CN102003240B - Improved structure of engine brake device - Google Patents
Improved structure of engine brake device Download PDFInfo
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- CN102003240B CN102003240B CN 200910194869 CN200910194869A CN102003240B CN 102003240 B CN102003240 B CN 102003240B CN 200910194869 CN200910194869 CN 200910194869 CN 200910194869 A CN200910194869 A CN 200910194869A CN 102003240 B CN102003240 B CN 102003240B
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- rocking arm
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- regulating piston
- engine braking
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Abstract
The invention relates to an improved structure of an engine brake device, which comprises an exhaust valve control mechanism, wherein the exhaust valve control mechanism comprises a drive force input cam, a cam driven wheel, a rocking arm and a rocking arm shaft, the cam driven wheel is arranged at the other end of a push rod, the drive force input cam is arranged outside the cam driven wheel, the other end of the rocking arm is provided with a vertical valve gap regulating piston, a horizontal drive piston and a vertical brake plunger piston are arranged in the valve gap regulating piston, the middle of the drive piston is provided with a circular groove, the side surface of the circular groove and the side surface of the drive piston at the left side of the circular groove are used as a non working face and a working face which are in press and contact with the upper end face of the brake plunger piston, and an exhaust valve rod connecting member is arranged below the brake plunger piston. The drive force input cam is used for transferring driving force of the engine to the rocking arm periodically, the switching of two states of brake and normal work is realized by using an electromagnetic valve to control a gap between the rocking arm and the exhaust valve rod connecting member, the volume and the weight of a brake are reduced, and high oil pressure and leakage, deformation and load fluctuation caused by high oil pressure are avoided.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to the improvement structure of the braking device of motor, particularly a kind of engine braking apparatus.
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, open outlet valve when the engine piston compression stroke finishes or when approach finishing, allow compressed gas (being air during braking) to be released, the motor energy that pressurized gas absorbs in compression stroke, can not turn back to engine piston at expansion stroke subsequently, but dissipate by 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 to be disclosed by the U.S. Patent number 3220392 that comings (Cummins) provides, and is commercially very successful according to the engine braking system of this patent manufacturing.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 extraly height, weight and the cost of motor.Above-mentioned these problems are because engine braking system is used as an annex of motor, rather than constituent element of motor or integrated part cause.
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 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 to make for a long time enlarged bore piston stretch out or retract, and causes that braking system inertia is large, reaction is slow.
Summary of the invention:
The object of the present invention is to provide a kind of improvement structure of engine braking apparatus, the overhead mode that the improvement structure of described this engine braking apparatus will solve engine braking system in the prior art has increased the height of motor and the technical problem of manufacture cost, will solve simultaneously the technical problem that braking system inertia is large, reaction is slow that hydraulically powered engine brake exists.
The improvement structure of this a kind of engine braking apparatus of the present invention, consisted of by an outlet valve control mechanism, described outlet valve control mechanism is by the driving force input cam, cam follower wheel; rocking arm and pitman arm shaft consist of; rocking arm one end is provided with a vertical blind hole and a horizontal hole; be provided with the valve clearance regulating piston in the vertical blind hole of described rocking arm one end; be provided with a horizontal through hole and another vertical blind hole in the described valve clearance regulating piston; the vertical blind hole upper end in the described valve clearance regulating piston is intersected with the horizontal through hole in the described valve clearance regulating piston and is three-port structure; be provided with driven plunger in the horizontal through hole in the described valve clearance regulating piston; be provided with spool in the vertical blind hole in the described valve clearance regulating piston; described driven plunger middle part is provided with an annular groove with corresponding part, spool position; described spool upper-end surface contacts with described annular groove; be provided with liquid sealing between the interior vertical blind hole of described spool outer side surface and described valve clearance regulating piston and be connected; described cam follower wheel is arranged in the other end of rocking arm; described driving force input cam is arranged on outside the cam follower wheel, and rocking arm is arranged on the pitman arm shaft.
