CN203669955U - Device optimizing low-speed performance of internal combustion engine and device starting internal combustion engine - Google Patents
Device optimizing low-speed performance of internal combustion engine and device starting internal combustion engine Download PDFInfo
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- CN203669955U CN203669955U CN201320800325.9U CN201320800325U CN203669955U CN 203669955 U CN203669955 U CN 203669955U CN 201320800325 U CN201320800325 U CN 201320800325U CN 203669955 U CN203669955 U CN 203669955U
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
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Abstract
The utility model discloses a device optimizing the low-speed performance of an internal combustion engine. The internal combustion engine comprises a plurality of air cylinders, an air valve and an air valve actuator. The air valve actuator generates main valve lifting of the internal combustion engine. Main valve lifting comprises valve lifting of an exhaust valve during the exhaust stroke period of the internal combustion engine or valve lifting of an air inlet valve during the air inlet stroke period. The device is characterized by comprising an auxiliary drive mechanism. When the internal combustion engine is in a low-speed operation state, the device utilizes the auxiliary drive mechanism to generate auxiliary valve lifting in some of the air cylinders of the internal combustion engine. Auxiliary valve lifting comprises valve lifting of the exhaust valve during the compression stroke period of the internal combustion engine or valve lifting of the air inlet valve during the compression stroke period. The device stops providing fuel oil for some air cylinders with generated auxiliary valve lifting, maintains main valve lifting of the remaining air cylinders without auxiliary valve lifting to be unchanged, and provides the fuel oil for the remaining air cylinders. On the basis, the utility model further provides a device starting the internal combustion engine.
Description
The utility model requires in the preference that the application number that on October 15th, 2013 submits to is 201320637306.9, name is called " optimize the device of internal-combustion engine low-speed performance and starting apparatus combustion engine and device " Chinese patent application, and its full content is incorporated among the present invention by reference.
Technical field
The utility model relates to mechanical field, relates in particular to internal-combustion engine technology, particularly a kind of device of internal-combustion engine low-speed performance and device of starting apparatus combustion engine optimized.
Background technique
Internal-combustion engine low-speed performance mainly comprises the performances such as parking, starting and the idle running of internal-combustion engine.At arctic weather, compression-ignited diesel engine is difficult to starting.The defects such as excessive fuel consumption, shakiness, vibrations and noise turn round when Heavy Duty Commercial Car internal-combustion engine also exists idling and stops.The auxiliary drive mechanism that is used at present improving engine performance is mostly hydraulic type mechanism.After internal-combustion engine is flame-out, hydraulic type mechanism cannot stay open the air valve of internal-combustion engine.The leakage of fluid (as machine oil) will cause the inefficacy of hydraulic type mechanism, because cannot be to hydraulic type (or air-compression type) mechanism fuel feeding after internal-combustion engine is flame-out, the fluid losing can not get supplementing, drive thereby lose hydraulic connecting or pneumatics, the Diesel Engine's Air Valve of opening by high-pressure liquid will be taken a seat and close under the effect of spring for valve.
Model utility content
The purpose of this utility model is to provide the device of optimizing internal-combustion engine low-speed performance, large, the vibrations and noise is large and the technical problem of internal-combustion engine cold start-up difficulty while stopping of oil consumption while solving in prior art internal-combustion engine low-speed running, and hydraulic type or the air-compression type mechanism technical problem that the air valve of internal-combustion engine cannot be stayed open after internal-combustion engine is flame-out.On this basis, another object of the present utility model is to provide the device of starting apparatus combustion engine.
In the device of this optimization internal-combustion engine low-speed performance of the present utility model, described internal-combustion engine comprises multiple cylinders, the gentle valve actuator of air valve, described air valve actuator produces the main valve liter of internal-combustion engine, described main valve liter comprises that internal-combustion engine is at the valve liter of the outlet valve during exhaust stroke or the valve liter of the suction valve during aspirating stroke, and its device is characterised in that: described device comprises auxiliary drive mechanism; In the time of internal-combustion engine low cruise state, described device utilizes the part cylinder of described auxiliary drive mechanism in the multiple cylinders of internal-combustion engine to produce Auxiliary valves liter, and described Auxiliary valves liter comprises that internal-combustion engine is at the valve liter of the outlet valve during compression stroke or the valve liter of the suction valve during compression stroke; The part cylinder that described device stops rising to described generation Auxiliary valves provides fuel oil, keeps the main valve that does not produce all the other cylinders that Auxiliary valves rises in the multiple cylinders of internal-combustion engine rise constant and provide fuel oil for described all the other cylinders simultaneously.
Further, internal-combustion engine low cruise state comprises idling for internal combustion engine state.
Further, idling for internal combustion engine state comprises that internal-combustion engine output torque is zero or close to zero.
Further, idling for internal combustion engine state comprises that engine throttle position is zero.
Further, idling for internal combustion engine state comprise engine speed be or close to demarcate idling.
Further, idling for internal combustion engine state comprise engine speed be or close to demarcate idling.
