WO2018159889A1 - Engine for vehicle - Google Patents

Engine for vehicle Download PDF

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Publication number
WO2018159889A1
WO2018159889A1 PCT/KR2017/002805 KR2017002805W WO2018159889A1 WO 2018159889 A1 WO2018159889 A1 WO 2018159889A1 KR 2017002805 W KR2017002805 W KR 2017002805W WO 2018159889 A1 WO2018159889 A1 WO 2018159889A1
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WO
WIPO (PCT)
Prior art keywords
shaft
engine
piston
water pump
balance shaft
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PCT/KR2017/002805
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French (fr)
Korean (ko)
Inventor
박재만
Original Assignee
주식회사 블루플래닛
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Publication of WO2018159889A1 publication Critical patent/WO2018159889A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/14—Engine-driven auxiliary devices combined into units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • 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
    • F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system

Definitions

  • the present invention relates to a vehicle engine, and more particularly, to a vehicle engine having a water pump connected to the balance shaft and interlocked when the balance shaft is rotated.
  • a vehicle such as an automobile, consists of a chassis and a body.
  • the chassis includes an engine, a suspension, a steering device, a power transmission device, and the like, and the body forms an exterior of the vehicle, and supports various devices or components forming the chassis.
  • An engine is a device that generates power to drive an automobile and obtains energy by compressing and burning fuel sucked into the engine.
  • These engines largely include various valve devices, lubricators, cooling devices, ignition devices, etc. in addition to basic configurations such as cylinders, cylinder heads, crankcases, pistons and connecting rods, crankshafts, flywheels, and the like.
  • the cooling device is a device for cooling the engine being driven to properly maintain the temperature of the engine.
  • a cooling device circulates cooling water in a water jacket formed in a cylinder block and a cylinder head to perform a cooling function, and includes a water jacket, a radiator, a water pump, a cooling fan, a water temperature regulator, and the like.
  • the general vehicle water pump 100 is mounted on one side of the engine 101 and is driven using the power of the engine 101, thereby circulating the coolant so that the engine 101 is appropriate. Allow to maintain the temperature.
  • the water pump 100 pumps the coolant using the power of the engine 101, thereby circulating the coolant through the water jacket of the cylinder block 103 and the cylinder head 105, and at this time, the water pump 100
  • the coolant circulated by the water is circulated again to the radiator 107 and undergoes a heat dissipation process, and then repeats the flow of water into the water pump 100.
  • the water pump 100 is connected to the crankshaft (not shown) and the drive belt 109, the crankshaft (not shown) that is operated when the engine 101 is driven
  • the rotational force of the drive belt 109 is received to form a structure for driving.
  • an object of the present invention is to provide a vehicle engine having a water pump connected to the balance shaft, and interlocked during rotation of the balance shaft.
  • the present invention at least one piston, a crank shaft for changing the vertical linear reciprocating motion of the at least one piston into a rotary motion, and formed to correspond to the at least one piston and the at least one piston and the crank shaft
  • a vehicle engine comprising at least one connecting rod for connecting a balance shaft and a balance shaft spaced apart from the crank shaft and rotated by the crank shaft, wherein the water is connected to the balance shaft and interlocked when the balance shaft is rotated.
  • An engine for a vehicle having a pump is provided.
  • the water pump includes a pump shaft and an impeller installed on the pump shaft, the pump shaft may be directly connected to one end in the longitudinal direction of the balance shaft.
  • the vehicle engine may further include a cylinder block that provides a mounting space for the at least one piston, the crankshaft, the at least one connecting rod, and the balance shaft, and an engine cover casing the cylinder block. have.
  • the vehicle engine may further include a water pump housing formed in the cylinder block and the engine cover, and the water pump may be mounted in the water pump housing.
  • the vehicle engine may further include a crank gear mounted to one longitudinal end portion of the crankshaft, and a balance gear mounted to one longitudinal end portion of the balance shaft and external to the crank gear.
  • the water when the balance shaft is rotated can be linked.
  • the drive belt which is a conventional rotational force transmission medium, can be omitted, thereby reducing the loss of power transmission caused by the increased frictional force caused by the drive belt.
  • the cooling efficiency can be improved, and the life of the parts can be extended and manufacturing cost can be reduced.
  • FIG. 1 is a perspective view showing a vehicle engine according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram illustrating a general engine cooling system.
  • FIG. 3 is a perspective view showing a vehicle engine according to the prior art.
  • a vehicle engine 10 is a device that generates power to drive a vehicle, and converts thermal energy into mechanical energy by compressing and burning fuel sucked into the vehicle. Let it be.
  • a vehicle engine 10 is formed including a cylinder block 20 and an engine cover 30 casing the cylinder block 20.
  • the cylinder block 20 provides a mounting space for the at least one piston 21, the crankshaft 22, the at least one connecting rod 24 and the balance shaft 25.
  • the cylinder block 20 may be formed in two, three, or four cylinders according to the number of cylinders formed therein.
  • the multi-cylinder engine 10 has a unique phase of the piston 21 for each cylinder in order to balance the combustion sequence.
  • the inherent movement of the piston 21 affects the pressure depending on the operation of the piston 21 that moves up and down by each cylinder, or may be offset by the relative movement of the piston 21 for each cylinder.
  • an embodiment of the present invention illustrates a two-cylinder engine, but is not limited thereto.
  • Two cylinders are formed in the cylinder block 20 according to the embodiment of the present invention. At this time, in each cylinder, a piston 21 for compressing and exploding the mixed air mixed with the fuel is provided so as to be able to reciprocate vertically.
  • Each piston 21 is connected to the connecting rod 24, the lower end of the connecting rod 24 is connected to the crankshaft 22 for converting the up and down linear reciprocating motion of the piston 21 into a rotary motion.
