|
|
|
|
|
|
|
|
General information
|
|
|
General criteria
|
|
|
|
|
|
|
|
|
|
|
Status of development: (no data) |
|
|
|
|
|
(no details available) |
|
|
|
|
|
|
|
|
Time horizon for broad application: 5 - 10 years |
|
|
|
|
|
(no details available) |
|
|
|
|
|
|
|
|
Expected technological development: highly dynamic |
|
|
|
|
|
The new Copenhagen S-trains show that single-axle running gear of the KERF type are a mature technology. There is however still considerable potential for further technological development, especially as far as the self-steering concept is concerned. There are many possible lanes of future development going far beyond the KERF concept, especially in the field of mechatronically controlled running gear. |
|
|
|
|
|
|
|
|
Motivation:
|
|
|
|
|
|
Mass reduction |
|
|
|
|
|
|
|
|
Benefits (other than environmental): medium |
|
|
|
|
|
Mass reduction
Besides reduced energy consumption, weight reduction leads to higher
acceleration rates for given traction power (or less traction power to be
installed for a given acceleration rate). |
|
|
|
|
|
|
|
|
Barriers: medium |
|
|
|
|
|
Technological maturity
KERFs being a relatively new technology with only one train type running in
regular service (Copenhagen S-train), there is still some scepticism about the
reliability of the concept. |
|
|
|
|
|
|
|
|
Success factors:
|
|
|
|
|
|
(no details available) |
|
|
|
|
|
|
|
|
Applicability for railway segments: (no data) |
|
|
|
|
Type of traction: electric - DC, electric - AC, diesel
|
|
|
|
|
Type of transportation: passenger - main lines, passenger - high speed, passenger - regional lines, passenger - suburban lines, freight
|
|
|
|
|
|
Single-axle concepts have potential in many types of trains. It is however obvious that due to lower train weight the short-term potential is especially high in local and regional operation. This is also the area with highest energy efficiency effects (cf. Environmental criteria - Energy efficiency potential). |
|
|
|
|
|
|
|
|
Grade of diffusion into railway markets:
|
|
|
|
|
Diffusion into relevant segment of fleet: < 5% |
|
|
|
|
Share of newly purchased stock: < 20% |
|
|
|
|
|
(no details available) |
|
|
|
|
|
|
|
|
Market potential (railways): medium |
|
|
|
|
|
(no details available) |
|
|
|
|
|
|
|
|
Example:
|
|
|
|
|
|
Copenhagen S-trains |
|
|
Environmental criteria
|
|
|
Economic criteria
|
|
|
|
|
|
|
|
|
|
|
Vehicle - fix costs: medium |
|
|
|
|
|
|
|
|
Vehicle - running costs: significant reduction |
|
|
|
|
|
|
|
|
Infrastructure - fix costs: none |
|
|
|
|
|
|
|
|
Infrastructure - running costs: unchanged |
|
|
|
|
|
|
|
|
Scale effects: medium |
|
|
|
|
|
|
|
|
Amortisation: (no data) |
|
|
Application outside railway sector (this technology is railway specific)
|
|
|
Overall rating
|