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achieved a fuel economy of 32.9 l/100 km in London [9]. The reported fuel economy of
diesel hybrid buses operating in London is presented in Table 1. As may be expected, the
type of bus and bus route significantly affects the fuel economy, where a single decker bus
generally exhibits a higher fuel economy than a double-decker bus. It was found that the
introduction of diesel hybrid technology improved the fuel economy on nearly all routes;
however, there were a couple of discrepancies to this, such as on the E8 bus route where the
fuel economy actually decreased. The introduction of the new Routemaster bus appears to
provide a slight improvement over previous diesel hybrid buses; however, there appears
to be significant discrepancies between the recorded and expected performance. Results
released by TfL in 2014 suggest a fuel economy in the range of 38.2–45.6 l/100 km, whereas
it is claimed by the manufacturer that a fuel economy of 24.4 l/100 km was recorded on
the 159 bus route. Unfortunately, the details for these results are not available and so it is
difficult to determine the validity of the results. This discrepancy could be the result of a
number of factors such as the route topology, traffic conditions, driving style and passenger
conditions.
In summary, TfL has successfully introduced a large number of diesel hybrid buses into their
bus fleet. This has resulted in a decrease in the emissions associated with the bus fleet, with
considerable further reductions expected. It provides an example of the successful deploy-
ment of diesel hybrid buses into a large operational bus fleet to achieve reductions in emis-
sions and fuel consumption. However, the increased cost and system complexity remain
problematic.
Figure 5. Expected reduction in CO2 and NOx emissions from the TFL bus fleet with the deployment of diesel/electric
hybrid buses [1, 15, 25]. Development of Bus Drive Technology towards Zero Emissions: A Review
http://dx.doi.org/10.5772/68139 39
zurück zum
Buch Hybrid Electric Vehicles"
Hybrid Electric Vehicles
- Titel
- Hybrid Electric Vehicles
- Autor
- Teresa Donateo
- Herausgeber
- InTech
- Ort
- Rijeka
- Datum
- 2017
- Sprache
- englisch
- Lizenz
- CC BY 4.0
- ISBN
- 978-953-51-3298-1
- Abmessungen
- 15.5 x 22.5 cm
- Seiten
- 162
- Schlagwörter
- Physical Sciences, Engineering and Technology, Engineering, Vehicle Engineering, Automobile Engineering
- Kategorie
- Technik