CN105392970A - System for performing an engine braking procedure based on decompression events for a 4-stroke cycle engine - Google Patents
System for performing an engine braking procedure based on decompression events for a 4-stroke cycle engine Download PDFInfo
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- CN105392970A CN105392970A CN201480030911.7A CN201480030911A CN105392970A CN 105392970 A CN105392970 A CN 105392970A CN 201480030911 A CN201480030911 A CN 201480030911A CN 105392970 A CN105392970 A CN 105392970A
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- Prior art keywords
- cylinder
- cam curve
- engine
- valve
- decompression
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/08—Shape of cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0273—Multiple actuations of a valve within an engine cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
System for performing an engine braking procedure based on decompression events for a 4-stroke cycle engine, the engine comprising at least a cylinder having an inlet pipe and an outlet pipe, cylinder inlet and outlet valves and control means for controlling a displacement of said cylinder valves. The system performs a first compression phase (B-II) followed by a first decompression event (B-II') and, in succession, a sucking phase (B-III) from the outlet pipe and a second compression phase (B-IV) followed by a second decompression event (B-IV'). The proposed system intents to realize a 2- stroke like engine braking for a 4-stroke engine by a special exhaust lift profile in combination with the standard inlet of this 4-stroke engine.
Description
Technical field
The present invention relates to a kind of for the engine braking system based on the decompression behavior of 4-stroke cycle engine.
Background technique
Engine braking system for 4-stroke cycle engine is well-known.
A design of braking system is based on compression-decompression behavior.In fact, during compression stage, suppress fuel spray and compress fresh air.When piston reaches upper dead center (TDC), drain tap is opened, before the energy received during compression stage being returned to piston at pressurized air (serving as spring), discharge pressurized air.Therefore, engine compresses energy has been dissipated as braking force.
Multiple in order to make the system of engine braking be known.In addition, because the high complexity relevant with the curve (profile, profile) of cam, some in them can not be applied.
Usually, for a complete circulation, only perform a braking state.In 4-two-stroke engine, complete cycle refers to when bent axle has turned two whole circles, namely 720 degree time.
For complete cycle, it is known that the strategy of two second compression-decompression behavior makes engine braking efficiency double.In this case, the motor that this braking strategy is similar to 2-stroke is effective.Due to the complexity be associated with the cam curve based on 4-two-stroke engine, so this strategy is not used at present.
Summary of the invention
Therefore, main purpose of the present invention is to provide a kind of system of the 2-stroke braking strategy for easily realizing.
The invention enables and can realize similar 2-stroke-engine braking in a simple and effective way.
Arrange the special exhaust lift profiles combined with standard entrance curve to brake to realize similar 2-two-stroke engine in 4-two-stroke engine.
In this article, " standard " means that the cam curve controlling air intake valve is completely constant relative to " starting " pattern of motor.In addition, the concept of standard also means that the present invention and valve keep crack those special applications being called exhaust air type (bleedertype) to have nothing to do.In contrast, the present invention be directed to the improvement of traditional scheme, wherein valve is closed completely when closedown.
Therefore, due to the present invention, bent axle often rotates a circle all can perform compression-decompression behavior (compression-decompressionevent).Particularly, decompression behavior is performed at each TDC place.
According to the preferred embodiment of the present invention, braking strategy is realized, " the INA cam displacement method (INAcamshiftingmethod) " of Dare (AndreasNendel) in nobert Buddhist nun thatch (NorbertNitz), Harald Ai Erdete (HaraldElendt), Arndt Lay graceful (ArndtIhlemann), Andreas in such as 2010 Schaeffler seminar (SchaefflerSymposium) by performing cam displacement method.
INA cam displacement method is based on the sleeve with at least two cam curves.Sleeve can slide axially on standard shaft, and it is forced to rotate together with standard shaft simultaneously.
Control flume on sleeve cooperates with a cam pin and controls sliding axially of sleeve, and this cam pin is supported by live spindle, and this live spindle is touch controls groove tangentially.
The adjacent part that method of the present invention is included in exhaust sleeve is arranged the step of two or more exhaust cam curves, and the step that sleeve is axially shifted on standard shaft, so that exhaust cam curve is enable to perform two decompression behaviors of braking process.
