CN1282821C - Air-valve device of IC engine - Google Patents

Air-valve device of IC engine Download PDF

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Publication number
CN1282821C
CN1282821C CN 200310121462 CN200310121462A CN1282821C CN 1282821 C CN1282821 C CN 1282821C CN 200310121462 CN200310121462 CN 200310121462 CN 200310121462 A CN200310121462 A CN 200310121462A CN 1282821 C CN1282821 C CN 1282821C
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air
valve
device
ic
engine
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CN 200310121462
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Chinese (zh)
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CN1508399A (en )
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冈俊彦
长野修治
德久胜规
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三菱自动车工业株式会社
三菱自动车工程株式会社
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Abstract

本发明提供一种内燃机的气门装置,它具有:控制第一进气阀9和第二进气阀11的开关状况的可变阀门控制机构;储存供应给可变阀门控制机构的压力油的蓄压器45;安装在蓄压器45上游侧的第二过滤器46。 The present invention provides a valve device of an internal combustion engine, having: a variable valve control mechanism controls the first intake valve 9 and the switching conditions of the second intake valve 11; the storage reservoir is supplied to the variable valve mechanism control oil pressure pressure 45; the second filter 45 is mounted in the upstream side of the accumulator 46. 储存在蓄压器45中的压力油由第二过滤器46过滤,从而能减少混入蓄压器45中的异物。 Stored in a pressure accumulator 45 by the second oil filter 46 filters, foreign matter can be reduced so that the accumulator 45.

Description

内燃机的气门装置 A valve of an internal combustion engine

技术领域 FIELD

本发明涉及内燃机的气门装置,它能以不同的驱动时间段驱动内燃机的进气阀和排气阀的开、关。 The present invention relates to a valve of an internal combustion engine, driving it to open the intake and exhaust valves of an internal combustion engine driven at different time periods, off.

背景技术 Background technique

近年来,已经研制出能根据发动机的负荷状态和转速状态,转换设置在往复式内燃机(发动机)上的进气阀和排气阀(发动机阀门)的工作特性,即,转换开关的时间段和开放时间的长度的气门装置,并已经使之实用化。 In recent years, it has been developed and can be in accordance with the load state speed condition of the engine operating characteristics is provided on a reciprocating internal combustion engine converts (engine) intake and exhaust valves (engine valves), i.e., the time period and the switch It means the length of the valve open time, and have made it into practical use.

在这种气门装置中,已经研制出来的一种转换工作特性的机构,例如,是根据发动机的转速,有选择地使用具有适合于发动机低速旋转时的凸轮轮廓的低速用的凸轮,或者使用具有适合于发动机高速旋转时的凸轮轮廓的高速用的凸轮,来使发动机的阀门进行开、关动作。 In such valve apparatus, a mechanism has been developed a transformation operating characteristics, e.g., the rotational speed of the engine is selectively adapted to using a cam having a cam profile at low engine speed with a low speed of rotation, or having when the engine is suitable for high-speed rotation of the cam profile of the high-speed cam to the engine the valve is opening and closing operation. 例如,在实公平07-23526号公报中,对于低速用的凸轮和高速用的凸轮之间的转换,记载了具有转换压力油的供应和排出的转换机构的结构。 E.g., in Kokoku Publication No. 07-23526, for switching between the low speed cam and the high-speed cam, it describes a structure of the supply and discharge switching mechanism having a switching pressure oil. 此外,在特开2000-73716号公报中,记载了借助于改变凸轮轴的相位来改变发动机的阀门的开、关时间段的装置,其结构中具有转换压力油的供应和排出的转换机构。 Further, in Laid-Open Patent Publication No. 2000-73716 describes that by changing the phase of the camshaft to change the valve opening of the engine, the OFF period of the apparatus, its structure having a switching pressure oil supply and discharge switching mechanism. 还有,在实开昭58-183910号公报中,记载了在规定的发动机运转状态下停止发动机阀门的工作的所谓停缸发动机中,具有转换压力油的供应和排出的转换机构的结构。 Further, in Unexamined Patent Publication No. 58-183910 describes a valve stopping the engine operating state in the predetermined engine operating so-called stop-cylinder engine, having a switching pressure oil supply and discharge mechanism structural transformation.

在特开2000-73716号公报和实公平07-23526号公报中所记载的技术,作为转换供应和排出压力油的机构,仅仅是在把从油泵压送出来的压力油供应给油控制阀的油路中,安装了若干个油过滤器,以防止铁屑啮入油控制阀中。 Technique No. 2000-73716 Publication and Laid-Open Patent Publication Kokoku No. 07-23526 are described as a means for switching supply and discharge of the pressurized oil is supplied only to the nip from the oil pump out of the oil to the oil pressure control valve oil, mounting a plurality of the oil filter to prevent iron biting oil control valve. 此外,在实开昭58-183910号公报中,所记载的作为转换供应和排出压力油的机构的技术,是具有多台油泵,借助于在下游侧油泵的上游一侧安装油过滤器,来防止异物啮入阀门停止机构的活塞中。 Further, in Unexamined Patent Publication No. 58-183910, as the described technical means converts supply and discharge of pressure oil, having a plurality of pumps, mounted side by means of an oil filter on the upstream side of the downstream pump to preventing foreign matter into the valve stop mechanism engages the piston.

在近年来的可变气门装置中,为了降低成本,理想的是使用单独一台油泵来进行发动机各部分的润滑和油控制阀的控制,但是,当只使用一台油泵来控制油控制阀时,在油控制阀工作时,随着压力油的供应,可能会使油路内的压力下降。 In the variable valve apparatus of recent years, in order to reduce costs, it is desirable to use a separate pump to control various parts of the engine and the lubricating oil control valve, however, when only one pump to control the oil control valve , when the oil control valve to work with pressure oil supply, may cause the pressure drop in the passage. 为此,准备了蓄压器,在油控制阀工作时,利用蓄压器向转换机构供应压力油。 For this purpose, the prepared pressure accumulator when the working oil control valve, using the accumulator pressure oil supplied to the conversion means. 可是,在具有这种蓄压器的油路中,必须根据压力油压力的下降,立刻从蓄压器向压力油的油路中供应所储蓄的压力油,而且,由于油控制阀不是用电气驱动的装置,所以很容易发生由于异物的啮入而使阀的工作不正常。 However, in such a passage having a pressure accumulator, the pressure drop must be based on the oil pressure, immediately from the accumulator oil passage to supply the pressure oil in the pressure oil deposits, Further, since the oil control valve than using electrical driving means, it is easy to occur due to the foreign matter bite into the valve is not working properly.

实开昭58-183910号公报中所记载的技术,由于在蓄压器的上游侧安装了增压油泵,而且在增压油泵的上游侧安装了油过滤器,所以随着油泵的摩擦运动所产生的异物一点也没有除掉,都被引导到蓄压器里去了,蓄压器有被杂质啮入的危险。 Unexamined Publication No. Sho 58-183910 the technique described, since the upstream side of the supercharging pressure accumulator pump installed, and the pressurizing pump upstream side of the oil filter mounting, the friction with the movement of the oil pump the foreign substance is also not removed, are directed to the accumulator gone, the accumulator has the risk of being bitten impurities. 而且,在实开昭58-183910中,由于有多台油泵,导致成本增大,更进一步,由于蓄压器直接安装在增压油泵的下游,所以侵入蓄压器内的杂质,将直接受到伴随着总是用凸轮驱动的增压油泵的工作所产生的压力油的脉动的影响,由于异物在蓄压器内搅拌,蓄压器增加了发生啮入的危险。 Further, in Unexamined Patent Publication 58-183910, since more than one pump, resulting in an increase in cost, and further, since the pressure accumulator is mounted directly downstream of the booster pump, the intrusion of impurities in the pressure accumulator, will be directly affected with the ripples always operating cam driven supercharging pressure generated by an oil pump of the oil, stirring of the foreign matter in the accumulator, the accumulator increases the risk of biting. 此外,特开2000-73716号公报和实公平07-23526号公报中所记载的技术,由于没有蓄压器,在转换时油路内的压力将会降低,压力油的供应有不够的危险。 Further, Laid-Open No. 2000-73716 Technical Publication Kokoku Publication No. 07-23526 and described in, because there is no pressure accumulator, the pressure in the oil passage will be reduced at the time of conversion, there is insufficient supply pressure oil danger.

