EP1065357B1 - Brennkraftmaschine - Google Patents

Brennkraftmaschine Download PDF

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Publication number
EP1065357B1
EP1065357B1 EP20000111189 EP00111189A EP1065357B1 EP 1065357 B1 EP1065357 B1 EP 1065357B1 EP 20000111189 EP20000111189 EP 20000111189 EP 00111189 A EP00111189 A EP 00111189A EP 1065357 B1 EP1065357 B1 EP 1065357B1
Authority
EP
European Patent Office
Prior art keywords
engine
pump
shaft
rotatably supported
balancer
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP20000111189
Other languages
English (en)
French (fr)
Other versions
EP1065357A3 (de
EP1065357A2 (de
Inventor
Akira Yamaguchi
Noriyuki Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of EP1065357A2 publication Critical patent/EP1065357A2/de
Publication of EP1065357A3 publication Critical patent/EP1065357A3/de
Application granted granted Critical
Publication of EP1065357B1 publication Critical patent/EP1065357B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • 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
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation

Definitions

  • the present invention relates to an engine device according to the preamble part of the independent claim 1.
  • An engine device has a structure in which engine auxiliaries, such as an oil pump or water pump are arranged as a unit at the front side of the engine unit and those auxiliaries are driven through timing chains or belts for engine auxiliaries.
  • engine auxiliaries such as an oil pump or water pump
  • the engine auxiliaries such as an oil pump and water pump are incorporated in an engine body as a unit, resulting in increased number of components, complexity of assembly, increased cost or the like. It also tends to increase the number of locations to be sealed, resulting in the occurrence of leakage of oil or water. In addition, waste power is consumed in the bearings to support the load from tension force of timing chains or belts for engine auxiliaries.
  • DE 41 28 432 A discloses a gear drive for a diesel combustion engine wherein the gear drive is arranged on a fly wheel side of the engine and a drive of an injection pump, cool water pump and oil pump has been carried out by different gears of the gear drive.
  • the engine auxiliary is coupled to the balancer shafts so that both the engine auxiliary and the balancer shafts are allowed to rotate together.
  • the engine auxiliary is coupled to the balancer shafts so that both the engine auxiliary and the balancer shafts are allowed to rotate together and the central-shaft-directly-driven-system is employed, it is possible to reduce the load applied on the bearings and to reduce the volume of the bearings.
  • the balancer shafts are rotatably supported on the engine body, an end of the crankshaft is sealed with a sealing member, wherein a shaft of the engine auxiliary is rotatably supported through bearings, and the engine auxiliary and the balancer shafts are coupled to rotate together.
  • the balancer shafts are rotatably supported on the engine body, the auxiliary is rotatably supported on the engine cover, the engine auxiliary and the balancer shafts are coupled to rotate together, and the central-shaft-directly-driven-system is employed, it is possible to reduce the load applied on the bearings and to reduce the volume of the bearings. Further, the positioning of the crankshaft relative to the auxiliary shaft is easily and accurately carried out as the end of the crankshaft is projected out of the engine cover and then sealed.
  • an engaging protrusion of the pump shaft is in engagement with an engaging recess formed on a tip of said balancer shaft and the balancer shaft and the pump shaft are coupled integrally rotatably.
  • crankshaft is supported on bearings in a cylinder block forming the engine body, and a first of the balancer shafts is at one end portion rotatably supported by a needle bearing, whereas the other end portion is supported by a ball bearing.
  • a second of the balancer shafts is at one end portion rotatably supported by a needle bearing, whereas the other end portion is rotatably supported by a ball bearing.
  • an engine room 3 is disposed in front of the front wheels 2
  • an engine 4 is equipped within the engine room 3
  • a radiator 5 is located in the front side of the engine 4.
  • This engine 4 is a 2-cylinder, 4-stroke engine and disposes an oil pan 700 at the bottom of an engine body 6.
  • a crankshaft 7 is disposed within the engine body 6 along the vehicle's width direction, and balancer shafts 8, 9 are disposed in the front and rear side of the crankshaft along the width direction.
  • branch exhaust passages 11, 12 and branch intake passages 13, 14 for each cylinder.
  • the branch exhaust passages 11, 12 are opened and closed by the corresponding exhaust valve 15 disposed in respectively
  • the branch intake passages 13, 14 are opened and closed by the corresponding intake valve 16 disposed in respectively.
  • the exhaust valve 15 and the intake valve 16 are driven by cams 19, 20 disposed on camshafts 17, 18.
  • the branch exhaust passages 11., 12 are collected to a collected exhaust passage 21, which is connected to an exhaust pipe 22.
  • the exhaust pipe 22 connected to each cylinder is collected to a collected exhaust pipe 23, which passes from the front-side of the engine body 6 through the underneath and extends rearward.
  • a catalyst 24 is provided to the exhaust pipe 23.
  • the branch intake passages 13, 14 are collected to a collected intake passage 25, in which a throttle body 26 is provided, wherein the collected intake passage 25 is connected to the cylinder head 10.
  • the throttle body 26 has an intake passage 28 connecting to the intake passage 25 of each cylinder, and furthermore, an intake manifold 30 is connected to the throttle body 26.
  • an injector 35 is disposed on the cylinder head 10.
  • a throttle valve 40 controlling the flow rate of the respective intake passage 28. This throttle valve 40 is controlled in accordance with information of the engine speed and the throttle openings.
  • the crankshaft 7 is rotatably supported on bearings 50a.
  • a balancer shaft 8 is arranged that one end portion 8a is rotatably supported through a needle bearing 51 and another end portion 8b is rotatably supported through a ball bearing 52.
  • a balancer shaft 9 is also arranged in the same manner that one end portion 9a is rotatably supported through a needle bearing 53 and another end portion 9b is rotatably supported through a ball bearing 54.
  • Each of the balancers 8, 9 is inserted from the end portion 8a, 9a of an opening 50b, 50c of the cylinder block 50 and assembled the ball bearing 52, 54 to the opening 50b, 50c.
  • a gear 55 is mounted on the crankshaft 7, while gears 56 and 57 are mounted on the balancer shaft 8 and 9, respectively.
