CN104358600A - Engine valve motion conversion device - Google Patents
Engine valve motion conversion device Download PDFInfo
- Publication number
- CN104358600A CN104358600A CN201410632591.4A CN201410632591A CN104358600A CN 104358600 A CN104358600 A CN 104358600A CN 201410632591 A CN201410632591 A CN 201410632591A CN 104358600 A CN104358600 A CN 104358600A
- Authority
- CN
- China
- Prior art keywords
- roller
- roller shaft
- piston
- engine valve
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses an engine valve motion conversion device. The engine valve motion conversion device comprises a camshaft, a roller, a roller shaft and a roller shaft box body; the camshaft is provided with more than two cams; profile curves of any two cams are different; the roller shaft is arranged in the roller shaft box body; a roller is rotationally arranged on the roller shaft; the length of the roller shaft in the roller shaft box body is greater than the axial length of the roller; the roller and the roller shaft are an axial sliding pair; the roller has more than two axial positions on the roller shaft; a roller axial driving mechanism moves the roller on the roller shaft, the connection between the roller and different cams is switched and corresponding engine valve motion is generated; the roller axial driving mechanism is integrated in the roller shaft box body or arranged outside the roller shaft box body. The engine valve motion conversion device is simple and compact in structure, easy to manufacture and assemble and wide in application range; the load is transmitted in a mechanical connection mode, and defects of hydraulic loading of the traditional engine brake are overcome.
Description
Technical field:
The present invention relates to mechanical field, particularly relate to engine valve actuations field, particularly a kind of engine valve movement conversion equipment.
Background technique:
In prior art, the conventional ignition valve actuation technology of motor is behaved and is known altogether, its application history of existing more than 100 year.But due to motor discharge and the extra demand of engine braking, increasing motor, except conventional ignition valve motion, also needs other valve motion, as the valve motion of EGR and the valve motion of engine braking.Sometimes in order to increase fuel oil benefit, the valve of some cylinder of motor needs to close completely (valve motion is lost completely or eliminated), when closing cylinder except eliminating valve motion, also stops to in-cylinder injection fuel oil.
In order to obtain variable valve movements, such as the valve motion that two kinds different, people often need outside the valve actuating mechanism of conventional ignition, to increase auxiliary valve driving mechanism, as rocking arm etc., structure is all very complicated with control, and employing is mostly the valve that hydraulic type opens motor.
Summary of the invention:
The object of the present invention is to provide a kind of engine valve movement conversion equipment, described this engine valve movement conversion equipment will solve variable valve movements structure in prior art and control procedure is complicated, hydraulic driving mode reliability and the limited technical problem of poor durability, application.
Engine valve movement conversion equipment of the present invention, comprise camshaft, roller, roller shaft, roller shaft casing and roller axial actuating mechanism, wherein, described camshaft is arranged the cam of two or more number, cam described in any one has a profilogram all separately, all there are differences between any two profilograms, described roller shaft is arranged in described roller shaft casing, be arranged on roller shaft described roller rotary type, the length of roller shaft in roller shaft casing is greater than the axial length of roller, axial sliding pair is also set between roller and roller shaft, roller has the axial position of two or more number on roller shaft, described roller axial actuating mechanism is integrated within roller shaft casing or is arranged on outside roller shaft casing, when roller axial actuating mechanism is integrated within roller shaft casing, roller axial actuating mechanism follows roller shaft bin movement, when roller axial actuating mechanism is arranged on outside roller shaft casing, the motion of roller shaft casing is independent of outside roller axial actuating mechanism, roller axial actuating mechanism is connected with roller.
Further, camshaft is parallel with roller shaft, and roller each axial position on roller shaft is only connected with a cam.
Further, roller axially moves by described roller axial actuating mechanism on roller shaft, switches the connection between roller and any one cam, utilizes the corresponding profilogram of cam to produce corresponding engine valve movement.
Further, described roller axial actuating mechanism comprises spring-piston mechanism and a roller shift fork, described spring-piston mechanism comprises sliding type and is enclosed within piston on a cylindrical body, fluid passage is had in described cylindrical body, return spring is mounted with outside described piston, one end of described roller shift fork comprises two spaced fork pin, groove or hole is provided with separately in two described fork pin, roller shaft is through the groove in two fork pin or hole, roller is between two fork pin, and the other end of roller shift fork is connected with described piston.