  • the rotational force of the crankshaft 22 is to be transmitted to the transmission (not shown) to change the rotational speed through the clutch (not shown).
  • crankshaft 22 is rotated by the movement of the lowering piston 21, that is, the force transmitted to the lowering of the piston 21 in the explosion stroke, when the mixed air explodes in the cylinder, the other stroke During intake, compression, and exhaust strokes, they are forced to stop the rotation. Therefore, a flywheel 22a is mounted at one end of the crankshaft 22 so as to cause rotational inertia and suppress the force of the crankshaft 22 to stop as much as possible. For this reason, the crankshaft 22 makes smooth rotation regardless of each stroke as mentioned above. However, when the engine 10 is driven, the piston 21 linearly reciprocates up and down, while the crankshaft 22 rotates, so that the vertical force and the piston 21 which are upward forces on the piston 21 moved downwards. ) Inequality moment is generated in the two-dimensional direction due to the horizontal force against the lateral fluctuation, and therefore, the engine 10 is severely shaken.
  • the balance shaft 25 is spaced apart in parallel with the crank shaft 22, and rotates by the crank shaft 22.
  • the balance shaft 25 is integrally provided with a deflected weight called the weight 25a.
  • the balance shaft 25 serves to cancel the vibration of the engine 10 according to the above inequality moment.
  • the balance shaft 25 is disposed long over the longitudinal direction of the engine 10. Through this, the center of gravity of the engine 10 comes to the longitudinal center of the engine 10, which has the effect of minimizing the vibration of the engine 10.
  • crank gear 23 is mounted at the other end of the crank shaft 22 in which the flywheel 22a is mounted at one side in the longitudinal direction.
  • a balance gear 26 is mounted at the longitudinal end of the balance shaft 25. At this time, the crank gear 23 and the balance gear 26 are external. Accordingly, the rotational force of the crankshaft 22 is transmitted to the balance shaft 25 through the crank gear 23 and the balance gear 26, and thus, the balance shaft 25 also rotates when the crank shaft 22 rotates. do.
  • the vehicle engine 10 further includes a valve device, a lubrication device, a cooling device and an ignition device.
  • the cooling device is a cooling action by circulating the cooling water in the water jacket formed in the cylinder block 20, and is formed including a water jacket, a radiator, a water pump 50, a cooling fan, a water temperature regulator, and the like. .
  • the vehicle engine 10 includes a water pump 50 connected to the balance shaft 25. Accordingly, the water pump 50 is interlocked when the balance shaft 25 rotates.
  • the water pump 50 includes a pump shaft 51 and an impeller 52 installed on the pump shaft 51.
  • the pump shaft 51 is directly connected to one end portion in the longitudinal direction of the balance shaft 25. That is, the pump shaft 51 is directly connected to one end of the balance shaft 25 in the longitudinal direction, and the balance gear 26 is mounted to the other end of the balance shaft 25 in the longitudinal direction.
  • the pump shaft 51 of the water pump 50 is directly connected to one end of the balance shaft 25 in the longitudinal direction, due to the rotation of the crank shaft 22 according to the vertical and vertical linear reciprocation of the piston 21.
  • the pump shaft 51 of the water pump 50 directly connected thereto also rotates.
  • the impeller 52 installed on the outer circumferential surface thereof rotates to circulate the cooling water.
  • the vehicle engine 10 according to an embodiment of the present invention further includes a water pump housing 60.
  • the water pump housing 60 is formed in the cylinder block 20 and the engine cover 30.
  • the water pump housing 60 provides a mounting space of the water pump 50.
  • crankshaft 22 converts the vertical linear reciprocating motion of the piston 21 into a rotational motion to rotate. do.
  • the pump shaft 51 of the water pump 50 directly connected thereto also rotates. That is, the water pump 50 is driven by the rotation of the balance shaft 250.
  • the impeller 52 fixed to its outer peripheral surface rotates to circulate the cooling water.
  • the coolant circulated by the water pump 50 is circulated back to the radiator (107 in Fig. 2) and undergoes a heat dissipation process, and then flows back into the water pump 50 to circulate again.
  • the engine 10 maintains a proper temperature during operation.
  • the vehicle engine 10 includes a water pump 50 to which the pump shaft 51 is directly connected at one end in the longitudinal direction of the balance shaft 25.
  • the water pump 50 when the water pump 50 is directly connected to the balance shaft 25, unlike the conventional water pump driven by receiving the rotational force of the crankshaft 22 through the driving belt (109 of FIG. 3), the balance shaft At the time of rotation of 25, the water pump 50 can be driven in conjunction with each other.
  • the vehicle engine 10 according to the embodiment of the present invention may omit the driving belt (109 of FIG. 3), which is a rotational force transmission medium of the crankshaft 22, which is conventionally used.
  • the vehicle engine 10 according to the embodiment of the present invention can reduce the loss of power transmission caused by the increased frictional force by the conventional drive belt (109 of FIG. 3), thereby improving the cooling efficiency.
  • the lifespan and manufacturing cost of parts can be reduced.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to an engine for a vehicle and, more particularly, to an engine for a vehicle, wherein the engine is provided with a water pump that is connected to a balance shaft and moves together with the balance shaft when the balance shaft rotates. To this end, the present invention provides an engine for a vehicle, the engine comprising: at least one piston; a crank shaft which converts a vertically linear reciprocating motion of the at least one piston into a rotating motion; at least one connecting rod which is formed corresponding to the at least one piston, and connects the at least one piston and the crank shaft; and a balance shaft which is disposed spaced apart from the crank shaft and is rotated by the crank shaft, wherein the engine is provided with a water pump that is connected to the balance shaft and moves together with the balance shaft when the balance shaft rotates.

