US 12,662,648 B2 · Lubricant compositions containing silicon for reduced pre-ignition in hydrogen fueled engines

Abstract

This invention relates to a method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine (HICE) during operation of the engine. The method includes the steps of: a) providing to the HICE a lubricating oil composition including or resulting from the admixing of: i) a base oil having a KV100 of less than or equal to 12 cSt and included at greater than 50 wt. % of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof; ii) at least one overbased metal containing detergent with a Total Base Number (KOH/g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition; iii) at least one silicon containing compound included at a treat level to deliver between 50 to 900 ppm by weight of total silicon to the composition; and iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.0 wt. %, a total phosphorous level of less than or equal to 0.120 wt. %, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or 0W-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60; b) providing a fuel comprising hydrogen to the HICE; and c) combusting the fuel in the HICE. Also provided are a lubricating oil composition and a concentrate for use in a HICE to reduce the propensity for abnormal combustion events.

Claims42

Dependent claims

A method of reducing abnormal combustion events in a hydrogen fueled internal combustion engine (HICE) during operation of the engine comprising:

a) providing to the hydrogen fueled internal combustion engine a lubricating oil composition comprising or resulting from the admixing of:
i) a base oil having a viscosity KV100 of less than or equal to 12 cSt and included at greater than 50 wt. % of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;
ii) at least one overbased metal containing detergent with a Total Base Number (KOH/g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition;
iii) at least one silicon containing compound included at a treat level to deliver between 50 to 900 ppm by weight of total silicon to the composition;
and
iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.0 wt. %, a total phosphorus level of less than or equal to 0.120 wt. %, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or OW-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60;
and
b) providing a fuel comprising hydrogen to the hydrogen fueled internal combustion engine;
and
c) combusting the fuel in the hydrogen fueled internal combustion engine;
and wherein the hydrogen fueled internal combustion engine (HICE) operates at a BMEP ranging from 12 bar to 18 bar and at an air:
fuel ratio (AFR) from 1:1 to 3:1.

9 more elements

A lubricating oil composition for hydrogen fueled internal combustion engines (HICE) comprising or resulting from the admixing of:

i) a base oil having a KV100 of less than or equal to 12 cSt and included at greater than 50 wt. % of the composition and comprising a Group I base oil, a Group II base oil, a Group III base oil, a Group IV base oil, or combinations thereof;
ii) at least one overbased metal containing detergent with a Total Base Number (KOH/g) greater than or equal to 9 and less than or equal to 500 and included at a treat level to deliver between 100 to 5000 ppm by weight of total metal and between 0.15 wt. % to 8.0 wt. % of total soap to the composition;
iii) at least one silicon containing compound included at a treat level to deliver between 50 to 900 ppm by weight of total silicon to the composition;
and
wherein the lubricating oil composition has a total sulfated ash of less than or equal to 2.0 wt. %, a total phosphorus level of less than or equal to 0.120 wt. %, and a SAE viscosity grade of 25W-X, 20W-X, 15W-X, 10W-X, 5W-X or OW-X, where X represents any one of 8, 12, 16, 20, 30, 40, 50 or 60;
wherein the lubricating oil composition further comprises a dispersant, dispersant viscosity modifier or combinations thereof, and
wherein the dispersant or dispersant viscosity modifier comprises an amide, imide, and/or ester functionalized partially or fully saturated polymer comprising C4.5 olefins having:
i) an Mw/Mn of less than 2, ii) a Functionality Distribution (Fd) value of 3.5 or less, and iii) an Mn of 10,000 g/mol or more of the polymer prior to functionalization.

5 more elements

Dependencies are inferred from the claim text.

Lubricant compositions containing silicon for reduced pre-ignition in hydrogen fueled engines

Life of this patent

Lubricant compositions containing silicon for reduced pre-ignition in hydrogen fueled engines

Life of this patent

Abstract

Claims42