Further, one end of roller shaft casing is provided with breach, and described roller shaft is arranged in described breach.
Further, described camshaft is arranged three cams, roller has three axial positions on roller shaft, described roller axial actuating mechanism moves between three axial positions of roller on roller shaft, switch the connection between roller and three cams, produce three kinds of corresponding engine valve movement.
Further, described roller axial actuating mechanism comprises spring-piston mechanism and a roller shift fork, described spring-piston mechanism comprises a piston and two springs, piston is placed in piston hole slidably, two described springs are placed in the two ends of piston respectively, fluid passage is respectively arranged with in the piston hole corresponding with piston two ends, one end of described roller shift fork comprises two spaced fork pin, groove or hole is provided with separately in two described fork pin, roller shaft is through the groove in two fork pin or hole, tappet roller is between two fork pin, the other end of roller shift fork is connected with described piston.
Further, roller shaft casing is connected with a biasing mechanism, and described biasing mechanism comprises spring, and the roller in roller shaft casing and the cam on camshaft separate by described spring.
Further, described roller shaft casing is made up of the rocking arm of motor.
Further, described roller shaft casing is the cam follower of motor.
Further, described cam comprises the cam for engine ignition, the cam for engine braking, the cam closing cylinder for motor and the cam opened and closed for motor.
Working principle of the present invention is: when needing other running running of the conventional ignition of motor being converted to motor, open the valve motion control mechanism of motor, roller axial actuating mechanism moves between the axially different position of roller on roller shaft, switch roller and the connection between different cam, produce different engine valve movement.
The present invention compares with prior art, and its effect is actively with obvious.The present invention, by the axial position of shifting roller on roller shaft, realizes the conversion of different engine valve movement, has the advantages such as simple and compact for structure, manufacture assembling is easy and be widely used.Because different cams is separate, respective performance can be optimized.The present invention, by mechanical connection manner transmitted load, eliminates traditional engine brake and adopts the high oil pressure of hydraulic type carrying generation, high distortion and the defect such as high-leakage and hydraulic jack or failure mode.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram (side view) of the engine valve actuator adopted in the embodiment 1 of engine valve movement conversion equipment of the present invention.
Fig. 2 is the schematic diagram of roller axial actuating mechanism when roller is in the first axial position (overlooking part sectioned view) adopted in the embodiment 1 of engine valve movement conversion equipment of the present invention.
Fig. 3 is the schematic diagram of roller axial actuating mechanism when roller is in the second axial position (overlooking part sectioned view) adopted in the embodiment 1 of engine valve movement conversion equipment of the present invention.
Fig. 4 is the schematic diagram (overlook part sectioned view) of roller axial actuating mechanism when roller is in the 3rd axial position adopted in the embodiment 1 of engine valve movement conversion equipment of the present invention.
Fig. 5 is the schematic diagram of roller axial actuating mechanism when roller is in the first axial position (overlooking part sectioned view) adopted in the embodiment 2 of engine valve movement conversion equipment of the present invention.
Fig. 6 is the schematic diagram of roller axial actuating mechanism when roller is in the second axial position (overlooking part sectioned view) adopted in the embodiment 2 of engine valve movement conversion equipment of the present invention.
Embodiment:
Embodiment 1:
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are used for describing the embodiment 1 of engine valve movement conversion equipment of the present invention.Fig. 1 is the schematic diagram (side view) of the engine valve actuator adopted in the embodiment 1 of engine valve movement conversion equipment of the present invention.Valve actuator 200(explanation is here applicable to intake valve actuator and exhaust valve actuator simultaneously) comprise cam (as conventional ignition cam 230 and engine braking cam 2301 etc.), roller 235 and roller shaft 231.Roller 235 except can rotating on roller shaft 231, can also move axially (Fig. 2 and Fig. 3) along roller shaft 231, the present embodiment has three different cams 230,2301 and 2302(for example, conventional ignition cam 230, motor close cylinder cam 2301 and engine braking cam 2302).In general, these cams have different lifts and phase place.Such as motor closes only identical with an interior basic circle size cylindrical body of cylinder cam 2301, does not produce any motion.But these three cams are positioned on same camshaft 225, mutually adjoin and have identical or roughly the same basic circle.Valve actuator 200 also comprises rotary type and is placed in rocking arm 210 on pitman arm shaft 205.Oil supply gallery 211 is had in pitman arm shaft 205.Rocking arm 210 acts on (what show is single valve, but the present invention is equally applicable to the motor of dual valve, but needs during two valves to increase air valve bridge) on engine valve 301 here by valve clearance controlling mechanism.Valve 301 is biased on the valve seat 320 of engine cylinder-body 500 by valve spring 311, stops gas to flow between engine cylinder and air flue 600.Valve clearance controlling mechanism comprises valve clearance adjusting screw 110, locking nut 105 and resemble foot 114.
