Intellectual Property India Publishes Patent Application for Lubricant Compositions Containing Olefin Polymers For Reduced Pre- Ignition In Hydrogen Fueled Engines

MUMBAI, India, July 7 -- Intellectual Property India has published a patent application (202617068628 A) filed by Infineum International Limited on June 01, 2026, for Lubricant Compositions Containing Olefin Polymers For Reduced Pre- Ignition In Hydrogen Fueled Engines.

Inventors include Marsh, Adam; Driver, Mark; and Chirita, Roxana.

The application for the patent was published on July 03, 2026, under issue no. 27/2026.

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 olefin polymer at from 1.0 to 20 wt.% based upon the total weight of the lubricating oil composition, wherein the at least one olefin polymer comprises a partially or fully saturated olefin homopolymer or copolymer backbone having an Mn of 10,000 g/mol or more (GPC-PS), and wherein the homopolymer or copolymer backbone is derived from monomers selected from the group consisting of C2 to C30 linear alpha olefins, C4 to C20 conjugated dienes, and combinations thereof; iii) 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; and iv) the lubricating oil composition having a total sulfated ash of less than or equal to 2.5 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 lubricating oil compositions and concentrates for use in a HICE to reduce the propensity for abnormal combustion events.

Disclaimer: Curated by HT Syndication.