Further, be provided with vertically the fluid passage in the described pitman arm shaft, 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 other end is communicated with described horizontal hole.
Further, the middle part outer wall of described spool is provided with an axial grooving, and described valve clearance regulating piston lower end edge radially is fixedly installed a pin, and an end of described pin extends in the axial grooving of described spool.
Further, described horizontal through hole left part is provided with the second axial grooving, the diameter of described horizontal through hole is greater than the diameter of described driven plunger, described driven plunger the inner is provided with a horizontal blind hole, described horizontal blind hole outer side wall arranges by the 3rd grooving, and described the 3rd grooving is groove.
Further, described spool lower end is fixed with an end of spring, and the described spring the other end is fixed on the described rocking arm by screw.
Further, described horizontal through hole right output port is fixed with one and stretches out the outer spring seat of described rocking arm, be provided with another spring between described driven plunger outer end and the described spring seat, described valve clearance regulating piston bottom is fixed with the 3rd spring one end, and described the 3rd spring the other end is fixed on the rocking arm.
Further, the vertical blind hole sidewall top of described rocking arm one end is provided with along its discharge orifice radially, and described discharge orifice is communicated with the described rocking arm external space.
Further, the axial cross section of described annular groove is inner edge and is shorter than the trapezoidal of outside, it is axially vertical with described driven plunger that described annular groove is positioned at the side of described driven plunger outer end, and the side that described annular groove is positioned at described driven plunger the inner is the plane of inclination.
Further, described driving force input cam is provided with at least one convex portion on the basic circle within it.
Further, the fluid passage in the pitman arm shaft is communicated with oil-feed port or oil drain out in the three-way magnetic valve.
Working principle of the present invention 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 air discharging valve bar link is arranged on the control valve rod of engine exhaust valve.When needing motor to be converted to engine braking from normal working, by a controller to three-way magnetic valve sending action signal.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 the fluid passage in the brake rocker arm, flow to braking drive organ, oil stream is by entering in the vertical hole of valve clearance regulating piston by the grooving of driven plunger the inner and the grooving of horizontal through hole left part.Oil pressure overcomes the load of spool lower end spring, and spool is pushed away downwards.Spool is by the axial groove in it, rest on the locating stud that is fixed in the valve clearance regulating piston, its stroke is equal to or slightly greater than the side (not operation face) of annular groove on the driven plunger and the distance between the driven plunger left end outer side surface (operating surface).After spool moved down, driven plunger just can be under the oil pressure effect, and the load that overcomes driven plunger right-hand member spring moves right, and rests on the spring seat.At this moment, the upper surface of spool contacts with the outer side surface of driven plunger left end, forms the solid link, and the driving mechanism of engine braking is in operating position.One discharge orifice is arranged in the piston hole, act on the valve clearance regulating piston to avoid oil pressure.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 end face of horizontal hole under the effect of its right-hand member spring.Spool is subjected to upwards to move in the vertical hole of acting on of brake spring, gets back to off position, and namely separate with the motor normal operation position of " pass ".
The present invention and prior art compare, and its effect is actively with obvious.The present invention 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 engine work 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 oil temperature, the impact of oil pressure and air content, brake valve rises can obtain less value, reduces the requirement to engine piston and valve clearance.
Description of drawings:
Fig. 1 is the structural representation (not drawing spool and driven plunger part among Fig. 1) of the improvement structure of a kind of engine braking apparatus of the present invention.
Fig. 2 is the schematic representation that the braking drive organ in the improvement structure of a kind of engine braking apparatus of the present invention is in the off-position.
Fig. 3 is the schematic representation that the braking drive organ in the improvement structure of a kind of engine braking apparatus of the present invention is in " opening " position.
Fig. 4 is the schematic representation of the working state of fluid passage in the improvement structure of a kind of engine braking apparatus of the present invention and three-way magnetic valve.
