WO2017181398A1 - Ensemble de bielle de vilebrequin sans vibration de moteur à combustion interne - Google Patents

Ensemble de bielle de vilebrequin sans vibration de moteur à combustion interne Download PDF

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Publication number
WO2017181398A1
WO2017181398A1 PCT/CN2016/079977 CN2016079977W WO2017181398A1 WO 2017181398 A1 WO2017181398 A1 WO 2017181398A1 CN 2016079977 W CN2016079977 W CN 2016079977W WO 2017181398 A1 WO2017181398 A1 WO 2017181398A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting rod
rod assembly
internal combustion
vibration
combustion engine
Prior art date
Application number
PCT/CN2016/079977
Other languages
English (en)
Chinese (zh)
Inventor
张玉金
张镤
伍伟健
韦家其
Original Assignee
江门市蓬江区蓝金科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 江门市蓬江区蓝金科技有限公司 filed Critical 江门市蓬江区蓝金科技有限公司
Priority to CN201680000420.7A priority Critical patent/CN107454929A/zh
Priority to PCT/CN2016/079977 priority patent/WO2017181398A1/fr
Publication of WO2017181398A1 publication Critical patent/WO2017181398A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/16—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for interconverting rotary motion and reciprocating motion
    • F16H21/18—Crank gearings; Eccentric gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F16C3/10—Crankshafts assembled of several parts, e.g. by welding by crimping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/22—Cranks; Eccentrics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/22—Compensation of inertia forces
    • F16F15/24—Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining imbalance
    • G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
    • G01M1/24—Performing balancing on elastic shafts, e.g. for crankshafts

Definitions

  • the invention relates to the field of internal combustion engines, and in particular to a vibration-free crankshaft connecting rod assembly for an internal combustion engine which eliminates vibration when the internal combustion engine is working.
  • the dynamic balance is the main technical requirement, that is to say, the finished crankshaft connecting rod assembly, regardless of the shape, the weight of the connecting portion of the connecting rod pin and the opposite weighting body The weight is equal.
  • the dynamic balance test of the crankshaft is not beating. However, when the crankshaft is installed on the engine, the vibration will be generated. The vibration generated by the engine is caused by the moment when the internal combustion engine is on fire. The piston generates the crankshaft connecting rod pin through the connecting rod. The driving force is rotated to rotate the crankshaft.
  • a balance shaft mechanism is usually installed in the crankcase.
  • the engine balance shaft mechanism is disposed in the lower part of the engine, and the balance case is included in the oil sump.
  • Body, balance shaft, counterweight, drive chain, gear and other parts, the working principle is usually the crankshaft to drive the chain, in order to drive the balance shaft system, sometimes a balance shaft can not meet the requirements, need to add two or even three
  • the balance shaft can achieve the desired results. This arrangement not only increases the cost, but also complicates the internal structure of the entire engine, increasing the difficulty of maintenance.
  • the technical problem to be solved by the present invention is to provide a vibration-free crankshaft connecting rod assembly for an internal combustion engine, which can eliminate engine vibration without setting a balance shaft, thereby reducing production cost and facilitating maintenance.
  • the technical solution of the present invention is a vibration-free crankshaft connecting rod assembly for an internal combustion engine, including a left crank, a right crank, a link pin, a bearing, and a connecting rod.
  • the left crank and the right crank are symmetrically arranged, the surface of the left crank is divided into a left mounting portion and a left weight portion by a horizontal center line, and the right crank is divided into a right mounting portion and a right weight portion by a horizontal center line, and the left crank is installed
  • the opposite positions of the portion and the right mounting portion are respectively provided with mounting holes, the two ends of the connecting rod pin are respectively installed in the mounting holes, and the bearing sleeve is sleeved on the connecting rod pin between the left mounting portion and the right mounting portion, and the end sleeve of the connecting rod is sleeved
  • the horizontal center line is the dividing line, and the weight difference between the vibration-free crankshaft connecting rod assembly portion of the internal combustion engine and
  • the weight difference corresponds to 5n, 10n or 15n, respectively, and n is the power of a single cylinder corresponding to the vibration-free crankshaft connecting rod assembly of the internal combustion engine.
  • the shape of the left crank is a circle, a rectangle, a square or a sector.
  • the weight difference is proportional to the power of the cylinder in which the cylinder is located, when the cylinder When the power is increased, the corresponding weight difference is correspondingly increased.
  • the weight difference just offsets the excess rotational inertia force acting on the link pin of the power stroke, and the remaining rotational inertia force is stored in the crankshaft to achieve the power stroke.
  • FIG. 1 is a schematic structural view of a vibration-free crankshaft connecting rod assembly of an internal combustion engine according to the present invention
  • FIG. 2 is a schematic view showing the inner surface of a left crank of a vibration-free crankshaft connecting rod assembly of the present invention.
  • an internal combustion engine vibration-free crankshaft connecting rod assembly includes a left crank 1, a right crank 2, a link pin 3, a bearing 6, and a connecting rod 4.
  • the left crank 1 and the right crank 2 are symmetrically arranged, and as shown by the broken lines in the figure, the outer surfaces of the left crank 1 and the right crank 2 are mounted with crankshafts whose shaft center lines are at the same horizontal line.
  • the axis centerline coincides with the horizontal centerline of the left crank.
  • the surface of the left crank 1 is divided into a left mounting portion 12 and a left weight portion 11 by a horizontal center line
  • the right crank 2 is divided into a right mounting portion 22 and a right weight portion 21 by a horizontal center line
  • the thickness of the right mounting portion 22 is smaller than Right weight portion 21.
  • the opposite positions of the left mounting portion 12 and the right mounting portion 22 are provided with mounting holes, and the two ends of the link pin 3 are respectively mounted in the mounting holes, and the bearing sleeve is sleeved on the link pin 3 between the left mounting portion and the right mounting portion.
  • One end of the connecting rod 4 is sleeved on the bearing.
  • the weight of the vibration-free crankshaft connecting rod assembly weight portion (including the left weight portion 11 and the right weight portion 21) of the internal combustion engine is greater than the mounting portion (including the left mounting portion 12, the right mounting portion 22,
  • the invention needs to symmetrically set the left crank and the right crank, but does not limit the shape of the left crank/right crank, that is, the left crank/right crank can be the currently common crank shape, such as a circle, a rectangle, a square, a fan, and the like. Since the same internal combustion engine vibration-free crankshaft connecting rod assembly only needs to determine the weight difference above and below the horizontal centerline, and the shape of the crank in the vibration-free crankshaft connecting rod assembly of the internal combustion engine is negligible, the different embodiments below are as shown in the figure. The circular crank shape shown in 2, the cranks of other different shapes are omitted.
  • the working principle of the invention when the engine is started to work on fire, the piston generates a driving force to the connecting rod pin through the connecting rod, so that the crankshaft rotates and generates a rotating inertial force. Since the weight of the weight portion is larger than the weight of the mounting portion, the weight difference is just right. The excess rotational inertia force acting on the link pin is offset by the power stroke, and the excess rotational inertia force is stored in the crankshaft to achieve the dynamic balance of the power stroke, thereby eliminating the vibration phenomenon of the engine running.
  • G1 The weight of the weight portion located below the horizontal center line in the vibration-free crankshaft connecting rod assembly of the internal combustion engine is defined as G1, and G1 includes the weights of the left weight portion 11 and the right weight portion 21, and the weight of the mounting portion above the horizontal center line Defined as G2, G2 includes the weights of the left mounting portion 12, the right mounting portion 22, the link pin 3, the bearing 6, and the link 4, and the weight difference between G1 and G2 is defined as G.
  • the present invention is applicable not only to a single-cylinder engine but also to a multi-cylinder engine. When it is a multi-cylinder engine, it is only necessary to separately calculate the link assemblies located in a single cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

