xmlns:atom="http://www.w3.org/2005/Atom" xmlns:atom="http://www.w3.org/2005/Atom"
Engine stop-start during vehicle stops: system which automatically shuts down and restarts the internal combustion engine during vehicle stops to reduce engine idling time. For automatic engine shut down the maximum time delay after the vehicle stop shall be not longer than 3 seconds.
Eco-roll without engine stop-start: system which automatically decouples the internal combustion engine from the drivetrain during specific downhill driving conditions with low negative gradients. During these phases the internal combustion engine is operated in engine idling. The system shall be active at least at all cruise control set speeds above 60 km/h.
Eco-roll with engine stop-start: system which automatically decouples the internal combustion engine from the drivetrain during specific downhill driving conditions with low negative slopes. During these phases the internal combustion engine is shut down after a short time delay and keeps shut down during the main share of the eco-roll phase. The system shall be active at least at all cruise control set speeds of above 60 km/h.
Predictive cruise control (PCC): systems which optimise the usage of potential energy during a driving cycle based on an available preview of road gradient data and the use of a GPS system. A PCC system declared in the input to the simulation tool shall have a gradient preview distance longer than 1 000 metres and cover all following functionalities:
Crest coasting
Approaching a crest the vehicle velocity is reduced before the point where the vehicle starts accelerating by gravity alone compared to the set speed of the cruise control so that the braking during the following downhill phase can be reduced.
Acceleration without engine power
During downhill driving with a low vehicle velocity and a high negative slope the vehicle acceleration is performed without any engine power usage so that the downhill braking can be reduced.
Dip coasting
During downhill driving when the vehicle is braking at the overspeed velocity, PCC increases the overspeed for a short period of time to end the downhill event with a higher vehicle velocity. Overspeed is a higher vehicle speed than the set speed of the cruise control system.
A PCC system can be declared as input to the simulation tool if either the functionalities set out in points (1) and (2) or points (1), (2) and (3) are covered.
Table 7 | ||||
Combinations of advanced driver assistance systems as input parameters into the simulation tool | ||||
Combination No | Engine stop-start during vehicle stops | Eco-roll without engine stop-start | Eco-roll with engine stop-start | Predictive cruise control |
---|---|---|---|---|
1 | yes | no | no | no |
2 | no | yes | no | no |
3 | no | no | yes | no |
4 | no | no | no | yes |
5 | yes | yes | no | no |
6 | yes | no | yes | no |
7 | yes | no | no | yes |
8 | no | yes | no | yes |
9 | no | no | yes | yes |
10 | yes | yes | no | yes |
11 | yes | no | yes | yes |
Textual Amendments