Answer / guest

Low grade fuel means more impurity in the fuel like presence
of lead and sulphur. This could cause early deposition of
sludge,increase viscosity of the sump oil (which reduces
mobility between reciprocating parts ie connecting shaft of
the piston and the main shaft),lower performance like
slowing down of acceleration,decreased mileage(this happens
because the engine automatically compensates for usage of
low quality fuel by consuming more fuel),causes detonation
in engines.
Detonation (generally caused by fuel with a low octane
rating) is the tendency for the fuel to pre-ignite or auto-
ignite in an engine's combustion chamber. This early (before
the spark plug fires) ignition of fuel creates a shock wave
throughout the cylinder as the burning and expanding fuel
air mixture collides with the piston that is still traveling
towards top-dead-center. The resulting knock/ping is the
sound of the pistons slamming against the cylinder walls.
Severe detonation can break pistons and destroy engines.

Where can you find the feed check valve and feed stop valve and give the purpose of it?

1 Answers   RRB,

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Hi, please share APGenco Assistant Engineer (Mechanical) model question papers.

8 Answers   APGenco, DBS, Essar, KTPS, L&T, Tikona,

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Can contractor purchase as cst purcbase who is registerd under wct act in mp

0 Answers   KL Engineering,

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arrange the efficiency of the engine in decreasing order OTTO, DIESE& DUEL ?

2 Answers   Infosys,

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what is difference between 1ton to 1HP

2 Answers  

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What is the relationship between hardness and tensile strength?

0 Answers  

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what is supercharging?

7 Answers   BEL,

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• Would you be willing to relocate if required?

1 Answers   Petro Star Mount,

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hi every one, i want to make a coal grinder to mil 3 or 4 tons of coal dust per hour . if you guys help me with photos or some tecnical drawings that would be very kind of you.

0 Answers  

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Explain how the lubricating oil circulates in a diesel engine.

0 Answers  

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On 22nd December, which of the following places has the largest day and shortest night ?

3 Answers   RRB,

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Pls tell me the diff bw impulse turbine and reaction turbine

0 Answers   Essar,

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