What does octane rating mean?
Definitions for octane rating
oc·tane rat·ing
This dictionary definitions page includes all the possible meanings, example usage and translations of the word octane rating.
Princeton's WordNet
octane number, octane ratingnoun
a measure of the antiknock properties of gasoline
Wikipedia
Octane rating
An octane rating, or octane number, is a standard measure of a fuel's ability to withstand compression in an internal combustion engine without detonating. The higher the octane number, the more compression the fuel can withstand before detonating. Octane rating does not relate directly to the power output or the energy content of the fuel per unit mass or volume, but simply indicates gasoline's capability against compression. Whether or not a higher octane fuel improves or impairs an engine's performance depends on the design of the engine. In broad terms, fuels with a higher octane rating are used in higher-compression gasoline engines, which may yield higher power for these engines. Such higher power comes from the fuel's higher compression by the engine design, and not directly from the gasoline.In contrast, fuels with lower octane (but higher cetane numbers) are ideal for diesel engines because diesel engines (also called compression-ignition engines) do not compress the fuel, but rather compress only air and then inject fuel into the air that was heated by compression. Gasoline engines rely on ignition of air and fuel compressed together as a mixture, which is ignited near the end of the compression stroke by electric spark plugs. Therefore, high compressibility of the fuel matters mainly for gasoline engines. Using gasoline with lower octane may cause engine knocking (pre-ignition).The octane rating of aviation gasoline was extremely important in determining aero engine performance in the aircraft of World War II. The octane rating alone did not only determine the performance of the gasoline, but also the versatility of the fuel in handling a range of lean to rich operating conditions.
ChatGPT
octane rating
An octane rating is a measure of a fuel's ability to resist engine knock or pinging, which is a knocking noise the engine makes when it's under high temperature or pressure during combustion. The rating is based on the percentage of isooctane in the fuel, with pure isooctane having a rating of 100. Higher octane ratings mean higher resistance to knocking, which allows the fuel to burn more cleanly and efficiently.
Wikidata
Octane rating
Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating. In broad terms, fuels with a higher octane rating are used in high-compression engines that generally have higher performance. In contrast, fuels with lower octane numbers are ideal for diesel engines. Use of gasoline with lower octane numbers may lead to the problem of engine knocking.
Matched Categories
Numerology
Chaldean Numerology
The numerical value of octane rating in Chaldean Numerology is: 5
Pythagorean Numerology
The numerical value of octane rating in Pythagorean Numerology is: 1
Translations for octane rating
From our Multilingual Translation Dictionary
- xếp hạng octanVietnamese
Get even more translations for octane rating »
Translation
Find a translation for the octane rating definition in other languages:
Select another language:
- - Select -
- 简体中文 (Chinese - Simplified)
- 繁體中文 (Chinese - Traditional)
- Español (Spanish)
- Esperanto (Esperanto)
- 日本語 (Japanese)
- Português (Portuguese)
- Deutsch (German)
- العربية (Arabic)
- Français (French)
- Русский (Russian)
- ಕನ್ನಡ (Kannada)
- 한국어 (Korean)
- עברית (Hebrew)
- Gaeilge (Irish)
- Українська (Ukrainian)
- اردو (Urdu)
- Magyar (Hungarian)
- मानक हिन्दी (Hindi)
- Indonesia (Indonesian)
- Italiano (Italian)
- தமிழ் (Tamil)
- Türkçe (Turkish)
- తెలుగు (Telugu)
- ภาษาไทย (Thai)
- Tiếng Việt (Vietnamese)
- Čeština (Czech)
- Polski (Polish)
- Bahasa Indonesia (Indonesian)
- Românește (Romanian)
- Nederlands (Dutch)
- Ελληνικά (Greek)
- Latinum (Latin)
- Svenska (Swedish)
- Dansk (Danish)
- Suomi (Finnish)
- فارسی (Persian)
- ייִדיש (Yiddish)
- հայերեն (Armenian)
- Norsk (Norwegian)
- English (English)
Word of the Day
Would you like us to send you a FREE new word definition delivered to your inbox daily?
Citation
Use the citation below to add this definition to your bibliography:
Style:MLAChicagoAPA
"octane rating." Definitions.net. STANDS4 LLC, 2024. Web. 24 Apr. 2024. <https://www.definitions.net/definition/octane+rating>.
Discuss these octane rating definitions with the community:
Report Comment
We're doing our best to make sure our content is useful, accurate and safe.
If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly.
Attachment
You need to be logged in to favorite.
Log In