According to above-mentioned paper, the concept of " adjacent part " is clearly: multiple cam curve is limited to the adjacent of sleeve and annularly in continuous print part and along the longitudinal direction extension direction of sleeve.
According to another implementation of the invention, 2-stroke braking process is performed by the threedimensional cam with different curve from axially displaced on standard shaft.The example of this solid cam has been shown in EP0208663.
In addition, a part of the present invention is the method using axially displaced cam curve in engine braking process.
Preferably, implementing this method is to perform engine brake operation in heavy type and commerial vehicle.
The object of these and other is realized by appended claim, and these claims form the constituent element of this specification.
Accompanying drawing explanation
Below reading with reference to accompanying drawing only with exemplary illustration and the mode of non-limiting example provide detailed description, can know comprehensively understand the present invention, wherein:
-Fig. 1 shows the four-stage of the standard operation conditions of 4-stroke IC engine and comparing between braking conditions according to the present invention;
Comparison between-Fig. 2 shows based on the same condition of Fig. 1 of cam angle degree.The figure shows the example of standard deliveries curve and realization exhaust lift needed for 2-stroke brake operating of the present invention.
The parts that reference character identical in figure is identical with letter representation or functionally equivalent.
Embodiment
According to the present invention, during brake operating, by the control that at least one realizes engine valve according to the exhaust cam curve that cam displacement method carries out changing (namely by axially shiftable sleeve on standard shaft, so that can form different cam curves).
According to the preferred embodiment of the present invention, for each complete circulation, namely for each 720 degree of bent axle, twice decompression behavior is provided by identical exhaust cam curve, and one or more drain tap keeps closing completely in all the other times, sole exception, performs extra expiratory phase B-III by this one or more drain tap, as disclosed below.
Understand the present invention in order to clear, during braking process, the first compression stage overlapped with the standard compression stage, and namely when the engine is driven, even if during braking process, motor is pind down (drag) and stops sparger burner oil.
First decompression behavior B-II ' approximately occurs in TDC place.Preferably, before piston arrives TDC, drain tap is opened a little, with release pressure.
According to the present invention, after the first compression behavior B-II ', drain tap stays open, (this is contrary with the behavior of standard (starting) valve), so that allow same piston to suck air B-III from outlet pipe.
In the second lift stage of piston, namely 4-two-stroke engine circulation four-stage F-IV (motor starts), drain tap be open so that evict waste gas from.In contrast, according to the present invention, in the second lift stage in brake operating stage, drain tap keeps closing so that carry out the second compression stage, and next the second compression stage is the second decompression behavior.
As what illustrate above, " closedown " refers to " closing completely ", instead of partly closes as in exhaust scheme.
It is clear that the intake cam lifting curve of air intake valve is completely constant relative to standard cycle (namely motor is in and starts the circulation of state).
On the contrary, according to the present invention, described one or more drain tap stayed open in second decline stage (i.e. the phase III B-III of 4-two-stroke engine circulation) of piston, and (4-two-stroke engine circulation fourth stage) keeps closing during the second lift stage B-IV, this is contrary with the emissions standard behavior (wherein said drain tap be open for combustion gas) shown in F-IV.
In other words, the first expiratory phase is realized by air intake valve, and therefore, intake cam lifting curve is constant, and the second expiratory phase is realized by drain tap, therefore only has exhaust cam lifting curve to change.
Fig. 1 shows to be in and starts the four-stage F-I to F-IV (left side of figure) of 4-two-stroke engine under state and comparing between the braking process (right side of figure) from B-I to B-IV according to the present invention.
F-I and B-I: first time of piston reduces, for from inlet side inhale fresh air.This one-phase is all identical for standard conditions/braking condition (namely when the engine is driven and when motor is in braking mode);
F-II and B-II: the first time lift of piston; During braking process, suppression fuel sprays and second stage B-II comprises decompression behavior B-II ';
F-III and B-III: the second time of piston declines: when the engine is driven, air intake valve and drain tap are all close; When motor is in braking mode, drain tap is opened, so that perform second time air intake, but sucks from exhaust side;
F-IV and B-IV: when the engine is driven, during fourth stage, waste gas is discharged by drain tap, on the contrary, during braking process, drain tap is followed and the identical behavior referred to during second stage, that is, followed by decompression behavior B-IV ' after compression stage B-IV.
Decompression behavior is all the time by exhaust cam/Valve controlling.
