Method for reducing injector deposits

A technology for injectors and deposits, applied in chemical instruments and methods, refining by filtration, machines/engines, etc., can solve problems such as engine failure, improve cleanliness, increase fuel thermal stability, and reduce expensive cleaning effect of dose

Pending Publication Date: 2022-05-06
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When one or more of the injectors gets stuck, the engine can fail outright

Method used

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  • Method for reducing injector deposits
  • Method for reducing injector deposits
  • Method for reducing injector deposits

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The diesel feed fraction containing B0 (no biocomponent) was contaminated with zinc neodecanoate, yielding 5 mg / kg elemental zinc. The diesel fraction was contacted with a non-porous polydimethylsiloxane membrane (PDMS) membrane layer supported by a porous poly(acrylonitrile) (PAN) layer at a transmembrane pressure of 15 bar and a temperature of 30°C. Fluxes, permeability and permeate yields and Zn content in the resulting permeate and retentate are shown in Table 1 below, the analysis of which was done by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). As shown in Table 1, the Zn content of the obtained permeate was less than 0.1 mg / kg, and the Zn content of the obtained retentate was 7.8 mg / kg + / - 0.8 mg / kg.

Embodiment 2

[0050] The diesel feed fraction containing B0 (no biocomponent) was contaminated with zinc neodecanoate, yielding 5 mg / kg elemental zinc. The diesel fraction is contacted with a non-porous polydimethylsiloxane membrane layer supported by a porous poly(acrylonitrile) layer at a transmembrane pressure of 15 bar and a temperature of 60°C. Fluxes, permeability and permeate yields and Zn content in the resulting permeate and retentate are shown in Table 1 below, the analysis of which was done by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Table 1 shows that the resulting permeate had a Zn content of less than 0.1 mg / kg and the resulting retentate had a Zn content of 15.7 mg / kg + / - 1.6 mg / kg.

[0051] Table 1

[0052]

[0053] discuss

[0054] Analysis in Table 1 shows low Zn content in both permeates. The conditions in Example 2 show that at higher temperatures (60°C) the amount of Zn withdrawn from the feed increases. Furthermore, higher temperature (60°C) sh...

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Abstract

A method for reducing injector deposits in an internal combustion engine fueled with a fuel composition includes contacting the fuel composition with a metal selective membrane located in a fuel delivery system. The reduction of such deposits provides fuel efficiency, an increase in fuel thermal stability, an increase in engine cleanliness, improves fuel economy and makes it possible to reduce the amount of expensive detergent used in the fuel composition.

Description

technical field [0001] The present invention relates to a method for reducing injector deposits in an internal combustion engine (ICE). Background technique [0002] The accumulation of deposits caused by the combustion of fuel in the engine reduces the efficiency of further combustion and leads to inefficient use of fuel over the life of the engine. A common problem with diesel engines is fouling of the injectors, especially the injector bodies and injector nozzles. Injector nozzle fouling occurs when the nozzles become clogged with deposits from diesel fuel. Deposits are also known to occur at injector tips. In addition to these "external" injector deposits in the nozzle bore and at the injector tip causing flow reduction and power loss, deposits can appear within the injector body causing further problems. These deposits may be referred to as internal diesel injector deposits or IDIDs. IDID includes deposits on the needle seat and upstream within the injector and excl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/00F02M37/22F02M37/24B01D61/02B01D71/70C10G31/09C10G75/00
CPCF02M37/0052F02M37/22F02M37/24B01D61/027B01D71/70C10G31/09C10G75/00F02M37/34F02M37/32B01D71/701B01D71/32C10G31/11F02M2200/05F02M2200/9015F02M2200/9053
Inventor R·W·M·沃德尔J·L·W·C·登伯斯特尔特N·J·伦斯威特H·琼斯
Owner SHELL INT RES MAATSCHAPPIJ BV
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