Fig. 5 is the schematic representation of another working state of fluid passage in the improvement structure of a kind of engine braking apparatus of the present invention and three-way magnetic valve.
Embodiment:
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4 and Figure 5, the improvement structure 100 of a kind of engine braking apparatus of the present invention, by an air bleeding valve controlling organization 2002, formed, wherein, described air bleeding valve controlling organization 2002 is by driving force input cam 2302, cam follower wheel 2352, push rod, rocking arm 2102 and rocker arm shaft 205 form, the middle part of described rocking arm 2102 is arranged on rocker arm shaft 205, one end of described push rod is connected with an end of rocking arm 2102, described cam follower wheel 2352 is arranged in the other end of push rod, described driving force input cam 2302 is arranged on outside cam follower wheel 2352, in driving force input cam 2302, the excircle of the rotation round of protuberance and cam follower wheel 2352 intersects, rocking arm 2102 arranged outside have a biasing back-moving spring 1982, in described rocking arm 2102, be provided with fluid passage 214, in rocker arm shaft 205, be provided with vertically fluid passage 211, along a radius, be provided with a radial hole 212, in rocking arm 2102, be provided with an otch 213, 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 and a lateral aperture 415, described fluid passage 214 other ends and described inner connection of lateral aperture 415, the diameter of described fluid passage 214 is less than described lateral aperture 415 diameters, described lateral aperture 415 outer ends and described rocking arm 2102 end face, described vertical blind hole 260 lower ends flush with described rocking arm 2102 lower ends, described vertical blind hole 2102 upper ends and described lateral aperture 415 intersect and are three-port structure, described vertical blind hole 260 upper surfaces are higher than described lateral aperture 415, in described vertical hole 260, be provided with valve clearance regulating piston 162, between described valve clearance regulating piston 162 and described vertical hole 260, being provided with liquid sealing is connected, in described valve clearance regulating piston 162, be provided with a horizontal through hole 166 and another vertical blind hole 190, described another vertical blind hole 190 upper ends and described horizontal through hole 166 intersect and are three-port structure, in described horizontal through hole 166, be provided with driven plunger 164, in described another vertical blind hole 190, be provided with spool 160, described driven plunger 164 middle parts are provided with an annular groove, the lateral surface of described annular groove is the not operation face 145 of this arrestment mechanism, the lateral surface of driven plunger 164 left ends is the operating surface 140 of this arrestment mechanism, a radial distance 130 is arranged between described not operation face 145 and operating surface 140, the middle part outer wall of described spool 160 is provided with an axial grooving 137, between spool 160 lateral surfaces outside described axial grooving 137 two ends and described vertical hole 190, being provided with liquid sealing is connected, valve clearance regulating piston 162 lower end edges radially are fixedly installed a pin 142, one end of described pin 142 extends in the axial grooving 137 of described spool, 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 2052 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 horizontal through hole 166 left parts are provided with the second axial grooving 196, the diameter of described horizontal through hole 166 is greater than the diameter of described driven plunger 164, described driven plunger 164 the inners are provided with a horizontal blind hole, described horizontal blind hole lateral wall arranges by the 3rd grooving 180, described the 3rd grooving 180 is grooves, described spool 160 lower ends are fixed with an end of spring 177, described spring 177 other ends are fixed in described rocking arm 2102 by screw 179, certainly, spring 177 other ends also can be on valve clearance regulating piston bottom, described spool 160 upper surfaces 146 contact with described annular groove side (not operation face 145), described horizontal through hole 166 right output port are fixed with one and stretch out the outer spring base 158 of described rocking arm, between described driven plunger 164 outer ends and described spring base 158, be provided with another spring 156, the inner face of described driven plunger 164 contacts with the bottom surface 246 of described lateral aperture 415, described valve clearance regulating piston 162 bottoms are fixed with the 3rd spring 174 1 ends, described the 3rd spring 174 other ends are fixed on rocking arm 2102.