  • the gears 56 and 57 respectively engage the gear 55.
  • the balancer shafts 8 and 9 are interlocked to rotate together through gears 55, 56 and 57.
  • One side of the cylinder block 50 is covered with an engine cover 58, so that the engine cover 58 forms a cam chain chamber 59.
  • a cam gear 60 is disposed on the crankshaft 7, and a cam chain 61 is fitted over between the cam gear 60 and a gear disposed on the camshafts 17, 18 (not shown).
  • the camshafts 17, 18 are interlocked to rotate by rotating of the crankshaft 7 through the cam chain 61, and the exhaust valve 15 and the intake valve 16 are opened and closed with the predetermined timing.
  • An end portion 7a of the crankshaft 7 is protruded from an opening 58a of the engine . cover 58, and a driving pulley 62 is mounted on the protruding end portion 7a with a locking bolt 63. Between a shaft 62a of the driving pulley 62 and the opening 58a is sealed with sealing member 64.
  • a driving belt 66 is fitted over between the driving pulley 62 and a air compressor 65 disposed on the front side of the engine, and a driving belt 68 is fitted over between the driving pulley 62 and an alternator 67 disposed on the rear side of the engine.
  • An oil pump 70 and a water pump 80 are integrally incorporated in the engine cover 58. That is to say, the oil pump 70 is integrally formed so that a pump housing 71 is one part of the engine cover 58, and a pump chamber 73 is formed by assembling the pump housing 71 with a cover housing 72.
  • a pump shaft 75 with blades 74 is rotatably supported between the pump housing 71 and the cover housing 72.
  • An engaging protrusion 75a is formed on a tip of the pump shaft 75.
  • An engaging recess 8c is formed on a tip of the balancer shaft 8 positioned opposite to the pump shaft 75.
  • the engaging protrusion 75a of the pump shaft 75 is engaged with the engaging recess 8c of the balancer shaft 8, and the balancer shaft 8 and the pump shaft 75 are coupled integrally and rotatably. Oil is supplied to each part of the engine 4 by rotation of the pump shaft 75.
  • the water pump 80 is also formed integrally so that a pump housing 81 is one part of the engine cover 58, and a pump chamber 83 is formed by assembling the pump housing 81 with a cover housing 82.
  • a pump shaft 85 with blades 84 is rotatably supported through a ball bearing 86.
  • An engaging protrusion 85a is formed on a tip of the pump shaft 85.
  • An engaging recess 9c is formed on a tip of the balancer shaft 9 positioned opposite to the pump shaft 85.
  • the engaging protrusion 85a of the pump shaft 85 is engaged with the engaging recess 9c of the balancer shaft 9, and the balancer shaft 9 and the pump shaft 85 are coupled integrally and rotatably.
  • the pump housing 81 is protruded into the cam chain chamber 59, and it is configured to be due to the fact be small in size that the pump shaft 85 is sealed in this pump housing 81 with a mechanical sealing member 98 and an oil-sealing member 99.
  • the mechanical sealing member 98 and the oil-sealing member 99 shut out the cooling water and oil, and a weep hole 81 a is formed between the mechanical sealing member 98 and the oil-sealing member 99.
  • a cooling water intake passage 90 is provided, and the cooling water from the radiator 5 is supplied to the pump chamber 83 through the cooling water intake passage 90.
  • the cooling water is supplied from a cooling water discharging passage 91 formed in the cover housing 82 and the engine cover 58 to each part of the engine.
  • a cooling water passage 101 is formed in a cover housing 100 and is communicated with a thermostat 88 disposed in the engine cover 58. Cooling water supplied from the radiator 5 is passed through the thermostat 88 via connection pipe 89 and thereafter supplied to the pump chamber 83 through the cooling water passage 101.
  • thermostat housing 88a as part of the engine cover is formed together with the engine cover, resulting in the reduction of the number of components and the prevention of occurrence of vibration and water leakage which may be produced in case of the thermostat housing and the engine cover being separately formed.
  • the balancer shafts 8, 9 are rotatably supported on the engine body 6, the auxiliary such as the oil pump 70, water pump 80 or the like is rotatably supported on the engine cover 58, the engine auxiliary and the balancer shafts 8, 9 are coupled to rotate together, and the central-shaft-directly-driven-system is employed, it is possible to reduce the load applied on the bearings and to reduce the volume of the bearings.
  • crankshaft relative to the auxiliary shafts is easily and accurately carried out as the end of the crankshaft is projected out of the engine cover and then sealed.
  • auxiliaries such as the oil pump 70 and water pump 80 into the engine cover 58 allows the reduction in the number of auxiliary components to be assembled, as well as the number of locations to be sealed. It is also allowed to reduce the number of components of the oil pump 70 and water pump 80 to be incorporated, to reduce the load applied on the bearings and to reduce in volume of the bearings due to the employment of the central-shaft-directly-driven-system.
  • an engine device having an engine body provided with a crankshaft and balancer shafts adapted to rotate in association with the crankshaft, wherein the engine body is covered with an engine cover, engine auxiliary being an oil pump and/or a water pump is integrally incorporated in the engine cover, wherein the oil pump and/or the water pump are/is integrally formed so that a pump housing is one part of the engine cover, wherein said pump housing forms together with a cover housing a pump chamber, integral incorporation of the auxiliary into the engine cover allows the reduction in the number of auxiliary components to be assembled, as well as the number of locations to be sealed.
  • the engine auxiliary is coupled to the balancer shafts so that both the engine auxiliary and the balancer shafts are allowed to rotate together and the central-shaft-directly-driven-system is employed, it is possible to reduce the load applied on the bearings and to reduce the volume of the bearings.
  • the balancer shafts are rotatably supported on the engine body, the auxiliary is rotatably supported on the engine cover, the engine auxiliary and the balancer shafts are coupled to rotate together, and the central-shaft-directly-driven-system is employed, it is possible to reduce the load applied on the bearings and to reduce the volume of the bearings. Further, the positioning of the crankshaft relative to the auxiliary shafts is easily and accurately carried out as the end of the crankshaft is projected out of the engine cover and then sealed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (6)

