Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
SportTrac Discussion
Engine & Drivetrain
Will Bargain Gas Hurt Your ST?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Ford SportTrac Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Tom Schindler" data-source="post: 756491" data-attributes="member: 56140"><p>This is what you said?</p><p></p><p></p><p></p><p><em>Octane rating has no direct impact on the deflagration (burn) of the air/fuel mixture in the combustion chamber. Other properties of gasoline and engine design account for the manner at which deflagration takes place. In other words, the flame speed of a normally ignited mixture is not directly connected to octane rating. Deflagration is the type of combustion that constitutes the normal burn. Detonation is a different type of combustion and this is to be avoided in spark ignited gasoline engines. Octane rating is a measure of detonation resistance, not deflagration characteristics.</em></p><p><em></em></p><p><em></em></p><p><em></em></p><p><em>It might seem odd that fuels with higher octane ratings explode less easily, yet are popularly thought of as more powerful. The misunderstanding is caused by confusing the ability of the fuel to resist compression detonation as opposed to the ability of the fuel to burn (combustion).</em></p><p></p><p></p><p></p><p>Higher octane fuel does not burn hotter. It does not have more energy. It only allows you to have an engine running more advanced ignition or higher compression.</p><p></p><p></p><p></p><p></p><p></p><p>Tom</p></blockquote><p></p>
[QUOTE="Tom Schindler, post: 756491, member: 56140"] This is what you said? [i]Octane rating has no direct impact on the deflagration (burn) of the air/fuel mixture in the combustion chamber. Other properties of gasoline and engine design account for the manner at which deflagration takes place. In other words, the flame speed of a normally ignited mixture is not directly connected to octane rating. Deflagration is the type of combustion that constitutes the normal burn. Detonation is a different type of combustion and this is to be avoided in spark ignited gasoline engines. Octane rating is a measure of detonation resistance, not deflagration characteristics. It might seem odd that fuels with higher octane ratings explode less easily, yet are popularly thought of as more powerful. The misunderstanding is caused by confusing the ability of the fuel to resist compression detonation as opposed to the ability of the fuel to burn (combustion).[/i] Higher octane fuel does not burn hotter. It does not have more energy. It only allows you to have an engine running more advanced ignition or higher compression. Tom [/QUOTE]
Insert quotes…
Verification
Post reply
SportTrac Discussion
Engine & Drivetrain
Will Bargain Gas Hurt Your ST?
Top