Fig. 2, Fig. 3 and Fig. 4 are that the roller axial actuating mechanism 100 adopted in the embodiment 1 of engine valve movement conversion equipment of the present invention is in the first axial position at roller 235 respectively, the schematic diagram (overlooking part sectioned view) when the second axial position and the 3rd axial position.The rocking arm 210 that rocking arm 210(shows here also can be the cam follower of push rod engine, the present invention is referred to as roller shaft casing) one end of cam is provided with a breach, a roller shaft 231 is provided with in breach, roller shaft 231 is provided with a roller 235 rotary type, roller 235 except can rotating on roller shaft 231, can also move axially (sliding pair) along roller shaft 231, the length of roller shaft 231 in breach is greater than the axial length of roller 235, roller 235 has first axial position (Fig. 2) on roller shaft 231, second axial position (Fig. 3) and the 3rd axial position (Fig. 4).Be provided with a roller axial actuating mechanism 100 in rocking arm (roller shaft casing) 210, it is changed between the axially different position of roller 235 on roller shaft by a roller shift fork 236.
One end of roller shift fork 236 comprises two spaced fork pin, in two fork pin, porose or groove 238 and 239 is set separately, roller shaft 231 is through the hole in two fork pin or groove 238 and 239, roller 235 is between two fork pin, the other end 237 of roller shift fork 236 is connected with roller axial actuating mechanism 100, and the mode of connection can be various.Roller axial actuating mechanism 100 comprises a piston 164, piston 164 is arranged in piston hole 260, the axis of piston hole 260 and the parallel to an axis of roller shaft 231, the two ends of piston hole 260 are respectively arranged with fluid passage 101 and 102, are respectively arranged with spring 156 and 177 between the two ends of piston 164 and two of piston hole end faces.Piston 164, under the effect of two springs 156 and 177 at its two ends, is in the middle position of balance, and also with regard to the first axial position shown in Fig. 2, roller 235 is connected with the cam (as conventional ignition cam) 230 of central authorities.When piston 164 is subject to the active force of fluid (machine oil as motor) near the side (in figure right side) of fluid passage 102, hydrodynamic pressure, as oil pressure, piston 164 is moved to the left in piston hole 260 the second axial position as shown in Figure 3, roller 235 is connected with the cam (as motor closes cylinder cam) 2301 on the left side.When piston 164 is subject to the active force of fluid (machine oil as motor) near the side (in figure left side) of fluid passage 101, hydrodynamic pressure, as oil pressure, piston 164 is moved right in piston hole 260 the 3rd axial position as shown in Figure 4, roller 235 is connected with the cam (as engine braking cam) 2302 on the right.
Here, the connecting end 237 of roller shift fork 236 is positioned at the annular groove 126 of piston 164, has the guiding groove 270 of connecting end 237, be set to elastic packing or soft seal between connecting end 237 and guiding groove 270 in rocking arm 210.The roller shift fork 136 that moves through of piston 164 passes to roller 235.Preferably make three different cams have identical or roughly the same interior basic circle during design, and allow the trend having between roller 235 with cam and separate, on rocking arm, such as increase bias spring 198(Fig. 1).
Notice that above-mentioned description is applicable to exhaust valve and intake valve simultaneously and opens single valve and the driving of opening dual valve.