  1. Motorvorrichtung, die einen Motorkörper (6) hat, versehen mit einer Kurbelwelle (7) und Ausgleichswellen (8, 9), vorgesehen um in Verbindung mit der Kurbelwelle (7) zu rotieren, wobei der Motorkörper (6) mit einer Motorabdeckung (58) abgedeckt ist und wo eine Motorzubehöreinrichtung (70, 80), die eine Ölpumpe (70) und / oder eine Wasserpumpe (80) ist, einstückig in der Motorabdeckung (58) enthalten ist,
    dadurch gekennzeichnet, dass die Ölpumpe (70) und / oder die Wasserpumpe (80) einstückig gebildet sind, so dass ein Pumpengehäuse (71, 81) ein Teil der Motorabdeckung (58) ist, wobei das Pumpengehäuse (71, 81) zusammen mit einem Abdeckungsgehäuse (72, 82) eine Pumpenkammer (73, 83) bildet.
  2. Motorvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Motorzubehöreinrichtung (70, 80) mit den Ausgleichswellen (8, 9) gekuppelt ist, so dass es sowohl der Motorzubehöreinrichtung (70, 80) als auch den Ausgleichswellen (8, 9) gestattet ist, zusammen zu rotieren.
  3. Motorvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Ausgleichswellen (8, 9) an dem Motorkörper (6) drehbar gelagert sind, ein Ende der Kurbelwelle (7) mit einem Dichtungsteil (64) abgedichtet ist, wobei eine Welle (75, 85) der Motorzubehöreinrichtung (70, 80) durch Lager (86) drehbar gelagert ist und die Motorhilfseinrichtung (70, 80) und die Ausgleichswellen (8, 9) gekuppelt sind, um zusammen zu rotieren.
  4. Motorvorrichtung nach zumindest einem der vorhergehenden Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die ein Eingriffsvorsprung (75a, 85a) der Pumpenwelle (75, 85) in Eingriff ist mit einer Eingriffsaussparung (8c, 9c), gebildet an einer Spitze der Ausgleichswelle (8, 9) und die Ausgleichswelle (8, 9) und die Pumpenwelle (75, 85) integral drehbar gekuppelt sind.
  5. Motorvorrichtung nach zumindest einem der vorhergehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Kurbelwelle (7) in Lagern (50a) in einem Zylinderblock (50) gelagert ist, der den Motorkörper (6) bildet, und dass eine erste (8) der Ausgleichswellen (8, 9) an einem Endabschnitt (8a) durch ein Nadellager (51) drehbar gelagert ist, während der andere Endabschnitt (8b) durch ein Kugellager (52) gelagert ist.
  6. Motorvorrichtung nach zumindest einem der vorhergehenden Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die eine zweite (9) der Ausgleichswellen (8, 9) an einem Endabschnitt (9a) durch ein Nadellager (53) drehbar gelagert ist, während der andere Endabschnitt (9b) durch ein Kugellager (54) drehbar gelagert ist.
EP20000111189 1999-05-24 2000-05-24 Brennkraftmaschine Expired - Lifetime EP1065357B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP14376099 1999-05-24
JP11143760A JP2000337116A (ja) 1999-05-24 1999-05-24 エンジン装置

