凸轮传动机构的活塞式引擎为何没能广泛应用？

林霸赫

yuanaiyang 发表于 2012-11-3 16:39
加工成本应该不会低，组装维修要难些。占用空间大。
- H; r' l4 G# e* t. a第一种：四缸在同一垂直面上，润滑不一致，散热不一致 ...

谢谢！{:soso_e179:}

bob_fang

论坛有高手，看过之后很受启发。

adgjl120

另外这个是高副配合，比曲轴瓦寿命上差多了。

hoverin

设计整车时不好放置，装配时还要转来转去

燕客

2266998 发表于 2012-11-2 17:21
就是生产成本高，没有别的了，车机，最终统一到直列与V机，历史的选择，连水平对置都属于边缘机，尽管效果比 ...

活塞發動機供坦克用, 最新大多是水平對向, 以減低坦克高度

★亮晶晶★

很有创意的结构，不过就如图一的，如果活塞上的凸轮磨损后会不会出现问题。如果是用于压缩机的话不知道效果如何啊。

林霸赫

★亮晶晶★ 发表于 2012-11-4 14:40
很有创意的结构，不过就如图一的，如果活塞上的凸轮磨损后会不会出现问题。如果是用于压缩机的话不知道效果 ...

+ p, j+ y( {' P1 D; M" K6 i# P谢谢！这种凸轮驱动机构在压缩机、液压泵等行业应用较热机行业多。{:soso_e100:}

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Left: The Fairchild-Caminez Cam Engine: 1926.

The Fairchild-Caminez 447 engine was a four-cylinder air-cooled radialintended for aircraft useage. It was designed by Harold Caminez, who had previouslyworked in the Engine Design Section of the US Army Air Service. The pistonsacted on a leminiscate-shape cam, which made only one revolution for every twopiston cycles, so for the same number of power impulses the engine ran at halfspeed. The pistons were connected by steel links to keep them pressed againstthe cam; the cylinder were steel with aluminium heads.
* G4 R& _8 U' y$ t4 WThe Fairchild-Caminez 447 was first flown in an Avro 504 from Farmdale, LongIsland, New York, in 1926. It was successfully endurance-tested in 1927, andwas the first ever axial engine to receive a US Dept of commerce typecertificate.

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林霸赫

付明花 发表于 2012-11-2 23:18
' ?( t/ @3 ?- |* n7 s二战时飞机发动机是这样的吗？

9 M$ Z  r' J1 Y5 E! y) Z3 g谢谢！ 二战时飞机的发动机多是星型的{:soso_e100:}

xmlgpho

机加跟装配的话，有点难度

林霸赫

xmlgpho 发表于 2012-11-4 20:49
. U0 _4 |" Y% Y机加跟装配的话，有点难度

3 t* f) E8 O- G, p% p- `0 Y! D谢谢关注！{:soso_e179:}