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What does temperature in combustion engine allow nitrogen to react with oxygen to form pollutants?
In a combustion engine, high temperatures facilitate the reaction between nitrogen and oxygen, leading to the formation of nitrogen oxides (NOx), which are harmful pollutants. The extreme heat generated during combustion provides the energy needed to break the strong bonds in nitrogen molecules, allowing them to react with oxygen. This reaction typically occurs at temperatures above 1,200°C (2,192°F), which are common in engine operations. The resulting NOx contributes to air pollution and can lead to smog and respiratory issues.
What else can I help you with?
State the four main pollutants emitted by an internal combustion engine?
Carbon Monoxide, Nitrogen Monoxide, Hydro Carbons, Nitrogen Dioxide
What are pollutants emitted by an internal combustion engine?
carbon monoxide, due to improper combustion Hydrocarbon and nitrogen oxides Also, if the fuel contains sulfur, oxides of sulfur
Why does nitrogen and oxygen react in a car engine?
Nitrogen and oxygen can react to form oxides of nitrogen. The reaction can occur whenever a combustion reaction takes place in the presence of nitrogen. It could take place in a car engine because it is where fuel combusts and the temperature within engines can be high. The products formed are NO (nitric oxide) and NO2 (nitrogen dioxide) which are of harm to the environment.
What temperature does nitrogen gas burn?
Nitrogen burns to form Nitrogen Dioxide at about 2200F. It is an exothermic reaction, meaning it will produce heat sufficient to sustain itself if the heat is confined, for example in an internal combustion engine.
A fuel contains no nitrogen but nitrogen oxides are produced when it is burned why?
During combustion, the high temperatures cause nitrogen in the air to react with oxygen to form nitrogen oxides. These nitrogen oxides combine with other gases produced during combustion to form pollutants. Nitrogen can be present in the air or in the fuel as impurities, contributing to the formation of nitrogen oxides during combustion.
How nox is produced by engine acceleration?
Nitrogen oxides (NOx) are produced during engine acceleration primarily through the combustion process in internal combustion engines. When the engine accelerates, increased fuel and air mixture leads to higher combustion temperatures, which facilitate the reaction between nitrogen and oxygen present in the air. This high-temperature environment promotes the formation of nitrogen oxides, particularly nitric oxide (NO) and nitrogen dioxide (NO2), as a byproduct of the combustion process. Additionally, factors like engine design and operating conditions can influence NOx emissions during acceleration.
What are the role of combustion engine in nitrogen fixation and atmospheric pollution?
The combustion engine releases a lot of chemicals and smoke into the air. This raises nitrogen in the atmosphere and pollutes the air.
Why is nitrogen dioxide not formed in a car engine?
because of combustion
How is nitrogen produced in a car engine?
Nitrogen is produced in a car engine primarily as a byproduct of the combustion process. During combustion, air is drawn into the engine, which contains about 78% nitrogen. When the fuel burns, the high temperatures can cause some nitrogen to react with oxygen, forming nitrogen oxides (NOx), but most of the nitrogen remains unreacted and is expelled through the exhaust. Thus, while nitrogen itself is not generated in a car engine, it is present in the air used for combustion and released with the exhaust gases.
What type of matter is a car exhaust?
Car exhaust is particulate matter. Other examples of particulate matter are swirls of dust being blown in the wind, and the soot and ashes from a campfire.
If you wanted to make nonpolluting fuel gas how would you do it?
The closest to a non-polluting gas would be hydrogen as the principle combustion product would be water. ANy flammable gas with carbon, sulfur or nitrogen would produce contaminants. The gas would have to be combusted in a low temperature environment like a fuel cell to avoid the formation of nitrogen oxides in the combustion chamber. If a high temperature system (internal combustion engine) is considered the combustion air would have to be nitrogen free - pure oxygen or an inert gas/nitrogen free/oxygen mix
State the two main exhaust gas pollutants generated by a compression ignition diesel engine?
The two main exhaust gas pollutants generated by a compression ignition diesel engine are nitrogen oxides (NOx) and particulate matter (PM). NOx is formed during high-temperature combustion, contributing to smog and acid rain, while particulate matter consists of tiny soot particles that can harm respiratory health and the environment. Additionally, unburned hydrocarbons and carbon monoxide can also be present but are typically considered secondary pollutants in diesel engines.