Embodiment 2:
Fig. 5 and Fig. 6 is used for describing the embodiment 2 of engine valve movement conversion equipment of the present invention.The main distinction of the present embodiment and above-described embodiment 1 has 2 points.One be roller axial actuating mechanism 100 not within roller shaft casing (rocking arm) 210 (not with rocker motion), but outside roller shaft casing (rocking arm) 210 (with rocker motion have nothing to do).Two is that roller 235 only has two axial positions, so cam also only has two, such as conventional ignition cam 230 and engine braking cam 2302.
The roller axial actuating mechanism of the present embodiment comprises spring-piston mechanism 100 and roller shift fork 236. springs-piston mechanism 100 and comprises sliding type and be enclosed within piston 164 on a cylindrical body 162, there is fluid passage 197 in cylindrical body 162, outside piston 164, be mounted with return spring 156.One end of roller shift fork 236 comprises two spaced fork pin, groove or hole 238 and 239 is provided with separately in two fork pin, roller shaft 231 is through the groove in two fork pin or hole 238 and 239, roller 235 is between two fork pin, and the other end 237 of roller shift fork 236 is connected with the piston 164 of roller axial actuating mechanism.Here cylindrical body 162 and spring seat 158 are all fixed on the engine, do not move with roller shaft casing (rocking arm) 210.
Under normal conditions, piston 164 and roller shift fork 236 are pushed to left side by return spring 156, and roller 235 is biased in the first axial position (Fig. 5) on roller shaft 231, is connected with conventional ignition cam 230, produce the conventional ignition running of motor.When needing the braking running running of the conventional ignition of motor being converted to motor, open the valve motion control mechanism of motor, way roller axial actuating mechanism 100 provides driving force, fluid, as engine motor oil, enter the fluid passage 197 in cylindrical body 162 and the cavity volume 152 in piston 164, the active force of oil pressure counter spring 156, piston 164 and roller shift fork 236 are pushed to right side, roller moves to the second axial position (Fig. 6) from the first axial position, be connected with brake cam 2302, by the Movement transmit of brake cam 2302 to the valve of motor, produce the valve motion of engine braking.
Above-mentioned explanation contains different embodiments, and this should not be regarded as limitation of the scope of the invention, but representatively concrete illustrations more of the present invention, other differentiation many all likely therefrom produce.For example, the engine valve movement conversion equipment shown here, not only can be used for overhead cam engine, also can be used for push rod/pushing type motor; Not only can be used for driving exhaust valve, also can be used to drive intake valve.
In addition, the roller axial actuating mechanism shown here can be not only piston and spring mechanism, also can be other mechanism, as the combination of hydraulic pressure, pneumatic, the mechanism such as electromagnetism, machinery and said mechanism; Not only can being integrated in roller shaft casing (as rocking arm), also can being positioned at (as fixed on the engine) outside roller shaft casing.
Therefore, scope of the present invention should not decided by above-mentioned concrete illustration, but is decided by affiliated claim and the suitable power of law thereof.
Claims (11)
1. an engine valve movement conversion equipment, comprise camshaft, roller, roller shaft, roller shaft casing and roller axial actuating mechanism, it is characterized in that: the cam described camshaft being arranged two or more number, cam described in any one has a profilogram all separately, all there are differences between any two profilograms, described roller shaft is arranged in described roller shaft casing, be arranged on roller shaft described roller rotary type, the length of roller shaft in roller shaft casing is greater than the axial length of roller, axial sliding pair is also set between roller and roller shaft, roller has the axial position of two or more number on roller shaft, described roller axial actuating mechanism is integrated within roller shaft casing or is arranged on outside roller shaft casing, when roller axial actuating mechanism is integrated within roller shaft casing, roller axial actuating mechanism follows roller shaft bin movement, when roller axial actuating mechanism is arranged on outside roller shaft casing, the motion of roller shaft casing is independent of outside roller axial actuating mechanism, roller axial actuating mechanism is connected with roller.
2. engine valve movement conversion equipment as claimed in claim 1, is characterized in that: camshaft is parallel with roller shaft, and roller each axial position on roller shaft is only connected with a cam.
3. engine valve movement conversion equipment as claimed in claim 1, it is characterized in that: roller axially moves by described roller axial actuating mechanism on roller shaft, switch the connection between roller and any one cam, utilize the corresponding profilogram of cam to produce corresponding engine valve movement.