Further, described device regulate to the amount of fuel that does not produce all the other cylinders that Auxiliary valves rises and provide make engine speed or close to demarcating idling.
Further, described internal-combustion engine comprises constant valve liter at outlet valve liter or the suction valve liter during compression stroke during compression stroke, and the height that described constant valve rises is between 0.5mm and 3.0mm.
Further, described auxiliary drive mechanism is integrated in described air valve actuator.
Further, described auxiliary drive mechanism and described air valve actuator are two separate valve actuation mechanism.
Further, described auxiliary drive mechanism is solid chain mechanism, described solid chain mechanism comprises an off position and an operating position, at described operating position, Gu chain mechanism forms mechanical connection and opens described air valve with the air valve that produces Auxiliary valves liter, at described off position, Gu chain mechanism and produce Auxiliary valves rise air valve unclamp and cancellation and described air valve between interaction.
Further, described solid chain mechanism comprises a working piston, and described working piston is placed in a casing, and described casing comprises:
Be placed in casing or static assembly relative to internal-combustion engine on internal-combustion engine,
Can there is with internal-combustion engine the regulating piston of relative movement,
Rocking arm, and
The valve bridge of internal-combustion engine.
Further, multiple cylinders of described internal-combustion engine comprise six cylinders, produce Auxiliary valves and rise and stop providing the part cylinder of fuel oil to comprise three cylinders in described six cylinders in described multiple cylinders.
Working principle of the present utility model is: in the operation process of internal-combustion engine, open Diesel Engine's Air Valve by the valve actuation mechanism of internal-combustion engine, produce the conventional valve liter (main valve liter) of internal-combustion engine.In the time of certain internal-combustion engine low cruise state (such as, the idling mode of internal-combustion engine), utilize the part cylinder of an auxiliary drive mechanism in the multiple cylinders of internal-combustion engine to produce Auxiliary valves liter, described Auxiliary valves liter comprises that internal-combustion engine is at the valve liter of the outlet valve during compression stroke or the valve liter of the suction valve during compression stroke.The part cylinder that stops rising to described generation Auxiliary valves provides fuel oil, keeps the main valve of all the other cylinders in the multiple cylinders of internal-combustion engine rise constant and provide fuel oil for described all the other cylinders.Due to the Auxiliary valves liter of part cylinder during compression stroke, cylinder drops, piston resistance and the rotation torque of internal-combustion engine reduce, so just the idling of internal-combustion engine can be lowered, the amount of fuel providing to all the other cylinders that do not produce Auxiliary valves liter is provided, reach the new idling of internal-combustion engine stable operation, the new idling of described internal-combustion engine stable operation is demarcated idling lower than the original full cylinder of internal-combustion engine, thereby optimizes the low-speed performance of internal-combustion engine.For instance, one has the internal-combustion engine of six cylinders, in the time that original six cylinders are demarcated idle running, start auxiliary drive mechanism, three cylinders therein produce Auxiliary valves liter, namely during compression stroke, at least one air valve of each cylinder is stayed open, venting release, and stop providing fuel oil to three cylinders that produce Auxiliary valves liter.Meanwhile, keep the main valve liter of its excess-three cylinder of six cylinders constant and provide fuel oil for described its excess-three cylinder.The rotating speed of internal-combustion engine is lowered, the amount of fuel providing to its excess-three cylinder that does not produce Auxiliary valves liter is provided simultaneously, reach the new lower idle rotating speed of internal-combustion engine stable operation.Because idle rotating speed declines, in six cylinders, only have three cylinder fuel consumption, reach the optimization aim that combustion engine energy-saving reduces discharging.
The utility model is compared with prior art, and its effect is actively with obvious.The method of optimization internal-combustion engine low-speed performance of the present utility model and mechanism are novel unique, utilize auxiliary drive mechanism to produce the Auxiliary valves liter of internal-combustion engine, have eliminated cylinder pressure, have improved the low-speed performance of internal-combustion engine, reduce oil consumption, reduce discharge.
The device of the starting apparatus combustion engine that the utility model provides, described internal-combustion engine comprises multiple cylinders, air valve, air valve actuator and auxiliary drive mechanism, described air valve actuator produces the main valve liter of internal-combustion engine, described main valve liter comprises that internal-combustion engine is at the valve liter of the outlet valve during exhaust stroke or the valve liter of the suction valve during aspirating stroke, described device ato unit, utilize auxiliary drive mechanism that a valve of each cylinder is at least stayed open during compression stroke simultaneously, and stop providing fuel oil to all cylinders; Described device reaches after the first desired speed at the rotating speed of internal-combustion engine, inactive auxiliary drive mechanism, utilize air valve actuator to make the valve of the part cylinder including a cylinder get back to main valve and rise state, and get back to the part cylinder that main valve rises state fuel oil is provided to described.
Preferably, described device regulates and offers described amount of fuel of getting back to main valve and rises the part cylinder of state, the idling that the rotating speed of maintenance internal-combustion engine is internal-combustion engine.
