CN112594055A - 一种发动机排气再做功的方法 - Google Patents

一种发动机排气再做功的方法 Download PDF

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CN112594055A
CN112594055A CN202110031386.2A CN202110031386A CN112594055A CN 112594055 A CN112594055 A CN 112594055A CN 202110031386 A CN202110031386 A CN 202110031386A CN 112594055 A CN112594055 A CN 112594055A
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engine
pneumatic assembly
secondary pneumatic
exhaust
waste gas
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迟龙
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    • 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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/06—Engines with prolonged expansion in compound cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

目前的四冲程发动机在做功后将高温高压的废气排出，使得一部分能量没有被利用，尤其在重负荷时，排出的高温高压废气所损失的能量更多。本发明是一种利用废气驱动的次级气动组件与发动机曲轴连接，使得废气在排出时驱动次级气动组件，从而使发动机排气冲程再次做功，其原理是，排气做功时缸体与次级气动组件腔体的总容积是一个变大的过程，从而实现排气再做功。其等效于间接的增加了做功行程，还可多级梯度做功，加装沸腾装置，提高发动机的效率和性能。

Description

一种发动机排气再做功的方法
技术领域
本发明涉及四冲程发动机在排气冲程能够再次做功的方法。
背景技术
目前的四冲程发动机在做功后将高温高压的废气排出，使得一部分能量没有被利用，尤其在重负荷时，排出的高温高压废气所损失的能量更多。本发明是一种利用废气驱动的次级气动组件与发动机曲轴连接，使得废气在排出时进入次级气动组件，从而使发动机排气冲程再次做功，提高了发动机效率。
发明内容
本发明是一种利用废气驱动的次级气动组件与发动机曲轴连接，使得废气在排出时驱动次级气动组件，使发动机排气冲程再次做功。其原理是，排气冲程时发动机缸体容积变小的速率小于次级气动组件容积变大的速率，排气做功时发动机缸体与次级气动组件的总容积是一个变大的过程，从而实现排气再做功。其等效于间接的增加了做功行程。可以多级增加气动组件，可加装逆止阀和泄压阀来提高可靠性，可加装外部气源连接组件来及加装沸腾装置，提高性能。
附图说明
图1为原理示意图，图1中1发动机缸体，2次级气动组件，3排气管道。图2为功能介绍图，图2中1马达，2传动机构，3连接管道，4次级排气管道。
具体实施方式
如图1所示，次级气动组件2容积大于发动机缸体1，在发动机排气冲程时，活塞上行，次级气动组件2中的活塞下行，废气通过排气管道3进入次级气动组件2，发动机缸体1容积变小的速率小于次级气动组件2容积变大的速率，此时的运动是总容积变大的过程，所以发动机所排出的废气可以继续做功。此种方法等效于发动机缸体行程间接的增大。
如图2所示，发动机通过传动机构2与马达1连接，设计时应保证发动机排气冲程状态下要使得总容积是一个变大的过程。连接管道3中可以加装外部气源连接组件和泄压装置还有逆止阀，比如废气加热使水沸腾，高压水蒸气打入连接管道3，泄压阀和逆止阀可以提高整体的可靠性。次级排气管道4可以用来连接下一个废气驱动设备，从而实现废气梯度利用。
如图1所示本发明可以设计成为与曲轴同轴的次级缸体。如图2所示也可设计成不同轴的气动组件通过传动机构2相匹配。

Claims (4)

1.一种发动机排气再做功的方法，其原理是：发动机曲轴与次级气动组件相连接，发动机排出的废气通向次级气动组件，排气冲程时发动机缸体容积变小的速率小于次级气动组件容积变大的速率，此时总容积是一个变大的过程。
2.根据权利要求1中所述，发动机可通过传动部件与次级气动组件相匹配。
3.据权利要求1中所述，在发动机与次级气动组件的废气连接管道中，可加装逆止阀和泄压阀来提高可靠性，可加装外部气源连接组件来提高性能。
4.根据权利要求1中所述，在次级气动组件完成做功后，可在次级气动组件排气端加装相匹配的气动组件来实现多级梯度做功，也可加装沸腾装置，将蒸汽打回连接管道中继续做功。
CN202110031386.2A 2021-01-11 2021-01-11 一种发动机排气再做功的方法 Withdrawn CN112594055A (zh)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999006682A2 (en) * 1997-07-31 1999-02-11 Otto Israel Krauss Supercharged internal combustion compound engine
US6393841B1 (en) * 2001-06-28 2002-05-28 Norman Robert Van Husen Internal combustion engine with dual exhaust expansion cylinders
US20040255882A1 (en) * 2003-06-20 2004-12-23 Branyon David P. Split-cycle four-stroke engine
CN101418716A (zh) * 2007-10-23 2009-04-29 赵元藩 高效集成式热机
CN101560911A (zh) * 2008-04-16 2009-10-21 罗嘉文 节能环保内燃蒸汽发动机
CN201714483U (zh) * 2010-06-25 2011-01-19 冯政杰 一种节能环保发动机
CN103244259A (zh) * 2013-05-29 2013-08-14 长城汽车股份有限公司 连通缸四冲程发动机及相应的汽车
CN103452589A (zh) * 2013-08-22 2013-12-18 安徽农业大学 一种用于两级式空气动力发动机的配气机构
US20140261325A1 (en) * 2013-03-15 2014-09-18 Scuderi Group, Inc. Split-cycle engines with direct injection
CN106089409A (zh) * 2016-06-15 2016-11-09 徐小山 一种活塞往复式发动机

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999006682A2 (en) * 1997-07-31 1999-02-11 Otto Israel Krauss Supercharged internal combustion compound engine
US6393841B1 (en) * 2001-06-28 2002-05-28 Norman Robert Van Husen Internal combustion engine with dual exhaust expansion cylinders
US20040255882A1 (en) * 2003-06-20 2004-12-23 Branyon David P. Split-cycle four-stroke engine
CN1809691A (zh) * 2003-06-20 2006-07-26 史古德利集团有限责任公司 分开式循环四冲程发动机
CN101418716A (zh) * 2007-10-23 2009-04-29 赵元藩 高效集成式热机
CN101560911A (zh) * 2008-04-16 2009-10-21 罗嘉文 节能环保内燃蒸汽发动机
CN201714483U (zh) * 2010-06-25 2011-01-19 冯政杰 一种节能环保发动机
US20140261325A1 (en) * 2013-03-15 2014-09-18 Scuderi Group, Inc. Split-cycle engines with direct injection
CN103244259A (zh) * 2013-05-29 2013-08-14 长城汽车股份有限公司 连通缸四冲程发动机及相应的汽车
CN103452589A (zh) * 2013-08-22 2013-12-18 安徽农业大学 一种用于两级式空气动力发动机的配气机构
CN106089409A (zh) * 2016-06-15 2016-11-09 徐小山 一种活塞往复式发动机

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