Over the last thirty years cars sold in Sweden have become larger, and what's more they accelerate ever faster. This has entailed that some of the cars' technical improvements have not led to lower fuel use.
If cars had not become larger and accelerated faster between 1985 and 2007, they would have required 47 percent less fuel. Instead, the actual reduction during the period has been 18 percent.
While interest in environmentally friendly cars has indeed increased in recent years, instead of a shift toward smaller cars with less horsepower, there has been a rise in the number of diesel and ethanol cars. This has led to reduced carbon-dioxide emissions, but more measures are needed to make full use of the potential we have to rein in emissions.
These findings are being presented by Frances Sprei at Chalmers University of Technology in Gothenburg, Sweden, who has spent several years researching developments in newly sold cars in Sweden. Now she is putting forward these new figures in her doctoral dissertation.
"Measures that may lower emissions involve using policy instruments that reduce fuel consumption per se, regardless of fuel type," says Frances Sprei.
Her dissertation is titled "Energy Efficiency Versus Gains in Consumer Amenities" and was publicly defended on September 6 at Chalmers University of Technology in Gothenburg.
Principal supervisor: Professor John Holmberg, Physical Resource Theory, Chalmers, Tel: +46 (0)31 - 772 31 45, email@example.comDeputy supervisor. Sten Karlsson, Physical Resource Theory, Chalmers
Sofie Hebrand | idw
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
Reusable carbon nanotubes could be the water filter of the future, says RIT study
30.03.2017 | Rochester Institute of Technology
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
Two researchers at Heidelberg University have developed a model system that enables a better understanding of the processes in a quantum-physical experiment...
Glaciers might seem rather inhospitable environments. However, they are home to a diverse and vibrant microbial community. It’s becoming increasingly clear that they play a bigger role in the carbon cycle than previously thought.
A new study, now published in the journal Nature Geoscience, shows how microbial communities in melting glaciers contribute to the Earth’s carbon cycle, a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
21.04.2017 | Physics and Astronomy
21.04.2017 | Health and Medicine
21.04.2017 | Physics and Astronomy