Unlock instant, AI-driven research and patent intelligence for your innovation.

Fuels compositions for direct injection gasoline engines

a technology of fuel composition and gasoline engine, which is applied in the direction of fuels, machines/engines, mechanical equipment, etc., can solve the problems of fuel related deposits in dig engines, increased deposits, and current generation dig technology deposit problems

Inactive Publication Date: 2006-11-02
MALFER DENNIS J +2
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The fuel composition significantly reduces injector deposit formation and maintains engine performance, restoring flow and minimizing emissions, with the additives effectively controlling deposits in both DIG and MPI engines, enhancing fuel efficiency and reducing maintenance needs.

Problems solved by technology

This more severe environment can accelerate fuel degradation and oxidation resulting in increased deposits.
Current generation DIG technologies have experienced deposit problems.
Fuel related deposits in DIG engines are an issue of current interest since this technology is now commercial in Japan and Europe.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fuels compositions for direct injection gasoline engines
  • Fuels compositions for direct injection gasoline engines
  • Fuels compositions for direct injection gasoline engines

Examples

Experimental program
Comparison scheme
Effect test

examples

[0077] The practice and advantages of this invention are demonstrated by the following examples which are presented for purposes of illustration and not limitation.

[0078] To demonstrate the effectiveness of the additive systems of the present invention in reducing deposits in direct injection gasoline engines, tests were conducted in a 1982 Nissan Z22e (2.2 liter) dual-sparkplug, four-cylinder engine modified to run in a homogeneous direct injection mode, at a fuel rich lambda of 0.8 to accelerate injector deposit formation. Details of this test are set forth in Aradi, A. A., Imoehl, B., Avery, N. L., Wells, P. P., and Grosser, R. W.: “The Effect of Fuel Composition and Engine Operating Parameters on Injector Deposits in a High-Pressure Direct Injection Gasoline (DIG) Research Engine”, SAE Technical Paper 1999-01-3690 (1999).

[0079] Modifications to the engine included replacing the exhaust-side spark plugs with pre-production high-pressure common rail direct injectors, removing th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
weightaaaaaaaaaa
weightaaaaaaaaaa
viscosity indexaaaaaaaaaa
Login to View More

Abstract

Injector deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising a fuel-soluble compound having the formula (I): wherein R1 and R2 are independently C1-4 alkyl, R3 is a radical of the formula CmH2m wherein m is an integer of 2 to 6, R4 and R5 are each independently (i) hydrogen (ii) C1-4alkyl, wherein R6 is selected from the group consisting of hydrogen and C1-4 alkyls and R7 is selected from the group consisting of hydrogen and C1-30 alkyl, (iv) wherein R8 is a saturated or unsaturated, linear, branched or cyclic, C7-23 hydrocarbyl group or (v) wherein R4 and R5 together with the nitrogen atom to which they are bonded, form a cyclic ring in which further hetero atoms.

Description

FIELD OF THE INVENTION [0001] This application is a continuation of U.S. patent application Ser. No. 09 / 952,260, filed on Sep. 14, 2001. That application is incorporated by reference herein in its entirety. [0002] The present invention relates to new spark-ignition fuel compositions and methods for controlling, i.e. reducing or eliminating, deposits and reducing soot formation in direct injection gasoline (DIG) engines. More particularly, the invention relates to fuel compositions comprising a spark-ignition fuel and a fuel-soluble deposit control additive comprising a specific amine compound or derivative thereof and the use of said fuel compositions in DIG engines to reduce injector plugging. BACKGROUND OF THE INVENTION [0003] Over the years considerable work has been devoted to additives for controlling (preventing or reducing) deposit formation in the fuel induction systems of spark-ignition internal combustion engines. In particular, additives that can effectively control fuel ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/22C10L1/06C10L1/14C10L1/16C10L1/18C10L1/222C10L1/224C10L1/232C10L10/00F02B75/12
CPCC10L1/143Y02T10/123C10L1/1641C10L1/198C10L1/1985C10L1/22C10L1/2222C10L1/2225C10L1/224C10L1/232C10L1/238C10L1/2383C10L1/2387C10L10/00F02B2075/125C10L1/1616C10L10/04Y02T10/12C10L1/06
Inventor MALFER, DENNIS J.SCHWAB, SCOTT D.HENLY, TIMOTHY J.
Owner MALFER DENNIS J