Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion

Discussion Forum : IC Engines and Nuclear Power Plants - Section 1 (Q.No. 14)
14.
The expansion of fuel in a four stroke cycle diesel engine
starts at 15° before top dead centre and ends at 30° after top dead centre
starts at top dead centre and ends at 30° after top dead centre
starts at 15° after top dead centre and ends at 30° before bottom dead centre
may start and end anywhere
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Santosh said:   1 decade ago
Because of expansion starts after the combustion of fuel means after the top dead center.

Rohan said:   1 decade ago
Expansion starts after combustion after tdc.

Roshan Gaykar said:   9 years ago
Generally In diesel engine 13 degree after TDC.

And in petrol 9 degree before TDC.
(1)

Rajan Chaudhary said:   5 years ago
In compression-ignition engine air must be compressed to high temperature as it is compressed the piston reaches to TDC which means high pressure and temperature obtained thus when the fuel enters it takes much time to mix with that air at very high pressure resulted to take more time and crank angle reaches 15° more after the TDC. So that expansion take place at 15° after tdc.

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