Description

차량용 엔진Car engine
본 발명은 차량용 엔진에 관한 것으로서 더욱 상세하게는 밸런스 샤프트에 연결되어, 밸런스 샤프트의 회전 시 연동되는 워터펌프를 구비하는 차량용 엔진에 관한 것이다.The present invention relates to a vehicle engine, and more particularly, to a vehicle engine having a water pump connected to the balance shaft and interlocked when the balance shaft is rotated.
일반적으로, 차량, 예컨대, 자동차는 새시와 바디로 구성된다. 이때, 새시는 엔진, 서스펜션, 스티어링 장치, 동력 전달 장치 등을 구비하고, 바디는 자동차의 외부를 이루며, 상기 새시를 이루는 각종 장치나 부품을 지지한다.In general, a vehicle, such as an automobile, consists of a chassis and a body. In this case, the chassis includes an engine, a suspension, a steering device, a power transmission device, and the like, and the body forms an exterior of the vehicle, and supports various devices or components forming the chassis.
엔진은 자동차를 구동시키기 위해 동력을 발생시키는 장치로, 엔진의 내부로 흡입되는 연료를 압축하여 연소시킴으로써 에너지를 얻는다. 이러한 엔진은 크게 실린더, 실린더 헤드, 크랭크 케이스, 피스톤과 커넥팅 로드, 크랭크 샤프트, 플라이 휠 등과 같은 기본 구성에 더해, 각종 밸브장치, 윤활장치, 냉각장치 및 점화장치 등을 포함한다.An engine is a device that generates power to drive an automobile and obtains energy by compressing and burning fuel sucked into the engine. These engines largely include various valve devices, lubricators, cooling devices, ignition devices, etc. in addition to basic configurations such as cylinders, cylinder heads, crankcases, pistons and connecting rods, crankshafts, flywheels, and the like.
여기서, 냉각장치는 구동 중인 엔진을 냉각하여 엔진의 온도를 적정하게 유지시키는 장치이다. 이와 같은 냉각장치는 실린더 블록과 실린더 헤드에 형성되어 있는 워터재킷 내에 냉각수를 순환시켜 냉각작용을 하는 것으로, 워터재킷을 비롯하여 라디에이터, 워터펌프, 냉각팬, 수온 조절기 등을 포함하여 형성된다.Here, the cooling device is a device for cooling the engine being driven to properly maintain the temperature of the engine. Such a cooling device circulates cooling water in a water jacket formed in a cylinder block and a cylinder head to perform a cooling function, and includes a water jacket, a radiator, a water pump, a cooling fan, a water temperature regulator, and the like.
도 2에 도시한 바와 같이, 일반적인 차량용 워터펌프(100)는 엔진(101)의 일측에 장착되어 엔진(101)의 동력을 이용하여 구동하고, 이를 통해, 냉각수를 순환시켜 엔진(101)이 적정온도를 유지할 수 있도록 한다.As shown in FIG. 2, the general vehicle water pump 100 is mounted on one side of the engine 101 and is driven using the power of the engine 101, thereby circulating the coolant so that the engine 101 is appropriate. Allow to maintain the temperature.
즉, 워터펌프(100)는 엔진(101)의 동력을 이용하여 냉각수를 펌핑함으로써, 실린더 블록(103) 및 실린더 헤드(105)의 워터재킷으로 냉각수를 순환시키고, 이때, 워터펌프(100)에 의해 순환된 냉각수는 다시 라디에이터(107)로 순환되어 방열과정을 거친 후, 다시 워터펌프(100)로 유입되어 순환하는 과정을 반복하게 된다.That is, the water pump 100 pumps the coolant using the power of the engine 101, thereby circulating the coolant through the water jacket of the cylinder block 103 and the cylinder head 105, and at this time, the water pump 100 The coolant circulated by the water is circulated again to the radiator 107 and undergoes a heat dissipation process, and then repeats the flow of water into the water pump 100.
이때, 도 3에 도시한 바와 같이, 종래기술에 따른 워터펌프(100)는 크랭크 샤프트(미도시)와 구동 벨트(109)로 연결되어, 엔진(101) 구동 시 동작되는 크랭크 샤프트(미도시)의 회전력을 구동 벨트(109)를 통해 전달받아 구동하는 구조를 이룬다.At this time, as shown in Figure 3, the water pump 100 according to the prior art is connected to the crankshaft (not shown) and the drive belt 109, the crankshaft (not shown) that is operated when the engine 101 is driven The rotational force of the drive belt 109 is received to form a structure for driving.
하지만, 이와 같은 구조로 워터펌프(100)가 엔진(101)에 장착되면, 구동 벨트(109)에 의한 마찰력 증가로 인해 동력 전달에 손실이 발생되고, 이로 인해, 냉각 효율이 점차 저하되는 문제가 있었다.However, when the water pump 100 is mounted on the engine 101 in such a structure, a loss occurs in power transmission due to an increase in frictional force by the drive belt 109, and thus, the cooling efficiency gradually decreases. there was.
본 발명은 상술한 바와 같은 종래기술의 문제점을 해결하기 위해 안출된 것으로서, 본 발명의 목적은 밸런스 샤프트에 연결되어, 밸런스 샤프트의 회전 시 연동되는 워터펌프를 구비하는 차량용 엔진을 제공하는 것이다.The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide a vehicle engine having a water pump connected to the balance shaft, and interlocked during rotation of the balance shaft.
