Info about Detonation
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Registered User
Joined: Jul 2003
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From: Toronto, Canada
Info about Detonation
What is detonation?
How do you get it?
How to prevent it?
thanks.. and also what would happen if sugar was in a gas tank.... water in a gas tank?
:thumbup:
How do you get it?
How to prevent it?
thanks.. and also what would happen if sugar was in a gas tank.... water in a gas tank?
:thumbup:
Senior Member
Joined: Jul 2003
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sugar in a gas tank is bad. it'll absorb it and turn to a solid and before that it'll suck it thru your engine and do some nasty shit. Water in the gas tank will cause some problems to, not as many tho. You can get get water remove for your gas tank.
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Joined: Dec 2002
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From: Alabama
Detonation, basically, is a mixture of air and fuel with too little fuel. When it happens, it burns very hot. You get it by having too much air flow and not enough fuel and heavily advanced timing. What it comes down to is air/fuel mixture.
How do you fix it? Get a better fuel setup and tune it on a dyno.
Sugar in tank: You're screwed.
Water in tank: Runs like crap. Dump the tank, fill it up with gas, then disconncect the fuel line from the fuel rail and turn the ignition on several times to clean the water out.
How do you fix it? Get a better fuel setup and tune it on a dyno.
Sugar in tank: You're screwed.
Water in tank: Runs like crap. Dump the tank, fill it up with gas, then disconncect the fuel line from the fuel rail and turn the ignition on several times to clean the water out.
Junior Member
Joined: Aug 2003
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From: Torrance
What is detonation?
Detonation is a abnormal rapid uncontrolled pressure rise that can occur in the engines cylinders during combustion. The knock or pinging sound that is often heard is caused when the normal combustion "flame-front" collides with a rogue spontaneous combustion front that initiates from some other spot in the combustion chamber.
Normal combustion initiates from the spark plug. Once initated the normal combustion propogates smoothly as a flame-front spreads throughout the combustion chamber to burn the air-fuel charge. The cylinders pressure rise is relatively smooth during this process. Spontaneous combustion can occur any time some portion of the air-fuel mixture in front of the normal combustion flame-front is exposed to the right combination of high pressure and temperature. The spontaneous combustion is like an explosion where normal combustion is more like flame spreading when you would burn a piece of paper. The spontaneous combustion front colliding with the normal flame-front causes a pressure rise that hits the cylinder like a hammer. The temperature at the detonation initiation site is also very high and can melt the aluminum pistion locally.
Detonation is caused when the inition timing is too far advanced for the given cylinder pressure. It is also caused when the air/fuel ratio is too lean or if the air/fuel charge in the cylinder is not mixed well leaving rich and lean spots in the combustion chamber.
Nothing is harder on an engine than detonation and the best engine parts can be broken when detonation occurs
Normal combustion initiates from the spark plug. Once initated the normal combustion propogates smoothly as a flame-front spreads throughout the combustion chamber to burn the air-fuel charge. The cylinders pressure rise is relatively smooth during this process. Spontaneous combustion can occur any time some portion of the air-fuel mixture in front of the normal combustion flame-front is exposed to the right combination of high pressure and temperature. The spontaneous combustion is like an explosion where normal combustion is more like flame spreading when you would burn a piece of paper. The spontaneous combustion front colliding with the normal flame-front causes a pressure rise that hits the cylinder like a hammer. The temperature at the detonation initiation site is also very high and can melt the aluminum pistion locally.
Detonation is caused when the inition timing is too far advanced for the given cylinder pressure. It is also caused when the air/fuel ratio is too lean or if the air/fuel charge in the cylinder is not mixed well leaving rich and lean spots in the combustion chamber.
Nothing is harder on an engine than detonation and the best engine parts can be broken when detonation occurs
Insert Title Here
Joined: Sep 2003
Posts: 106
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From: Virginia
Re: What is detonation?
Originally posted by enginjim
Detonation is a abnormal rapid uncontrolled pressure rise that can occur in the engines cylinders during combustion. The knock or pinging sound that is often heard is caused when the normal combustion "flame-front" collides with a rogue spontaneous combustion front that initiates from some other spot in the combustion chamber.
Normal combustion initiates from the spark plug. Once initated the normal combustion propogates smoothly as a flame-front spreads throughout the combustion chamber to burn the air-fuel charge. The cylinders pressure rise is relatively smooth during this process. Spontaneous combustion can occur any time some portion of the air-fuel mixture in front of the normal combustion flame-front is exposed to the right combination of high pressure and temperature. The spontaneous combustion is like an explosion where normal combustion is more like flame spreading when you would burn a piece of paper. The spontaneous combustion front colliding with the normal flame-front causes a pressure rise that hits the cylinder like a hammer. The temperature at the detonation initiation site is also very high and can melt the aluminum pistion locally.
Detonation is caused when the inition timing is too far advanced for the given cylinder pressure. It is also caused when the air/fuel ratio is too lean or if the air/fuel charge in the cylinder is not mixed well leaving rich and lean spots in the combustion chamber.
Nothing is harder on an engine than detonation and the best engine parts can be broken when detonation occurs
Detonation is a abnormal rapid uncontrolled pressure rise that can occur in the engines cylinders during combustion. The knock or pinging sound that is often heard is caused when the normal combustion "flame-front" collides with a rogue spontaneous combustion front that initiates from some other spot in the combustion chamber.
Normal combustion initiates from the spark plug. Once initated the normal combustion propogates smoothly as a flame-front spreads throughout the combustion chamber to burn the air-fuel charge. The cylinders pressure rise is relatively smooth during this process. Spontaneous combustion can occur any time some portion of the air-fuel mixture in front of the normal combustion flame-front is exposed to the right combination of high pressure and temperature. The spontaneous combustion is like an explosion where normal combustion is more like flame spreading when you would burn a piece of paper. The spontaneous combustion front colliding with the normal flame-front causes a pressure rise that hits the cylinder like a hammer. The temperature at the detonation initiation site is also very high and can melt the aluminum pistion locally.
Detonation is caused when the inition timing is too far advanced for the given cylinder pressure. It is also caused when the air/fuel ratio is too lean or if the air/fuel charge in the cylinder is not mixed well leaving rich and lean spots in the combustion chamber.
Nothing is harder on an engine than detonation and the best engine parts can be broken when detonation occurs