Preferably, described auxiliary drive mechanism is integrated in described air valve actuator.
Preferably, described auxiliary drive mechanism and described air valve actuator are two separate valve actuation mechanism.
Preferably, described auxiliary drive mechanism is solid chain mechanism, described solid chain mechanism comprises an off position and an operating position, at described operating position, Gu chain mechanism forms mechanical connection and opens described air valve with the air valve that produces Auxiliary valves liter, at described off position, Gu chain mechanism and produce Auxiliary valves rise air valve unclamp and cancellation and described air valve between interaction.
Preferably, described solid chain mechanism comprises a working piston, and described working piston is placed in a casing, and described casing comprises:
Be placed in casing or static assembly relative to internal-combustion engine on internal-combustion engine,
Can there is with internal-combustion engine the regulating piston of relative movement,
The rocking arm of internal-combustion engine, and
The valve bridge of internal-combustion engine.
Preferably, multiple cylinders of described internal-combustion engine comprise six cylinders, produce Auxiliary valves and rise and stop providing the part cylinder of fuel oil to comprise three cylinders in described six cylinders in described multiple cylinders.
The method of the starting apparatus combustion engine that the utility model provides and mechanism have positive and obvious effect equally, compared with prior art, the method of its starting apparatus combustion engine and mechanism are novel unique, utilize auxiliary drive mechanism to produce the Auxiliary valves liter of internal-combustion engine, eliminate cylinder pressure, improved the startability of internal-combustion engine.
Brief description of the drawings
Fig. 1 is the schematic diagram of first embodiment of the present utility model in off position.
Fig. 2 is the schematic diagram of first embodiment of the present utility model in operating position.
Fig. 3 is first embodiment's of the present utility model application one schematic diagram in off position.
Fig. 4 is first embodiment's of the present utility model application one schematic diagram in operating position.
Fig. 5 is first embodiment's of the present utility model application two schematic diagram in off position.
Fig. 6 is first embodiment's of the present utility model application two schematic diagram in operating position.
Fig. 7 is the schematic diagram of second embodiment of the present utility model in off position.
Fig. 8 is the schematic diagram of second embodiment of the present utility model in operating position.
Fig. 9 is the plan view of second embodiment of the present utility model in operating position.
Embodiment
The device of scheme one, optimization internal-combustion engine low-speed performance, described internal-combustion engine comprises multiple cylinders, the gentle valve actuator of air valve, described air valve actuator produces the main valve liter of internal-combustion engine, described main valve liter comprises that internal-combustion engine is at the valve liter of the outlet valve during exhaust stroke or the valve liter of the suction valve during aspirating stroke, and described device comprises auxiliary drive mechanism; In the time of internal-combustion engine low cruise state, described device utilizes the part cylinder of described auxiliary drive mechanism in the multiple cylinders of internal-combustion engine to produce Auxiliary valves liter, and described Auxiliary valves liter comprises that internal-combustion engine is at the valve liter of the outlet valve during compression stroke or the valve liter of the suction valve during compression stroke; The part cylinder that described device stops rising to described generation Auxiliary valves provides fuel oil, keeps the main valve that does not produce all the other cylinders that Auxiliary valves rises in the multiple cylinders of internal-combustion engine rise constant and provide fuel oil for described all the other cylinders simultaneously.
Scheme two, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, internal-combustion engine low cruise state comprises idling for internal combustion engine state.
Scheme three, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme two, idling for internal combustion engine state comprises that internal-combustion engine output torque is zero or close to zero.
Scheme four, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme two or scheme three, idling for internal combustion engine state comprises that engine throttle position is zero.
Scheme five, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme four, idling for internal combustion engine state comprises that engine speed is or close to demarcating idling.
Scheme six, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme two or scheme three, idling for internal combustion engine state comprises that engine speed is or close to demarcating idling.
Scheme seven, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, described device regulate to the amount of fuel that does not produce all the other cylinders that Auxiliary valves rises and provide make engine speed or close to demarcating idling.
Scheme eight, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, described internal-combustion engine comprises constant valve liter at outlet valve liter or the suction valve liter during compression stroke during compression stroke, and the height that described constant valve rises is between 0.5mm and 3.0mm.
Scheme nine, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, described auxiliary drive mechanism is integrated in described air valve actuator.
Scheme ten, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, described auxiliary drive mechanism and described air valve actuator are two separate valve actuation mechanism.
Scheme 11, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, described auxiliary drive mechanism is solid chain mechanism, described solid chain mechanism comprises an off position and an operating position, at described operating position, Gu chain mechanism forms mechanical connection and opens described air valve with the air valve that produces Auxiliary valves liter, at described off position, Gu chain mechanism and produce Auxiliary valves rise air valve unclamp and cancellation and described air valve between interaction.