이를 위해, 본 발명은, 적어도 하나의 피스톤, 상기 적어도 하나의 피스톤의 상하 직선 왕복운동을 회전운동으로 변화시키는 크랭크 샤프트, 상기 적어도 하나의 피스톤과 대응되게 형성되고 상기 적어도 하나의 피스톤과 상기 크랭크 샤프트를 연결하는 적어도 하나의 커넥팅 로드 및 상기 크랭크 샤프트와 이격되어 배치되고 상기 크랭크 샤프트에 의해 회전하는 밸런스 샤프트를 포함하는 차량용 엔진에 있어서, 상기 밸런스 샤프트에 연결되어, 상기 밸런스 샤프트의 회전 시 연동되는 워터펌프를 구비하는 차량용 엔진을 제공한다.To this end, the present invention, at least one piston, a crank shaft for changing the vertical linear reciprocating motion of the at least one piston into a rotary motion, and formed to correspond to the at least one piston and the at least one piston and the crank shaft A vehicle engine comprising at least one connecting rod for connecting a balance shaft and a balance shaft spaced apart from the crank shaft and rotated by the crank shaft, wherein the water is connected to the balance shaft and interlocked when the balance shaft is rotated. An engine for a vehicle having a pump is provided.
여기서, 상기 워터펌프는 펌프축 및 상기 펌프축에 설치되는 임펠러를 포함하고, 상기 펌프축은 상기 밸런스 샤프트의 길이방향 일측 단부에 직결될 수 있다.Here, the water pump includes a pump shaft and an impeller installed on the pump shaft, the pump shaft may be directly connected to one end in the longitudinal direction of the balance shaft.
또한, 상기 차량용 엔진은, 상기 적어도 하나의 피스톤, 상기 크랭크 샤프트, 상기 적어도 하나의 커넥팅 로드 및 상기 밸런스 샤프트의 장착 공간을 제공하는 실린더 블록, 및 상기 실린더 블록을 케이싱하는 엔진커버를 더 포함할 수 있다.The vehicle engine may further include a cylinder block that provides a mounting space for the at least one piston, the crankshaft, the at least one connecting rod, and the balance shaft, and an engine cover casing the cylinder block. have.
이때, 상기 차량용 엔진은, 상기 실린더 블록 및 상기 엔진커버에 형성되는 워터펌프 하우징을 더 구비하고, 상기 워터펌프는 상기 워터펌프 하우징에 장착될 수 있다.In this case, the vehicle engine may further include a water pump housing formed in the cylinder block and the engine cover, and the water pump may be mounted in the water pump housing.
그리고 상기 차량용 엔진은, 상기 크랭크 샤프트의 길이방향 일측 단부에 장착되는 크랭크 기어, 및 상기 밸런스 샤프트의 길이방향 일측 단부에 장착되고 상기 크랭크 기어와 외접하는 밸런스 기어를 더 포함할 수 있다.The vehicle engine may further include a crank gear mounted to one longitudinal end portion of the crankshaft, and a balance gear mounted to one longitudinal end portion of the balance shaft and external to the crank gear.
본 발명에 따르면, 밸런스 샤프트의 길이방향 일측 단부에 펌프축이 직결되는 워터펌프를 구비함으로써, 크랭크 샤프트의 회전력을 구동 벨트를 통해 전달받아 구동되는 종래의 워터펌프와 달리, 밸런스 샤프트의 회전 시 워터펌프를 연동시킬 수 있다.According to the present invention, by providing a water pump directly connected to the pump shaft at one end in the longitudinal direction of the balance shaft, unlike the conventional water pump driven by receiving the rotational force of the crankshaft through the drive belt, the water when the balance shaft is rotated The pump can be linked.
이와 같이, 밸런스 샤프트에 워터펌프의 펌프축이 직결되면, 종래의 회전력 전달매체인 구동 벨트를 생략할 수 있어, 구동 벨트에 의한 마찰력 증가로 인해 발생되던 동력 전달의 손실을 줄일 수 있고, 그 결과, 냉각 효율을 향상시킬 수 있으며, 아울러, 부품들의 수명 연장 및 제조원가 또한 절감할 수 있다.As such, when the pump shaft of the water pump is directly connected to the balance shaft, the drive belt, which is a conventional rotational force transmission medium, can be omitted, thereby reducing the loss of power transmission caused by the increased frictional force caused by the drive belt. In addition, the cooling efficiency can be improved, and the life of the parts can be extended and manufacturing cost can be reduced.
도 1은 본 발명의 실시 예에 따른 차량용 엔진을 나타낸 사시도이다.1 is a perspective view showing a vehicle engine according to an embodiment of the present invention.
도 2는 일반적인 엔진용 냉각 시스템을 설명하기 위한 개략도이다.2 is a schematic diagram illustrating a general engine cooling system.
도 3은 종래기술에 따른 차량용 엔진을 나타낸 사시도이다.3 is a perspective view showing a vehicle engine according to the prior art.
이하에서는 첨부된 도면들을 참조하여 본 발명의 실시 예에 따른 차량용 엔진에 대해 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in detail for the vehicle engine according to an embodiment of the present invention.
아울러, 본 발명을 설명함에 있어서, 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단된 경우 그 상세한 설명은 생략한다.In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.
도 1에 도시한 바와 같이, 본 발명의 실시 예에 따른 차량용 엔진(10)은 차량을 구동시키기 위해 동력을 발생시키는 장치로, 내부로 흡입되는 연료를 압축하여 연소시킴으로써 열 에너지를 기계적 에너지로 변환시킨다. 본 발명의 실시 예에서, 이러한 차량용 엔진(10)은 실린더 블록(20) 및 실린더 블록(20)을 케이싱하는 엔진커버(30)를 포함하여 형성된다.As shown in FIG. 1, a vehicle engine 10 according to an exemplary embodiment of the present invention is a device that generates power to drive a vehicle, and converts thermal energy into mechanical energy by compressing and burning fuel sucked into the vehicle. Let it be. In an embodiment of the present invention, such a vehicle engine 10 is formed including a cylinder block 20 and an engine cover 30 casing the cylinder block 20.
