 between described driven plunger 164 right-hand members and described vertical blind hole 260 right side walls; Described driven plunger 164 left sides contact with the left surface in described vertical hole 260; And be right against described fluid passage 214 other ends; As shown in Figure 1 this arrestment mechanism be in the off-position time, the other end opening of driven plunger 164 left side covering fluid passages 214.
Further, described another inclined-plane is parallel with described inclined-plane, and when control mechanism cut out draining, driven plunger 164 moved to left under spring 156 effects, the constraint that this moment, connecting rod 184 was subjected to sphere 128 and another sphere 122 moves to left and is tilted to the left, and relies on inclined-plane and another inclined-plane.
Further, the diameter of described valve clearance regulating piston 162 is less than the diameter of described vertical blind hole 260, described vertical blind hole 260 tops are provided with the discharge orifice 168 that is communicated with described swing arm 2102 space outerpaces, and described discharge orifice 168 is communicated with described vertical blind hole 260 inner spaces by described valve clearance regulating piston 162.
Further, described driven plunger 164 outer ends are provided with axial blind hole, and described another spring 156 1 ends are arranged in the described blind hole, and the other end of described another spring 156 is resisted against described vertical blind hole 260 sidewalls.
Further, described driving force input cam 2302 within it basic circle 2252 be provided with two convex portions 232,233.
Further, described fluid passage 211 is communicated with oil-feed port 111 and oil drain out 222 in the three-way magnetic valve 51.
The working procedure of present embodiment is: driving force input cam 2302 is connected with the power take-off mechanism (not shown) of motor, and driving force input cam 2302 shakes rocking arm 2102 under the motivational drive of motor.Outlet valve valve stem coupling member 116 is arranged on the control valve rod 3001 of engine exhaust valve 300.Need motor when normal working is converted to engine braking, send actuating signals to three-way magnetic valve 51 by a controller (not shown).Three-way magnetic valve 51 is by open-minded by the electric current of its positive terminal 55 and negative terminal 57, the spool 58 of solenoid valve glides, open oil-feed port 111, allow hydraulic fluid flow to braking drive organ 100 by the fluid passage 211 in the pitman arm shaft 205 and radial hole 212, rocking arm 2102 interior otch 213 and hydraulic channels 214, oil flows in the vertical blind hole 260 of rocking arm 2102.Oil pressure overcomes the load of driven plunger 164 right-hand member springs 156, spool 160 is pushed away downwards, spool 160 is realized guiding by the grooving 137 of its sidewall with cooperating of 142 of pins, after spool 160 moves down, driven plunger 164 just can be under the oil pressure effect, the load that overcomes spring 156 moves right, and rests on the spring seat 158.At this moment, the distance 132 of spool 160 lower ends and exhasut valve stem link 116 upper ends is eliminated, and the lower surface of spool 160 contacts with exhasut valve stem link 116, forms the solid link, and the driving mechanism of engine braking is in operating position shown in Figure 2.Small boss 232,233 motions that produced of brake cam 2302 by brake rocker arm 2102, driven plunger 164, spool 160 and exhasut valve stem link 116, are delivered to outlet valve 300, produce engine braking.When not needing engine braking, the engine braking control mechanism cuts out draining, and driven plunger 164 is not subjected to oil pressure, to moving to left, rests in the left surface in vertical hole 260 under the effect of spring 156.Spool 160 is subjected to upwards to move in the vertical hole 260 of acting on of brake spring 177, gets back to off position shown in Figure 1, separates with the motor normal operation.
