US2022356409A1PendingUtilityA1

Method for reducing low speed pre-ignition

45
Assignee: SHELL OIL COPriority: Apr 1, 2019Filed: Mar 27, 2020Published: Nov 10, 2022
Est. expiryApr 1, 2039(~12.7 yrs left)· nominal 20-yr term from priority
Inventors:Abhishek KarArjun PrakashAllen A. AradiRoger Francis Cracknell
C10N 2010/12C10N 2030/02C10M 2203/003C10N 2010/04C10N 2030/42C10L 1/06C10M 171/00C10M 169/04C10N 2040/255C10N 2030/06C10M 135/18C10L 2270/023C10M 2219/068C10N 2030/43C10L 2200/0423
45
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

Use of a gasoline fuel composition for reducing the occurrence of Low Speed Pre-Ignition (LSPI) in a spark-ignition internal combustion engine, wherein the gasoline fuel composition comprises a gasoline base fuel and has a PM Index of 1.4 or less.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . (canceled) 
     
     
         11 . A method for reducing the occurrence of Low Speed Pre-Ignition in a spark ignition internal combustion engine, the method comprising supplying to the engine a gasoline fuel composition comprising a gasoline base fuel and having a PM Index of 1.4 or less. 
     
     
         12 . The method according to  claim 11 , wherein the spark-ignition internal combustion engine is a direct injection spark-ignition internal combustion engine. 
     
     
         13 . The method according to  claim 12 , wherein the gasoline fuel composition has a PM Index of 1.0 or less. 
     
     
         14 . The method according to  claim 12 , wherein the gasoline fuel composition has a PM Index of 0.8 or less. 
     
     
         15 . The method according to  claim 12 , wherein the spark-ignition internal combustion engine is lubricated with a lubricant composition comprising 500 ppmw of calcium or greater, based on the total lubricant composition. 
     
     
         16 . The method according to  claim 15 , wherein the lubricant composition comprises from 1000 ppmw of calcium or greater, based on the total lubricant composition. 
     
     
         17 . The method according to  claim 15 , wherein the lubricant composition comprises 1500 ppmw of calcium or greater, based on the total lubricant composition. 
     
     
         18 . The method according to  claim 15 , wherein the lubricant composition comprises 1000 ppm or magnesium or less, based on the total lubricant composition. 
     
     
         19 . The method according to  claim 15 , wherein the lubricant composition comprises a zinc-based anti-wear additive in an amount of 1200 ppmw or less, based on the total lubricant composition. 
     
     
         20 . The method according to  claim 15 , wherein the lubricant composition comprises a molybdenum-based friction reducing agent at a level of 1000 ppmw or less, based on the total lubricant composition.

Cited by (0)

No later patents cite this yet.

References (0)

No backward citations on record.