Controlling EATS temperature
AssigneeVolvo Truck Corporation
InventorsAnders Eriksson, Erik Jonsson Holm
Life of this patent
Estimating the term…
Abstract
In an aspect, a computer system is provided comprising processing circuitry configured to acquiring information indicating a temperature of an exhaust aftertreatment system, EATS, of a vehicle, maintaining a current gear of the vehicle in response to the vehicle approaching a downhill slope and the acquired information indicating that the temperature should be increased, and decreasing speed of an engine of the vehicle for causing engine braking in the downhill slope, while maintaining a speed of the vehicle within a set vehicle speed range.
Claims16
A computer system comprising processing circuitry configured to:
- acquiring information indicating a temperature of an exhaust aftertreatment system, EATS, of a vehicle;
- acquiring a set cruise control speed;
- determining a lower speed limit of a vehicle speed range based on the cruise control speed;
- determining an upper limit of the vehicle speed range based on the cruise control speed;
- setting a speed range of the vehicle to the upper speed limit of the vehicle speed range and the lower speed limit of the vehicle speed range;
- controlling the speed of the vehicle to be at the lower speed limit of the vehicle speed range in response to the vehicle approaching the downhill slope and the acquired information indicating that the temperature should be increased;
- maintaining a current gear of the vehicle in response to the vehicle approaching a downhill slope and the acquired information indicating that the temperature should be increased;
- and
- decreasing speed of an engine of the vehicle by discontinuing fuel supply to the engine for causing engine braking in the downhill slope, while maintaining a speed of the vehicle within a set vehicle speed range.
A computer-implemented method, comprising:
- acquiring, by processing circuitry of a computer system, information indicating a temperature of an exhaust aftertreatment system, EATS, of a vehicle;
- acquiring a set cruise control speed;
- determining a lower speed limit of a vehicle speed range based on the cruise control speed;
- determining an upper limit of the vehicle speed range based on the cruise control speed;
- setting a speed range of the vehicle to the upper speed limit of the vehicle speed range and the lower speed limit of the vehicle speed range;
- controlling the speed of the vehicle to be at the lower speed limit of the vehicle speed range in response to the vehicle approaching the downhill slope and the acquired information indicating that the temperature should be increased;
- maintaining, by the processing circuitry, a current gear of the vehicle in response to the vehicle approaching a downhill slope and the acquired information indicating that the temperature should be increased;
- and
- decreasing, by the processing circuitry, speed of an engine of the vehicle by discontinuing fuel supply to the engine for causing engine braking in the downhill slope, while maintaining a speed of the vehicle within a set vehicle speed range.
Dependencies are inferred from the claim text.