Scheme 12, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme 11, described solid chain mechanism comprises a working piston, described working piston is placed in a casing, described casing comprises:
Be placed in casing or static assembly relative to internal-combustion engine on internal-combustion engine,
Can there is with internal-combustion engine the regulating piston of relative movement,
Rocking arm, and
The valve bridge of internal-combustion engine.
Scheme 13, on the basis of the device of the optimization internal-combustion engine low-speed performance described in scheme one, multiple cylinders of described internal-combustion engine comprise six cylinders, produce Auxiliary valves and rise and stop providing the part cylinder of fuel oil to comprise three cylinders in described six cylinders in described multiple cylinders.
The device of scheme 14, a kind of starting apparatus combustion engine, described internal-combustion engine comprises multiple cylinders, air valve, air valve actuator and auxiliary drive mechanism, described air valve actuator produces the main valve liter of internal-combustion engine, described main valve liter comprises that internal-combustion engine is at the valve liter of the outlet valve during exhaust stroke or the valve liter of the suction valve during aspirating stroke, described device ato unit, utilize auxiliary drive mechanism that a valve of each cylinder is at least stayed open during compression stroke simultaneously, and stop providing fuel oil to all cylinders; Described device reaches after the first desired speed at the rotating speed of internal-combustion engine, inactive auxiliary drive mechanism, utilize air valve actuator to make the valve of the part cylinder including a cylinder get back to main valve and rise state, and get back to the part cylinder that main valve rises state fuel oil is provided to described.
Scheme 15, on the basis of the device of the starting apparatus combustion engine described in scheme 14, described device regulates and offers described amount of fuel of getting back to main valve and rises the part cylinder of state, the idling that the rotating speed of maintenance internal-combustion engine is internal-combustion engine.
Scheme 16, on the basis of the device of the starting apparatus combustion engine described in scheme 14, described auxiliary drive mechanism is integrated in described air valve actuator.
Scheme 17, on the basis of the device of the starting apparatus combustion engine described in scheme 14, described auxiliary drive mechanism and described air valve actuator are two separate valve actuation mechanism.
Scheme 18, on the basis of the device of the starting apparatus combustion engine described in scheme 14, described auxiliary drive mechanism is solid chain mechanism, described solid chain mechanism comprises an off position and an operating position, at described operating position, Gu chain mechanism forms mechanical connection and opens described air valve with the air valve that produces Auxiliary valves liter, at described off position, Gu chain mechanism and produce Auxiliary valves rise air valve unclamp and cancellation and described air valve between interaction.
Scheme 19, on the basis of the device of the starting apparatus combustion engine described in scheme 18, described solid chain mechanism comprises a working piston, described working piston is placed in a casing, described casing comprises:
Be placed in casing or static assembly relative to internal-combustion engine on internal-combustion engine,
Can there is with internal-combustion engine the regulating piston of relative movement,
The rocking arm of internal-combustion engine, and
The valve bridge of internal-combustion engine.
Scheme 20, on the basis of the device of the starting apparatus combustion engine described in scheme 14, multiple cylinders of described internal-combustion engine comprise six cylinders, produce Auxiliary valves and rise and stop providing the part cylinder of fuel oil to comprise three cylinders in described six cylinders in described multiple cylinders.
Embodiment 1:
Fig. 1 to Fig. 6 is used for describing embodiment one.
Fig. 1 and Fig. 2 are respectively the structural representation of first embodiment of the present utility model in off position and operating position, auxiliary drive mechanism 100 is wherein that solid chain mechanism (carries by mechanical linkages, open air valve), comprise casing 125, starting mechanism, load bearing mechanism and valve clearance controlling mechanism.Casing 125 contains valve clearance regulating piston hole 290 and fluid passage 214 and 168.In valve clearance regulating piston hole 290, be mounted with valve clearance regulating piston 162, there is valve clearance adjusting bolt 1102 piston 162 tops and tightens up nut 1052, piston 162 has stop bit spring 177 and clamp-screw 179, piston 162+ to contain vertical startup piston hole 260 and working piston hole 190 and drain pan (hole) 169 with being communicated with mutually below.Load bearing mechanism comprises the working piston 160 that is positioned at working piston hole 190, by 178 stop bits of snap ring in hole.Starting mechanism comprises startup piston 164 and spring 156.Start piston 164 and be placed in the startup piston hole 260 in valve clearance regulating piston 162, spring 156 is placed in the one end that starts piston 164, starts the other end of piston 164 near fluid passage 214.Be subject to the effect of the fluid in spring 156 or fluid passage 214, the startup piston 164 of starting mechanism moves between off-position (Fig. 1) and working position (Fig. 2).At the off-position shown in Fig. 1, the small cylindrical surface (non-working surface) that starts piston 164 is positioned at the top of working piston 160, and working piston 160 can move upward, and produces motion and loses, and auxiliary drive mechanism 100 is in off position.In the working position shown in Fig. 2, the great circle cylinder (working surface) that starts piston 164 is positioned at the top of working piston 160, and working piston 160 can not move upward, and forms mechanical connection, and auxiliary drive mechanism 100 is in operating position.