In the embodiment shown in fig. 1, also be provided with another outlet valve 300 in the motor, be provided with control valve rod 3002 in this outlet valve 300, the control valve rod is provided with another valve spring 3102, valve spring 3101 and valve spring 3102 are arranged between engine cylinder cover 500 and the valve bridge 400, and valve bridge 400 makes 300 interlocks of two outlet valves.Valve bridge 400 is provided with exhaust valve actuation device 200, and exhaust valve actuation device 200 is made of exhaust valve actuation cam 230, exhaust valve actuation rocking arm 210 and valve bridge 400.Exhaust-valve cam 230 has a big convex portion 220 on the basic circle 225 within it, be installed on the exhaust valve rocker arm axle 2051 exhaust valve actuation rocking arm 210 swing types, one end of exhaust valve actuation rocking arm 210 is provided with cam follower wheel 235, and the other end of exhaust valve actuation rocking arm 210 contacts with valve bridge 400 tops.When this arrestment mechanism is in "open" state shown in Figure 2, because spool 160 stretches out downwards, the gap 132 of spool 160 lower ends and exhasut valve stem link 116 upper ends is eliminated, under kick 232,233 effects of cam 2302, spool 160 is depressed exhasut valve stem link 116, realizes exhaust brake.
Present embodiment is that the utility model is described, rather than limits it.In fact, those people that are expert at one's trade 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, as long as they belong within appended claim or the scope suitable with requirement power.
Claims (10)
1. the modifying device of an engine braking, constitute by an outlet valve control mechanism, it is characterized in that: described outlet valve control mechanism is by the driving force input cam; rocking arm and pitman arm shaft constitute; the middle part of described rocking arm is arranged on the pitman arm shaft; described driving force input cam mechanism is arranged on an end of rocking arm; the other end of rocking arm is provided with a vertical blind hole; described vertical blind hole lower end is provided with the valve clearance regulating piston; be provided with a horizontal through hole and another vertical blind hole in the described valve clearance regulating piston; described another vertical blind hole upper end is intersected with described horizontal through hole and is three-port structure; be provided with driven plunger in the described horizontal through hole; be provided with spool in described another vertical blind hole; described driven plunger middle and lower part radially is provided with another blind hole along it; described spool upper end is provided with axial blind hole, is provided with connecting rod in the radial blind holes of described driven plunger and in the axial blind hole of spool.
2. the modifying device of engine braking as claimed in claim 1, it is characterized in that: be provided with the fluid passage in the described pitman arm shaft vertically, be provided with radial hole along radial direction, be provided with fluid passage in the described rocking arm, one end of described fluid passage is communicated with described radial hole, and the horizontal through hole in the other end and the described valve clearance regulating piston is communicated with.
3. the modifying device of engine braking as claimed in claim 1, it is characterized in that: the axial blind hole bottom surface of described spool is provided with concave spherical surface, the bottom surface of the radial blind holes at described driven plunger middle part is concave spherical surface in another, described connecting rod two ends are provided with protruding sphere, described connecting rod lower end cooperates with described concave spherical surface, and described small end cooperates with described another concave spherical surface.
4. the modifying device of engine braking as claimed in claim 1, it is characterized in that: described rocking arm upper end is provided with braking valve clearance adjusting screw by tapped hole, described braking valve clearance adjusting screw is connected with a nut after passing an end of rocking arm, and described braking valve clearance adjusting screw lower end contacts with described valve clearance regulating piston upper-end surface.
5. the modifying device of engine braking as claimed in claim 1, it is characterized in that: described spool lower end is fixed with an end of spring, the described spring the other end by screw on described rocking arm.
6. the modifying device of engine braking as claimed in claim 1, it is characterized in that: described spool outer side wall middle part is provided with axial grooving, described valve clearance regulating piston middle part radially is fixed with straight pin along it, and described straight pin one end stretches in the described grooving.
7. the modifying device of engine braking as claimed in claim 1 is characterized in that: be provided with another spring between described driven plunger right-hand member and the described vertical blind hole right side wall.
8. the modifying device of engine braking as claimed in claim 1, it is characterized in that: the diameter of described valve clearance regulating piston is less than the diameter of described vertical blind hole, described vertical blind hole top is provided with the discharge orifice that is communicated with described swing arm space outerpace, and described discharge orifice is communicated with described vertical blind hole inner space by described valve clearance regulating piston.
9. the modifying device of engine braking as claimed in claim 1, it is characterized in that: described driving force input cam basic circle within it is provided with at least one convex portion.