여기서, 실린더 블록(20)은 적어도 하나의 피스톤(21), 크랭크 샤프트(22), 적어도 하나의 커넥팅 로드(24) 및 밸런스 샤프트(25)의 장착 공간을 제공한다.Here, the cylinder block 20 provides a mounting space for the at least one piston 21, the crankshaft 22, the at least one connecting rod 24 and the balance shaft 25.
실린더 블록(20)은 내부에 형성되는 실린더의 개수에 따라 2기통, 3기통 또는 4기통으로 형성될 수 있다.The cylinder block 20 may be formed in two, three, or four cylinders according to the number of cylinders formed therein.
다기통의 엔진(10)은 연소 순서와 밸런스를 맞추기 위해, 각 기통 별로 피스톤(21)의 고유 위상을 가진다. 이와 같은 피스톤(21)의 고유 움직임은 각 기통 별로 상하 운동하는 피스톤(21)의 작동에 따라 압력에 영향을 미치거나, 기통 별 피스톤(21)의 상대 움직임으로 상쇄되기도 한다.The multi-cylinder engine 10 has a unique phase of the piston 21 for each cylinder in order to balance the combustion sequence. The inherent movement of the piston 21 affects the pressure depending on the operation of the piston 21 that moves up and down by each cylinder, or may be offset by the relative movement of the piston 21 for each cylinder.
예를 들어, 3기통 엔진의 경우, 크랭크 샤프트가 120도의 위상 차이를 가지므로, 1개의 피스톤이 상승하고, 나머지 2개의 피스톤이 하강하면서 압력을 변동시킨다. 또한, 2기통 엔진의 경우, 각 기통 별 위상 차이가 없으므로, 2개의 피스톤(21)이 동일 위상으로 상하 운동하면서 피스톤(21)의 행정 체적만큼 압력을 미치게 된다.For example, in the case of a three-cylinder engine, since the crankshaft has a phase difference of 120 degrees, one piston rises, and the other two pistons descend to change pressure. In addition, in the case of the two-cylinder engine, since there is no phase difference for each cylinder, the two pistons 21 exert pressure by the stroke volume of the piston 21 while moving up and down in the same phase.
이하, 본 발명의 실시 예에서는 2기통 엔진을 예시하나, 이에 한정되는 것은 아니다.Hereinafter, an embodiment of the present invention illustrates a two-cylinder engine, but is not limited thereto.
본 발명의 실시 예에 따른 실린더 블록(20)에는 2개의 실린더가 형성되어 있다. 이때, 각 실린더 내에는 연료와 혼합된 혼합공기를 압축하여 폭발시키는 피스톤(21)이 상하 직선 왕복운동 가능하게 설치되어 있다.Two cylinders are formed in the cylinder block 20 according to the embodiment of the present invention. At this time, in each cylinder, a piston 21 for compressing and exploding the mixed air mixed with the fuel is provided so as to be able to reciprocate vertically.
각각의 피스톤(21)은 커넥팅 로드(24)와 연결되고, 커넥팅 로드(24)의 하단에는 피스톤(21)의 상하 직선 왕복운동을 회전운동으로 전환하는 크랭크 샤프트(22)가 연결되어 있다. 이때, 크랭크 샤프트(22)의 회전력은 클러치(미도시)를 통해 회전속도를 바꾸어주는 변속기(미도시)로 전달될 수 있도록 되어 있다.Each piston 21 is connected to the connecting rod 24, the lower end of the connecting rod 24 is connected to the crankshaft 22 for converting the up and down linear reciprocating motion of the piston 21 into a rotary motion. At this time, the rotational force of the crankshaft 22 is to be transmitted to the transmission (not shown) to change the rotational speed through the clutch (not shown).
여기서, 크랭크 샤프트(22)는 실린더 내에서 혼합공기가 폭발할 경우, 하강되는 피스톤(21)의 움직임, 즉, 폭발 행정에서의 피스톤(21) 하강으로 전달된 힘에 의해 회전하며, 다른 행정인 흡입, 압축, 배기 행정 동안에는 오히려 회전을 멈추려고 하는 힘을 받게 된다. 따라서, 크랭크 샤프트(22)의 일측 단부에는 회전 관성을 유발하여 크랭크 샤프트(22)가 멈추려고 하는 힘을 최대한 억제시키기 위한 플라이 휠(22a)이 장착되어 있다. 이로 인해, 클랭크 샤프트(22)는 상기와 같은 각 행정에 상관 없이 원활한 회전을 하게 된다. 그러나 엔진(10) 구동 시, 피스톤(21)은 상하 직선 왕복운동을 하는 반면, 크랭크 샤프트(22)는 회전운동을 하므로, 아래로 이동되는 피스톤(21)에 위로 향하는 힘인 수직 우력과 피스톤(21) 횡 방향 요동에 대한 수평 우력에 기인하여 2차원 방향으로 불평등 모멘트가 발생되며, 따라서, 엔진(10)이 심하게 떨리는 문제가 있다.Here, the crankshaft 22 is rotated by the movement of the lowering piston 21, that is, the force transmitted to the lowering of the piston 21 in the explosion stroke, when the mixed air explodes in the cylinder, the other stroke During intake, compression, and exhaust strokes, they are forced to stop the rotation. Therefore, a flywheel 22a is mounted at one end of the crankshaft 22 so as to cause rotational inertia and suppress the force of the crankshaft 22 to stop as much as possible. For this reason, the crankshaft 22 makes smooth rotation regardless of each stroke as mentioned above. However, when the engine 10 is driven, the piston 21 linearly reciprocates up and down, while the crankshaft 22 rotates, so that the vertical force and the piston 21 which are upward forces on the piston 21 moved downwards. ) Inequality moment is generated in the two-dimensional direction due to the horizontal force against the lateral fluctuation, and therefore, the engine 10 is severely shaken.