Valve clearance controlling mechanism in Fig. 1 and Fig. 2 also comprises adjusting bolt 1103 and tightens up nut 1053.In the time there is no pressure fluid in fluid passage 214 (as the assembling stage at internal-combustion engine), can startup piston 164 be placed in to off-position (Fig. 1) by adjusting bolt 1103.In the time that internal-combustion engine operates, adjusting bolt 1103 tightens up by tightening up nut 1053 should exiting in starting piston hole 260, ensures to start piston 164 and can arrive at working position (Fig. 2).
Fig. 1 and Fig. 2 are first embodiment's of the utility model schematic diagram, and many other develop all and likely therefrom produce.For instance, starting piston 164 can have different positions and shape, and working surface and non-working surface that wherein large and small cylndrical surface forms can be merged into an inclined-plane.In addition, driving mode, moving direction and the stop bit etc. of startup piston 164 can have different designs.
Fig. 3 and Fig. 4 are respectively embodiment's one of the present utility model application scheme one schematic diagram in off position and operating position.Air valve actuator 200 shown in figure comprises cam 230, tappet roller 235, rocking arm 210, pitman arm shaft (or rocker arm support) 205, conventional valve clearance regulating system and valve bridge 400.Conventional valve clearance regulating system comprises adjusting screw 110, tightens up nut 105 and resembles foot pad 114.Two air valves 300 (3001 and 3002) of internal-combustion engine are positioned at below valve bridge 400 both sides, spring for valve 310 (3101 and 3102) by internal-combustion engine is biased on the valve seat 320 of internal combustion engine cylinders 500, stops gas to flow between cylinder of internal combustion engine and outlet pipe 600.Rocking arm 210 is arranged on pitman arm shaft 205 rock typely.One end of rocking arm 210 is connected with cam 230 by roller 235, and cam 230 has conventional boss 220 on interior basic circle 225.Cam 230 move through rocking arm 210 and valve bridge 400, pass to air valve 300, they are are periodically opened and closed, produce the conventional valve liter (main valve liter) of internal-combustion engine.
In the time needing the Auxiliary valves of internal-combustion engine to rise, can be by reducing the hydrodynamic pressure in even complete eliminate fluid passage 214, or from fluid passage 168 to the other end fuel feeding that starts piston, or by the active force of spring 156, or comprehensive above-mentioned different means mechanical or fluid, will start piston 164 and be switched to working position (Fig. 4) from off-position (Fig. 3).The working procedure of utilizing auxiliary drive mechanism 100 to produce Auxiliary valves liter can be described below simply.First, the air valve actuator 200 of internal-combustion engine pushes away valve bridge 400 and two air valves 300 downwards, produces the conventional valve liter (main valve liter) of internal-combustion engine.Then at a predetermined internal-combustion engine rotational speed, auxiliary drive mechanism 100 is moved on to operating position (Fig. 4) from off position (Fig. 3), form mechanical connection by starting piston 164 and working piston 160 with the air valve 3001 of valve bridge 400 and internal-combustion engine, stoping the air valve 3001 being opened to be taken a seat closes, in engine cycle (particularly during compression stroke) outside main valve rises, stay open, the described valve rise of opening is 130 shown in Fig. 4, and its size can be between 0.5mm and 3.0mm.
Described above is that the single cylinder of internal-combustion engine produces the apparatus and method that conventional valve liter (main valve liter) and Auxiliary valves rise.For the operation of the internal-combustion engine that contains multiple cylinders, can internal-combustion engine low cruise state (such as, the idling mode of internal-combustion engine), utilize the part cylinder of auxiliary drive mechanism 100 in the multiple cylinders of internal-combustion engine to produce Auxiliary valves liter, and stop providing fuel oil to the part cylinder that produces Auxiliary valves liter.Meanwhile, keep the main valve of all the other cylinders in internal-combustion engine multiple cylinders rise constant and provide fuel oil for described all the other cylinders.For instance, the internal-combustion engine of six cylinders, can utilize auxiliary drive mechanism 100 that three cylinders are wherein produced to Auxiliary valves liter, and stop providing fuel oil to these three cylinders that produce Auxiliary valves liter, keep the main valve of its excess-three cylinder of internal-combustion engine rise constant and provide fuel oil for it simultaneously.Because the air valve of three cylinders wherein has Auxiliary valves liter, the particularly Auxiliary valves liter during compression stroke, cylinder pressure and engine torque are greatly reduced, make internal-combustion engine more steady in the time that low speed (comprising idling) turns round, also for internal-combustion engine running under than the lower idling of six cylinder idling becomes possibility, optimize the low-speed performance of internal-combustion engine, reduced the consumption of fuel oil, reduced the discharge of waste gas.