10. the modifying device of engine braking as claimed in claim 1 is characterized in that: described fluid passage is communicated with oil-feed port and oil drain out in the three-way magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920208706 CN201581950U (en) | 2009-08-31 | 2009-08-31 | Modified engine brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920208706 CN201581950U (en) | 2009-08-31 | 2009-08-31 | Modified engine brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201581950U true CN201581950U (en) | 2010-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920208706 Expired - Lifetime CN201581950U (en) | 2009-08-31 | 2009-08-31 | Modified engine brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201581950U (en) |
Cited By (9)
| 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 |
| CN102003237B (en) * | 2009-08-31 | 2013-05-15 | 上海尤顺汽车部件有限公司 | Engine braking improving device |
| CN103470330A (en) * | 2010-05-27 | 2013-12-25 | 上海尤顺汽车部件有限公司 | Valve actuating system of engine and method for generating engine auxiliary valve lift curve |
| CN103470328A (en) * | 2010-05-27 | 2013-12-25 | 上海尤顺汽车部件有限公司 | Fixed chain type mechanism and method for producing auxiliary valve rise curve of engine |
| CN103470329A (en) * | 2010-05-27 | 2013-12-25 | 上海尤顺汽车部件有限公司 | Valve actuating system of engine and method for generating engine auxiliary valve lift curve |
| CN103835780A (en) * | 2012-11-26 | 2014-06-04 | 上海尤顺汽车部件有限公司 | Auxiliary valve motion device of engine |
| CN104279020A (en) * | 2013-07-10 | 2015-01-14 | 上海尤顺汽车部件有限公司 | Fixing chain type engine valve drive device |
| CN106640258A (en) * | 2016-12-28 | 2017-05-10 | 潍柴动力股份有限公司 | Engine compression release type braking system and engine |
-
2009
- 2009-08-31 CN CN 200920208706 patent/CN201581950U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100170472A1 (en) * | 2009-01-05 | 2010-07-08 | Zhou Yang | Integrated engine brake with mechanical linkage |
| CN102003237B (en) * | 2009-08-31 | 2013-05-15 | 上海尤顺汽车部件有限公司 | Engine braking improving device |
| CN103470330A (en) * | 2010-05-27 | 2013-12-25 | 上海尤顺汽车部件有限公司 | Valve actuating system of engine and method for generating engine auxiliary valve lift curve |
| CN103470328A (en) * | 2010-05-27 | 2013-12-25 | 上海尤顺汽车部件有限公司 | Fixed chain type mechanism and method for producing auxiliary valve rise curve of engine |
| CN103470329A (en) * | 2010-05-27 | 2013-12-25 | 上海尤顺汽车部件有限公司 | Valve actuating system of engine and method for generating engine auxiliary valve lift curve |
| US9416692B2 (en) | 2011-01-05 | 2016-08-16 | Shanghai Universoon Autoparts Co., Ltd. | Auxiliary valve actuating mechanism of engine |
| 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 |
| US9732643B2 (en) | 2011-01-05 | 2017-08-15 | Shanghai Universoon Autoparts Co., Ltd. | Engine valve actuation mechanism for producing a variable engine valve event |
| CN103835780A (en) * | 2012-11-26 | 2014-06-04 | 上海尤顺汽车部件有限公司 | Auxiliary valve motion device of engine |
| CN103835780B (en) * | 2012-11-26 | 2020-03-24 | 上海尤顺汽车部件有限公司 | Auxiliary valve motion device of engine |
| CN104279020A (en) * | 2013-07-10 | 2015-01-14 | 上海尤顺汽车部件有限公司 | Fixing chain type engine valve drive device |
| CN104279020B (en) * | 2013-07-10 | 2017-11-24 | 上海尤顺汽车部件有限公司 | A kind of solid chain type engine valve actuator |
| CN106640258A (en) * | 2016-12-28 | 2017-05-10 | 潍柴动力股份有限公司 | Engine compression release type braking system and engine |
| CN106640258B (en) * | 2016-12-28 | 2019-05-28 | 潍柴动力股份有限公司 | A kind of engine compresses release type braking system and engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100915 Effective date of abandoning: 20090831 |
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| RGAV | Abandon patent right to avoid regrant |