밸런스 샤프트(25)는 크랭크 샤프트(22)와 평행하게 이격되어 배치되고, 크랭크 샤프트(22)에 의해 회전한다. 또한, 밸런스 샤프트(25)는 웨이트(25a)라 불리는 편향된 무게추를 일체로 구비하고 있다. 이러한 밸런스 샤프트(25)는 상술한 불평등 모멘트에 따른 엔진(10) 진동을 상쇄시키는 역할을 한다.The balance shaft 25 is spaced apart in parallel with the crank shaft 22, and rotates by the crank shaft 22. In addition, the balance shaft 25 is integrally provided with a deflected weight called the weight 25a. The balance shaft 25 serves to cancel the vibration of the engine 10 according to the above inequality moment.
이때, 밸런스 샤프트(25)는 엔진(10)의 길이방향에 걸쳐 길게 배치된다. 이를 통해, 엔진(10)의 무게 중심이 엔진(10)의 길이방향 중심에 오게 되며, 이는 엔진(10)의 진동을 최소화시키는 효과가 있다.At this time, the balance shaft 25 is disposed long over the longitudinal direction of the engine 10. Through this, the center of gravity of the engine 10 comes to the longitudinal center of the engine 10, which has the effect of minimizing the vibration of the engine 10.
또한, 본 발명의 실시 예에서, 길이방향 일측에 플라이 휠(22a)이 장착되는 크랭크 샤프트(22)의 길이 방향 타측 단부에는 크랭크 기어(23)가 장착된다. 또한, 밸런스 샤프트(25)의 길이방향 단부에는 밸런스 기어(26)가 장착된다. 이때, 크랭크 기어(23)와 밸런스 기어(26)는 외접한다. 따라서, 크랭크 샤프트(22)의 회전력은 크랭크 기어(23), 밸런스 기어(26)를 통해 밸런스 샤프트(25)에 전달되고, 이에 따라, 크랭크 샤프트(22) 회전 시 밸런스 샤프트(25) 또한 회전하게 된다.In addition, in the embodiment of the present invention, the crank gear 23 is mounted at the other end of the crank shaft 22 in which the flywheel 22a is mounted at one side in the longitudinal direction. In addition, a balance gear 26 is mounted at the longitudinal end of the balance shaft 25. At this time, the crank gear 23 and the balance gear 26 are external. Accordingly, the rotational force of the crankshaft 22 is transmitted to the balance shaft 25 through the crank gear 23 and the balance gear 26, and thus, the balance shaft 25 also rotates when the crank shaft 22 rotates. do.
한편, 구체적으로 도시하진 않았지만, 본 발명의 실시 예에 따른 차량용 엔진(10)은 밸브장치, 윤활장치, 냉각장치 및 점화장치를 더 포함한다.On the other hand, although not shown in detail, the vehicle engine 10 according to an embodiment of the present invention further includes a valve device, a lubrication device, a cooling device and an ignition device.
이때, 냉각장치는 실린더 블록(20)에 형성되어 있는 워터재킷 내에 냉각수를 순환시켜 냉각작용을 하는 것으로, 워터재킷을 비롯하여 라디에이터, 워터펌프(50), 냉각팬, 수온 조절기 등을 포함하여 형성된다.At this time, the cooling device is a cooling action by circulating the cooling water in the water jacket formed in the cylinder block 20, and is formed including a water jacket, a radiator, a water pump 50, a cooling fan, a water temperature regulator, and the like. .
본 발명의 실시 예에 따른 차량용 엔진(10)은 밸런스 샤프트(25)에 연결되는 워터펌프(50)를 구비한다. 이에 따라, 워터펌프(50)는 밸런스 샤프트(25)의 회전 시 연동된다.The vehicle engine 10 according to the embodiment of the present invention includes a water pump 50 connected to the balance shaft 25. Accordingly, the water pump 50 is interlocked when the balance shaft 25 rotates.
이를 보다 상세히 설명하면, 본 발명의 실시 예에 따른 워터펌프(50)는 펌프축(51) 및 펌프축(51)에 설치되는 임펠러(52)를 포함한다. 이때, 펌프축(51)은 밸런스 샤프트(25)의 길이방향 일측 단부에 직결된다. 즉, 밸런스 샤프트(25)의 길이방향 일측 단부에는 펌프축(51)이 직결되고, 길이방향 타측 단부에는 밸런스 기어(26)가 장착된다.In more detail, the water pump 50 according to the embodiment of the present invention includes a pump shaft 51 and an impeller 52 installed on the pump shaft 51. At this time, the pump shaft 51 is directly connected to one end portion in the longitudinal direction of the balance shaft 25. That is, the pump shaft 51 is directly connected to one end of the balance shaft 25 in the longitudinal direction, and the balance gear 26 is mounted to the other end of the balance shaft 25 in the longitudinal direction.
이와 같이, 밸런스 샤프트(25)의 길이방향 일측 단부에 워터펌프(50)의 펌프축(51)이 직결됨에 따라, 피스톤(21)의 상하 직선 왕복운동에 따른 크랭크 샤프트(22)의 회전으로 인해 밸런스 샤프트(25)가 회전하게 되면, 이와 직결되어 있는 워터펌프(50)의 펌프축(51) 또한 회전하게 된다. 그리고 펌프축(51)이 회전함에 따라, 이의 외주면에 설치되어 있는 임펠러(52)가 회전하여 냉각수를 순환시키게 된다.As such, as the pump shaft 51 of the water pump 50 is directly connected to one end of the balance shaft 25 in the longitudinal direction, due to the rotation of the crank shaft 22 according to the vertical and vertical linear reciprocation of the piston 21. When the balance shaft 25 rotates, the pump shaft 51 of the water pump 50 directly connected thereto also rotates. As the pump shaft 51 rotates, the impeller 52 installed on the outer circumferential surface thereof rotates to circulate the cooling water.
