US2022228077A1PendingUtilityA1

Production method of spark-ignition engine fuel

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Assignee: HONDA MOTOR CO LTDPriority: Jan 20, 2021Filed: Jan 17, 2022Published: Jul 21, 2022
Est. expiryJan 20, 2041(~14.5 yrs left)· nominal 20-yr term from priority
Inventors:Takuma AraiKohtaro HashimotoKatsuya MatsuuraKohei Kuzuoka
C10G 35/02C10L 1/06C10L 10/10C10L 2290/24C10L 2200/0492C10L 2200/0415C10L 2270/023C10G 2300/305C10G 2/00C10G 2300/1022
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Claims

Abstract

A production method of spark-ignition engine fuel, configured to produce fuel for a spark-ignition engine, includes: mixing a light naphtha with a cyclopentane.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A production method of spark-ignition engine fuel, configured to produce a fuel for a spark-ignition engine, comprising:
 mixing a light naphtha with a cyclopentane.   
     
     
         2 . The production method of spark-ignition engine fuel according to  claim 1 , wherein
 a mixing proportion of the cyclopentane is determined so that an ignition delay time of the fuel burning at a predetermined compression ratio, from a time point when the fuel is compressed up to the predetermined compression ratio to a time point when the fuel is self-ignited, is ten milliseconds or more.   
     
     
         3 . The production method of spark-ignition engine fuel according to  claim 2 , wherein
 the mixing proportion of the cyclopentane is fifty volume percent or less.   
     
     
         4 . The production method of spark-ignition engine fuel according to  claim 2 , wherein
 the mixing proportion of the cyclopentane is determined so that a difference between a calculated value of an octane number of the fuel calculated based on an octane number of the light naphtha, an octane number of the cyclopentane, and a mixing ratio between the light naphtha and the cyclopentane and an actual measured value of the octane number of the fuel is a predetermined value or more.   
     
     
         5 . The production method of spark-ignition engine fuel according to  claim 1 , wherein
 the light naphtha is an FT light naphtha obtained by Fischer-Tropsch synthesis.   
     
     
         6 . The production method of spark-ignition engine fuel according to  claim 1 , wherein
 the mixing proportion of the cyclopentane is determined based on a predetermined characteristic predetermined so that an octane number of the fuel is within a predetermined range, and is determined so that a difference between a calculated value of the octane number of the fuel calculated based on an octane number of the light naphtha, an octane number of the cyclopentane, and a mixing ratio between the light naphtha and the cyclopentane and an actual measured value of the octane number of the fuel is a predetermined value or more.   
     
     
         7 . The production method of spark-ignition engine fuel according to  claim 6 , wherein
 the predetermined range is predetermined based on an octane number of regular gasoline.

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