CN105937417A - 一种柴油机凸轮轴结构 - Google Patents

一种柴油机凸轮轴结构 Download PDF

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Publication number
CN105937417A
CN105937417A CN201610488090.2A CN201610488090A CN105937417A CN 105937417 A CN105937417 A CN 105937417A CN 201610488090 A CN201610488090 A CN 201610488090A CN 105937417 A CN105937417 A CN 105937417A
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Prior art keywords
camshaft
cam
timing gear
diesel engine
oil pump
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CN201610488090.2A
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CN105937417B (zh
Inventor
何林
王波
王兴军
郭秀娟
崔会山
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SHANDONG AGRICULTURAL SCIENCE EQUIPMENT CO Ltd
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SHANDONG AGRICULTURAL SCIENCE EQUIPMENT CO Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102Mechanical drive, e.g. tappets or cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02Valve drive
    • F01L1/04Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047Camshafts
    • F01L2001/0476Camshaft bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

本发明属机械领域,本发明的目的是提供种新型柴油机凸轮轴结构,可在不影响发动机轮系结构的前提下,能承受较高的泵端压力并能保证凸轮轴、油泵凸轮的可靠性。它的设计技术方案是:凸轮轴包括油泵凸轮、凸轮轴正时齿轮支承轴部分、进气凸轮、排气凸轮部分,将油泵凸轮、凸轮轴做成一体,油泵凸轮、凸轮轴正时齿轮支承轴、凸轮轴安装轴承支承轴部分的直径依次减小,凸轮轴正时齿轮、轴承须从凸轮轴B端(机体飞轮侧)依次装在凸轮轴,凸轮轴支承端通过齿轮盖盖、机体支承,通过必要的定位方式完成轴向定位,完成凸轮轴功能。

Description

一种柴油机凸轮轴结构
技术领域
本发明涉及一种柴油机凸轮轴结构发明专利结构,属机械领域。
背景技术
凸轮轴作为发动机运转是一个不可缺少的零件,是发动机正常工作的保证,为获得较好的燃油经济性及排放指标,随着电控泵在小型柴油机上的应用,发动机油泵的泵端压高压逐渐提高,对发机机的凸轮轴刚度新的要求。目前,国内的单缸大缸径的柴油机油泵凸轮同凸轮轴一体制作,受发动机的传动轮系结构影响,凸轮轴油泵端直接安装在机体上,其支承面较宽,导致柴油机机体宽,比质量参数较大,装配顺序为凸轮轴正时齿轮从凸轮轴A端通过其内孔装配在凸轮轴上,并采取适当的定位方式;要么小型柴油机的油泵凸轮与与凸轮轴分体制作,凸轮轴正时齿轮从凸轮轴A端通过其内孔装配在凸轮轴上,油泵凸轮也从凸轮轴A端装配在凸轮轴上,安装用键等其它方式固定,凸轮轴油泵端通过轴承安装在机体上,其支承面较窄,同时柴油机机体宽受发动机的传动轮系结构影响,凸轮轴的直径不易过大,但随喷油泵泵端压力的提高,其喷油泵凸轮须用较小的基圆以便喷油泵配套,但小的喷油泵基圆与凸轮轴联接,其喷油泵的泵端压力影响凸轮轴的可靠性,引起键、凸轮轴或喷油泵凸轮的变形,影响发动机的性能或直接引起发动机无法工作,故急需一种新型的小型柴油机凸轮轴结构发明专利结构,能在不影响发动机轮系结构的情况下,能承受较高的泵端压力并能保证凸轮轴、油泵凸轮等的可靠性。
因此设计一种柴油机凸轮轴结构发明专利结构,是十分必要的。
发明内容
本发明的目的是提供种新型柴油机凸轮轴结构,可在不影响发动机轮系结构的前提下,将油泵凸轮、凸轮轴做成一体,能承受较高的泵端压力并能保证凸轮轴、油泵凸轮的可靠性。
技术方案是:凸轮轴(2)包括油泵凸轮(3)、凸轮轴正时齿轮支承轴部分(5)、进气凸轮(8)、排气凸轮(9)部分,凸轮轴正时齿轮(5)、轴承(6)从凸轮轴B端依次装在凸轮轴(2),凸轮轴支承端通过齿轮室盖(1)、机体(2)支承,通过必要的定位方式完成轴向定位,完成凸轮轴功能。
本发明是一种新的柴油机凸轮轴结构,在小型单缸柴油机上将油泵凸轮、凸轮轴做成一体,能够能在不影响发动机轮系结构的情况下,能承受较高的泵端压力并能保证凸轮轴、油泵凸轮等的可靠性。
附图说明
图1是柴油机凸轮轴的结构示意图;
图1中:1、齿轮室盖,2、机体,3、油泵凸轮,4、凸轮轴正时齿轮,5、凸轮轴正时齿轮支承轴部分,6、轴承,7、机体,8、进气凸轮,9、排气凸轮。
具体实施方式
附图1中,凸轮轴(2)包括油泵凸轮(3)、凸轮轴正时齿轮支承轴部分(5)、进气凸轮(8)、排气凸轮(9)部分,凸轮轴正时齿轮(4)、轴承(6)须从凸轮轴B端依次装在凸轮轴(2),凸轮轴支承端通过齿轮室盖(1)、机体(2)支承,通过必要的定位方式完成轴向定位,供发动机工作使用,完成凸轮轴功能。
本发明是能在不影响发动机轮系结构的情况下,将油泵凸轮、凸轮轴正时齿轮支承轴、凸轮轴安装轴承支承轴部分的直径依次减小,油泵凸轮、凸轮轴做成一体,装配为凸轮轴正时齿轮、轴承从凸轮轴B端依次装在凸轮轴上,使之能承受较高的泵端压力并能保证凸轮轴、油泵凸轮等的可靠性。