한편, 본 발명의 실시 예에 따른 차량용 엔진(10)은 워터펌프 하우징(60)을 더 구비한다.On the other hand, the vehicle engine 10 according to an embodiment of the present invention further includes a water pump housing 60.
워터펌프 하우징(60)은 실린더 블록(20) 및 엔진커버(30)에 형성된다. 이러한 워터펌프 하우징(60)은 워터펌프(50)의 장착 공간을 제공한다.The water pump housing 60 is formed in the cylinder block 20 and the engine cover 30. The water pump housing 60 provides a mounting space of the water pump 50.
이하, 본 발명의 실시 예에 따른 차량용 엔진의 작용에 대하여 설명하기로 한다.Hereinafter, the operation of the vehicle engine according to an embodiment of the present invention will be described.
먼저, 실린더 블록(20) 내의 실린더에 각각 장착되어 있는 피스톤(21)이 상하 직선 왕복운동을 하게 되면, 크랭크 샤프트(22)는 이러한 피스톤(21)의 상하 직선 왕복운동을 회전운동으로 전환하여 회전한다.First, when the pistons 21 mounted on the cylinders in the cylinder block 20 each perform a vertical linear reciprocating motion, the crankshaft 22 converts the vertical linear reciprocating motion of the piston 21 into a rotational motion to rotate. do.
그 다음, 이러한 크랭크 샤프트(22)의 회전력은 크랭크 기어(23), 밸런스 기어(26)를 통해 밸런스 샤프트(25)에 전달되고, 이에 따라, 크랭크 샤프트(22) 회전 시 밸런스 샤프트(25) 또한 회전하게 된다.Then, the rotational force of the crankshaft 22 is transmitted to the balance shaft 25 through the crank gear 23, the balance gear 26, and thus also the balance shaft 25 when the crank shaft 22 rotates. Will rotate.
이와 같이, 밸런스 샤프트(25)가 회전하게 되면, 이와 직결되어 있는 워터펌프(50)의 펌프축(51)도 회전하게 된다. 즉, 밸런스 샤프트(250의 회전에 의해 워터펌프(50)가 구동하게 된다. 그리고 펌프축(51)이 회전함에 따라, 이의 외주면에 고정 설치되어 있는 임펠러(52)가 회전하여 냉각수를 순환시키게 된다. 이때, 워터펌프(50)에 의해 순환된 냉각수는 다시 라디에이터(도 2의 107)로 순환되어 방열과정을 거친 후, 다시 워터펌프(50)로 유입되어 순환하는 과정을 반복하게 된다. 이러한 워터펌프(50)에 의한 냉각수의 순환을 통해 엔진(10)은 구동 중 적정 온도를 유지하게 된다.As such, when the balance shaft 25 rotates, the pump shaft 51 of the water pump 50 directly connected thereto also rotates. That is, the water pump 50 is driven by the rotation of the balance shaft 250. As the pump shaft 51 rotates, the impeller 52 fixed to its outer peripheral surface rotates to circulate the cooling water. At this time, the coolant circulated by the water pump 50 is circulated back to the radiator (107 in Fig. 2) and undergoes a heat dissipation process, and then flows back into the water pump 50 to circulate again. Through the circulation of the coolant by the pump 50, the engine 10 maintains a proper temperature during operation.
상술한 바와 같이, 본 발명의 실시 예에 따른 차량용 엔진(10)은 밸런스 샤프트(25)의 길이방향 일측 단부에 펌프축(51)이 직결되는 워터펌프(50)를 구비한다. 이와 같이, 밸런스 샤프트(25)에 워터펌프(50)가 직접 연결되면, 크랭크 샤프트(22)의 회전력을 구동 벨트(도 3의 109)를 통해 전달받아 구동되는 종래의 워터펌프와 달리, 밸런스 샤프트(25)의 회전 시 워터펌프(50)를 연동시켜 구동시킬 수 있게 된다. 이에 따라, 본 발명의 실시 예에 따른 차량용 엔진(10)은 종래에 사용되던 크랭크 샤프트(22)의 회전력 전달매체인 구동 벨트(도 3의 109)를 생략할 수 있다. 그 결과, 본 발명의 실시 예에 따른 차량용 엔진(10)은 종래 구동 벨트(도 3의 109)에 의한 마찰력 증가로 인해 발생되던 동력 전달의 손실을 줄일 수 있고, 이를 통해, 냉각 효율을 향상시킬 수 있으며, 아울러, 부품들의 수명 연장 및 제조원가 또한 절감할 수 있다.As described above, the vehicle engine 10 according to the embodiment of the present invention includes a water pump 50 to which the pump shaft 51 is directly connected at one end in the longitudinal direction of the balance shaft 25. As such, when the water pump 50 is directly connected to the balance shaft 25, unlike the conventional water pump driven by receiving the rotational force of the crankshaft 22 through the driving belt (109 of FIG. 3), the balance shaft At the time of rotation of 25, the water pump 50 can be driven in conjunction with each other. Accordingly, the vehicle engine 10 according to the embodiment of the present invention may omit the driving belt (109 of FIG. 3), which is a rotational force transmission medium of the crankshaft 22, which is conventionally used. As a result, the vehicle engine 10 according to the embodiment of the present invention can reduce the loss of power transmission caused by the increased frictional force by the conventional drive belt (109 of FIG. 3), thereby improving the cooling efficiency. In addition, the lifespan and manufacturing cost of parts can be reduced.
이상과 같이 본 발명은 비록 한정된 실시 예와 도면에 의해 설명되었으나, 본 발명은 상기의 실시 예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다.As described above, although the present invention has been described with reference to the limited embodiments and the drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.
