Active Limitation of Tire Wear and Emissions for Electrified Vehicles
Sprache des Vortragstitels:
Society of Automotive Engineers, SAE 2021
Sprache des Tagungstitel:
Eliminating toxic exhaust emissions, amongst them
particulate matter (PM), is one of the driving factors
behind the increasing use of electrified vehicles.
However, it is frequently overseen that PM arise not only from
combustion, but from non-exhaust traffic related causes as
well; in particular from the vehicle brakes, tires and the road
surface. Furthermore, as electrified vehicles weigh more and
typically exhibit higher torques at low speeds, their nonexhaust
emissions tend to be higher than for comparable
conventional vehicles, especially those generated by tires.
Fortunately, tire related emissions are directly related to tire
wear, so that limiting tire wear can reduce these emissions as
well. This can be accomplished by intelligently modulating
the vehicle torque profile in real time, to limit the operation
in conditions of higher tire wear. In this paper, we suggest an
approach based on predictive control that take into account
expected future driving conditions, and which can reduce
both tire wear and energy consumption, without significantly
affecting the drivability of the vehicle.