Fig. 5 and Fig. 6 are respectively embodiment's one of the present utility model application scheme two schematic diagram in off position and operating position.What this application scheme adopted is push rod internal-combustion engine, has increased push rod 201 than the overhead-cam internal-combustion engine in Fig. 3 and Fig. 4.In addition, auxiliary drive mechanism 100 is integrated in the rocking arm 210 interior (that is to say, rocking arm 210 has substituted casing 125) of air valve actuator 200.The adjusting of the valve clearance of auxiliary drive mechanism 100 is by the valve clearance adjusting bolt 1102 of push rod one side and tighten up nut 1052 and realize.
In the time needing the Auxiliary valves of internal-combustion engine to rise, can be by reducing the hydrodynamic pressure in even complete eliminate fluid passage 214, or from fluid passage 168 to the other end fuel feeding that starts piston, or by the active force of spring 156, or comprehensive above-mentioned different means mechanical or fluid, will start piston 164 and be switched to working position (Fig. 6) from off-position (Fig. 5).Working piston 160 is positioned at the below of the great circle cylinder (working surface) that starts piston 164, form mechanical connection with the air valve 3001 of valve bridge 400 and internal-combustion engine, stoping the air valve 3002 of being opened by air valve actuator 200 to be taken a seat closes, in engine cycle (particularly during compression stroke) outside main valve rises, stay open, the described valve rise of opening is 130 shown in Fig. 6, and its size can be between 0.5mm and 3.0mm.
Embodiment 2:
Fig. 7 to Fig. 9 is used for describing embodiment two.
Fig. 7 and Fig. 8 are respectively the schematic diagram of second embodiment of the present utility model in off position and operating position, the present embodiment and embodiment's one the main distinction is that embodiment one 100 of auxiliary drive mechanisms are opened an air valve, generation Auxiliary valves liter, and the auxiliary drive mechanism 100 of the present embodiment is opened two air valves, produce Auxiliary valves liter.The cylindrical shape combination (can be also the combination of multiple pistons) that the working piston 160 is here more piece.Piston hole in pitman arm shaft (or rocker arm support) 205 comprises between small piston hole 190 and large 260, two piston holes of piston hole and being communicated with fluid passage 211.One end of spring 156 acts on working piston 160, and the other end is placed in above spring seat 179, and spring seat 179 is fixed in piston hole 260 by snap ring 178.The valve clearance adjusting bolt 1102 of auxiliary drive mechanism 100 and tighten up nut 1052 and be positioned at a protruding part 2102 of rocking arm 210.
When needs are opened auxiliary drive mechanism 100, when the Auxiliary valves of generation internal-combustion engine rises, can unload stream by fluid passage 211, the oil pressure between two piston holes is reduced even completely and eliminated.Working piston 160 is not subject to the effect of oil pressure, upwards pushes operating position under the effect of spring 156 to.Before working piston 160 can be switched to operating position from off position, the air valve actuator 200 of internal-combustion engine pushes away air valve 300 downwards and opens; rocking arm 210 does inhour and rotates on pitman arm shaft 205; in the time that the working piston 160 in pitman arm shaft 205 is thrown off with the adjusting bolt 1102 on rocking arm 210, it just reaches operating position as shown in Figure 8 outward.After being opened completely by air valve actuator 200, air valve 300 returns in the process at its seat 320; rocking arm 210 does clockwise revolution on pitman arm shaft 205; fore side 141 of the working piston 160 in operating position (stretching out in pitman arm shaft 215) rests in adjusting bolt 1102; stop further revolution clockwise of rocking arm 210, between roller 235 and cam 230, form gap 131(Fig. 8).Working piston 160 forms mechanical linkages by rocking arm 210 and air valve 300, stops the air valve 300 after being opened by air valve actuator 200 get back to its seat 320 and close, and stays open an amount 130.Therefore, except conventional valve liter (main valve liter), also increased a kind of Auxiliary valves liter of often opening, the often amount of opening 130 of air valve is determined by the distance between not operation face 140 and the fore side 141 of working piston 160.
Fig. 9 is a plan view for describing embodiment two, the position relationship between further obvious working piston 160 in rocking arm 210 adjusting bolt 1102 and rocker arm bracket (or pitman arm shaft) 205 above.It can be rocking arm 210 part of the whole with the protruding part 2102 that tightens up nut 1052 that adjusting bolt 1102 is installed, and can be also the independent part being assembled on rocking arm 210.
Above-mentioned explanation has comprised a lot of concrete mode of executions, and this should not be regarded as the restriction to the utility model scope, but as representing concrete illustrations more of the present utility model, many other develop all and likely therefrom produce.For instance, the method and apparatus of optimization internal-combustion engine low-speed performance showing here, not only can be used for driving into air valve, also can be used to drive outlet valve.Again for example, also can be for the method and apparatus of starting apparatus combustion engine.
Also have, here the switched system that the working piston (or starting piston) showing is changed between off position and operating position comprises containing the mechanical type drive system having elastic component, or the hydraulic type drive system that contains hydraulic element, or the pneumatic type drive system that contains pneumatic element, or the drive system being combined to form of above-mentioned drive system.
