CN202674296U - 一种新型的发动机用活塞 - Google Patents

一种新型的发动机用活塞 Download PDF

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Publication number
CN202674296U
CN202674296U CN 201220288075 CN201220288075U CN202674296U CN 202674296 U CN202674296 U CN 202674296U CN 201220288075 CN201220288075 CN 201220288075 CN 201220288075 U CN201220288075 U CN 201220288075U CN 202674296 U CN202674296 U CN 202674296U
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piston
engine
piston pin
pin boss
novel
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CN 201220288075
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温国生
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Chongqing Pangu Power Technology Co ltd
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CHONGQING GOOGOL ENGINE-TECH Co Ltd
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Abstract

本实用新型公开了一种新型的发动机用活塞，包括活塞头，活塞头下方设有活塞销座，活塞销座内设有活塞销孔，其中，活塞销孔内壁设置有由锻铝或青铜材料制成的衬套。本实用新型克服了现有的发动机用活塞的活塞销座刚度低，易导致活塞开裂，影响活塞正常工作，提供一种提高了活塞销座实际承压能力，增强活塞可靠性的一种新型的发动机用活塞。

Description

一种新型的发动机用活塞
技术领域
本实用新型属于发动机活塞领域，具体涉及一种新型的发动机用活塞。 
背景技术
活塞是发动机中的工作的关键零件之一，活塞工作时顶部承受很大的气压力，全部通过活塞销座传给活塞销，再传到连杆，因此，活塞销与活塞销座必须有足够的强度、足够的承压面积和耐磨性，其中活塞销的刚度有着关键意义，如果纵向刚度不足，则引起负荷分布不均匀，使活塞销座疲劳破坏，导致活塞纵向开裂；若横向刚度不足，使活塞销的变形过大，润滑油膜遭受破坏，引起活塞咬住，影响活塞正常工作。 
实用新型内容
本实用新型要解决的技术问题是针对现有的发动机用活塞的活塞销刚度低，易导致活塞开裂，影响活塞正常工作，提供一种提高活塞销实际承载能力，增强活塞可靠性的一种新型的发动机用活塞。 
为了解决上述技术问题，本实用新型提供如下技术方案: 一种新型的发动机用活塞，包括活塞头，活塞头下方设有活塞销座，活塞销座内设有活塞销孔，其中，活塞销孔内壁设置有由锻铝或青铜材料制成的衬套。 
采用本实用新型技术方案的一种新型的发动机用活塞，由于活塞销孔内壁设置有由锻铝或青铜材料制成的衬套，锻铝或青铜材料不仅比铸铝强度高，而且塑性好，当活塞销座局部超过弹性极限时，衬套的微小变形可以降低接触面的应力峰值，因此活塞销座在直径不变的前提下，提高了活塞销的实际承载能力，从而提高了活塞销座的抗开裂能力，增强了活塞的可靠性。 
附图说明
下面结合附图和实施例对本实用新型技术方案进一步说明： 
图1是本实用新型一种新型的发动机用活塞实施例的剖面示意图。
具体实施方式   
如图1所示，本实用新型一种新型的发动机用活塞，包括活塞头1，活塞头1下方设有活塞销座4，活塞销座4内设有活塞销孔3，其中，活塞销孔3内壁设置有由锻铝或青铜材料制成的衬套2。
在具体实施过程中，活塞头1顶部承受气压力，气压力通过活塞销座4传给活塞销，再传到连杆，活塞销座4内的活塞销孔3内壁设有由锻铝或青铜材料制成的衬套2，当气压力通过活塞销座4时，衬套2由于强度高、塑性好，当局部超过弹性极限时，衬套2的微小变形则可以降低接触面的应力峰值，因此提高了活塞销座4的抗开裂能力，保证了活塞的正常工作。 
对于本领域的技术人员来说，在不脱离本实用新型结构的前提下，还可以作出若干变形和改进，这些也应该视为本实用新型的保护范围，这些都不会影响本实用新型实施的效果和专利的实用性。

Claims (1)

1.一种新型的发动机用活塞，包括活塞头，活塞头下方设有活塞销座，活塞销座内设有活塞销孔，其特征在于：活塞销孔内壁设置有由锻铝或青铜材料制成的衬套。
CN 201220288075 2012-06-19 2012-06-19 一种新型的发动机用活塞 Expired - Lifetime CN202674296U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763753A (zh) * 2016-11-14 2017-05-31 无锡市乾泰金属构件厂 一种多形内孔型活塞销
CN106958655A (zh) * 2015-12-11 2017-07-18 现代自动车株式会社 活塞销及制造活塞销的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106958655A (zh) * 2015-12-11 2017-07-18 现代自动车株式会社 活塞销及制造活塞销的方法
CN106763753A (zh) * 2016-11-14 2017-05-31 无锡市乾泰金属构件厂 一种多形内孔型活塞销

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