4. engine valve movement conversion equipment as claimed in claim 1, it is characterized in that: described roller axial actuating mechanism comprises spring-piston mechanism and a roller shift fork, described spring-piston mechanism comprises sliding type and is enclosed within piston on a cylindrical body, fluid passage is had in described cylindrical body, return spring is mounted with outside described piston, one end of described roller shift fork comprises two spaced fork pin, groove or hole is provided with separately in two described fork pin, roller shaft is through the groove in two fork pin or hole, roller is between two fork pin, the other end of roller shift fork is connected with described piston.
5. engine valve movement conversion equipment as claimed in claim 1, it is characterized in that: one end of roller shaft casing is provided with breach, described roller shaft is arranged in described breach.
6. engine valve movement conversion equipment as claimed in claim 1, it is characterized in that: described camshaft is arranged three cams, roller has three axial positions on roller shaft, described roller axial actuating mechanism moves between three axial positions of roller on roller shaft, switch the connection between roller and three cams, produce three kinds of corresponding engine valve movement.
7. engine valve movement conversion equipment as claimed in claim 1, it is characterized in that: described roller axial actuating mechanism comprises spring-piston mechanism and a roller shift fork, described spring-piston mechanism comprises a piston and two springs, piston is placed in piston hole slidably, two described springs are placed in the two ends of piston respectively, fluid passage is respectively arranged with in the piston hole corresponding with piston two ends, one end of described roller shift fork comprises two spaced fork pin, groove or hole is provided with separately in two described fork pin, roller shaft is through the groove in two fork pin or hole, tappet roller is between two fork pin, the other end of roller shift fork is connected with described piston.
8. the engine valve movement conversion equipment as described in claims 1 or 2 or 3 or 4, it is characterized in that: roller shaft casing is connected with a biasing mechanism, described biasing mechanism comprises spring, and the roller in roller shaft casing and the cam on camshaft separate by described spring.
9. the engine valve movement conversion equipment as described in claims 1 or 2 or 3 or 4, is characterized in that: described roller shaft casing is made up of the rocking arm of motor.
10. the engine valve movement conversion equipment as described in claims 1 or 2 or 3 or 4, is characterized in that: described roller shaft casing is the cam follower of motor.
11. engine valve movement conversion equipments as described in claims 1 or 2 or 3 or 4, is characterized in that: described cam comprises the cam for engine ignition, the cam for engine braking, the cam closing cylinder for motor and the cam opened and closed for motor.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410632591.4A CN104358600A (en) | 2014-11-10 | 2014-11-11 | Engine valve motion conversion device |
| EP15850672.5A EP3207226A4 (en) | 2014-10-15 | 2015-05-21 | Engine braking method and system |
| PCT/IB2015/001625 WO2016059456A1 (en) | 2014-10-15 | 2015-05-21 | Engine braking method and system |
| US15/517,957 US20170241305A1 (en) | 2014-10-15 | 2015-05-21 | Engine Braking Method and System |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628319 | 2014-11-10 | ||
| CN201410628319.9 | 2014-11-10 | ||
| CN201410632591.4A CN104358600A (en) | 2014-11-10 | 2014-11-11 | Engine valve motion conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104358600A true CN104358600A (en) | 2015-02-18 |
Family
ID=52525897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410632591.4A Pending CN104358600A (en) | 2014-10-15 | 2014-11-11 | Engine valve motion conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104358600A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715323A (en) * | 2016-03-25 | 2016-06-29 | 上海尤顺汽车部件有限公司 | Engine valve movement switching mechanism |