Claims (2)

1.一种柴油机凸轮轴结构发明专利,它主要齿轮室盖(1)、凸轮轴(2)、油泵凸轮(3)、凸轮轴正时齿轮(4)、凸轮轴正时齿轮支承轴部分(5)、轴承(6)、机体(7)、进气凸轮(8)、排气凸轮(9)组成。
2.如权利要求1所述要求, 凸轮轴(2)包括油泵凸轮(3)、凸轮轴正时齿轮支承轴部分(5)、进气凸轮(8)、排气凸轮(9),将油泵凸轮(3)、凸轮轴正时齿轮支承轴(5)、凸轮轴安装轴承支承轴部分的直径依次减小,凸轮轴正时齿轮(4)、轴承(6)须从凸轮轴B端依次装在凸轮轴(2),完成凸轮轴功能。
CN201610488090.2A 2016-06-29 2016-06-29 一种柴油机凸轮轴结构 Expired - Fee Related CN105937417B (zh)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10176508A (ja) * 1996-12-19 1998-06-30 Toyota Motor Corp 内燃機関の動弁装置
WO2008029240A1 (en) * 2006-08-29 2008-03-13 Toyota Jidosha Kabushiki Kaisha Engine system
CN201236730Y (zh) * 2007-06-07 2009-05-13 江苏江淮动力股份有限公司 一种防反转着火的单缸柴油机
CN201810359U (zh) * 2010-10-21 2011-04-27 常州市海润机电有限公司 风冷涡流室式柴油机的凸轮轴
CN103590868A (zh) * 2013-10-22 2014-02-19 长安大学 四冲程单缸柴油机用凸轮轴改装为六冲程用凸轮轴的方法
CN203783664U (zh) * 2013-12-11 2014-08-20 重庆全润动力机械有限公司 一种柴油机用凸轮轴
CN204755008U (zh) * 2015-07-01 2015-11-11 金坛鑫田柴油机有限公司 一种缸径为98毫米的风冷柴油机专用凸轮轴及其支撑结构
CN206246162U (zh) * 2016-06-29 2017-06-13 山东常林农业装备股份有限公司 一种柴油机凸轮轴结构

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10176508A (ja) * 1996-12-19 1998-06-30 Toyota Motor Corp 内燃機関の動弁装置
WO2008029240A1 (en) * 2006-08-29 2008-03-13 Toyota Jidosha Kabushiki Kaisha Engine system
CN201236730Y (zh) * 2007-06-07 2009-05-13 江苏江淮动力股份有限公司 一种防反转着火的单缸柴油机
CN201810359U (zh) * 2010-10-21 2011-04-27 常州市海润机电有限公司 风冷涡流室式柴油机的凸轮轴
CN103590868A (zh) * 2013-10-22 2014-02-19 长安大学 四冲程单缸柴油机用凸轮轴改装为六冲程用凸轮轴的方法
CN203783664U (zh) * 2013-12-11 2014-08-20 重庆全润动力机械有限公司 一种柴油机用凸轮轴
CN204755008U (zh) * 2015-07-01 2015-11-11 金坛鑫田柴油机有限公司 一种缸径为98毫米的风冷柴油机专用凸轮轴及其支撑结构
CN206246162U (zh) * 2016-06-29 2017-06-13 山东常林农业装备股份有限公司 一种柴油机凸轮轴结构

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