Can also significantly be found out by this comparison, at the whole four-stage starting formula circulation/braking mode to circulate, the behavior of air intake valve is completely constant.
It should also be clear that be only equipped with one group simultaneously by the air intake valve of a common intake cam curve controlled by the cylinder shown in Fig. 1, and be only equipped with one group simultaneously by the drain tap of a common exhaust cam curve controlled.
Cylinder does not have other such valves of the 5th valve in such as DE10200400668.
Fig. 2 show standard (starting) and braking two kinds of situations between exhaust cam curve compare schematic diagram.
Two arrows represent decompression behavior.An arrow can represent exhaust cam curve according to the present invention between-30 to 30 degree along with the air-breathing ridge of the first decompression behavior.
An arrow can also think that intake cam curve (long dotted line) remains unchanged between 180 degree and-90 are spent, and with start/brake operating have nothing to do.
This kind of figure is well-known, and therefore, its explanation can be released immediately by Fig. 2 itself.The displacement of drain tap and thus the shape of cam can change according to the kind of internal-combustion engine.Therefore, the millimeter lift described in Fig. 2 should be considered as non-limiting example.
According to the present invention, the conversion between standard lifting curve and braking curve is advantageously realized by axially displaced cam curve or other cam conversion equipment any.
Adverbial word " axially " is very clearly in this article, wherein it is obvious that, displacement is at the enterprising line operate of the standard shaft of cam.
Concrete reference drawing 2, dotted line refers to braking curve, namely refers to the eccentricity of a part for the sleeve of restriction " braking curve ".
For those skilled in the art, the figure of these kinds is clear and known.
During braking process, the cam curve realized is the short dash line on Fig. 2:
-it keeps smooth and has the first value be substantially zero in the scopes of-120 to-60 degree, this means that valve is closed completely,
Its eccentricity in the scope of-45 to-20 degree of-(the first decompression behavior) is increased to the second value, is essentially 1.8mm, and
-in-20 scopes to 30, keep smooth, and be above-mentioned second value, then
Its eccentricity of-(sucking air from drain tap) increases, until 70 degree, present the first peak value limited with the 3rd value during this period, the 3rd value is essentially 5.2mm, then
-reduce until 140 degree, be back to described first value, then
-(the second decompression behavior) its eccentricity in the scope of 140 to 180 degree increases, and limits the second peak value during this period, then by reaching described second value
-reduce towards described first value at 220 degree of places, and
-present described first value, until 240 degree, then this circulation restarts.
The exhaust lift profiles of accepted standard when the solid line of Fig. 2 shows engine start.An only peak value is arranged between described first peak value of dashed curve and described second peak value substantially.
By the present invention, make to realize 2-stroke braking strategy in 4-two-stroke engine and do not change air intake valve lift control become possibility.
Therefore, engine braking efficiency is made to double and without the need to adopting the system of high complexity to be possible.
After considering open wherein this specification preferred embodiment and accompanying drawing, for a person skilled in the art, many changes of the present invention, amendment, distortion and other purposes and application will become apparent.Do not depart from these changes all of spirit and scope of the invention, amendment, modification and other purposes and application is considered to be covered by the invention.
Because those skilled in the art can come into effect the present invention from above-described instruction, so will not describe further implementation detail.
Claims (12)
1., for performing a method for engine braking process, described method is for based on the decompression behavior of 4-stroke cycle engine, and described motor comprises at least one cylinder, and described cylinder has:
-one or more cylinder intake valve, described one or more cylinder intake valve is subject to a common intake cam curve controlled simultaneously, and
-one or more cylinder exhaust valve, described one or more cylinder exhaust valve is subject to a common exhaust cam curve controlled simultaneously,
Described method comprises only to be changed, so that carry out following steps common described exhaust cam curve:
First compression stage (B-II), described in described first compression stage, one or more cylinder intake valve and described one or more cylinder exhaust valve are closed completely, then be the first decompression behavior (B-II ') performed by described one or more cylinder intake valve, and next in succession perform:
-expiratory phase (B-III), described expiratory phase performs by described one or more cylinder exhaust valve, and wherein said one or more cylinder exhaust valve is closed completely, and
-the second compression stage (B-IV), and then described second compression stage is the second decompression behavior (B-IV ') performed by described one or more cylinder exhaust valve.
