TDC AND BDC OF RECIPROCATING COMPRESSOR

TDC AND BDC OF RECIPROCATING COMPRESSOR
TDC AND BDC OF RECIPROCATING COMPRESSOR

 TDC AND BDC OF RECIPROCATING COMPRESSOR

TDC AND BDC is the important position of reciprocating engine or compressor, the clearance between TDC and top cover end, BDC and frame end must be adjusted with in limit for smooth operation of compressor.

RECIPROCATING COMPRESSOR -It has a piston and cylinder mechanism with automatic spring controlled inlet and exhaust valves. Delivery is usually to a receiver. The receiver is effectively a store of energy used to drive compressed air tools. The main advantages of reciprocating compressor are that it can achieve high pressure ratio.

TDC- Also called top dead center, it is top most position of piston in to the cylinder or we can say that the maximum distance covered by piston called TDC of reciprocating compressor.

Piston bumping clearance (clearance between TDC and outer end) should be maintained 2 mm.

BDC- This is also called bottom dead center , it is the bottom last position of piston in to the cylinder called BDC of reciprocating compressor.

Piston bumping clearance (clearance between BDC and frame end) should be maintained 1mm.

SWEPT VOLUME – It is the space between TDC and BDC and also called space covered by piston in to cylinder during operation called swept volume, it is measured in cubic inch or cubic centimetre.

FAD- it is called free air delivery and it measure the capacity of a compressor in term of the air flow it can handle. It is normally measured at standard see level (SSL).

 

In order to be practical there is a clearance between the piston crown and top of cylinder and also piston bottom and cylinder bottom. Clearances are providing in compressor to absorb shock which will otherwise occur due to piston striking the cylinder head.

 The air compressed to small clearance volume will expand to a large volume during suction stroke and thus reduce the intake of fresh air. This decreases the volumetric efficiency of the reciprocating compressor. For this reason clearance volume is kept as small as possible.

 

Assembly of head of four stroke engine explain the precaution that must be taken while assembly of head of engine and setting of tappet know more - click here

 

To know why we use temperature sensor in compressor outlet - click here 

2 thoughts on “TDC AND BDC OF RECIPROCATING COMPRESSOR”

  1. My wife and i were really relieved when Albert could conclude his web research via the precious recommendations he had through the weblog. It’s not at all simplistic just to choose to be giving for free guidelines which usually many people might have been making money from. We really see we now have the website owner to be grateful to for this. The entire explanations you made, the easy blog navigation, the relationships you can aid to promote – it’s all spectacular, and it’s really making our son in addition to the family imagine that the article is enjoyable, and that is extraordinarily fundamental. Many thanks for all!

  2. I wanted to put you a little note to say thank you over again for your personal lovely guidelines you’ve contributed in this case. This is certainly generous of you to convey unreservedly precisely what a lot of people could possibly have sold for an e book to help with making some dough for themselves, certainly given that you might well have tried it in the event you wanted. Those advice in addition served like a fantastic way to be certain that some people have the identical passion like my personal own to see a little more regarding this issue. I’m sure there are numerous more pleasurable moments in the future for folks who examine your blog.

Leave a Reply

Your email address will not be published. Required fields are marked *