Chemistry of combustion in IC engines

Jayakumar-J asked in a PM:
sir what is the chemical reaction take place during the burning of air fuel mixture an the IC engine.
Since this may be of general interest I am posting my reply here:
Normally all that should happen is that the hydrocarbon should burn with the Oxygen in air and water and carbon dioxide alone should be produced. However, extremely short times, high pressures, high temperatures and presence of other additives lead to various emissions, mostly harmful.
<a href="https://www.autoshop101.com/forms/h55.pdf" target="_blank" rel="nofollow noopener noreferrer">PDF</a>

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  • Jayakumar.j
    Jayakumar.j

    @jayakumarj-3JOeUc • Jul 30, 2012

    Thank you sir for your valuable reply sir .
    sir,
    Sometime why the exhaust gases are have black color ?

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  • Ramani Aswath
    Ramani Aswath

    @ramani-VR4O43 • Jul 30, 2012

    The black colour is from very fine soot particles, which are produced during incomplete combustion of carbonaceous fuels. These nano sized particles can do a lot of damage to lung tissues.

    0
  • Jayakumar.j
    Jayakumar.j

    @jayakumarj-3JOeUc • Jul 30, 2012

    what are the modifications are made in vehicle for pollution control ?

    0
  • Ramani Aswath
    Ramani Aswath

    @ramani-VR4O43 • Jul 30, 2012

    <a href="https://www.scribd.com/doc/29852493/Emission-Control-on-IC-engine" target="_blank" rel="nofollow noopener noreferrer">Emission Control On IC Engine | PDF | Exhaust Gas | Combustion</a>
    <a href="https://www.dir.ca.gov/title8/5146.html" target="_blank" rel="nofollow noopener noreferrer">California Code of Regulations, Title 8, Section 5146. Internal Combustion Engine Exhaust Emission Control.</a>

    0
  • zaveri
    zaveri

    @zaveri-5TD6Sk • Jul 31, 2012

    Jayakumar.jwhat are the modifications are made in vehicle for pollution control ?

    Nowadays all modern vehicles are use catalytic converters to reduce the emission of nitrous oxides to the atmosphere.

    0
  • Jayakumar.j
    Jayakumar.j

    @jayakumarj-3JOeUc • Jul 31, 2012

    sir,
    its possible to produce thermal energy by using the waste engine cooling oil with water

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  • Ramani Aswath
    Ramani Aswath

    @ramani-VR4O43 • Jul 31, 2012

    I have to join with Chandra Babu, and declare total mystification.


    If you want to know if the oil used for engine cooling but contaminated with water can be used to generate heat, probably it can be burnt in an external combustion process and generate heat.

    0
  • Jayakumar.j
    Jayakumar.j

    @jayakumarj-3JOeUc • Aug 1, 2012

    sir,
    what are the test are conducted on AUTOMOTIVE RESEARCH ASSOCIATION OF INDIA(ARAI)

    0
  • Ramani Aswath
    Ramani Aswath

    @ramani-VR4O43 • Aug 1, 2012

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    Why dont you visit their site explore and contact them for more info about whatever interests you in their activities?

    0
  • graphite
    graphite

    @graphite-tkk1sC • Aug 1, 2012

    sir ,
    what is mean by exhaust gas analysis?,what is the use of exhaust gas analysis?

    0
  • mechky
    mechky

    @mechky-jbqpJD • Aug 1, 2012

    Jayakumar.jsir ,
    what is mean by exhaust gas analysis?,what is the use of exhaust gas analysis?

    Exhaust Gas Analysis is used to measure the amount of exhaust gas components present in a stream of exhaust gas. Analyzers test five gases - hydrocarbons, carbon monoxide, carbon dioxide, oxygen and oxides of nitrogen.
    It is used for:
    - Troubleshooting fuel and ignition systems
    - Locating vacuum leaks or EGR malfunctions
    - Diagnosing mechanical problems such as worn valves and guides
    - Checking air/fuel mixture

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  • Jayakumar.j
    Jayakumar.j

    @jayakumarj-3JOeUc • Aug 2, 2012

    what are the research going on in engines ?

    0
  • Jayakumar.j
    Jayakumar.j

    @jayakumarj-3JOeUc • Aug 5, 2012

    sir,
    what is the characteristics of exhaust gas ?.

    0
  • zaveri
    zaveri

    @zaveri-5TD6Sk • Aug 9, 2012

    Jayakumar.jsir,
    what is the characteristics of exhaust gas ?.

    has high velocity and temperature and a lot of NOx gasses in it if a catalytic converter is not used.

    0