蓄压器的结构,例如,是通过克服加在活塞一侧的压力后把压力油储存起来,利用与油路之间的压力差,由活塞把所储存的压力油排出去。 Accumulator structure, e.g., by overcoming the pressure applied to the rear side of the piston of the pressurized oil stored, the pressure difference between the oil and the use, by the piston to discharge the stored pressurized oil to. 因此,在蓄压器中有活塞的摩擦运动部分,当压力油中混入异物时,就会发生卡住的问题。 Thus, there is friction in the moving parts of the piston accumulator, when the pressure oil foreign matter, the problem of jam occurs. 在以往的气门装置中,虽也设置了用于从压力油源排出来的压力油的油过滤器,以防止油过滤器和油控制阀卡死,但,根据不同的运转状态,也有给油过滤器加上分路来供应压力油的,在与蓄压器并联使用的情况下,不能很好地防止异物混入。 In the conventional valve apparatus, although also provided oil filter for discharge from the pressurized oil source of pressurized oil to prevent the oil filter and oil control valve stuck, but, depending on the operating state, but also to the oil adding shunt filters to supply pressure oil, in a case where in parallel with the accumulator used, foreign matter can not be well prevented. 特别是,在用一台油泵润滑发动机,而且要控制可变阀门控制机构时,很可能发生蓄压器卡死和可变阀门控制机构的工作不正常。 In particular, when using an engine lubricating oil pump, but also to control the variable valve control mechanism, it is likely to occur card work accumulator dead and variable valve control mechanism is not normal. 由于压力油的泄漏而发生意想不到的阀门时间段的变化和转换不灵,会导致发动机的出力降低,燃料消耗增加,噪音增大,运转性能恶化。 Due to leakage of pressure oil varies valve and unexpected conversion period occurs not working, will cause decrease in engine output, increased fuel consumption, noise increases, deteriorating the drivability.

发明内容 SUMMARY

本发明就是有鉴于上述情况而提出来的,其目的是提供一种即便是具有蓄压器的气门装置,也能防止异物混入的内燃机的气门装置。 The present invention has been made in view of the above circumstances to its object is to provide a valve device having even pressure accumulator, valve means can be prevented foreign matter of the internal combustion engine.

为达到上述目的,本发明第一方面中的内燃机的气门装置,其特征在于具有下列各部分:摇臂轴;第一摇臂,其前端与第一进气阀或者第一排气阀联结,支承在上述摇臂轴上能自由摇动,并由第一低提升凸轮驱动;第三摇臂,其前端与上述第二进气阀或者第二排气阀联结,支承在上述摇臂轴上能自由摇动,并由提升量比上述第一低提升凸轮小的第二低提升凸轮驱动;第二摇臂,它具有能与上述第一和第三摇臂连接的前端,支承在上述摇臂轴上能自由摇动,并由提升量比上述第一低提升凸轮大的高提升凸轮驱动;可变阀门控制机构,它利用从油压源通过油泵及该油泵下游侧的第一过滤器的压力油通过油路进行的供应和排出,控制上述第一和第二进气阀或者上述第一和第二排气阀的开关状况,以转换上述第二摇臂相对于上述第一摇臂和第三摇臂的连接 To achieve the above object, a first aspect of the invention a valve of an internal combustion engine, characterized by having the following components: rocker shaft; a first rocker arm, the front end of the first intake valve or an exhaust valve coupled to the first, support shaft can freely swing in the aforesaid rocker arm, driven by a first low lift cam; third arm, the front end of the second intake valve or an exhaust valve coupled to a second, it can be supported on said rocker arm shaft swingably by the lift quantity of the first low-lift cam small lower lift a second drive cam; a second rocker arm having a distal end, the support can be connected to the first and third rocker arms in said rocker arm shaft the swinging freely by a first lift amount is larger than the low lift cam driving the high lift cam; a variable valve control mechanism, which uses a first filter from a hydraulic pressure source through the pump and the pump pressure of the downstream side of the oil through the supply and discharge passage for controlling said first and second intake valve or the switching status of said first and second exhaust valve, in order to convert the second arm with respect to the first and third rocker arms rocker connection 态和分离状态;设置在上述油路的上述可变阀门控制机构的上游侧,储存向上述可变阀门控制机构供应的压力油的蓄压器;以及在上述油路的上述蓄压器的上游侧,并且设置在上述第一过滤器的下游侧的第二过滤器。 State and a disengaged state; disposed upstream of the variable valve control mechanism of the oil passage, the oil reservoir of the accumulator pressure supplied to the variable valve control mechanism; and the oil passage upstream of the accumulator side, and the second filter provided on the downstream side of the first filter.

这样,即使是具有提升量互不相同的进气阀(排气阀)和第二进气阀(第二排气阀)的,结构复杂的连接转换机构的气门装置,由于储存在蓄压器中的压力油经过第二过滤器的过滤,就不会有异物混入蓄压器内。 Thus, even having mutually different lift amount of the intake valve (exhaust valve) and a second intake valve (second exhaust valve), the complex structure of the connection switching mechanism of the valve means, since the storage in the accumulator pressure oil through the filter in the second filter, foreign matter will not have the pressure accumulator.

本发明第二方面中的内燃机的气门装置,是在第一方面所记载的内燃机的气门装置中,还具有这样的特征,即,把上述蓄压器的主体固定在汽缸盖上。 Valve operating apparatus according to a second aspect of the present invention, the valve is in a first aspect an internal combustion engine described in further has such a feature, i.e., the main body of the accumulator is fixed to the cylinder cover.

这样,就能很方便地进行蓄压器的更换和维修。 In this way, it can very easily accumulator replacement and maintenance.

本发明第三方面中的内燃机的气门装置,是在第二方面所记载的内燃机的气门装置中,还具有这样的特征,即,上述油压源是布置在汽缸体下部的单独一台油泵。 Valve operating apparatus according to the third aspect of the present invention, the valve is an internal combustion engine described in the second aspect, it is also has a feature that the separate pressure source is a pump disposed in the lower portion of the cylinder body.

这样,油泵所产生的,传递给蓄压器的压力油的脉动就能减少。 Thus, the generated pump, the pulsation transmitted to the pressure accumulator of the pressure oil can be reduced.

本发明第四方面中的内燃机的气门装置,是在第三方面所记载的内燃机的气门装置中,还具有这样的特征,即,上述第二过滤器设置在这样的位置上,使得在上述第二过滤器与上述蓄压器之间的上述油路的长度,比在上述油泵与上述第二过滤器之间的上述油路的长度短。 A fourth aspect of the present invention, an internal combustion engine valve, the valve is in an internal combustion engine described in the third aspect further has a feature that the second filter is provided at such a position, so that the first the length of the oil passage between the filter and the two pressure accumulator, shorter than the length of the oil passage between the oil pump and the second filter.

这样,就能进一步有效地防止在油路内产生的异物混入蓄压器内。 Thus, foreign matter can be further effectively prevented generated in the oil mixed in the pressure accumulator.

附图说明 BRIEF DESCRIPTION

图1是具有本发明的一个实施例的气门装置的内燃机的汽缸盖的平面图;图2是图1中要部的放大图;图3是沿图2中的III-III线的向视图;图4是沿图2中的IV-IV线的向视图;图5是沿图2中的VV线的向视图;图6是活塞支承部分的断面图;图7是从凸轮轴一侧看的摇臂的立体图;图8是从进气阀一侧看的摇臂的立体图;图9是表示油压系统的内燃机的要部的立体图;图10是表示蓄压器安装情况的断面图;图11是油压系统的示意油路图。 FIG 1 is a plan view of a cylinder internal combustion engine valve device according to one embodiment of the present invention having a cap; FIG. 2 is an enlarged view of an essential portion of Figure 1; Figure 3 is a view III-III line in in FIG. 2; FIG. 4 is a view taken along line in FIG. 2 IV-IV; FIG. 5 is a view taken along line VV of FIG. 2; FIG. 6 is a sectional view of the piston support portion; FIG. 7 is viewed from the side of rocker cam a perspective view of an arm; FIG. 8 is a perspective view of the rocker arm viewed from a side of the intake valve; FIG. 9 is a perspective view showing portions of an internal combustion engine of the hydraulic system; FIG. 10 is a sectional view showing installation of the accumulator; FIG. 11 It is a schematic diagram of a hydraulic oil system.

具体实施方式 detailed description

图1是具有本发明的一个实施例的气门装置的内燃机的汽缸盖的平面图;图2是图1中要部的放大图;图3是沿图2中的III-III线的向视图;图4是沿图2中的IV-IV线的向视图;图5是沿图2中的VV线的向视图;图6是活塞支承部分的断面图;图7是从凸轮轴一侧看的摇臂的立体图;图8是从进气阀一侧看的摇臂的立体图;图9是表示油压系统的内燃机的要部的立体图;图10是表示蓄压器安装情况的断面图;图11是油压系统的示意油路图。 FIG 1 is a plan view of a cylinder internal combustion engine valve device according to one embodiment of the present invention having a cap; FIG. 2 is an enlarged view of an essential portion of Figure 1; Figure 3 is a view III-III line in in FIG. 2; FIG. 4 is a view taken along line in FIG. 2 IV-IV; FIG. 5 is a view taken along line VV of FIG. 2; FIG. 6 is a sectional view of the piston support portion; FIG. 7 is viewed from the side of rocker cam a perspective view of an arm; FIG. 8 is a perspective view of the rocker arm viewed from a side of the intake valve; FIG. 9 is a perspective view showing portions of an internal combustion engine of the hydraulic system; FIG. 10 is a sectional view showing installation of the accumulator; FIG. 11 It is a schematic diagram of a hydraulic oil system.

如图1所示,进气侧的摇臂轴2和排气侧的摇臂轴3平行地固定在汽缸盖1上。 1, the intake side rocker shaft 2 and the exhaust side rocker shaft 3 in parallel is fixed on the cylinder head 1. 在摇臂轴2和摇臂轴3之间,在汽缸盖1上支承着能自由转动的凸轮轴4。 Between the rocker shaft 2 and the rocker arm shaft 3, the cylinder head 1 can be rotatably supported camshaft 4. 图中所示的内燃机是直列式四汽缸内燃机,其结构为每一个汽缸上各设有两个进气阀和两个排气阀。 The internal combustion engine is shown in FIG inline four-cylinder internal combustion engine, each having the structure provided with two intake valves and two exhaust valves on each cylinder.

如图1~图5所示,在摇臂轴2上分别支承着与各汽缸相对应的,能自由摇动的第一摇臂5和第三摇臂6,在第一摇臂5与第三摇臂6之间的摇臂轴2上,支承着能自由摇动的,T字形的第二摇臂7。 1 to 5, the rocker arm shaft 2 are supported with each of the cylinders corresponding to the first rocker arm 5 can freely swinging the swing arm 6 and the third, the first and third rocker arms 5 between the rocker arm on the rocker shaft 62, supported free to swing, the second T-shaped rocker arm 7. 在第一摇臂5和第三摇臂6上,形成了作为连接转换机构的圆筒部分8,使得第二摇臂7的T字形的前端7a、7b能连接在该圆筒部分8上。 The first and third rocker arms 6 swing arm 5 is formed as a cylindrical portion connected to the conversion means 8, such that the second arm of the T-shaped distal end of 7a 7, 7b can be connected to the cylindrical portion 8.

第一摇臂5的前端与第一进气阀9关联,第一摇臂5的底端由第一低提升凸轮10驱动。 5 associated with the first rocker arm 9 and the front end of the first intake valve, the bottom end of the first arm 5 by a first low lift cam 10 is driven. 第三摇臂6的前端与第二进气阀11关联,第三摇臂6的底端由提升量比第一低提升凸轮10的提升量小的第二低提升凸轮12驱动。 Associated with the front end of the third arm 11 of the second intake valve 6, the bottom end of the third arm 6 by a lift quantity of a first low lift cam 10 is smaller lift amount of the second cam 12 drives low lift. 即,第一进气阀9和第二进气阀11分别以不同的规定时间段,不同的提升量进行开、关。 That is, the first intake valve 9 and the second intake valve opening 11 respectively, at different predetermined time periods, different lift amount, off. 另外,第二低提升凸轮12可以选择使进气阀11实际上处于停止状态的形状。 Further, the second cam 12 can choose a low lift of the intake valve 11 is actually in the shape of a stopped state.

如图3、图4和图7、图8所示,在第一摇臂5和第三摇臂6上分别形成了圆筒部分8,在各圆筒部分8上形成了与第二摇臂7的T字形的前端7a、7b相对的开口部分13a、13b。 3, FIG. 4 and FIG. 7, FIG. 8, the first rocker arm 5 and rocker arms 6 are formed a third cylindrical portion 8, and the second rocker arm is formed on each cylindrical portion 8 7a T-shaped front end 7, 7b opposite to the opening portions 13a, 13b. 在圆筒部分8中有能自由滑动的活塞14a、14b,活塞14a、14b除了具有与圆筒部分8的内壁滑动接触的圆柱部分15a、15b之外,还形成了与圆柱部分15a、15b上部连续,侧面切出开口部分13a、13b的缺口部分16a、16b。 There can slide freely in the cylindrical portion 8 of the piston 14a, 14b, pistons 14a, 14b in addition to having a cylindrical sliding contact with the inner wall of the cylindrical portion 8 of the portion 15a, beyond 15b, it is also formed with an upper cylindrical portion 15a, 15b continuous, side cutout portion 13a, 13b of the cut-out opening portions 16a, 16b.

活塞14a、14b由回程弹簧17a、17b压向下方,平时,缺口部分16a、16b处于朝向开口部分13a、13b的状态(图4的状态)。 Pistons 14a, 14b by a return spring 17a, 17b is downwardly pressed, usually, the notch portions 16a, 16b in the state (state of FIG. 4) toward the opening portion 13a, 13b of. 在摇臂轴2的轴心部分形成油路18,并由后述的压力油供应机构定时供应压力油。 An oil passage 18 formed in the axial center portion of the rocker shaft 2, by the pressure oil supply mechanism described later, the timing of oil supply pressure. 供应给油路18的压力油从通道19供应给圆筒部分8,由于向圆筒部分8中供应了压力油,活塞14a、14b就能克服回程弹簧17a、17b的压力而上升。 Supplied to the pressure oil passage 18 is supplied from the passage 19 to the cylindrical portion 8, since the pressure oil supplied to the cylindrical portion 8, the piston 14a, 14b can overcome the return spring 17a, 17b of the pressure rise. 由于供应压力油而使得活塞14a、14b上升了,于是圆柱部分15a、15b便处于朝向开口部分13a、13b的状态(图3的状态)。 Since the supply pressure oil to the piston 14a, 14b rise, so the cylindrical portion 15a, 15b toward the opening portion 13a is then, (state of FIG. 3) the state 13b.

如图1~图5所示,第二摇臂7的T字形前端7a、7b与开口部分13a、13b的内部关联,第二摇臂7的底端由高提升凸轮20驱动。 As shown in FIGS. 1 to 5, the second arm of the T-shaped front end 7. 7A, 7b associated with the interior of the opening portion 13a 13b,, the bottom end of the second arm 7 is driven by the high lift cam 20. 高提升凸轮20的提升量比第一低提升凸轮10和第二低提升凸轮12的提升量大,并具有包含第一低提升凸轮10和第二低提升凸轮12的凸轮外轮廓。 High lift cam 20 lift quantity of a first low lift cam 10 and the second lift amount low lift cam 12 and a cam having an outer profile comprising a first low lift cam 10 and second cam 12 of the low lift.

在活塞14a、14b被回程弹簧17a、17b压向下方,缺口部分16a、16b朝向开口部分13a、13b的状态(不供应压力油的状态)下,用高提升凸轮20驱动第二摇臂7时,第二摇臂7的T字形的前端7a、7b便与开口部分13a、13b内部的缺口部分16a、16b相对。 The piston 14a, 14b by return spring 17a, 17b pressed downward, the notch portions 16a, 16b toward the opening portion 13a, 13b in a state (state of the pressure oil is not supplied), driven by a high lift cam 20 the second arm 7:00 , the second rocker arm 7 of the T-shaped distal end 7a, 7b and then the opening portion 13a, 13b of the inner notch portions 16a, 16b relative. 因此,在第二摇臂7由高提升凸轮20驱动而摇动的情况下,第二摇臂7的前端7a、7b便进入缺口部分16a、16b中(离开的状态),于是第二摇臂7的摇动就不再传递给第一摇臂5和第三摇臂6了。 Thus, in the case where the second rocker arm 7 by the high lift cam 20 and the driving of the shaking, the front end of the second rocker arm. 7A to 7, 7b will enter the notch portion 16a, (exiting state) 16b, the second arm 7 so shaking no longer transmitted to the first rocker arm 5 and the third arm 6.

因此,由于开放了圆筒部分8的压力油,第一进气阀9和第二进气阀11,就能借助于第一摇臂5和第三摇臂6的摇动,分别以规定的时间以不同的提升量开关。 Accordingly, since the opening of the cylindrical portion 8 of the oil pressure, the first intake valve 9 and the second intake valve 11, can by means of a first rocking arm 5 and the third arm 6, respectively, at a predetermined time a switch to a different lift amount.

当向圆筒部分8供应压力油,活塞14a、14b克服了回程弹簧17a、17b的弹力而上升,圆柱部分15a、15b处于朝向开口部分13a、13b时,第二摇臂7的T字形的前端7a、7b便与开口部分13a、13b内部的圆柱部分15a、15b相对。 When the pressure of oil supplied to the cylindrical portion 8, the piston 14a, 14b against the elastic force of the return spring 17a, 17b rises, the cylindrical portion 15a, 15b in the portion toward the opening 13a, while 13b, a T-shaped end of the second swing arm 7 7a, 7b and then opening portions 13a, 15a inside the cylindrical portion 13b, 15b relative. 于是,在第二摇臂7由高提升凸轮20驱动而摇动的情况下,第二摇臂7的T字形的前端7a、7b便压接在圆柱部分15a、15b上(连接状态),于是第二摇臂7的摇动就能通过圆筒部分8传递给第一摇臂5和第三摇臂6了。 Thus, in the case where the second rocker arm 7 by the high lift cam 20 swings the driving, the second rocker arm 7 of the T-shaped distal end 7a, 7b will be pressed against the cylindrical portion 15a, upper 15b (connected state), then the second two swinging the swing arm 7 can be transmitted to the first rocker arm 5 and the third cylindrical portion 6 through 8.

因此,借助于向圆筒部分8供应压力油,第一摇臂5和第三摇臂6就因第二摇臂7的摇动而摇动,第一进气阀9和第二进气阀11便按照高提升凸轮20的凸轮轮廓,同时以大的提升量进行开关。 Thus, by supplying oil pressure to the cylindrical portion 8, the first rocker arm and the third arm 5 by swinging on the second rocker arm 6 oscillatingly 7, the first intake valve 9 and the second intake valve 11 will according to the high lift cam profile of the cam 20, while switching a large lift amount.

向圆筒部分8供应和切断压力油,即,第二摇臂7和第一摇臂5与第三摇臂6之间的连接状态和离开状态的转换,是根据车辆的行驶状态(即内燃机的旋转速度)预先设定的。 Supplying and cutting off the pressure oil to the cylindrical portion 8, i.e., the second rocker arm 7 and the connection state between the first rocker arm and the third arm 5 and 6 convert the separated state, based on the running state of the vehicle (i.e., an internal combustion engine rotational speed) set in advance.

例如,在内燃机旋转速度低的情况下,切断向圆筒部分8的压力油供应,于是,由于第一摇臂5和第三摇臂6的摇动,第一进气阀9和第二进气阀11便分别以规定的时间,但以不同的提升量进行开关。 For example, at a low engine rotational speed, the cutting oil pressure supplied to the cylindrical portion 8, then, since the first swing arm 5 and the third arm 6, the first intake valve 9 and the second intake then the valve 11 at a predetermined time, respectively, but with a different amount of lift switch. 这样,便促进了紊流,强化了燃烧过程。 In this way, it promotes the turbulent flow, strengthen the combustion process. 此外,在内燃机的旋转速度高的情况下,向圆筒部分8供应压力油,于是,由于第二摇臂7的摇动,使得第一摇臂5和第三摇臂6摇动,第一进气阀9和第二进气阀11便以很大的提升量同时进行开关。 Further, at high rotational speed of the engine, the cylindrical portion 8 supplies the oil pressure, then, since the second arm 7 of the shaking, such that the first rocker arm 5 and the third rocker arms 6 swing, the first intake second intake valve 9 and the valve 11 will be to a large lift amount simultaneously switch. 这样,确保了大量的进气,增大了输出功率。 Thus, to ensure a large amount of intake air increases the power output.

如图3和图7所示,在第一摇臂5的底端与第一低提升凸轮10压接的部分上,设有第一从动辊21,第一摇臂5的底端处于通过第一从动辊21以最小限度的阻力压接在转动的第一低提升凸轮10的状态下。 3 and FIG. 7, on the bottom end of the first rocker arm 5 and the first low lift cam 10 press-contact portion, the first driven roller 21 is provided, at the bottom end of the first rocker arm 5 by the first driven roller 21 is pressed against the minimal resistance of the first state of rotation of the low lift cam 10. 如图7所示,第一从动辊21的外辊26借助于许多滚针轴承25而能自由转动,并与第一低提升凸轮10滚动接触。 7, the first driven roller 21 and outer roller 26 by means of a needle bearing 25 and a number of freely rotatable and in contact with the low lift cam 10 of the first scroll.

如图4和图7所示,在第三摇臂6的底端与第二低提升凸轮12压接的部分上,设有第三从动辊24,第三摇臂6的底端处于通过第三从动辊24毫无阻力地压接在转动的第二低提升凸轮12的状态下。 4 and FIG. 7, the third arm 6 at the bottom end of the second low-lift cam 12 on the crimping portion, the third driven roller 24 is provided, at the bottom end of the third arm 6 by third driven roller 24 without resistance in the second low-pressure contact state where the rotation of the cam 12 to lift. 如图7所示,第三从动辊24是由内辊22和外辊23构成的(双环状滑动辊),内辊22与外辊23处于同轴线状态,以互相能自由转动的方式嵌合,外辊23与第二低提升凸轮12滚动接触。 7, a third driven roller 24 by the inner roller 22 and outer roller 23 constituted (bicyclic slide roller), the inner roller 22 and outer roller 23 in a coaxial state to another freely rotatable fitted, the outer roller 23 and the second rolling contact with the low lift cam 12. 对内辊22的表面,例如,进行润滑表面处理。 The inner surface of the roller 22, for example, the surface lubrication treatment.

如图5和图7所示,在第二摇臂7的底端与高提升凸轮20压接的部分上,设有第二从动辊27,第二摇臂7的底端处于通过第二从动辊27毫无阻力地压接在转动的高提升凸轮20的状态下。 5 and 7, the bottom end of the second rocker arm 7 and the high lift cam 20 on the crimping portion, the second driven roller 27 is provided, at the bottom end of the second rocker arm 7 via a second driven roller 27 without resistance in a pressure contact state where rotation of the high lift cam 20. 第二从动辊27由通过许多滚针轴承28能自由转动的外辊29构成,而外辊29与高提升凸轮20滚动接触。 The second driven roller 27 is constituted by a needle bearing 28 by a number of freely rotatable outer roller 29, the outer roller 29 in contact with the high-lift cam 20 rolling.

另外,第一从动辊21也可以和第三从动辊24一样,由内辊22和外辊23构成(双环状滑动辊),并能使外辊23与第一低提升凸轮10滚动接触。 Further, the first driven roller 21 may be the same and the third driven roller 24 constituting (bicyclic slide roller) by the inner roller 22 and outer roller 23 and outer roller 23 enables the low lift cam 10 and the first rolling contact.

此外,如图1所示,在排气侧的摇臂轴3上支承着能自由摇动的排气摇臂31a、31b,这些排气摇臂31a、31b分别由排气凸轮驱动。 Further, as shown in Figure 1, can be supported swingable exhaust rocker arm 31a, 31b on the exhaust side rocker shaft 3, the exhaust rocker arms 31a, 31b are respectively driven by the exhaust cam.

不过,例如,由高提升凸轮20提升的第一进气阀9和第二进气阀11的提升量都设定得很大,而由第一低提升凸轮10所提升的第一进气阀9的提升量,设定得比由高提升凸轮20提升的提升量小一些,进而,由第二低提升凸轮12所提升的第二进气阀11的提升量,与由高提升凸轮20所提升的提升量相比,就设定得更小。 However, for example, by the high lift cam 20 lift the first intake valve 9 and the second lift amount of the intake valve 11 are set large, and a low lift by the first cam 10 of the first intake valve lift 9 lift amount is set smaller than that of a high lift cam lift amount of the lift of some 20, and further, a second low-lift cam 12 is lifted a second intake valve lift amount of 11, by the high lift cam 20 the amount of the hoisting compared to set smaller.

因此,当向圆筒部分8供应压力油(处于连接状态下)时,与第一摇臂5和第三摇臂6的摇动相比,第二摇臂7的摇动将使得第一进气阀9和第二进气阀11同时能以很大的提升量进行开关,即,高提升凸轮20的提升量,比第二低提升凸轮12和第一低提升凸轮10的提升量大。 Thus, when the cylindrical portion 8 is supplied to the oil pressure (in a connected state) when compared to the first swinging arm 5 and 6, the third arm, the second rocker arm 7 will swing such that the first intake valve 9 and the second intake valve 11 can be switched at the same time a large amount of lift, i.e., a high lift cam 20 lift amount, than the low lift cam 12 and the second lift amount of a first low lift cam 10. 因此,便在第二低提升凸轮12与第三从动辊24之间产生很大的间隙,并且在第一低提升凸轮10与第一从动辊21之间产生很大的间隙的状态下进行运转。 Thus state, they have a great gap between the second low lift cam 12 and the third driven roller 24, and a first low lift cam 10 generates a great gap between the first driven roller 21 and in the operated.

第一摇臂5,第二摇臂7和第三摇臂6始终被压向凸轮一侧,但,具体的说明就省略了。 The first rocker arm 5, the third arm and the second arm 7 is always pressed against the cam 6 side, however, specific description is omitted. 在向圆筒部分8供应压力油之后,由于第二摇臂7的摇动而使第一摇臂5和第三摇臂6摇动,从而使得第一进气阀9和第二进气阀11处于开、关的状态,当圆筒部分8的压力油供应中断时,即,转换进气状态时,由第二摇臂7所传递的摇动被断开,而第一摇臂5和第三摇臂6都借助于弹簧的压力,向第一低提升凸轮10和第二低提升凸轮12一侧摇动。 After the oil supply pressure to the cylindrical portion 8, since the first swing arm 5 and the third arm 6 swing the second rocker arm 7, so that the first intake valve 9 and the second intake valve 11 is opening and closing state when the pressure oil supply interruption cylindrical portion 8, i.e., the conversion intake state, the transmission 7 is shaken off by the second arm and the first rocker arm 5 and the third 6 by means of a compression spring the arms are to enhance the swing cam 12 side to the first low lift cam 10 and the second low.

此时,例如,在最大提升量时,由于第二低提升凸轮12与第三从动辊24之间的间隙变得很大,所以当第一摇臂5和第三摇臂6由于弹簧的压力而向第一低提升凸轮10和第二低提升凸轮12一侧摇动时,第三从动辊24和第一从动辊21就有可能会砸在第二低提升凸轮12和第一低提升凸轮10上。 In this case, for example, when the maximum lift amount, since the second low lift cam 12 becomes large and the gap between the third driven roller 24, so that when the first rocker arm and the third arm 5 due to the spring 6 when the lifting pressure swing cam 12 side to the first low lift cam 10 and a second lower, third driven roller 24 and the first driven roller 21 is likely to be hit in the second low lift cam 12 and the first low lifting cam 10.

第一从动辊21与第一低提升凸轮10之间只有很小一点间隙,作用的力量不会很大,但是,由于第三从动辊24与第二低提升凸轮12之间的间隙很大,在砸上去的时候,作用的力量就很大。 Only a very small between the first driven roller 21 and the lower lift cam 10 forces the first small gap, the effect is not great, however, because the third gap 24 between the driven roller 12 is a low lift cam and a second large, hit up when the power of acting is very substantial.

因此,把第三从动辊24的结构做成具有内辊22和外辊23的双环状滑动辊。 Thus, the structure of the third driven roller 24 is made having a double annular inner roller 22 and slide roller 23 of the outer roller. 由于把第三从动辊24的结构做成双环状滑动辊,提高了冲击强度,即使万一第三从动辊24用很大的力量砸在第二低提升凸轮12上,由于力量是通过面积上的压力传递的,所以不会产生变形或压痕,外辊23没有破损的危险。 Since the structure is made of the third follower roller 24 slide roller bicyclic, improved impact strength, even in the event the third driven roller 24 with great force to hit in the second low-lift cam 12, since power is by pressure on the area of ​​delivery, thus no deformation or indentation, the outer roller 23 is no danger of breakage.

因此,这是一种考虑了第三摇臂6的压接部分对于旋转的第二低提升凸轮12的刚性和转动阻力的结构。 Accordingly, it is a consideration of the third arm portion 6 is crimped to the second rotating low lift cam 12 rotational resistance and rigidity of the structure.

在上述实施例中,举例说明了在设有与提升量大的第二摇臂7相对的,两种不同种类的提升量小的第一摇臂5和第三摇臂6的内燃机中,把提升量的差别大的第三从动辊24做成滑动辊的结构,但,本申请的发明也可以把第一从动辊21做成滑动辊的结构。 In the above embodiment, exemplified is provided in the second rocker arm 7 opposite the lift amount, two different kinds of small lift amount of the engine the first rocker arm 5 and the third arm 6, the large difference in lift amount of the third driven roller 24 is made slide roller configuration, but, the application of the present invention may be made of the structure of the first driven roller 21 of the slide roller.

此外,如本申请的申请人已经申请的特开2001-41017专利文献中所述,即使是在转换提升量不同的两种摇臂结构的一个进气阀型式的内燃机中,也能使用本申请的发明中的,把压接在提升量小的一侧的凸轮上的辊子作为第一从动辊做成滑动辊的结构。 Furthermore, as the applicant of the present application has Laid-Open Patent No. 2001-41017 described in the literature, even in a converter type internal combustion engine intake valve rocker structure of two kinds of different amounts of lift in the present application can also be used in the invention, the crimping on one side of the cam lift amount is small roller structure as driven roller made of a first roller slide.

如图8所示,由于活塞14在上部形成了缺口部分16,所以回程弹簧17就布置在偏离活塞14的轴线中心的位置上。 8, since the piston 14 in an upper portion of the notch 16 is formed, the return spring 17 is disposed at a position offset from the axis to the center of the piston 14. 这样,当活塞14绕着中心轴线转动时,回程弹簧17就没有像设计那样大的压力了。 Thus, when the rotation about the center axis of the piston 14, the return spring 17 is designed not as large as the pressure. 因此,在本实施例中,如图6、图7所示,具有活塞14的止转机构。 Accordingly, in the present embodiment, FIG. 6, FIG. 7, the piston 14 having a detent mechanism.

如图2、图6、图8所示,在形成活塞14的缺口部分16的部位的外圆周上,形成了缺口面34,而在第一摇臂5和第三摇臂6的圆筒部分8上形成了与缺口面34相对应的凸部35(参照图2)。 2, FIG. 6, FIG. 8, formed on the outer circumferential portion of the cutout portion 16 of the piston 14 is formed a notch surface 34 in the first rocker arm 5 and the cylindrical portion 6 of the third arm forming a convex portion 35 (see FIG. 2) corresponding to the notches 34 on the surface 8. 缺口面34在避开圆筒部分8的开口部分13,并且避开活塞14的背面的位置上形成,而销子36在轴向布置成与缺口面34接触嵌合的状态。 Avoiding the notch surface 34 of the cylindrical portion 8 of the opening portion 13, and to avoid the formation position on the rear surface of the piston 14, and the pin 36 is arranged in contact with the notch surface 34 fitted in the axial direction. 销子36用压入等方式固定在凸部35上,并且布置成其中心轴线沿着摇臂轴2与水平面平行的平面延伸。 By press-fitting the pin 36 fixed on the convex portion 35, and arranged with its central axis parallel to the horizontal plane 2 extending along the rocker shaft.

作为止转销,也可以把销子36布置成沿着摇臂轴2与水平平面成直角等的方向上,但是,在把销子36布置在成直角等的方向上时,必须在活塞14下部的圆柱部分15上形成销子36的嵌合部分。 As the locking pin, the pin 36 may be arranged in a direction at right angles to the rocker arm shaft 2 and the like along a horizontal plane, however, when the pin 36 is disposed in a direction at right angles or the like, the piston 14 must be forming the fitting portion 36 of the pin 15 on the lower portion of the cylindrical portion. 由于圆柱部分15是嵌合在圆筒部分8中滑动,要防止油泄漏的部位,所以当在圆柱部分15上形成销子36的嵌合部分时,油就有泄漏的危险。 Since the cylindrical portion 15 is slidably fitted in the cylindrical portion 8, to prevent oil leakage site, the fitting portion when the pin 36 is formed on the cylindrical portion 15, there is risk of leakage of oil. 因此,还是把销子36的中心轴线布置成与沿着摇臂轴2的水平面平行的平面上。 Therefore, also the central axis of the pin 36 is disposed along a plane parallel to the horizontal surface of the rocker shaft 2.

在由第二摇臂7的摇动而使第一摇臂5和第三摇臂6摇动的情况下,从第二摇臂7一侧受到载荷最大的部位,是活塞14的背面。 In the case where the second rocker arm by the rocking arm 5 so that the first and third rocker arms 7 of the shaking 6, 7 from the side of the second rocker arm being largest load portion, is a rear piston 14. 因此,把销子36布置在避开活塞14的背面的倾斜的位置上。 Thus, the pin 36 is disposed in the rear surface is inclined away from the piston 14 position. 此外,销子36固定在避开圆筒部分8的开口部分13的位置的凸部35上。 Further, the cylindrical pin 36 is fixed in the opening to avoid the protrusion portion 13 of the position 35 of portion 8. 这样,就不会阻碍第二摇臂7的前端7a、7b从开口部分13向活塞14一侧移动,此外,还能通过活塞14的整个背面来传递摇动力。 Thus, the second rocker arm does not obstruct the front end 7a 7, 7b to move the piston 13 from the opening portion 14 side, in addition, the power can be transmitted by shaking the entire back surface of the piston 14.

缺口面34的形成一直到圆柱部分15的中间部分为止,由销子36来防止活塞14的脱出。 It has a notch surface 34 until the intermediate portion of the cylindrical portion 15, the pin 36 by the piston 14 to prevent prolapse. 此外,如图2、图8所示,第一摇臂5和第三摇臂6上的圆筒部分8的凸部35在同一个方向上形成,活塞14的缺口面34布置在同一个方向,与销子36呈平行的状态。 Further, in FIG. 2, FIG. 8, the convex portion 6 on the cylinder 5 and the first rocker arm 35 of the third arm portion 8 in the same direction is formed, the notch 14 of the surface of the piston 34 is arranged in the same direction , with the pin 36 in a parallel state. 这样,能使得第一摇臂5和第三摇臂6的活塞14通用化,还能降低零件的成本,防止在安装时装错。 Thus, the first rocker arm 5 can be such that the piston 14 and the third arm 6 is universal, but also reduce the cost of parts, to prevent the error in mounting fashion.

另外,在进气侧的摇臂轴2上,支承着每一个汽缸一根的第一摇臂5、第三摇臂6和第二摇臂7,在第一摇臂5和第三摇臂6上,装备了具有圆筒部分8和活塞14的转换机构。 Further, on the intake side rocker shaft 2, each cylinder supports a first rocker arm 5, the third arm 6 and second rocker arms 7, the first rocker arm and the third arm 5 in 6, 8 and equipped with a conversion mechanism portion 14 having a cylindrical piston. 这样,进气侧的阀门开关机构就比排气侧的阀门开关机构复杂,而且重量也增加了。 Thus, the intake side valve mechanism to switch the valve switch mechanism more complicated than the exhaust side, and the weight also increases.

因此,如图1所示,进气侧的摇臂轴2的直径D1要比排气侧的摇臂轴3的直径D2大(例如,大10%左右)。 Thus, as shown, the diameter D1 than the diameter of the exhaust rocker shaft 2 side of the intake side rocker shaft 3 large D2 (e.g., about 10%) 1. 这样,就能确保与所增加的重量相匹配的刚性,提高气门系统的动力特性。 In this way, we can ensure that the increase in weight matched rigidity and improve the dynamic characteristics of the valve system. 此外,通过增大摇臂轴2的直径D1,能使油路18的内径也增大,从而能减小压力油流过油路18时的压力损失,提高转换机构的性能。 Further, by increasing the diameter D1 2 is the rocker shaft, the inner diameter of passage 18 can be increased, which can reduce the pressure oil flows through the oil passage 18 with a pressure loss and improve the performance of the converter means.

下面,根据图9和图11说明向摇臂轴2的油路18供应和排出压力油的机构,即,圆筒部分8的活塞14的驱动机构(可变阀门控制机构)。 Next, FIGS. 9 and 11 illustrate a discharge mechanism 18 and the pressure oil supply, i.e., the cylindrical portion 8 of the piston driving mechanism 14 (variable valve control mechanism) to the oil passage according to the rocker arm shaft 2.

在汽缸盖1的端部一侧,形成了从布置在气缸体下部的,单独一台油泵41(油压源)(参照图11)排出来的压力油通过的油路42,在油路42上设有控制向油路18供应和排出压力油的油控制阀43(可变阀门控制机构)。 One end portion of the cylinder head 1 is formed from a passage disposed in the lower portion of the cylinder body, a separate oil pump 41 (hydraulic pressure source) (see FIG. 11) through the pressure oil discharged from the 42, the passage 42 It is provided to control the supply of pressure oil passage 18 and the discharge oil control valve 43 (variable valve control mechanism). 还设置了从油控制阀43的上游侧的油路42分叉出来的蓄压油路44,并且把蓄压器45连接在蓄压油路44上。 Also provided control valve 43 from the oil passage 42 branches off the upstream side of the accumulator oil passage 44 and the accumulator 45 is connected to the accumulator oil passage 44. 蓄压器45作为一个部件固定在汽缸盖1上。 Accumulator 45 as a member fixed to the cylinder head 1.

这样,就把蓄压器45和油泵41布置成隔开距离,传递给蓄压器45的,随着油泵的排油而产生的压力油的脉动减小了,万一有异物混入蓄压器45内部,由于减轻了因压力油的脉动而造成的蓄压器45内部的油的搅拌,所以能防止在蓄压器中产生刮痕。 Thus, put the pressure accumulator 45 and the pump 41 arranged at a distance, is transmitted to the accumulator 45, the oil discharge pump with pulsation generated by the oil pressure is reduced, if a contaminant accumulator 45 inside, since the pressure accumulator by reducing the fluctuating pressure caused by agitation of oil inside the oil 45, it is possible to prevent scratches on the accumulator.

在油控制阀43的上游侧,在蓄压油路44的分叉部分上游的油路42中,设置了第二过滤器46。 On the upstream side of the oil control valve 43, the oil passage in the bifurcated portion 44 upstream of the accumulator oil passage 42, the second filter 46 is provided. 图10中的标号47是设置在油泵41的排油侧附近的第一过滤器,标号48是加在油泵41上的分叉的旁通油路,用以安装图中未表示的安全阀。 Reference numeral 47 in FIG. 10 is a first filter disposed in the vicinity of the oil discharge side of the oil pump 41, reference numeral 48 is applied to the pump 41 a bypass passage diverging to safety valve not shown in FIG.

另外,如图11所明确表示的,第二过滤器46布置在这样的位置上,即,从油路42与蓄压油路44的分叉点到第二过滤器46的排油侧的油路的长度,要比从油泵41的排油侧到第二过滤器46的进油侧的油路的长度短。 Further, as shown in FIG 11 clear, the second filter 46 is disposed in such a position, i.e., from the oil passage 42 and the accumulator oil passage 44 to the second branch point filter drain 46 side of the oil the length of the road, than the oil pump 41 from the discharge side to the short length of the second filter into the oil passage 46 side. 这样,在布置了第二过滤器46时,由于缩短了从油路42与蓄压油路44的分叉点到第二过滤器46的排油侧的油路的长度,所以随着油路长度的增加而在所形成的油路中没有除掉的异物的量就减少了,因而能更加有效地防止在油路内产生的异物混入蓄压器45内。 Thus, when the second filter 46 is arranged, by shortening the length of the oil passage from the oil passage 42 and the accumulator oil passage 44 to the second branch point filter drain 46 side, so as the passage the amount of foreign matter increases the length of the oil passage formed in the removed not reduced, and thus can more effectively preventing foreign matter generated in the oil passage 45 is mixed within the pressure accumulator.

如图10所示,蓄压器45具有沿垂直方向固定在汽缸盖1上的筒状主体51,在主体51中装有能自由滑动的,用弹簧52向下方推压的活塞53。 As shown, the accumulator 45 has a vertically fixed to the cylinder head of the piston 51 on the tubular body 1, provided with slide freely in the body 51, is pressed downward by a spring 52 in 5310. 弹簧52的上部设有弹簧座54和弹性挡环55,弹簧52处于容纳在主体51内部的状态下。 An upper spring seat 52 is provided with a spring 54 and a snap ring 55, the spring 52 is in a state housed inside body 51.

在主体51的下部形成了螺纹部分56,把螺纹部分56拧入汽缸盖1的螺孔部分57中,蓄压器45就固定在汽缸盖1上了。 In the lower body 51 is formed a threaded portion 56, the threaded portion 56 screwed into the screw hole of the cylinder head 1, the portion 57, the accumulator 45 is fixed in the cylinder head 1. 当蓄压器45固定在汽缸盖1上时,主体51上部的一部分处于从汽缸盖1的上面凸出来的状态。 When the accumulator 45 is fixed to the cylinder head 1, the upper portion of the main body portion 51 is protruded above from the state 1 to the cylinder head. 把主体51固定在汽缸盖1上,使蓄压油路44与主体51连通,再向活塞53的下侧供应压力油,压力油便克服弹簧52的推力,活塞53就上升,于是压力油便储存在主体51内。 The main body 51 is fixed to the cylinder head 1, so that the accumulator oil passage 44 communicates with the main body 51, again the lower side supply oil pressure of the piston 53, the oil pressure will overcome the force of the spring 52, the piston 53 rises, so will the pressure oil 51 stored in the body.

汽缸盖1的上部设有盖子61,为了捕集烟雾,在盖子61内部设有挡板62和平板63。 The upper portion of the cylinder head 1 is provided with a cover 61, for collecting mist, inside the cap 61 is provided with baffle plates 62 and 63. 并且,平板63处于从汽缸盖1的上面凸出来的主体51上部的正上方的状态。 Further, the plate 63 is in a state from the cylinder head 51 immediately above the upper portion of the main body 1 projecting to the above. 这样,万一弹性挡环55脱落了,弹簧座54、弹簧52和活塞53也会撞在平板63上,可防止它们向外飞散。 Thus, if the snap ring 55 off, and the spring seat 54, spring 52 and the piston 53 will hit the plate 63, are prevented from scattering outward.

而且,主体51的上部与平板63之间的间隙S1设定得比螺纹部分56的长度S2短。 Furthermore, the gap S1 between the upper plate 63 and the body 51 is set shorter than the length of the threaded portion 56 of S2. 这样,万一主体51拧入汽缸盖1中的螺纹松动了,主体51向拔出的方向(上方)移动,在螺纹部分56完全拧开之前,主体51的上部就压接在平板63上了,主体51就不会脱出来。 Thus, if the cylinder head body 51 screwed loose thread 1, the body 51 is pulled in the direction of movement (upward), before the threaded portion 56 is fully unscrewed, on the upper portion of the body 51 pressed against the plate 63 of the , the body 51 will not come off. 这样,油路42或者蓄压油路44就不会向外部敞开。 Thus, the accumulator passage 42 or the oil passage 44 will not open to the outside.

由于蓄压器45的主体51用下部的螺纹部分56固定在汽缸盖1上,即使在固定部分上产生漏油等情况,也不会泄漏到外部去。 Since the pressure accumulator 45 is threaded body 51 a lower portion 56 fixed to the cylinder head 1, even if the case of oil spills on the fixed part, to not leak to the outside. 这样,即使固定部分的密封很简陋,也能防止向外部漏油。 Thus, even if the seal fixing portion is very simple, it is possible to prevent oil leakage to the outside. 另外,主体51的固定方式,除了用螺纹部分56固定之外,也可以用压配合固定,或者用法兰与固定螺钉的组合等其它结构来固定。 Further, the main body 51 in a fixed manner, except that beyond the fixing screw portion 56 may be secured by press fit, or otherwise secured to the flange structure in combination with a fixing screw or the like.

由于蓄压器45的主体51固定在汽缸盖1上,所以能很方便地更换和维修蓄压器45。 Since the body 45 of the accumulator 51 is fixed to the cylinder head 1, it is possible to easily replace and repair the accumulator 45.

在具有上述结构的向摇臂轴2的油路18供应和排出压力油的机构中,当驱动油泵41从油路42向蓄压油路44供应压力油时,在用第二过滤器46过滤了压力油之后,便向油控制阀43和蓄压器45,以及排气侧的摇臂轴3供油。 In the mechanism of the oil pressure, when the pressure oil supplied from the oil passage 41 to the accumulator oil passage 42 driven oil pump 44, a second filter 46 with a filter 18 having the above structure to supply and discharge oil passage of the rocker shaft 2 after the oil pressure, the oil control valve 43 and Pianxiang accumulator 45, and the exhaust side rocker shaft 3 oil. 在油控制阀43关闭的情况下,则借助于蓄压油路44的油压,在蓄压器45中储存压力油。 In the case of the oil control valve 43 is closed, the hydraulic pressure of the accumulator oil passage 44 by means of the pressure oil stored in the accumulator 45.

当发动机达到规定的转速时,为了转换到驱动高提升凸轮20,就把油控制阀43打开,于是压力油便经过油控制阀43,快速地流入进气侧的摇臂轴2的油路18中。 When the engine reaches a predetermined speed, in order to convert the high-lift cam 20 drive, put the oil control valve 43 is opened, then the pressure oil through the oil control valve 43 will, oil quickly flows into the intake side rocker shaft 18 2 in. 此时,由于压力油的供应量不足,油路42和蓄压油路44中的油压会暂时下降,于是储存在蓄压器45中的压力油便借助于弹簧52的弹力来排油,以补充不足部分的压力油。 At this time, due to insufficient supply of pressure oil passage 42 and the accumulator oil passage 44 in the hydraulic pressure temporarily drops, then the pressure oil stored in the accumulator 45 to the oil discharge it by means of the force of the spring 52, to supplement the shortage of oil pressure.

这样,即使对于一个汽缸上有两个圆筒部分8的转换机构来说,压力油也不会不够,能以很好的应对性供应压力油。 Thus, even if there are two cylinders for the switching mechanism portion 8 for a cylinder, pressure oil will not be enough energy to supply a good deal of pressure oil.

在本发明中,由于在蓄压器45的上游侧设有第二过滤器46,所以能除掉储存在蓄压器45中的压力油所含有的异物。 In the present invention, since the second filter provided on the upstream side 45 of the accumulator 46, it is possible to remove stored in the accumulator 45 pressurized oil contained foreign matter. 这样,就不会有异物进入蓄压器45的主体51内,活塞53上就不会产生刮痕。 Thus, there would be no foreign matter into the accumulator 45, body 51, piston 53 will not generate scratches.

此外,由于从蓄压器45压送出来的压力油不通过第二过滤器46就输送到油控制阀43中,所以不会影响流过第二过滤器46时的压力损失,仍能以良好的应对性向摇臂轴2的油路18供应压力油。 Further, since the pressure-fed from the accumulator 45 out of the second hydraulic oil is not supplied to the filter 46 to the oil control valve 43, so that the pressure loss does not affect the flow through the second filter 46, still a good aptitude response passage 18 of the rocker shaft 2 oil supply pressure.

因此,即使是具有不同提升量的第一进气阀9和第二进气阀11的,结构复杂的连接转换机构的气门装置,储存在蓄压器45中的压力油,经过第二过滤器46的过滤,就不会有异物混入蓄压器45内。 Thus, even if the first intake valve having a different lift amount, valve means connected to the complex conversion means 9 and the second intake valve structure 11, is stored in the accumulator 45 pressurized oil through the second filter the filter 46, there would be no foreign matter within the accumulator 45. 因此,即使是具有蓄压器45的气门装置,也是能防止异物混入的内燃机的气门装置。 Thus, even if the valve means having a pressure accumulator 45, and it is possible to prevent foreign matter mixed in the valve apparatus of an internal combustion engine.

虽然以上只举例说明了适于使用以上所述结构的蓄压器45的内燃机,以及适于使用设有第二过滤器46的回路结构的内燃机,是由具有第一摇臂5、第三摇臂6和第二摇臂7所构成的转换机构的内燃机,但,它们也能适用于具有其它结构的转换机构的内燃机。 Although the above only illustrates an internal combustion engine adapted to use the above-described structure of the accumulator 45, and the structure is provided with an internal combustion engine adapted to use the second loop filter 46, by having the first rocker arm 5, the third roll engine rocker arms 6 and 7 constitute a second conversion mechanism, but they can be applied to an internal combustion engine having a conversion mechanism other structures. 例如,在本申请的申请人所申请的特开2001-41017号专利申请中的,具有转换两种提升量不同的摇臂的结构的一个进气阀的内燃机中,也能使用蓄压器45,以及设有第二过滤器46的回路结构。 For example, in Laid-Open Patent Application No. 2001-41017 filed by the applicant of the present application, having a conversion engine intake valve lift amount of two different structures of the rocker arm, can also be used accumulator 45 and a second circuit configuration provided with the filter 46.

另外,在上述实施例中,举例说明了把凸轮的转换机构设置在进气侧的摇臂轴2上的例子,但,它也能适用于把转换凸轮的机构设置在排气侧的情况。 Further, in the above embodiment, an example to illustrate the conversion cam mechanism is provided on the intake side rocker shaft 2, but it is also applicable to the conversion cam mechanism is provided on the exhaust side of the case.