Publications (3)

Publication Number Publication Date
EP1065357A2 EP1065357A2 (de) 2001-01-03
EP1065357A3 EP1065357A3 (de) 2001-03-28
EP1065357B1 true EP1065357B1 (de) 2004-09-08

Family

ID=15346394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000111189 Expired - Lifetime EP1065357B1 (de) 1999-05-24 2000-05-24 Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP1065357B1 (de)
JP (1) JP2000337116A (de)
DE (1) DE60013504T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026786A1 (de) * 2005-06-10 2006-12-21 Audi Ag Dichtungsanordnung zwischen einem Ausgleichswellenmodul und einer Pumpenwelle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3860983B2 (ja) * 2001-09-25 2006-12-20 株式会社クボタ 水冷エンジン
JP5489598B2 (ja) * 2009-08-25 2014-05-14 ダイハツ工業株式会社 内燃機関におけるバランス装置
AT511074B1 (de) * 2011-06-22 2012-09-15 Avl List Gmbh Brennkraftmaschine mit zumindest einem hin- und hergehenden kolben
CN102518512B (zh) * 2011-12-19 2013-12-18 奇瑞汽车股份有限公司 一种机油泵的传动结构
JP7238691B2 (ja) * 2019-08-23 2023-03-14 マツダ株式会社 エンジンの潤滑及び冷却装置
CN114294070B (zh) * 2021-12-23 2022-09-23 中国北方发动机研究所(天津) 一种机油泵和水泵同轴度可调节的驱动结构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1120803A (en) * 1912-10-17 1914-12-15 Claud H Foster Engine.
US3452610A (en) * 1968-01-17 1969-07-01 Us Army Interchangeable dual gear train assemblies
US4321896A (en) * 1979-12-18 1982-03-30 Cummins Engine Company Gear plate assembly for mounting and positioning an accessory drive train
DE4128432C2 (de) * 1991-08-27 2000-04-27 Deutz Ag Rädertrieb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026786A1 (de) * 2005-06-10 2006-12-21 Audi Ag Dichtungsanordnung zwischen einem Ausgleichswellenmodul und einer Pumpenwelle

Also Published As

Publication number Publication date
JP2000337116A (ja) 2000-12-05
EP1065357A3 (de) 2001-03-28
DE60013504D1 (de) 2004-10-14
EP1065357A2 (de) 2001-01-03
DE60013504T2 (de) 2005-01-20

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