Today's automotive market imposes two conflicting constrains: the continuous enhancement of product quality and the reduction of allowable time-to-market. The increase in efficiency of experimental work in terms of information yield vs. time investment has therefore become a common target to all automotive industry manufactures. A general process of review of traditional and development of new experimental methodologies is under way. This work was aimed to designing and validating a generally applicable accelerated durability test, to be applied to on-vehicle emission control systems. The specific target was to replace the traditional extensive, but time consuming, road tests, with intensive, effective and time efficient roller bench tests. This was obtained through the following steps: Experimental identification of vehicle and emission control system 'mission profile' during the vehicle expected life, Analysis and processing of experimentally acquired parameters, identification of 'critical' events and correlation with specific usage conditions, definition of an accelerated cycle, to be performed on a roller bench, of comparable severity to road tests as far as the emission control system durability is concerned, standardization of test and extension to entire production model range, and validation of the accelerated cycle by means of comparative tests. The resulting accelerated cycle requires 200 to 400 hours of roller bench testing to simulate 80000 km on-road driving effects.
Mileage accumulation driving cycle on chassis dyno
Die Kilometerakkumulation beim Fahrzyklus auf Fahrzeugprüfständen
1995
10 Seiten, 5 Bilder, 2 Tabellen, 10 Quellen
Aufsatz (Konferenz)
Englisch
Mileage accumulation driving cycle on chassis dyno
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