그러므로 본 발명의 범위는 설명된 실시 예에 국한되어 정해져서는 아니 되며, 후술하는 특허청구범위뿐만 아니라 특허청구범위와 균등한 것들에 의해 정해져야 한다.Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.
[부호의 설명][Description of the code]
10; 엔진 20; 실린더 블록10; Engine 20; Cylinder block
21; 피스톤 22; 크랭크 샤프트21; Piston 22; crankshaft
22a; 플라이 휠 23; 크랭크 기어22a; Fly wheel 23; Crank gear
24; 커넥팅 로드 25; 밸런스 샤프트24; Connecting rod 25; Balance shaft
25a; 웨이트 26; 밸런스 기어25a; Weight 26; Balance gear
30; 엔진커버 50; 워터펌프30; Engine cover 50; Water pump
51; 펌프 샤프트 52; 임펠러51; Pump shaft 52; Impeller
60; 워터펌프 하우징 100; 워터펌프60; Water pump housing 100; Water pump
101; 엔진 103; 실린더 블록101; Engine 103; Cylinder block
105; 실린더 헤드 107; 라디에이터105; Cylinder head 107; radiator
109; 구동 벨트109; Drive belt

Claims (5)

  1. 적어도 하나의 피스톤, 상기 적어도 하나의 피스톤의 상하 직선 왕복운동을 회전운동으로 변화시키는 크랭크 샤프트, 상기 적어도 하나의 피스톤과 대응되게 형성되고 상기 적어도 하나의 피스톤과 상기 크랭크 샤프트를 연결하는 적어도 하나의 커넥팅 로드 및 상기 크랭크 샤프트와 이격되어 배치되고 상기 크랭크 샤프트에 의해 회전하는 밸런스 샤프트를 포함하는 차량용 엔진에 있어서,At least one piston, a crankshaft for changing the up and down linear reciprocating motion of the at least one piston into a rotary motion, and at least one connecting portion formed to correspond to the at least one piston and connecting the at least one piston and the crankshaft. In a vehicle engine comprising a load shaft and a balance shaft disposed spaced apart from the crank shaft and rotated by the crank shaft,
    상기 밸런스 샤프트에 연결되어, 상기 밸런스 샤프트의 회전 시 연동되는 워터펌프를 구비하는 차량용 엔진.A vehicle engine connected to the balance shaft and having a water pump that is interlocked when the balance shaft rotates.
  2. 제1항에 있어서,The method of claim 1,
    상기 워터펌프는 펌프축 및 상기 펌프축에 설치되는 임펠러를 포함하고,The water pump includes a pump shaft and an impeller installed on the pump shaft,
    상기 펌프축은 상기 밸런스 샤프트의 길이방향 일측 단부에 직결되는 차량용 엔진.The pump shaft is directly connected to one end portion in the longitudinal direction of the balance shaft.
  3. 제1항에 있어서,The method of claim 1,
    상기 적어도 하나의 피스톤, 상기 크랭크 샤프트, 상기 적어도 하나의 커넥팅 로드 및 상기 밸런스 샤프트의 장착 공간을 제공하는 실린더 블록, 및A cylinder block providing a mounting space for said at least one piston, said crankshaft, said at least one connecting rod and said balance shaft, and
    상기 실린더 블록을 케이싱하는 엔진커버를 더 포함하는 차량용 엔진.A vehicle engine further comprising an engine cover casing the cylinder block.
  4. 제3항에 있어서,The method of claim 3,
    상기 실린더 블록 및 상기 엔진커버에 형성되는 워터펌프 하우징을 더 구비하고,Further comprising a water pump housing formed in the cylinder block and the engine cover,
    상기 워터펌프는 상기 워터펌프 하우징에 장착되는 차량용 엔진.The water pump is a vehicle engine mounted to the water pump housing.
  5. 제1항에 있어서,The method of claim 1,
    상기 크랭크 샤프트의 길이방향 일측 단부에 장착되는 크랭크 기어, 및A crank gear mounted to one longitudinal end of the crankshaft;
    상기 밸런스 샤프트의 길이방향 일측 단부에 장착되고 상기 크랭크 기어와 외접하는 밸런스 기어를 더 포함하는 차량용 엔진.And a balance gear mounted to one longitudinal end of the balance shaft, the balance gear being external to the crank gear.
PCT/KR2017/002805 2017-03-03 2017-03-15 Engine for vehicle WO2018159889A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20170027488 2017-03-03
KR10-2017-0027488 2017-03-03

Publications (1)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004084552A (en) * 2002-08-27 2004-03-18 Yamaha Motor Co Ltd Component arrangement structure for snowmobile
JP2007100540A (en) * 2005-09-30 2007-04-19 Honda Motor Co Ltd Balancer mechanism of internal combustion engine
JP2010216346A (en) * 2009-03-16 2010-09-30 Daihatsu Motor Co Ltd Balancing device in internal combustion engine
JP2014134124A (en) * 2013-01-09 2014-07-24 Suzuki Motor Corp Balancer device for vehicular engine
JP2016061214A (en) * 2014-09-18 2016-04-25 本田技研工業株式会社 Oil supply structure for water-cooled internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004084552A (en) * 2002-08-27 2004-03-18 Yamaha Motor Co Ltd Component arrangement structure for snowmobile
JP2007100540A (en) * 2005-09-30 2007-04-19 Honda Motor Co Ltd Balancer mechanism of internal combustion engine
JP2010216346A (en) * 2009-03-16 2010-09-30 Daihatsu Motor Co Ltd Balancing device in internal combustion engine
JP2014134124A (en) * 2013-01-09 2014-07-24 Suzuki Motor Corp Balancer device for vehicular engine
JP2016061214A (en) * 2014-09-18 2016-04-25 本田技研工業株式会社 Oil supply structure for water-cooled internal combustion engine

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