2. method according to claim 1, performs preliminary expiratory phase (B-I) by described one or more cylinder intake valve before being also included in described first compression stage (B-II).
3. according to the method one of aforementioned claim Suo Shu, wherein, no matter described intake cam curve is all remain unchanged during motoring operation situation or during engine braking process.
4. according to the method one of aforementioned claim Suo Shu, wherein, the control mechanism implementing described control comprises standard shaft, described standard shaft is fixed with the sleeve with an exhaust cam curve, the adjacent part that described method is included in described sleeve is arranged the step of two or more exhaust cam curves, with the step making described sleeve axially be shifted on described standard shaft, so that enable an exhaust cam curve perform the described first decompression behavior (B-II ') of described braking process, described second decompression behavior (B-IV ') and described expiratory phase (B-III).
5. according to the method one of aforementioned claims 1 to 3 Suo Shu, wherein, the control mechanism implementing described control comprises standard shaft, described standard shaft is fixed with the sleeve with three-dimensional exhaust cam curve, described method comprises the step that described sleeve is axially shifted on described standard shaft, so that enable described exhaust cam curve perform the described first decompression behavior (B-II ') of described braking process, described second decompression behavior (B-IV ') and described expiratory phase (B-III).
6. for performing an equipment for engine braking process, this execution is carried out for based on the decompression behavior of 4-stroke cycle engine, and described motor comprises at least one cylinder, and at least one cylinder described has:
-one or more cylinder intake valve, described one or more cylinder intake valve is subject to a common intake cam curve controlled simultaneously, and
-one or more cylinder exhaust valve, described one or more cylinder exhaust valve is subject to a common exhaust cam curve controlled simultaneously,
The control mechanism of described equipment is configured to perform institute any one of aforementioned claim in steps.
7. equipment according to claim 6, wherein, for being controlled according to " 2-stroke braking lift " curve of Fig. 2 by the described control mechanism performing described first decompression behavior (B-II '), described second decompression behavior (B-IV ') controls described cylinder valve.
8. equipment according to claim 7, wherein, performs the described curve of at least one decompression behavior described (B-II ', B-IV ') of described braking process:
-within the scope of-120 to-60 degree, keep smooth, and there is the first value,
-within the scope of-45 to-20 degree, eccentricity increases,
-within the scope of-20 to 30 degree, keep smooth, and there is the second value,
-eccentricity increases, until 70 degree, has the first peak value limited by the 3rd value during this period, then
-reduce, until 140 degree, be back to described first value,
-within the scope of 140 to 180 degree, eccentricity increases, and has the second peak value limited by described second value during this period, then
-reduce towards described first value at 220 degree of places.
9. according to the equipment one of aforementioned claim 6 to 8 Suo Shu, wherein, second row gas lift cam curve is suitable for operating described cylinder exhaust valve during the motoring operation situation of described motor.
10. equipment according to claim 8, wherein, second row gas lift cam curve only has basic the 3rd peak value between described first peak value and described second peak value.
11. 1 kinds of 4-stroke cycle internal combustion machines, comprise at least one cylinder, and at least one cylinder described has:
-one or more cylinder intake valve, described one or more cylinder intake valve is subject to a common intake cam curve controlled simultaneously, and
-one or more cylinder exhaust valve, described one or more cylinder exhaust valve is subject to a common exhaust cam curve controlled simultaneously,
Further, it is characterized in that: comprise the equipment for performing the engine braking process according to one of claim 6 to 10.