Further, described vertical blind hole 260 sidewall tops are provided with along its discharge orifice 168 radially, and described discharge orifice 168 is communicated with described rocking arm 210 external spaces, acts on the valve clearance regulating piston 162 to avoid oil pressure.
Further, the axial cross section of described annular groove is inner edge and is shorter than the trapezoidal of outside, it is axially vertical with described driven plunger that described annular groove is positioned at the side of described driven plunger outer end, and the side that described annular groove is positioned at described driven plunger the inner is the plane of inclination.
Further, described driven plunger outer end is provided with axial blind hole, described another spring 156 1 ends are arranged in the described blind hole, described spring seat 158 is the cylinder barrel shaped with annular exterior edge face, the annular exterior edge face of described spring seat is provided with location cylinder along its axial direction, and the length of described location cylinder is more than or equal to the length of the blind hole of described driven plunger outer end.Spring 156 can not depart from the time of can guaranteeing like this that driven plunger 164 moves.
Further, described spool 160 upper ends are Step Shafts, and the external diameter of described spool upper end is less than the external diameter of its lower end, and it has a cylindrical side 147.This side 147 also can be a plane.
Further, described rocking arm 2102 upper ends are provided with braking valve clearance adjusting screw 1102 by tapped hole, described braking valve clearance adjusting screw 1102 is connected with a nut 1052 after passing an end of rocking arm, described braking valve clearance adjusting screw 1102 lower ends contact with described valve clearance regulating piston 162 upper-end surfaces
Further, described driving force input cam 2302 is provided with a lug boss 232 and a lug boss 233 on the basic circle 2252 within it.
Further, described fluid passage 211 is communicated with oil-feed port 111 and oil drain out 222 in the three-way magnetic valve 51.
Concrete, the horizontal hole 415 in the rocking arm 2102 is larger than driven plunger 164, and whole like this arrestment mechanism 100 can move up and down the adjustable brake valve clearance by valve clearance adjusting screw 1102 and the 3rd spring 174.The 3rd spring 174 is fixed on the brake rocker arm 2102 by nut 173, and its effect is that whole braking drive organ 100 is upwards leaned on valve clearance adjusting screw 1102.
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.Air discharging valve bar link 116 is arranged on the control valve rod 3001 of engine exhaust valve 300.When needing motor to be converted to engine braking from normal working, by a controller (not shown) to three-way magnetic valve 51 sending action signals.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 in the horizontal hole 166 that hydraulic fluid enters into rocking arm by the otch 213 in the fluid passage 211 in the pitman arm shaft 205 and radial hole 212, the rocking arm 2102 and hydraulic channel 214, flow to braking drive organ 100, oil stream is by entering in the vertical hole 190 of valve clearance regulating piston 162 by the grooving 180 of driven plunger the inner and the grooving 196 of horizontal through hole left part.Oil pressure overcomes the load of spool 160 lower end springs 177, and spool 160 is pushed away downwards.Spool 160 is by the axial groove 137 in it, rest on the locating stud 142 that is fixed in the valve clearance regulating piston, its stroke is equal to or slightly greater than that the side of annular groove is that not operation face 145 and driven plunger left end outer side surface are the distance 130 between the operating surface 140 on the driven plunger.Spool move 160 go down after, driven plunger 164 just can be under the oil pressure effect, the load that overcomes driven plunger right-hand member spring 156 moves right, and rests on the spring seat 158.At this moment, the upper surface 146 of spool 160 is that fore side 140 contacts with the outer side surface of driven plunger left end, forms the solid link, and the driving mechanism of engine braking is in operating position shown in Figure 3.Vertically in the hole 260 discharge orifice 168 is arranged, act on the valve clearance regulating piston 162 to avoid oil pressure.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 on the left side 246 of horizontal hole 415 under the effect of its right-hand member spring 156.Spool 160 is subjected to upwards to move in the vertical hole 190 of acting on of brake spring 177, gets back to off position as shown in Figure 2, and namely separate with the motor normal operation position of " pass ".