La présente invention concerne un ensemble de bielle de vilebrequin sans vibration de moteur à combustion interne. Un vilebrequin gauche est symétrique par rapport à un vilebrequin droit, le vilebrequin gauche est divisé en une partie de montage gauche et une partie d'équilibrage de poids gauche, une différence de poids entre la partie de l'ensemble de bielle de vilebrequin au-dessous d'une ligne centrale horizontale et la partie de l'ensemble de bielle de vilebrequin au-dessus de la ligne centrale horizontale est G, G satisfait G = n*b, où n est une puissance de cylindre, dont l'unité est des kilowatts (kW); et b est compris entre 5 et 15 g/kW. Étant donné que la partie d'équilibrage de poids est plus lourde que la partie de montage, la vibration peut être éliminée sans arbre d'équilibrage, de façon à économiser de l'énergie et réduire les coûts.
PCT/CN2016/079977 2016-04-22 2016-04-22 Ensemble de bielle de vilebrequin sans vibration de moteur à combustion interne WO2017181398A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680000420.7A CN107454929A (zh) 2016-04-22 2016-04-22 一种内燃机无振动曲轴连杆组件
PCT/CN2016/079977 WO2017181398A1 (fr) 2016-04-22 2016-04-22 Ensemble de bielle de vilebrequin sans vibration de moteur à combustion interne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/079977 WO2017181398A1 (fr) 2016-04-22 2016-04-22 Ensemble de bielle de vilebrequin sans vibration de moteur à combustion interne

Publications (1)

Publication Number Publication Date
WO2017181398A1 true WO2017181398A1 (fr) 2017-10-26

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Application Number Title Priority Date Filing Date
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Country Status (2)

Country Link
CN (1) CN107454929A (fr)
WO (1) WO2017181398A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435059A (en) * 1993-10-18 1995-07-25 Chawla; Mohinder P. Advance balancing process for crankshaft
CN2572017Y (zh) * 2002-09-24 2003-09-10 重庆宗申技术开发研究有限公司 单缸四冲程摩托车汽油发动机平衡减振机构
CN103185103A (zh) * 2012-01-03 2013-07-03 福特环球技术公司 平衡传动单元的惯性力矩的方法和实施这种方法的传动单元
CN105571784A (zh) * 2015-12-18 2016-05-11 华晨汽车集团控股有限公司 一种发动机曲轴平衡率的检测方法
CN205715231U (zh) * 2016-04-22 2016-11-23 江门市蓬江区蓝金科技有限公司 一种内燃机无振动曲轴连杆组件

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5435059A (en) * 1993-10-18 1995-07-25 Chawla; Mohinder P. Advance balancing process for crankshaft
CN2572017Y (zh) * 2002-09-24 2003-09-10 重庆宗申技术开发研究有限公司 单缸四冲程摩托车汽油发动机平衡减振机构
CN103185103A (zh) * 2012-01-03 2013-07-03 福特环球技术公司 平衡传动单元的惯性力矩的方法和实施这种方法的传动单元
CN105571784A (zh) * 2015-12-18 2016-05-11 华晨汽车集团控股有限公司 一种发动机曲轴平衡率的检测方法
CN205715231U (zh) * 2016-04-22 2016-11-23 江门市蓬江区蓝金科技有限公司 一种内燃机无振动曲轴连杆组件

Also Published As

Publication number Publication date
CN107454929A (zh) 2017-12-08

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