12. land vehicles, is characterized in that, described land vehicle comprises internal-combustion engine according to claim 11.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13169302.0 | 2013-05-27 | ||
| EP13169302.0A EP2808503A1 (en) | 2013-05-27 | 2013-05-27 | System for performing an engine braking procedure based on decompression events for a 4-stroke cycle engine |
| PCT/EP2014/060903 WO2014191385A1 (en) | 2013-05-27 | 2014-05-27 | System for performing an engine braking procedure based on decompression events for a 4-stroke cycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105392970A true CN105392970A (en) | 2016-03-09 |
| CN105392970B CN105392970B (en) | 2017-10-03 |
Family
ID=48534201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480030911.7A Active CN105392970B (en) | 2013-05-27 | 2014-05-27 | Perform method and apparatus, internal combustion engine and the land vehicle of engine braking process |
Country Status (5)
| Country | Link |
|---|---|
| EP (2) | EP2808503A1 (en) |
| CN (1) | CN105392970B (en) |
| BR (1) | BR112015029560B1 (en) |
| ES (1) | ES2662585T3 (en) |
| WO (1) | WO2014191385A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242382A (en) * | 2018-03-08 | 2019-09-17 | 曼卡车和巴士股份公司 | The variable valve actuation mechanism with sliding cam shaft system for internal combustion engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600130806A1 (en) | 2016-12-23 | 2018-06-23 | Fpt Motorenforschung Ag | METHOD TO PERFORM A HEATING OF A POST-TREATMENT SYSTEM OF AN INTERNAL COMBUSTION ENGINE AND THE INTERNAL COMBUSTION ENGINE PREPARED TO IMPLEMENT THE METHOD |
| DE102017003081A1 (en) * | 2017-03-31 | 2018-10-04 | Man Truck & Bus Ag | Variable valve train with brake cam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512154A (en) * | 1971-09-22 | 1985-04-23 | Takahiro Ueno | Method for driving a vehicle driven by an internal combustion engine |
| US20040187842A1 (en) * | 2002-12-23 | 2004-09-30 | Zhou Yang | Engine braking methods and apparatus |
| DE102004006681A1 (en) * | 2004-02-06 | 2005-08-25 | Daimlerchrysler Ag | Engine braking system for combustion engines comprises opening inlet valves during piston positioning in the region of the lower dead point and closing after the lower dead point, and passing compressed air into the outlet of the engine |
| US20090038584A1 (en) * | 2006-02-07 | 2009-02-12 | Wolfram Schmid | Internal combustion engine |
| CN201241740Y (en) * | 2008-08-07 | 2009-05-20 | 俞黎明 | Oscillating beam integrated type brake device of four-stroke internal combustion engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB307753A (en) * | 1928-03-12 | 1930-06-11 | Motorwagenfabrik Berna A.G. | |
| IT1182480B (en) | 1985-07-02 | 1987-10-05 | Fiat Auto Spa | TAPPING SYSTEM FOR INTERNAL COMBUSTION ENGINES EQUIPPED WITH SHAFTS WITH VARIABLE PROFILE CAMS |
-
2013
- 2013-05-27 EP EP13169302.0A patent/EP2808503A1/en not_active Withdrawn
-
2014
- 2014-05-27 WO PCT/EP2014/060903 patent/WO2014191385A1/en active Application Filing
- 2014-05-27 BR BR112015029560-6A patent/BR112015029560B1/en active IP Right Grant
- 2014-05-27 CN CN201480030911.7A patent/CN105392970B/en active Active
- 2014-05-27 ES ES14735862.6T patent/ES2662585T3/en active Active
- 2014-05-27 EP EP14735862.6A patent/EP3004575B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512154A (en) * | 1971-09-22 | 1985-04-23 | Takahiro Ueno | Method for driving a vehicle driven by an internal combustion engine |
| US20040187842A1 (en) * | 2002-12-23 | 2004-09-30 | Zhou Yang | Engine braking methods and apparatus |
| DE102004006681A1 (en) * | 2004-02-06 | 2005-08-25 | Daimlerchrysler Ag | Engine braking system for combustion engines comprises opening inlet valves during piston positioning in the region of the lower dead point and closing after the lower dead point, and passing compressed air into the outlet of the engine |
| US20090038584A1 (en) * | 2006-02-07 | 2009-02-12 | Wolfram Schmid | Internal combustion engine |
| CN201241740Y (en) * | 2008-08-07 | 2009-05-20 | 俞黎明 | Oscillating beam integrated type brake device of four-stroke internal combustion engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242382A (en) * | 2018-03-08 | 2019-09-17 | 曼卡车和巴士股份公司 | The variable valve actuation mechanism with sliding cam shaft system for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3004575A1 (en) | 2016-04-13 |
| EP3004575B1 (en) | 2017-12-13 |
| WO2014191385A1 (en) | 2014-12-04 |
| CN105392970B (en) | 2017-10-03 |
| ES2662585T3 (en) | 2018-04-09 |
| EP2808503A1 (en) | 2014-12-03 |
| BR112015029560A2 (en) | 2017-07-25 |
| BR112015029560B1 (en) | 2022-07-05 |
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