Back to results
US 10,480,370 B2Granted
Dual power supply for eCAT and control
AssigneeGM Global Technology Operations LLC
InventorRoberto Romanato
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses are provided for controlling an electrically-heated catalyst system of a vehicle. A method includes that a power request is received. The method includes determining whether to use a high power voltage net or a low power voltage net based upon the received power request. The electrically-heated catalyst system is controlled using the determined high power voltage net or the low power voltage net.
Claims20
A method for controlling electric power to an electrically-heated catalyst system of a vehicle, comprising:
- receiving a power request value related to operation of the electrically-heated catalyst system;
- determining whether to use a high power voltage net or a low power voltage net based upon the received power request value;
- and
- controlling the electrically-heated catalyst system using the determined high power voltage net or the low power voltage net;
- wherein when the high power voltage net is used, then a first PWM value is set to zero and a second PWM value for controlling the electrically-heated catalyst system is set to a value that is based upon the requested power value, a resistance value, and a voltage value of the high power voltage net:
- wherein when the low power voltage net is used, then the second PWM value is set to zero and the first PWM value for is set to a value that is based upon the requested power value, the resistance value, and a voltage value of the low power voltage net.
3 more elements
A system for controlling electric power to an electrically-heated catalyst system of a vehicle, comprising:
- a high power voltage net and a low power voltage net for supplying control to the electrically-heated catalyst system;
- switches associated with the high power voltage net and the low power voltage net;
- wherein the switches are operated in response to determining whether to use the high power voltage net or the low power voltage net based upon a received power request value;
- and
- wherein the electrically-heated catalyst system is controlled using the determined high power voltage net or the low power voltage net;
- wherein when the high power voltage net is used, then a first PWM value is set to zero and a second PWM value for controlling the electrically-heated catalyst system is set to a value that is based upon the requested power value, a resistance value, and a voltage value of the high power voltage net:
- wherein when the low power voltage net is used, then the second PWM value is set to zero and the first PWM value for is set to a value that is based upon the requested power value, the resistance value, and a voltage value of the low power voltage net.
4 more elements
A vehicle, comprising:
- an electrically-heated catalyst system;
- a high power voltage net and a low power voltage net for supplying control to the electrically-heated catalyst system;
- and
- switches associated with the high power voltage net and the low power voltage net;
- wherein the switches are operated in response to determining whether to use the high power voltage net or the low power voltage net based upon a received power request value;
- wherein the electrically-heated catalyst system is controlled using the determined high power voltage net or the low power voltage net;
- wherein when the high power voltage net is used, then a first PWM value is set to zero and a second PWM value for controlling the electrically-heated catalyst system is set to a value that is based upon the requested power value, a resistance value, and a voltage value of the high power voltage net;
- wherein when the low power voltage net is used, then the second PWM value is set to zero and the first PWM value for is set to a value that is based upon the requested power value, the resistance value, and a voltage value of the low power voltage net.
5 more elements
Dependencies are inferred from the claim text.