engint » 13 Eyl 2007, 17:04
Superb 1.9 TDI Tiptronik'in yakit tuketimi icin verilen teorik verilerin pratikte pek tuttugu soylenemez...
Size gecenlerde yakit tuketim verilerinin nasil bulundugu ile ilgili bir masaj atmistim... Asagida tekrarliyorum...
Federal Test Procedure (FTP)
The Federal Test Procedure (FTP) is a standardized laboratory test method used in Canada and the United States for new vehicle testing. Selected pre-production prototypes of new vehicle models are driven by a trained driver in a laboratory on a dynamometer. The same test parameters and driving cycles are used to ensure that each vehicle is tested under identical conditions, and that the results are consistent and repeatable.
The FTP is composed of two tests; for fuel efficiency purposes they may be referred to as the city test and the highway test.
The city test simulates a 12-kilometre, stop-and-go trip with an average speed of 32 kph and a top speed of 91 kph. The test runs for 23 minutes and includes 18 stops. Approximately 4 minutes of test time are spent idling to represent waiting at traffic lights. This test begins from a cold engine start which is similar to starting a vehicle after it has been parked overnight. When the test is completed, the test cycle starts again with a hot engine start and the first 8 minutes of the test are repeated. This simulates restarting a vehicle after it has been warmed up, driven, and then stopped for a short time.
The highway test simulates a 16-kilometre trip with an average speed of 77 kph and a top speed of 97 kph. The test runs for 13 minutes and does not include any stops, however, the speed varies to simulate different kinds of rural and highway roads. This test begins from a hot engine start.
The FTP is used to certify that vehicles meet the canadian emission standards. In addition, fuel economy estimates may be calculated from the emissions generated during the city and highway tests.
The FTP uses a standardized test fuel with a known carbon content. During a test, carbon compounds expelled in the exhaust are measured and a fuel economy test value is calculated using a specific carbon balance equation.
Burada da goruldugu uzere, laboratuvar ortaminda ve yukaridaki kistaslarla elde edilen sehir ici ve disi verilerini, ozellikle Istanbul trafiginde tutturmak pek mumkun degil... Superb'in 62 lt alan deposu ile sehir ici ortalama 600-650 km, sehir disi (uzun yolda) ise 950 km yapabiliyorum...
Tabii, burada gorulen o ki, pratikte sehir icinde dusuk kalan teorik yakit tuketimi, sehir disi verilerinde yuksek kaliyor... Aslinda daha cimri bir kullanimla sehir disi yakit tuketimini 1000 km uzerine cikaranlari da biliyorum...
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