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1. US20090299612 - METHOD OF IDENTIFYING ENGINE GAS COMPOSITION

Office
United States of America
Application Number 12162324
Application Date 26.01.2007
Publication Number 20090299612
Publication Date 03.12.2009
Publication Kind A1
IPC
F02D 41/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
G01M 15/04
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
15Testing of engines
04Testing internal-combustion engines
G01M 15/08
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
15Testing of engines
04Testing internal-combustion engines
08by monitoring pressure in cylinders
Applicants RICARDO UK LIMITED
Inventors Truscott Anthony J.
Cornwell Richard Charles E.
Salamon Tomasz M.
Egginton Martin
Agents OSHA LIANG L.L.P.
Priority Data 0601727 27.01.2006 GB
Title
(EN) METHOD OF IDENTIFYING ENGINE GAS COMPOSITION
Abstract
(EN)

A method and apparatus of identifying engine gas composition in an engine cylinder comprise obtaining a measure of cylinder pressure from a cylinder pressure sensor, deriving the polytropic index from said measure and obtaining a measure of the quantity of an engine gas component therefrom.