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, be provided with another valve spring 3102 on the control valve rod, 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.Be provided with exhaust valve actuation device 200 on the valve bridge 400, 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 large convex portion 220 on the basic circle 225 within it, is installed on the exhaust valve rocker arm axle 2051 exhaust valve actuation rocking arm 210 swing types, and an end of exhaust valve actuation rocking arm 210 is provided with cam follower wheel 235.
Present embodiment is that the present invention will be 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 invention and principle the present invention 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 present invention 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 improvement structure of an engine braking apparatus, consisted of by an outlet valve control mechanism, it is characterized in that: described outlet valve control mechanism is by the driving force input cam, cam follower wheel; rocking arm and pitman arm shaft consist of; rocking arm one end is provided with a vertical blind hole and a horizontal hole; be provided with the valve clearance regulating piston in the vertical blind hole of described rocking arm one end; be provided with a horizontal through hole and another vertical blind hole in the described valve clearance regulating piston; the vertical blind hole upper end in the described valve clearance regulating piston is intersected with the horizontal through hole in the described valve clearance regulating piston and is three-port structure; be provided with driven plunger in the horizontal through hole in the described valve clearance regulating piston; be provided with spool in the vertical blind hole in the described valve clearance regulating piston; described driven plunger middle part is provided with an annular groove with corresponding part, spool position; described spool upper-end surface contacts with described annular groove; be provided with liquid sealing between the interior vertical blind hole of described spool outer side surface and described valve clearance regulating piston and be connected; described cam follower wheel is arranged in the other end of rocking arm; described driving force input cam is arranged on outside the cam follower wheel, and rocking arm is arranged on the pitman arm shaft.
2. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: be provided with vertically the fluid passage in the described pitman arm shaft, 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 other end is communicated with described horizontal hole.
3. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: the middle part outer wall of described spool is provided with an axial grooving, described valve clearance regulating piston lower end edge radially is fixedly installed a pin, and an end of described pin extends in the axial grooving of described spool.
4. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: the diameter of described horizontal through hole is greater than the diameter of described driven plunger, horizontal through hole left part in the described valve clearance regulating piston is provided with the second axial grooving, described driven plunger the inner is provided with a horizontal blind hole, described horizontal blind hole outer side wall is provided with the 3rd grooving, and described the 3rd grooving is groove.
5. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: described spool lower end is fixed with an end of spring, and the described spring the other end is fixed on the described rocking arm by screw.
6. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: described horizontal through hole right output port is fixed with one and stretches out the outer spring seat of described rocking arm, be provided with another spring between described driven plunger outer end and the described spring seat, described valve clearance regulating piston bottom is fixed with the 3rd spring one end, and described the 3rd spring the other end is fixed on the rocking arm.
7. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: the vertical blind hole sidewall top of described rocking arm one end is provided with along its discharge orifice radially, and described discharge orifice is communicated with the described rocking arm external space.
8. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: the axial cross section of described annular groove is inner edge and is shorter than the trapezoidal of outside, it is axially vertical with described driven plunger that described annular groove is positioned at the side of described driven plunger outer end, and the side that described annular groove is positioned at described driven plunger the inner is the plane of inclination.
9. the improvement structure of a kind of engine braking apparatus as claimed in claim 1, it is characterized in that: described driving force input cam is provided with at least one convex portion on the basic circle within it.
