Mechanical Engineering - IC Engines and Nuclear Power Plants - Discussion

Discussion Forum : IC Engines and Nuclear Power Plants - Section 1 (Q.No. 13)
13.
Pre-ignition is caused by the spontantaneous combustion of the mixture before the end of the compression stroke, and is due to
cylinder walls being too hot
overheated spark plug points
red hot carbon deposits on cylinder walls
any one of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

PRASANTH KUMAR P said:   1 decade ago
At certain times after combustion the unburned fuel particles get settled over the cylinder walls. Due to higher combustion temperature these particles burns spontaneously before normal combustion occurs. These regions are called Hotspots.
(1)

Shrihari said:   9 years ago
Yes. All options are right.

Preignition occurs when spark plug got overheated, it ignites the charge in between compression stroke & power stroke.

As earlier says that whenever cylinder surface getting hot it also ignite the charge before ignition.
(2)

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