| WO2017162182A1 (en) * | 2016-03-25 | 2017-09-28 | 上海尤顺汽车部件有限公司 | Multifunctional engine brake |
| CN110080849A (en) * | 2019-05-21 | 2019-08-02 | 姬腾飞 | The camshaft and valve actuator of engine |
| CN114033560A (en) * | 2021-08-02 | 2022-02-11 | 苏州三林万腾汽车科技有限公司 | Grouping control method of engine variable valve device and engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278281A (en) * | 2006-03-17 | 2007-10-25 | Nissan Motor Co Ltd | Valve gear of engine |
| US20110271922A1 (en) * | 2010-05-06 | 2011-11-10 | Hyundai Motor Company | Variable valve lift apparatus |
| CN202348365U (en) * | 2011-11-15 | 2012-07-25 | 中国嘉陵工业股份有限公司（集团） | Engine valve lift variable mechanism |
| CN104100324A (en) * | 2013-04-03 | 2014-10-15 | 重庆长安汽车股份有限公司 | Rocker arm type two-stage variable valve lift mechanism |
-
2014
- 2014-11-11 CN CN201410632591.4A patent/CN104358600A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278281A (en) * | 2006-03-17 | 2007-10-25 | Nissan Motor Co Ltd | Valve gear of engine |
| US20110271922A1 (en) * | 2010-05-06 | 2011-11-10 | Hyundai Motor Company | Variable valve lift apparatus |
| CN202348365U (en) * | 2011-11-15 | 2012-07-25 | 中国嘉陵工业股份有限公司（集团） | Engine valve lift variable mechanism |
| CN104100324A (en) * | 2013-04-03 | 2014-10-15 | 重庆长安汽车股份有限公司 | Rocker arm type two-stage variable valve lift mechanism |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715323A (en) * | 2016-03-25 | 2016-06-29 | 上海尤顺汽车部件有限公司 | Engine valve movement switching mechanism |
| WO2017162182A1 (en) * | 2016-03-25 | 2017-09-28 | 上海尤顺汽车部件有限公司 | Multifunctional engine brake |
| CN105715323B (en) * | 2016-03-25 | 2019-06-28 | 上海尤顺汽车部件有限公司 | A kind of engine valve movement switching mechanism |
| US10550740B2 (en) | 2016-03-25 | 2020-02-04 | Shanghai Universoon Autoparts Co., Ltd. | Multifunctional engine brake |
| CN110080849A (en) * | 2019-05-21 | 2019-08-02 | 姬腾飞 | The camshaft and valve actuator of engine |
| CN110080849B (en) * | 2019-05-21 | 2020-07-14 | 姬腾飞 | Camshaft and valve drive device of engine |
| WO2020233508A1 (en) * | 2019-05-21 | 2020-11-26 | Ji Tengfei | Engine camshaft and valve drive apparatus |
| CN114033560A (en) * | 2021-08-02 | 2022-02-11 | 苏州三林万腾汽车科技有限公司 | Grouping control method of engine variable valve device and engine |
| CN114033560B (en) * | 2021-08-02 | 2023-08-18 | 苏州三林万腾汽车科技有限公司 | Grouping control method of variable valve device of engine and engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6764497B2 (en) | Linkage between auxiliary motion source and main motion load path in internal combustion engine | |
| CN104454178A (en) | Engine braking method | |
| RU2770373C2 (en) | Cam mechanism with pusher | |
| CN104358600A (en) | Engine valve motion conversion device | |
| CN101784759A (en) | Internal combustion engine valve drive switching device | |
| CN104314636A (en) | Engine braking device | |
| CN104314633B (en) | Variable valve driving mechanism of engine | |
| CN104712396A (en) | Engine braking device | |
| US9625050B2 (en) | Engine valve actuation system | |
| CN204212827U (en) | Engine valve movement conversion equipment | |
| CN105715323B (en) | A kind of engine valve movement switching mechanism | |
| CN204476493U (en) | Duplicated crank engine braking apparatus | |
| EP3434870A1 (en) | Multifunctional engine brake | |
| JP6299741B2 (en) | Variable length connecting rod and variable compression ratio internal combustion engine | |
| CN104454066A (en) | Continuous and variable lift driver | |
| US10746107B2 (en) | Variable compression ratio reciprocating piston engine | |
| CN204163782U (en) | Engine braking apparatus | |
| US10830231B2 (en) | Positive drive actuated valve for reciprocating compressor and method | |
| GB2543413A (en) | Valve actuating apparatus for an internal combustion engine | |
| JP2014510874A (en) | Valve train and valve timing adjustment method | |
| CN204476492U (en) | Engine braking apparatus | |
| WO2019130364A1 (en) | Control, driving and checking system for machine valves | |
| CN204140153U (en) | The variable valve actuation of motor | |
| CN205445713U (en) | Engine valve conversion of motion mechanism | |
| CN104712397A (en) | Combined rocker engine braking device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |