WO2015035857A1 - 发动机气门升程连续可调的调节方法及装置 - Google Patents

发动机气门升程连续可调的调节方法及装置 Download PDF

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Publication number
WO2015035857A1
WO2015035857A1 PCT/CN2014/084974 CN2014084974W WO2015035857A1 WO 2015035857 A1 WO2015035857 A1 WO 2015035857A1 CN 2014084974 W CN2014084974 W CN 2014084974W WO 2015035857 A1 WO2015035857 A1 WO 2015035857A1
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Prior art keywords
valve lift
valve
piston
adjuster
cylinder
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PCT/CN2014/084974
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English (en)
French (fr)
Inventor
田丰果
谢庆生
王自勤
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Tian Fengguo
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Publication of WO2015035857A1 publication Critical patent/WO2015035857A1/zh

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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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
    • F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve

Definitions

  • the present invention relates to an engine, and more particularly to an adjustment method for continuously adjusting an engine valve lift, and to a device for the adjustment method.
  • BACKGROUND OF THE INVENTION Engines have different requirements on the amount of intake air under different loads, and adjusting the valve lift according to the load of the engine is an important technical means for satisfying the requirements of the engine intake amount, improving the power characteristics, improving fuel economy, and reducing harmful gas emissions.
  • one type of method is to increase the amplifying mechanism of the follower of the cam mechanism to realize the adjustment of the valve lift. This method has the disadvantages of complicated mechanism and high dynamic characteristics.
  • Another method is to use a hydraulically actuated valve and use a solenoid valve or other hydraulic valve to control the hydraulic circuit that drives the valve to adjust the valve lift.
  • solenoid valves or other hydraulic valves that need to be configured.
  • the structure and control are complex, and the high-frequency response performance of the solenoid valve is not good.
  • Due to the above-mentioned variable valve lift technology there are many defects, and the application of the variable valve lift technology is limited.
  • most engines are not equipped with a variable valve lift device, and a throttle valve is used to control the intake air amount of the cylinder.
  • the use of the throttle valve is not conducive to the flow of the intake airflow, increasing the pumping loss of the engine, and the engine fuel economy and harmful gas emission indicators are poor.
  • the object of the present invention and solving the main technical problems thereof are achieved by the following technical solutions:
  • the method for continuously adjusting the valve lift of the engine of the present invention comprises:
  • a valve lift adjuster is connected in parallel with the hydraulic oil passage between the cam cylinder and the valve cylinder of the variable valve train of the hydraulic variable cam follower;
  • the valve lift adjuster includes a valve lift adjuster cylinder, a valve lift adjuster piston, a piston returning device and a limit device, and the return force generated by the piston returning device keeps the piston in the direction of zero
  • the limit device controls the stroke between the valve lift regulator piston from the zero position to the limit device, controls the volume of oil flowing into the valve lift regulator, and then controls the amount of oil flowing into the valve cylinder to achieve control
  • the valve lift continuously variable control wherein: the hydraulic system overcomes the piston return force when the valve lift regulator piston is at the zero position, and the hydraulic pressure corresponding to the movement of the valve lift regulator piston is greater than the system overcomes the valve spring preload force And the oil pressure corresponding to the opening of the valve, when the valve lift adjuster piston reaches the maximum adjustable stroke, the oil pressure corresponding to the valve lift force of the valve lift adjuster is smaller than the valve spring force when the valve reaches the required minimum lift Oil pressure.
  • the piston returning device is a hydraulic device, a pneumatic device, an electromagnetic device or/and a spring.
  • the limit device is a limit rod, a limit block or a limit sleeve.
  • the engine valve lift continuously adjustable adjusting device of the invention comprises a cam and a valve, and a hydraulic system is arranged between the cam and the valve, wherein: a valve lift adjustment is connected in parallel between the hydraulic oil circuit between the cam cylinder and the valve cylinder
  • the valve lift adjuster includes a valve lift regulator cylinder, a valve lift regulator piston, a valve lift adjuster spring, a valve lift adjuster limit rod, and a valve lift adjuster piston is located at the valve lift adjuster.
  • valve lift adjuster spring Inside the cylinder, the valve rear end of the valve lift adjuster is provided with a valve lift adjuster spring and a limit rod, wherein: the hydraulic system overcomes the valve lift adjuster spring preload force and pushes the valve lift adjuster piston movement correspondingly
  • the oil pressure is greater than the oil pressure corresponding to the system to overcome the valve spring preload and open the valve.
  • the force corresponding to the valve lift adjuster spring is less than the valve reach.
  • the above-mentioned engine valve lift continuously adjustable adjusting device wherein: the spring can be equivalently replaced by introducing a pressure oil in the rear chamber of the valve lift regulator piston or introducing a combination of the pressure oil and the spring.
  • the present invention has significant advantages and advantageous effects over the prior art.
  • FIG. 1 is a schematic structural view of a device of the present invention. In the picture:
  • Embodiment 1 A method for continuously adjusting an engine valve lift continuously includes: (1) a valve lift adjuster is connected in parallel with the hydraulic oil passage between the cam cylinder and the valve cylinder of the variable valve train of the hydraulic variable cam follower;
  • the valve lift adjuster includes a valve lift adjuster cylinder, a valve lift adjuster piston, a piston returning device and a limit device, and the return force generated by the piston returning device keeps the piston in the direction of zero
  • the limit device controls the stroke between the valve lift regulator piston from the zero position to the limit device, controls the volume of oil flowing into the valve lift regulator, and then controls the amount of oil flowing into the valve cylinder to achieve control
  • the valve lift continuously variable control wherein: the hydraulic system overcomes the piston return force when the valve lift adjuster piston is at the zero position, and the hydraulic pressure corresponding to the movement of the valve lift adjuster piston is greater than the system check valve spring preload The hydraulic pressure corresponding to the opening of the valve is tightened, and the valve lift force of the valve lift adjuster piston reaches the maximum adjustable stroke.
  • the oil pressure corresponding to the piston return force of the valve lift adjuster is smaller than the valve spring force when the valve reaches the required minimum lift.
  • the piston returning device is a hydraulic device, a pneumatic device, an electromagnetic device or/and a spring.
  • the limit device is a limit 4 dry, limit block or limit set.
  • Embodiment 2 The engine valve lift continuously adjustable adjusting device includes a cam 1, a valve 2, and a hydraulic system 3 is provided between the cam 1 and the valve 2, wherein: a hydraulic oil circuit between the cam cylinder 4 and the valve cylinder 5 6 in parallel with a valve lift adjuster 7, the valve lift adjuster 7 includes a valve lift adjuster cylinder 8, a valve lift adjuster piston 9, a valve lift adjuster spring 10, a valve lift adjuster limit rod 11.
  • the working process is as follows:
  • the valve lift adjuster piston 9 is at zero when the rear end of the cam cylinder piston 13 is in contact with the cam 1 at the cam base circle, under the action of the spring force (return force) of the valve lift adjuster spring 10 Position (the position of the valve lift regulator cylinder 8 is zero).
  • Position the position of the valve lift adjuster limit lever 11
  • the stroke between the valve lift adjuster piston 9 from the zero position to the limit device can be controlled, thereby controlling the amount of oil flowing into the valve lift adjuster 7, thereby controlling the hydraulic pressure.
  • the amount of oil flowing into the valve cylinder 5 eventually reaches the purpose of regulating and controlling the valve lift.
  • valve lift adjuster limit lever 11 When the engine is at the maximum load operation, the valve lift adjuster limit lever 11 is adjusted to zero with the clearance of the rear end of the valve lift adjuster piston 9 and the valve lift adjuster piston is pushed to the zero position, and the valve lift can be flown in.
  • the amount of oil in the regulator 7 is zero.
  • valve 2 When the cam 1 is in the return stroke, the valve 2 is retracted by the valve spring 12, the oil returns to the cam oil rainbow 4, and the oil pressure is lowered. When the oil pressure is reduced, the force acting on the valve cylinder piston 14 is less than the valve bullet 12 When the spring is preloaded, the valve 2 is closed. As described above, in this process, all of the oil flowing out of the cam oil rainbow 4 flows into the valve oil rainbow 5, and the lift of the valve 2 reaches the maximum. When the engine is at the minimum load operation, the valve lift adjuster limit lever 11 is adjusted to the clearance of the rear end of the valve lift adjuster piston 9 to the maximum value of the adjustment range thereof, and the oil of the valve lift adjuster can be flown. The amount is the largest.
  • valve lift regulator piston 9 When the oil pressure rises until the force of the system acting on the valve lift regulator piston 9 is greater than the preload force of the valve lift regulator spring 10, the hydraulic oil The inflow valve lift regulator cylinder 8 pushes the valve lift regulator piston 9 to move and the inflow volume continues to increase until the valve lift adjuster piston 9 rear end and the valve lift adjuster The limit lever 11 is in contact. At the same time as the valve lift adjuster piston 9 moves, the valve lift is also continuously increased. After the valve lift adjuster piston 9 is stopped, the system oil pressure is further increased, and the valve lift continues to increase until the cam lift ends.
  • Valve 2 When the oil pressure drops to the force acting on the valve oil rainbow piston 14 is less than the preload force of the valve spring 12 , Valve 2 is closed. As described above, in this process, the oil flowing out of the cam cylinder 4 flows into the valve lift adjuster 7 with the largest volume, and the volume of the inflow valve cylinder 5 is the smallest, and the valve lift is minimized. When the engine is running between the maximum and minimum loads, the valve lift adjuster limit lever 11 is adjusted to a reasonable value according to the operating conditions of the engine, and the system can obtain a reasonable valve lift.
  • the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any modification to the above embodiments can be made according to the technical essence of the present invention without departing from the technical scope of the present invention. And equivalent changes and modifications are still within the scope of the technical solution of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

一种发动机气门升程连续可调的调节方法，在液压式可变凸轮从动件的可变配气机构的凸轮油缸与气门油缸之间的液压油路中并联一个气门升程调节器；气门升程调节器（7）包括气门升程调节器油缸（8）、气门升程调节器活塞（9）、活塞回位装置（10）和限位装置（11），通过活塞回位装置（10）产生的回位力使活塞始终保持向零位方向运动的趋势，通过限位装置（11）控制气门升程调节器活塞从零位到限位装置之间的行程，控制流入气门升程调节器的油液容积，进而控制流入气门油缸的油量，实现控制气门升程连续可变控制；还提供了一种发动机气门升程连续可调的调节装置。本方法和装置提高发动机各种工况下燃油经济性，改善发动机的动力性和减排性。

Description

发动机气门升程连续可调的调节方法及装置
技术领域 本发明涉及发动机，特别是涉及一种发动机气门升程连续可调的调节方 法， 同时还涉及该调节方法所用的装置。 背景技术 发动机在不同的负荷下对进气量有不同的要求，根据发动机的负荷调节 气门升程是满足发动机进气量要求、 改善动力特性、 提高燃油经济性和减少 有害气体排放的重要技术手段之一。 目前， 在可变气门升程技术中， 一类方 法是对凸轮机构的从动件增加放大机构来实现气门升程的调节， 这种方法存 在机构较复杂、 高速动态特性欠佳等缺点。 另一类方法是采用液压驱动气门， 并利用电磁阀或其他液压阀控制驱动气门的液压油路来实现对气门升程的调 节， 这类方法存在需配置较多的电磁阀或其他液压阀， 结构及控制复杂、 电 磁阀高频响应性能欠佳等缺点。 由于上述可变气门升程技术存在诸多缺陷， 使可变气门升程技术的应用受到限制， 目前大多数发动机都没有配置可变气 门升程装置， 而采用节气门来控制汽缸的进气量。 节气门的使用不利于进气 道气流的流动， 增加了发动机的泵气损失， 发动机的燃油经济性和有害气体 排放指标均较差。 发明内容 本发明的目的在于提供一种提高发动机各种工况下燃油经济性，改善发 动机的动力性和减排性的发动机气门升程连续可调的调节方法。 本发明的另一目的在于提供该发动机气门升程连续可调的调节装置。 本发明的目的及解决其主要技术问题是采用以下技术方案来实现的: 本发明的发动机气门升程连续可调的调节方法， 包括:
( 1 ) 在液压式可变凸轮从动件的可变配气机构的凸轮油缸与气门油缸 之间的液压油路中并联一个气门升程调节器；
( 2 )气门升程调节器包括气门升程调节器油缸、 气门升程调节器活塞、 活塞回位装置和限位装置， 通过活塞回位装置产生的回位力使活塞始终保持 向零位方向运动的趋势， 通过限位装置控制气门升程调节器活塞从零位到限 位装置之间的行程， 控制流入气门升程调节器的油液容积， 进而控制流入气 门油缸的油量， 实现控制气门升程连续可变控制； 其中： 液压系统克服气门 升程调节器活塞处于零位时的活塞回位力而推动气门升程调节器活塞运动所 对应的油压大于系统克服气门弹簧预紧力而打开气门所对应的油压， 气门升 程调节器活塞达到最大可调行程时气门升程调节器活塞回位力所对应的油压 小于气门达到所需最小升程时气门弹簧作用力所对应的油压。 上述的发动机气门升程连续可调的调节方法， 其中： 活塞回位装置为液 压装置、 气压装置、 电磁装置或 /和弹簧等。 上述的发动机气门升程连续可调的调节方法，其中：限位装置为限位杆、 限位块或限位套等。 本发明的发动机气门升程连续可调的调节装置， 包括凸轮、 气门， 凸轮 与气门之间设有液压系统， 其中： 在凸轮油缸与气门油缸之间的液压油路中 并联一个气门升程调节器， 气门升程调节器包括气门升程调节器油缸、 气门 升程调节器活塞、 气门升程调节器弹簧、 气门升程调节器限位杆， 气门升程 调节器活塞位于气门升程调节器油缸内， 气门升程调节器的活塞后端设有气 门升程调节器弹簧和限位杆， 其中： 液压系统克服气门升程调节器弹簧预紧 力而推动气门升程调节器活塞运动所对应的油压大于系统克服气门弹簧预紧 力而打开气门所对应的油压， 气门升程调节器活塞达到最大可调行程时气门 升程调节器弹簧的作用力所对应的油压小于气门达到所需最小升程时气门弹 簧的作用力所对应的油压。 上述的发动机气门升程连续可调的调节装置， 其中： 弹簧可由在气门升 程调节器活塞后腔引入压力油或引入压力油和弹簧的组合等方式等效替代。 本发明与现有技术相比具有明显的优点和有益效果。由以上技术方案可 知， 本发明采用液压容积调节式调节方法， 使发动机在各种工况下都能获得 合适的气门升程， 取消节气门， 改善进气流动条件， 减少泵气功率损失， 提 高燃油的燃烧效率， 改善发动机性能， 降低有害气体排放； 采用容积控制， 控制精确、 调节筒单； 气门升程调节范围宽， 可在发动机全工况下连续调整， 极大提高和改善了发动机各工况下的动力性、 经济性和排放性； 对于发动机 一定的负荷条件下， 气门升程调节器只需进行相应的限位杆的位置调节， 系 统即可自动进行自适应运转， 无需针对发动机每一个循环都进行高频、 反复 的调节动作， 具有良好的系统自适应性和动态响应特性； 发动机所有进气门 的气门升程调节器， 可共用一套安装装置、 一套限位驱动控制装置， 结构筒 单， 集成性好， 经济性好。 附图说明 图 1为本发明装置的结构示意图。 图中标己：
1、 凸轮； 2、 气门； 3、 液压系统； 4、 凸轮油虹； 5、 气门油虹； 6、 液 压油路； 7、 气门升程调节器； 8、 气门升程调节器油缸； 9、 气门升程调节 器活塞； 10、 气门升程调节器弹簧； 11、 气门升程调节器限位杆； 12、 气门 弹簧； 13、 凸轮油虹活塞； 14、 气门油缸活塞。 具体实施方式 以下结合附图及较佳实施例， 对依据本发明的具体实施方式、 结构、 特 征及其功效， 详细说明 ¾口后。 实施例 1 一种发动机气门升程连续可调的调节方法， 包括: ( 1 ) 在液压式可变凸轮从动件的可变配气机构的凸轮油缸与气门油缸 之间的液压油路中并联一个气门升程调节器；
( 2 )气门升程调节器包括气门升程调节器油缸、 气门升程调节器活塞、 活塞回位装置和限位装置， 通过活塞回位装置产生的回位力使活塞始终保持 向零位方向运动的趋势， 通过限位装置控制气门升程调节器活塞从零位到限 位装置之间的行程， 控制流入气门升程调节器的油液容积， 进而控制流入气 门油缸的油量， 实现控制气门升程连续可变控制； 其中： 液压系统克服气门 升程调节器活塞处于零位时的活塞回位力而推动气门升程调节器活塞运动所 对应的油压大于系统克月艮气门弹簧预紧力而打开气门所对应的油压， 气门升 程调节器活塞达到最大可调行程时气门升程调节器活塞回位力所对应的油压 小于气门达到所需最小升程时气门弹簧作用力所对应的油压。 活塞回位装置为液压装置、 气压装置、 电磁装置或 /和弹簧等。 限位装置为限位 4干、 限位块或限位套等。 实施例 2 发动机气门升程连续可调的调节装置， 包括凸轮 1、 气门 2, 凸轮 1与 气门 2之间设有液压系统 3 , 其中： 在凸轮油缸 4与气门油缸 5之间的液压 油路 6中并联一个气门升程调节器 7 , 气门升程调节器 7包括气门升程调节 器油缸 8、 气门升程调节器活塞 9、 气门升程调节器弹簧 10、 气门升程调节 器限位杆 11 , 气门升程调节器活塞 9位于气门升程调节器油缸 8内， 气门升 程调节器活塞 9后端设有气门升程调节器弹簧 10和气门升程调节器限位杆 11。 液压系统克服气门升程调节器弹簧 10预紧力和气门升程调节器活塞 9 达到最大可调行程时的气门升程调节器弹簧 10 的作用力而推动气门升程调 节器活塞 9运动所对应的油压均小于液压系统克服气门弹簧 12预紧力而打 开气门 2所对应的油压。 气门升程调节器弹簧 10可由在气门升程调节器活塞 9后腔引入压力油 或 I入压力油和弹簧的组合等方式等效替代。 工作过程如下: 气门升程调节器活塞 9在凸轮油缸活塞 13后端与凸轮 1相接触处为凸 轮基圓时， 在气门升程调节器弹簧 10 弹簧力 （回位力） 的作用下处于零位 (气门升程调节器油缸 8容积为零的位置）。 调节气门升程调节器限位杆 11 的位置就可以控制气门升程调节器活塞 9从零位到限位装置之间的行程， 从 而控制流入气门升程调节器 7的油量， 进而控制液压油流入气门油缸 5中的 油量， 最终达到调节、 控制气门升程的目的。 当发动机处于最高负荷运转时， 将气门升程调节器限位杆 11调节至与 气门升程调节器活塞 9后端的间隙为零且推动气门升程调节器活塞至零位， 则可以流入气门升程调节器 7的油量为零。 凸轮 1处于升程时， 在凸轮油虹 活塞 13 的作用下液压系统油压升高， 当油压升高至系统作用于气门油虹活 塞 14的力大于气门弹簧 12预紧力时， 液压油流入气门油缸 5并推动气门油 缸活塞 14运动同时气门打开并且开度不断加大直至凸轮升程结束。 当凸轮 1 处于回程时， 气门 2在气门弹簧 12的作用下回落， 油液向凸轮油虹 4回流， 同时油压降低， 当油压降低至系统作用于气门油缸活塞 14 的力小于气门弹 12簧预紧力时， 气门 2关闭。 如上所述， 该过程中， 凸轮油虹 4中流出的油 全部流入气门油虹 5 , 气门 2升程达到最大。 当发动机处于最低负荷运转时， 将气门升程调节器限位杆 11调节至与 气门升程调节器活塞 9后端的间隙为其调节范围的最大值， 则可以流入气门 升程调节器 Ί的油量为最大。 凸轮 1处于升程时， 在凸轮油缸活塞 13的作 用下液压系统油压升高， 当油压升高至系统作用于气门油虹活塞 14 的力大 于气门弹簧 12预紧力时， 液压油首先流入气门油缸 5推动气门油缸活塞 14 运动同时气门 2打开。 随着气门 2升程的加大， 系统油压进一步升高， 当油 压升高至系统作用于气门升程调节器活塞 9的力大于气门升程调节器弹簧 10 预紧力时， 液压油流入气门升程调节器油缸 8推动气门升程调节器活塞 9运 动并且流入容积不断加大直至气门升程调节器活塞 9后端与气门升程调节器 限位杆 11接触。在气门升程调节器活塞 9运动的同时气门升程也在不断加大， 气门升程调节器活塞 9停止后， 系统油压进一步升高， 气门升程继续加大直 至凸轮升程结束。 当凸轮 1处于回程时， 气门 2在气门弹簧 12的作用下回 落， 油液向凸轮油虹 4回流， 同时油压降氐， 当油压降氐至系统作用于气门 升程调节器活塞 9的力小于气门升程调节器活塞 9后端的弹簧力时， 气门升 程调节器活塞 9在弹簧力作用下也开始返回， 气门升程调节器内的油液也开 始向凸轮油缸 4回流直至气门升程调节器活塞 9回到零位 （气门升程调节器 油虹容积为零的位置）。 在气门升程调节器活塞 9 回位的过程中气门 2也在 不断回落， 系统油压不断降氐， 当油压降氐至作用于气门油虹活塞 14 的力 小于气门弹簧 12预紧力时， 气门 2关闭。 如上所述， 该过程中， 凸轮油缸 4 中流出的油流入气门升程调节器 7的容积最大， 而流入气门油缸 5的容积最 小， 气门升程达到最小。 当发动机处于最大与最小负荷之间运转时，根据发动机的工作情况将气 门升程调节器限位杆 11调节至合理值， 系统即可获得合理的气门升程。 以上所述， 仅是本发明的较佳实施例而已， 并非对本发明作任何形式上 的限制， 任何未脱离本发明技术方案内容， 依据本发明的技术实质对以上实 施例所作的任何筒单修改、 等同变化与修饰， 均仍属于本发明技术方案的范 围内。

Claims

权 利 要 求 书
1.一种发动机气门升程连续可调的调节方法， 包括：
( 1 ) 在液压式可变凸轮从动件的可变配气机构的凸轮油缸与气门油缸 之间的液压油路中并联一个气门升程调节器；
( 2 )气门升程调节器包括气门升程调节器油缸、 气门升程调节器活塞、 活塞回位装置和限位装置， 通过活塞回位装置产生的回位力使活塞始终保持 向零位方向运动的趋势， 通过限位装置控制气门升程调节器活塞从零位到限 位装置之间的行程， 控制流入气门升程调节器的油液容积， 进而控制流入气 门油缸的油量， 实现控制气门升程连续可变控制； 其中： 液压系统克服气门 升程调节器活塞处于零位时的活塞回位力而推动气门升程调节器活塞运动所 对应的油压大于系统克月艮气门弹簧预紧力而打开气门所对应的油压， 气门升 程调节器活塞达到最大可调行程时气门升程调节器活塞回位力所对应的油压 小于气门达到所需最小升程时气门弹簧作用力所对应的油压。
2. 如权利要求 1 所述的发动机气门升程连续可调的调节方法， 其中： 活塞回位装置为液压装置、 气压装置、 电磁装置或 /和弹簧。
3. 如权利要求 1或 2所述的发动机气门升程连续可调的调节方法， 其 中： 限位装置为限位 4干、 限位块或限位套。
4.一种发动机气门升程连续可调的调节装置， 包括凸轮（1 )、气门（2 ), 凸轮（ 1 )与气门 （ 2 )之间设有液压系统（ 3 ), 其特征在于： 在凸轮油缸（ 4 ) 与气门油缸 （ 5 ) 之间的液压油路 （ 6 ) 中并联一个气门升程调节器 （ 7 ), 气 门升程调节器（ Ί )包括气门升程调节器油缸（ 8 )、 气门升程调节器活塞（ 9 )、 气门升程调节器弹簧 （ 10 )、 气门升程调节器限位杆 （ 11 ), 气门升程调节器 活塞 （9 ) 位于气门升程调节器油缸 （8 ) 内， 气门升程调节器活塞 （9 ) 后 端设有气门升程调节器弹簧（ 10 )和气门升程调节器限位杆（11 ); 液压系统 克服气门升程调节器弹簧 （ 10 ) 预紧力和气门升程调节器活塞 （9 ) 达到最 大可调行程时的气门升程调节器弹簧 （10) 的作用力而推动气门升程调节器 活塞 （9 )运动所对应的油压均小于液压系统克服气门弹簧 （ 12 ) 预紧力而 打开气门 （2) 所对应的油压。
5. 如权利要求 4所述的发动机气门升程连续可调的调节装置， 其特征 在于： 气门升程调节器弹簧 （ 10) 可由在气门升程调节器活塞 （9 ) 后腔引 入压力油或引入压力油和弹簧的组合方式等效替代。
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