EP 1060393 A1 20001220 - LABORATORY TEST FOR ASSESSING THE TENDENCY OF A GASOLINE, OPTIONALLY CONTAINING AN ADDITIVE, TO CAUSE DEPOSITS WHILE THE ENGINE IS RUNNING
Title (en)
LABORATORY TEST FOR ASSESSING THE TENDENCY OF A GASOLINE, OPTIONALLY CONTAINING AN ADDITIVE, TO CAUSE DEPOSITS WHILE THE ENGINE IS RUNNING
Title (de)
LABORTEST ZUM EVALUIEREN DER NEIGUNG EINES GEGEBENENFALLS MIT ADDITIVEN ANGEREICHERTEN BRENNSTOFFES, ABLAGERUNGEN ZU FORMEN WÄHREND DER WIRKUNG EINES MOTORS
Title (fr)
TEST DE LABORATOIRE DESTINE A EVALUER LA TENDANCE D'UNE ESSENCE, EVENTUELLEMENT ADDITIVEE, A FAIRE DES DEPOTS AU COURS DU FONCTIONNEMENT D'UN MOTEUR
Publication
Application
Priority
- FR 9903027 W 19991206
- FR 9816294 A 19981222
Abstract (en)
[origin: FR2787580A1] Laboratory method for evaluating the tendency of a petrol or petrol with additive to form deposits while the engine is running, by placing a tube in the injector oven of a gas chromatograph; keeping the tube at constant temperature in a constant air flow; injecting the petrol across the tube, and determining the amount of deposit formed by weighing the tube after dismounting it The tube is a glass insert with a mixing chamber. The petrol is injected by a pump across a needle positioned so the injection is at about 10 mm inside the tube. The petrol is injected at a constant flow of 0.5 to 2 kg/24 hours, preferably around 1 kg/24 hours. The petrol to be tested has 15 to 25% by mass (preferably 20%) of the lightest fractions removed before injection by sweeping with an inert gas at ambient temperature. To determine the tendency to form deposits on the inlet valves to the engine, the temperature is kept constant at between 250 and 300 deg. C, preferably near 275 deg. C. To determine the tendency to form deposits in the combustion chamber, the temperature is kept constant at between 325 and 375 deg. C, preferably near 350 deg. C.
IPC 1-7
IPC 8 full level
G01N 33/22 (2006.01); G01N 5/02 (2006.01); G01N 33/28 (2006.01); G01N 30/08 (2006.01)
CPC (source: EP US)
G01N 33/2805 (2013.01 - EP US); G01N 30/08 (2013.01 - EP US); Y10T 436/21 (2015.01 - EP US); Y10T 436/25375 (2015.01 - EP US)
Designated contracting state (EPC)
DE ES GB IT NL
DOCDB simple family (publication)
FR 2787580 A1 20000623; FR 2787580 B1 20010126; CA 2320923 A1 20000629; EP 1060393 A1 20001220; JP 2002533676 A 20021008; US 6566142 B1 20030520; WO 0037936 A1 20000629
DOCDB simple family (application)
FR 9816294 A 19981222; CA 2320923 A 19991206; EP 99958250 A 19991206; FR 9903027 W 19991206; JP 2000589944 A 19991206; US 62266400 A 20000822