10. the improvement structure of a kind of engine braking apparatus as claimed in claim 2 is characterized in that: the fluid passage in the pitman arm shaft is communicated with oil-feed port or the oil drain out in the three-way magnetic valve.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910194869 CN102003240B (en) | 2009-08-31 | 2009-08-31 | Improved structure of engine brake device |
| PCT/US2009/069622 WO2010078280A2 (en) | 2009-01-05 | 2009-12-28 | Engine braking devices and methods |
| BRPI0922516-1A BRPI0922516B1 (en) | 2009-01-05 | 2009-12-28 | APPARATUS TO CHANGE AN INTERNAL COMBUSTION ENGINE FROM A NORMAL ENGINE OPERATION FOR AN ENGINE BRAKING OPERATION AND METHOD FOR CONVERTING AN INTERNAL COMBUSTION ENGINE FROM A NORMAL ENGINE OPERATION TO AN ENGINE BRAKING OPERATION |
| KR1020117018023A KR101290440B1 (en) | 2009-01-05 | 2009-12-28 | Engine braking devices and methods |
| RU2011132887/06A RU2479735C1 (en) | 2009-01-05 | 2009-12-28 | Device and methods for overrunning |
| EP09837091.9A EP2384396B1 (en) | 2009-01-05 | 2009-12-28 | Engine braking devices and methods |
| EP11006451.6A EP2444602B1 (en) | 2009-01-05 | 2009-12-28 | Engine braking devices and methods |
| EP11006452.4A EP2439381B1 (en) | 2009-01-05 | 2009-12-28 | Engine braking devices and methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910194869 CN102003240B (en) | 2009-08-31 | 2009-08-31 | Improved structure of engine brake device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102003240A CN102003240A (en) | 2011-04-06 |
| CN102003240B true CN102003240B (en) | 2013-01-16 |
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ID=43810902
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910194869 Expired - Fee Related CN102003240B (en) | 2009-01-05 | 2009-08-31 | Improved structure of engine brake device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102003240B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486114B (en) * | 2019-08-26 | 2020-10-02 | 东风商用车有限公司 | Integrated engine brake execution piston |
| CN111502791A (en) * | 2020-04-24 | 2020-08-07 | 东风商用车有限公司 | Horizontal plunger type variable-height valve bridge assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0458857A1 (en) * | 1989-02-15 | 1991-12-04 | Volvo Ab | A method and a device for engine braking a four stroke internal combustion engine. |
| WO1997006355A1 (en) * | 1995-08-08 | 1997-02-20 | Diesel Engine Retarders, Inc. | Internal combustion engines with combined cam and electro-hydraulic engine valve control |
| US6189504B1 (en) * | 1997-11-24 | 2001-02-20 | Diesel Engine Retarders, Inc. | System for combination compression release braking and exhaust gas recirculation |
| CN101319636A (en) * | 2008-06-03 | 2008-12-10 | 江苏大学 | Integrated valve actuating mechanism used for engine driving and braking condition, and its control method |
| CN201671676U (en) * | 2009-08-31 | 2010-12-15 | 上海尤顺汽车部件有限公司 | Improved structure of brake apparatus of engine |
-
2009
- 2009-08-31 CN CN 200910194869 patent/CN102003240B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0458857A1 (en) * | 1989-02-15 | 1991-12-04 | Volvo Ab | A method and a device for engine braking a four stroke internal combustion engine. |
| WO1997006355A1 (en) * | 1995-08-08 | 1997-02-20 | Diesel Engine Retarders, Inc. | Internal combustion engines with combined cam and electro-hydraulic engine valve control |
| US6189504B1 (en) * | 1997-11-24 | 2001-02-20 | Diesel Engine Retarders, Inc. | System for combination compression release braking and exhaust gas recirculation |
| CN101319636A (en) * | 2008-06-03 | 2008-12-10 | 江苏大学 | Integrated valve actuating mechanism used for engine driving and braking condition, and its control method |
| CN201671676U (en) * | 2009-08-31 | 2010-12-15 | 上海尤顺汽车部件有限公司 | Improved structure of brake apparatus of engine |
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| Publication number | Publication date |
|---|---|
| CN102003240A (en) | 2011-04-06 |
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