what is a four stroke engine?

Answer Posted / balaji.k.y

in an four stroke engine for 2 rotations of the crankshaft
one power stroke is obtained...that is 1)suction (1st half
rotation-TDC to BDC) 2)compression (2nd half rotation-BDC to
TDC) 3)POWER STROKE (3rd half rotation-TDC to BDC) and 4)
exhaust stroke (4th half rotation-BDC to TDC)

in case of 2 stroke engine....for every rotation of the
crank shaft one power stroke is obtained...during the travel
of piston from BDC to TDC-compression + suction into the
crank case takes place..during the travel from TDC to
BDC-power + transfer of air into cylinder causes exhaust of
burnt gases

Is This Answer Correct ?    6 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

how to minibar working

930


I got i20 for university of bridgeport,university of new heaven and eastern michigan university.Please tell me visa success rate for these universities.And I want to go to Connecticut.At that place two universities are avaliable one is new heaven and the another one is bridgeport.Which is the best? Please give reply as early as possible.

1901


I need BHEL Engineer Trainee written test papers in Mechanical stream.

1831


Wasco Interview 1-the type of transducer that convert mechanical movement into a voltage 2-pump 2500 psi and 100 MG select it 3-modes of heat transfer 4-the difference bet PSIA and PSIG 5-the function of relief valve and no return valve (check valve ) 6-types of bearing general catogires 7-function of bearing 8-compressor surge 9-pump cavitation 10-define critical speed 11-compression ratio decease volumetric ratio ........... 12-using inter-cooling in multi stage compressors to ....... 13-using cascade system in refrigerator function ? 14-define performance and efficiency .

1633


pl. send me jr.engg.model question for rrb malda.

1633






diffuser increases pressure but in turbine pressure is decreasing when steam passing through casing?

2969


what is the techanical difference between german standard & japanese standard.

1608


why have u choose this ME-engg design department

1656


What does afbc stand for?

633


Crankcase oil mist detector

1537


What will be the cause of high temperature in one cylinder of D/E?

1447


What is the temperature at which diesel normally boils?

677


Have you been a team leader in your previous or present job and what are the challenges of associated with team leadership?

6074


what is varible

1692


For a high pressure/ high temperature multistage pump (Boiler Feed Water Pump), what is the average life of mechanical seal? Does life of DE and NDE differ, if differ, how much? Why?

1561