Method for controlling a vehicle propulsion system
AssigneeVolvo Truck Corporation
InventorsBjörn LUNDSTEDT, Anders ERIKSSON
Life of this patent
Estimating the term…
Abstract
A method for controlling a vehicle propulsion system. More particularly, the method estimates a future, upcoming driving condition and controls the vehicle propulsion system to operate the prime mover in a specific operation mode based on a determined regeneration level of a particle filter for the estimated future, upcoming driving condition.
Claims16
A method for controlling a vehicle propulsion system, said vehicle propulsion system comprising a prime mover for propelling a vehicle, and an exhaust gas system connected downstream the prime mover, wherein said exhaust gas system comprises a particle filter for removal of particulate matter contained in the combustion gases from the prime mover, said method being characterized by the steps of:
- determining a current capacity of said particle filter;
- estimating a future, upcoming driving condition for the vehicle;
- estimating a temperature level of the particle filter when exposing the vehicle to the upcoming driving condition;
- determining a regeneration level of said particle filter when the particle filter is exposed to said estimated temperature level;
- and
- if the regeneration level of said particle filter is above a predetermined threshold limit:
- controlling the vehicle propulsion system to operate the prime mover in a first operating mode until the vehicle is exposed to the future, upcoming driving condition, said first operating mode allows the prime mover to exhaust combustion gases comprising an amount of particulate matter corresponding to the current capacity of the particle filter.
A vehicle propulsion system comprising a prime mover for propelling a vehicle, an exhaust gas system connected downstream the prime mover, said exhaust gas system comprising a particle filter for removal of particulate matter contained in the combustion gases from the prime mover, wherein the vehicle propulsion system further comprises a control unit configured to:
- determine a current capacity of said particle filter;
- estimate a future, upcoming driving condition for the vehicle;
- estimate a temperature level of the particle filter when exposing the vehicle to the upcoming driving condition;
- determine a regeneration level of the particle filter when the particle filter is exposed to said estimated temperature level;
- and
- if the regeneration level of the particle filter is above a predetermined threshold limit:
- control the vehicle propulsion system to operate the prime mover in a first operating mode until the vehicle is exposed to the future, upcoming driving condition, said first operating mode allows the prime mover to exhaust combustion gases comprising an amount of particulate matter corresponding to the current capacity of the particle filter.
Dependencies are inferred from the claim text.