本发明第一方面的内燃机的气门装置,其特征在于具有下列各部分:摇臂轴;第一摇臂,其前端与第一进气阀或者第一排气阀联结,支承在上述摇臂轴上能自由摇动,并由第一低提升凸轮驱动;第三摇臂,其前端与上述第二进气阀或者上述第二排气阀联结,支承在上述摇臂轴上能自由摇动,并由提升量比上述第一低提升凸轮小的第二低提升凸轮驱动;第二摇臂,它具有能与上述第一和第三摇臂侧连接的前端,支承在上述摇臂轴上能自由摇动,由提升量比上述第一低提升凸轮大的高提升凸轮驱动;可变阀门控制机构,它利用从油压源通过第一过滤器的压力油通过油路后的供应和排出,控制上述第一和第二进气阀或者上述第一和第二排气阀的开关状况,以转换上述第二摇臂与上述第一摇臂和第三摇臂的连接状态和分离状态;设置在上述油路的上述可变 The first aspect of the present invention is an internal combustion engine valve, characterized by having the following components: rocker shaft; a first rocker arm, the front end of the first intake valve or an exhaust valve coupled to the first, supported on said rocker shaft the swinging freely, driven by a first low lift cam; third arm, the front end of the second intake valve or the exhaust valve of the second coupling, the support can be freely swung in the above-described rocker arm shaft, by lifting the first low lift smaller than the second low lift cam of the cam drive; a second rocker arm having a distal end, the support can be connected to the first side and the third arm can be freely swung in the above-described rocker arm shaft , the lift quantity of the first low-lift cam large high lift cam driver; a variable valve control mechanism, which uses the pressure oil from the hydraulic source through a first filter by the supply and discharge passage, the first control a switch condition or the second intake valve and said first and second exhaust valve, in order to convert the second arm to the first rocker arm and a third arm connected state and separated state; provided in the oil the variable road 门控制机构的上游侧,储存向上述可变阀门控制机构供应的压力油的蓄压器;以及在上述油路的上述蓄压器的上游侧,并且设置在上述第一过滤器的下游侧的第二过滤器。 An upstream side of the door control mechanism, the accumulator reservoir to said control means supplies the oil pressure of the variable valve; and upstream of the accumulator oil passage and disposed downstream of the first side of the filter the second filter.

即使是具有不同提升量的进气阀(排气阀)和第二进气阀(第二排气阀)的,结构复杂的连接转换机构的气门装置,由于储存在蓄压器中的压力油,经过第二过滤器的过滤,就不会有异物混入蓄压器内。 Even the intake valve (exhaust valve) and a second intake valve (second exhaust valve) having a different lift amount, a valve means connected to a complicated structure of the conversion means, stored in the pressure accumulator oil , filtered through a second filter, foreign matter will not have the pressure accumulator.

在本发明第二方面的内燃机的气门装置是在第一方面所记载的内燃机的气门装置中,还具有这样的特征,即,上述蓄压器的主体固定在汽缸盖上。 A valve in an internal combustion engine of the second aspect of the present invention is an internal combustion engine valve described in the first aspect, it is also has such a feature, i.e., main body of the accumulator is fixed to the cylinder cover.

这样,就能很方便地进行蓄压器的更换、维修等。 In this way, it can very easily accumulator change and maintenance.

在本发明第三方面的内燃机的气门装置是在第二方面所记载的内燃机的气门装置中,还具有这样的特征,即,上述油压源是布置在汽缸体下部的单独一台油泵。 A valve in an internal combustion engine of the third aspect of the present invention is an internal combustion engine in a valve described in the second aspect further has a feature, i.e., a separate source of the hydraulic pump disposed in a lower portion of the cylinder body.

这样,就能减少传递给蓄压器的由油泵所产生的压力油的脉动。 In this way, we can reduce the pulsation transmitted to the pressure accumulator a pressure oil generated by the oil pump.

在本发明第四方面的内燃机的气门装置是在第三方面所记载的内燃机的气门装置中,还具有这样的特征,即,上述第二过滤器布置在这样的位置上,即,从上述第二过滤器到上述蓄压器的上述油路的长度,要比从上述油泵到上述第二过滤器的油路的长度短。 Valve operating apparatus according to the fourth aspect of the present invention is a valve in an internal combustion engine described in the third aspect further has a feature that the second filter is disposed in such a position, i.e., from the first the length of the passage of the two filters to said accumulator, than the length from said oil pump to said oil passage of the second filter is short.

这样,就能更加有效地防止在油路内产生的异物混入蓄压器内。 Thus, foreign matter can be prevented more effectively generated in the oil mixed in the pressure accumulator.

Claims (4)

  1. 1.一种内燃机的气门装置,其特征在于,它具有下列各部分:摇臂轴;第一摇臂,其前端与第一进气阀或者第一排气阀联结,支承在上述摇臂轴上能自由摇动,并由第一低提升凸轮驱动;第三摇臂,其前端与第二进气阀或者第二排气阀联结,支承在上述摇臂轴上能自由摇动,并由提升量比上述第一低提升凸轮小的第二低提升凸轮驱动;第二摇臂,它具有能与上述第一和第三摇臂连接的前端,支承在上述摇臂轴上能自由摇动,并由提升量比上述第一低提升凸轮大的高提升凸轮驱动;可变阀门控制机构,它利用从油压源通过油泵及该油泵下游侧的第一过滤器的压力油通过油路进行的供应和排出,控制上述第一和第二进气阀或者上述第一和第二排气阀的开关状况,以转换上述第二摇臂相对于上述第一摇臂和第三摇臂的连接状态和分离状态;设置在上述油 1. A valve of an internal combustion engine, characterized in that it has the following sections: rocker shaft; a first rocker arm, the front end of the first intake valve or an exhaust valve coupled to the first, supported on said rocker shaft the swinging freely, driven by a first low lift cam; third arm, the front end of the second intake valve or the exhaust valve of the second coupling, the support can be freely swung in the above-described rocker arm shaft, by an amount of lift lower than the first low lift cam lift smaller second drive cam; a second rocker arm having a distal end connectable with said first and third rocker arms, the support can be freely swung in the above-described rocker arm shaft, by lift quantity of the first low-lift cam large high lift cam drive; variable valve control mechanism, which uses the pressure oil from the hydraulic pressure source through a first filter and a pump that pumps the downstream side through the supply passage and discharge controlling said first and second intake valve or the switching status of said first and second exhaust valve, in order to convert the second arm with respect to the connection state of said first rocker arm and the third arm and separation state; provided in the oil 的上述可变阀门控制机构的上游侧,储存向上述可变阀门控制机构供应的压力油的蓄压器;以及在上述油路的上述蓄压器的上游侧,并且设置在上述第一过滤器的下游侧的第二过滤器。 Controlling the variable valve mechanism upstream side of the stored accumulator pressure oil supplied to the variable valve control mechanism; and upstream of the accumulator oil passage, and a first filter provided in the the second filter downstream.
  2. 2.如权利要求1所述的内燃机的气门装置,其特征在于,上述蓄压器的主体固定在汽缸盖上。 2. The valve apparatus of an internal combustion engine according to claim 1, characterized in that the main body of the accumulator is fixed to the cylinder cover.
  3. 3.如权利要求2所述的内燃机的气门装置,其特征在于,上述油压源是布置在汽缸体下部的单独一台油泵。 2, the valve apparatus of an internal combustion engine as claimed in claim 3, wherein said hydraulic source is a single pump disposed in the cylinder body lower portion.
  4. 4.如权利要求3所述的内燃机的气门装置,其特征在于,上述第二过滤器布置在这样的位置上,即,从上述第二过滤器到上述蓄压器的油路的长度,要比从上述油泵到上述第二过滤器的上述油路的长度短。 4. The valve apparatus of an internal combustion engine according to claim 3, wherein said second filter is disposed in such a position, i.e., from the second filter to said accumulator oil passage length, to shorter than a length from said second pump to said oil passage of the filter.
CN 200310121462 2002-12-17 2003-12-17 Air-valve device of IC engine CN1282821C (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101779010B (en) 2007-08-23 2012-07-18 本田技研工业株式会社 Valve gear control device for internal combustion engine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054115A1 (en) 2005-11-12 2007-05-24 Schaeffler Kg A process for the variable valve control of an internal combustion engine
JP4516552B2 (en) 2006-08-08 2010-08-04 財団法人工業技術研究院Industrial Technology Research Institute Valve control mechanism
CN101550848B (en) 2006-08-15 2012-02-29 财团法人工业技术研究院 Valve control mechanism
CN100547230C (en) 2006-08-15 2009-10-07 财团法人工业技术研究院 Valve controlling mechanism
DE102012210795B3 (en) * 2012-06-26 2013-09-19 Schaeffler Technologies AG & Co. KG Pressure accumulator for e.g. balancing operational pressure fluctuation in line system of internal combustion engine, has locking device that is provided with locking pipe which is connected with piston

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101779010B (en) 2007-08-23 2012-07-18 本田技研工业株式会社 Valve gear control device for internal combustion engine

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