Gasoline powered vehicles

Why are you asking a chemical question in a newsgroup about electronics?

At least you caught yourself before posting the second homework question.

Michael

Complete combustion results in CO2+H2O but then again nothing is perfect.

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CDD- Yes this is the wrong place for this Question But as for the above answer complete combustion of a hydrocarbon does not give H2O as an end product more like if motor is running rich -high carbonmonoxide-CO output-- proper fuel mixture means an increase in CO2 output -octane is not gasoline it is an aditive used to stop preignition. without it your engine would try to diesel when hot or when a high compression engine is used.Although this doesn't answer your question I have trouble understanding what it is you want to know. did you need to know the exact chemical/thermal and explosive reaction of an internal combution engine or ???????????????????????

Why would you assume that gasoline is octane ?

Nope. Octane is a hydrocarbon, C6H18. It exists in several isomers, one of which 2,2,4 trimethylpentane, is the reference standard for rating gasolines for knock resistance. To rate a batch of gasoline, a test engine was run on various mixtures of 2,2,4 TMP and heptane until it knocked as much as on the fuel under test. The percentage of octane in that mixture was the rating. Maybe you're confusing octane with the tetraethyl lead that was once used to boost the octane rating of gasolines.

Perfect combustion of any pure hydrocarbon gives carbon dioxide and water. The problem is that, in an engine, the fuel doesn't have time to burn completely. There is also the problem of nitrogen oxides. The way you reduce the oxidation of nitrogen in the engine is to lower flame temperatures with exhaust-gas recirculation, but that makes the incomplete combustion problem worse. The patch for that was the catalytic converter, which burns up the unburned gasoline in the exhaust system.

octane is C8H18 and is usable as gasoline. pure octane has an octane rating of 100. typical gasoline is a blend of hydrocarbons

high compression engines typically stop dieseling by cutting off the fuel suply

Bye. Jasen

Havn't found one of those on my twin 650 holleys-sorry (yes I do now what you mean- solinoid on the primary circuit of carb)

correct me if wrong but I thought the byprodicts of a running endine were

Carbon Monoxide CO In complete chemical combination of carbon from fuel and atmosperic oxygen.

Carbon dioxide CO2 Chemical combination of carbon from fuel and oxygen.

hydro carbons HC unburnt fuel

water H2O Chemical combination of hydrogen from fuel and atmospheric oxygen

Oxides of nitrogen NOx* Chemical combination of atmospheric nitrogen and oxygen at high temperates.

nitrogen N2 Atmospheric nitrogen which has not reated chemically with other products

Sometimes Lead PB lead particles from fuel anti-knock additives

well as far as I can remember it goes something like this-If not please enlighten me?

thank's cdd