In addition, the casing showing here can have different kinds, comprising: be placed in casing on internal-combustion engine or static assembly relative to internal-combustion engine, have regulating piston, rocking arm and the valve bridge etc. of relative movement with internal-combustion engine.
Further, the solid chain mechanism showing here also can be varied, and such as starting kind and the form of piston and working piston, working piston also can not act directly on valve bridge, but by a link, acts directly on the air valve of internal-combustion engine.
Therefore, scope of the present utility model should not decided by above-mentioned concrete illustration, but is decided by affiliated claim and the suitable power of law thereof.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (20)
1. optimize the device of internal-combustion engine low-speed performance, described internal-combustion engine comprises multiple cylinders, the gentle valve actuator of air valve, described air valve actuator produces the main valve liter of internal-combustion engine, described main valve liter comprises that internal-combustion engine, at the valve liter of the outlet valve during exhaust stroke or the valve liter of the suction valve during aspirating stroke, is characterized in that: described device comprises auxiliary drive mechanism; In the time of internal-combustion engine low cruise state, described device utilizes the part cylinder of described auxiliary drive mechanism in the multiple cylinders of internal-combustion engine to produce Auxiliary valves liter, and described Auxiliary valves liter comprises that internal-combustion engine is at the valve liter of the outlet valve during compression stroke or the valve liter of the suction valve during compression stroke; The part cylinder that described device stops rising to described generation Auxiliary valves provides fuel oil, keeps the main valve that does not produce all the other cylinders that Auxiliary valves rises in the multiple cylinders of internal-combustion engine rise constant and provide fuel oil for described all the other cylinders simultaneously.
2. the device of optimization internal-combustion engine low-speed performance as claimed in claim 1, is characterized in that: internal-combustion engine low cruise state comprises idling for internal combustion engine state.
3. the device of optimization internal-combustion engine low-speed performance as claimed in claim 2, is characterized in that: idling for internal combustion engine state comprises that internal-combustion engine output torque is zero or close to zero.
4. the device of optimizing as claimed in claim 2 or claim 3 internal-combustion engine low-speed performance, is characterized in that: idling for internal combustion engine state comprises that engine throttle position is zero.
5. the device of optimization internal-combustion engine low-speed performance as claimed in claim 4, is characterized in that: idling for internal combustion engine state comprise engine speed be or close to demarcate idling.
6. the device of optimizing as claimed in claim 2 or claim 3 internal-combustion engine low-speed performance, is characterized in that, idling for internal combustion engine state comprise engine speed be or close to demarcate idling.
7. the device of optimization internal-combustion engine low-speed performance as claimed in claim 1, is characterized in that, described device regulate to the amount of fuel that does not produce all the other cylinders that Auxiliary valves rises and provide make engine speed or close to demarcating idling.
8. the device of optimization internal-combustion engine low-speed performance as claimed in claim 1, it is characterized in that, described internal-combustion engine comprises constant valve liter at outlet valve liter or the suction valve liter during compression stroke during compression stroke, and the height that described constant valve rises is between 0.5mm and 3.0mm.
9. the device of optimization internal-combustion engine low-speed performance as claimed in claim 1, is characterized in that, described auxiliary drive mechanism is integrated in described air valve actuator.
10. the device of optimization internal-combustion engine low-speed performance as claimed in claim 1, is characterized in that, described auxiliary drive mechanism and described air valve actuator are two separate valve actuation mechanism.
The device of 11. optimization internal-combustion engine low-speed performances as claimed in claim 1, it is characterized in that, described auxiliary drive mechanism is solid chain mechanism, described solid chain mechanism comprises an off position and an operating position, at described operating position, Gu chain mechanism forms mechanical connection and also opens described air valve with producing air valve that Auxiliary valves rises, at described off position, solid chain mechanism unclamp with the air valve of generation Auxiliary valves liter and cancellation and described air valve between interaction.
The device of 12. optimization internal-combustion engine low-speed performances as claimed in claim 11, is characterized in that, described solid chain mechanism comprises a working piston, and described working piston is placed in a casing, and described casing comprises:
Be placed in casing or static assembly relative to internal-combustion engine on internal-combustion engine,
Can there is with internal-combustion engine the regulating piston of relative movement,
Rocking arm, and
The valve bridge of internal-combustion engine.
The device of 13. optimization internal-combustion engine low-speed performances as claimed in claim 1, it is characterized in that, multiple cylinders of described internal-combustion engine comprise six cylinders, produce Auxiliary valves and rise and stop providing the part cylinder of fuel oil to comprise three cylinders in described six cylinders in described multiple cylinders.
The device of 14. 1 kinds of starting apparatus combustion engines, described internal-combustion engine comprises multiple cylinders, air valve, air valve actuator and auxiliary drive mechanism, described air valve actuator produces the main valve liter of internal-combustion engine, described main valve liter comprises that internal-combustion engine is at the valve liter of the outlet valve during exhaust stroke or the valve liter of the suction valve during aspirating stroke, it is characterized in that: described device ato unit, utilize auxiliary drive mechanism that a valve of each cylinder is at least stayed open during compression stroke simultaneously, and stop providing fuel oil to all cylinders; Described device reaches after the first desired speed at the rotating speed of internal-combustion engine, inactive auxiliary drive mechanism, utilize air valve actuator to make the valve of the part cylinder including a cylinder get back to main valve and rise state, and get back to the part cylinder that main valve rises state fuel oil is provided to described.
