Patent · US Active

Method to determine a cetane number of a fuel

US10345286B2 · kind B2 · utility

2Cited by

4References

12Claims

0Family size

Assignee

Delphi Technologies IP Limited · BB

Inventors

Thierry Cochet · Blois, FR
Jean-Michel Bacq · Chargé, FR

Key dates

Filing date	Sep 29, 2015
Grant date	Jul 9, 2019
Priority date	—
Expiry date	Jan 18, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/40
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method of determining the cetane number of a fuel in an internal combustion engine comprising, during running of the engine, i) with respect to one cylinder, performing a routine including a series of injections such that for each injection a quantity of fuel is injected into the cylinder, and during the routine varying the angle at which the injections takes place with respect to crankshaft angle; ii) measuring engine speed at intervals during the series of injections and determining values for changes in engine speed consequent to the injections; iii) determining cetane number from a pre-stored relationship relating the cetane number to changes in engine speed consequent to changes in the test injection angle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.