What are Anti knocking agent in fuel?

Knocking in gas engines is when the fuel-air mixture in the cylinder self-ignites due to compression instead of waiting on the spark plug spark to ignite it. Anti-knocking agents are substances that let's the fuel-air mixture in the cylinder be compressed more w/o self-igniting.

I get knocking & ping noise coming from the fuel injectors

'Knocking' is a technical term for fuel igniting too early in the combustion chamber. It can be resolved by adding anti knock additives to the fuel or by retarding the timing at the relevant revs. Most modern engines have built in knock sensors that do this automatically.

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what is microbial agent, what is the advantages

Try a higher octane fuel

In the very beginning of the internal combustion engine, unleaded fuel was used. Unleaded fuel was used way before lead was later added to fuel as an anti-knock agent. In 1975, this all changed, as lead was slowly removed from all fuel.

An anti-inflammatory is an agent which prevents or counteracts inflammation.

An oxidizing agent supplies oxygen, and a fuel consumes oxygen.

It is used as an anti-caking agent in powdered sugar and a thickening agent in soups.

It is a fine chemical powder which will absorb moisture and clump. The anti-caking agent helps prevent this.

they are the same thing. "knocking" in an engine is the fuel igniting from the heat of compression of the fuel and the air together. in a desel engine this is how it is suposed to work because it has no spark plugs so the only way to ingite the fuel is by compressing the fuel and the air by a ratio of about 22 to 1. in a gas engine the fuel is ignitied…

Bad fuel pump, loose fuel pump, loose baffle or foreign matter in the tank.

Adjust timing and/or quality of fuel

The van has an anti siphon devise in the fuel filler neck. The van has an anti siphon devise in the fuel filler neck.