The device of 15. starting apparatus combustion engines as claimed in claim 14, is characterized in that: described device regulates and offers described amount of fuel of getting back to main valve and rises the part cylinder of state, the idling that the rotating speed of maintenance internal-combustion engine is internal-combustion engine.
The device of 16. starting apparatus combustion engines as claimed in claim 14, is characterized in that: described auxiliary drive mechanism is integrated in described air valve actuator.
The device of 17. starting apparatus combustion engines as claimed in claim 14, is characterized in that: described auxiliary drive mechanism and described air valve actuator are two separate valve actuation mechanism.
The device of 18. starting apparatus combustion engines as claimed in claim 14, it is characterized in that: described auxiliary drive mechanism is solid chain mechanism, described solid chain mechanism comprises an off position and an operating position, at described operating position, Gu chain mechanism forms mechanical connection and opens described air valve with the air valve that produces Auxiliary valves liter, at described off position, Gu chain mechanism and produce Auxiliary valves rise air valve unclamp and cancellation and described air valve between interaction.
The device of 19. starting apparatus combustion engines as claimed in claim 18, is characterized in that, described solid chain mechanism comprises a working piston, and described working piston is placed in a casing, and described casing comprises:
Be placed in casing or static assembly relative to internal-combustion engine on internal-combustion engine,
Can there is with internal-combustion engine the regulating piston of relative movement,
The rocking arm of internal-combustion engine, and
The valve bridge of internal-combustion engine.
The device of 20. starting apparatus combustion engines as claimed in claim 14, it is characterized in that, multiple cylinders of described internal-combustion engine comprise six cylinders, produce Auxiliary valves and rise and stop providing the part cylinder of fuel oil to comprise three cylinders in described six cylinders in described multiple cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800325.9U CN203669955U (en) | 2013-10-15 | 2013-12-06 | Device optimizing low-speed performance of internal combustion engine and device starting internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320637306 | 2013-10-15 | ||
| CN201320637306.9 | 2013-10-15 | ||
| CN201320800325.9U CN203669955U (en) | 2013-10-15 | 2013-12-06 | Device optimizing low-speed performance of internal combustion engine and device starting internal combustion engine |
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| CN203669955U true CN203669955U (en) | 2014-06-25 |
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| CN201310656226.2A Active CN104564211B (en) | 2013-10-15 | 2013-12-06 | Optimize the device and method of internal combustion engine low-speed performance |
| CN201320800325.9U Withdrawn - After Issue CN203669955U (en) | 2013-10-15 | 2013-12-06 | Device optimizing low-speed performance of internal combustion engine and device starting internal combustion engine |
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| CN201310656226.2A Active CN104564211B (en) | 2013-10-15 | 2013-12-06 | Optimize the device and method of internal combustion engine low-speed performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564211A (en) * | 2013-10-15 | 2015-04-29 | 上海尤顺汽车部件有限公司 | Method and device for optimizing low-speed performance of internal combustion engine as well as method and device for starting internal combustion engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016214286A1 (en) * | 2015-12-07 | 2017-06-08 | Robert Bosch Gmbh | Method for zero-quantity calibration of injector-metered fuel in an internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003237B (en) * | 2009-08-31 | 2013-05-15 | 上海尤顺汽车部件有限公司 | Engine braking improving device |
| CN201924978U (en) * | 2010-12-21 | 2011-08-10 | 上海尤顺汽车部件有限公司 | Combined rocker arm device used for generating auxiliary air valve movement of engine |
| CN102562214B (en) * | 2010-12-21 | 2014-10-29 | 上海尤顺汽车部件有限公司 | Compound rocker arm device used for producing auxiliary valve movement of engine |
| CN102588030B (en) * | 2011-01-05 | 2016-08-10 | 上海尤顺汽车部件有限公司 | The auxiliary valve driving mechanism of electromotor |
| CN104564211B (en) * | 2013-10-15 | 2018-10-16 | 上海尤顺汽车部件有限公司 | Optimize the device and method of internal combustion engine low-speed performance |
-
2013
- 2013-12-06 CN CN201310656226.2A patent/CN104564211B/en active Active
- 2013-12-06 CN CN201320800325.9U patent/CN203669955U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564211A (en) * | 2013-10-15 | 2015-04-29 | 上海尤顺汽车部件有限公司 | Method and device for optimizing low-speed performance of internal combustion engine as well as method and device for starting internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104564211A (en) | 2015-04-29 |
| CN104564211B (en) | 2018-10-16 |
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Granted publication date: 20140625 Effective date of abandoning: 20181016 |