Transmission setting selection and auxiliary braking control system
Systems, apparatuses, and methods for controlling a transmission and other systems and components based on operation of an auxiliary braking system for a vehicle are disclosed. A controller includes one or more processing circuits, and is configured to: receive data regarding operation of an auxiliary brake system of the vehicle; determine an auxiliary brake fault condition based on the received data regarding operation of the auxiliary brake system; determine that a vehicle speed is greater than a requested vehicle speed; and control a transmission to downshift at least one setting relative to a current transmission setting.
1 . A system for a vehicle, the system comprising:
a controller including one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
receive data regarding operation of an auxiliary brake system of the vehicle;
determine an auxiliary brake fault condition based on the received data regarding operation of the auxiliary brake system;
determine that a vehicle speed is greater than a requested vehicle speed; and
control a transmission to downshift at least one setting relative to a current transmission setting.
2 . The system of claim 1 , wherein the vehicle speed is determined to be greater than the requested vehicle speed for a negative road grade.
3 . The system of claim 1 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to:
provide a prompt, via a user interface of the vehicle, to an operator to manually implement the downshift of the transmission.
4 . The system of claim 1 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to activate at least one of the following in response to determining the vehicle speed being greater than the requested vehicle speed:
an electromagnetic retarder,
a transmission retarder,
a parasitic load,
an engine brake, or
a regenerative braking system.
5 . The system of claim 4 , wherein the parasitic load is activated, and wherein the parasitic load includes at least one of an air conditioning compressor or a radiator fan.
6 . The system of claim 1 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to:
receive information ahead of the vehicle; and
determine that the vehicle will experience a negative road grade in a predefined distance based on the information ahead of the vehicle.
7 . The system of claim 1 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to:
identify an existing auxiliary brake fault; and
modify the requested vehicle speed to a modified requested vehicle speed that is lower than the requested vehicle speed in response to identifying the existing auxiliary brake fault.
8 . A method comprising:
receiving, by a controller, data regarding operation of an auxiliary brake system of a vehicle;
determining, by the controller, an auxiliary brake fault condition based on the received data regarding operation of the auxiliary brake system;
determining, by the controller, a vehicle speed that is greater than a requested vehicle speed; and
controlling, by the controller, a transmission to downshift at least one setting relative to a current transmission setting.
9 . The method of claim 8 , further comprising:
determining, by the controller, that the vehicle is on or is about to experience a negative road grade, wherein the controller determines that the vehicle speed is greater than the requested vehicle speed for the negative road grade.
10 . The method of claim 8 , further comprising:
providing, by the controller, a prompt via a user interface of the vehicle to an operator to manually implement the downshift of the transmission.
11 . The method of claim 8 , further comprising activating, by the controller, at least one of the following in response to determining the vehicle speed is greater than the requested vehicle speed:
an electromagnetic retarder,
a transmission retarder,
a parasitic load,
an engine brake, or
a regenerative braking system.
12 . The method of claim 11 , wherein the parasitic load is activated, and wherein the parasitic load includes at least one of an air conditioning compressor or a radiator fan.
13 . The method of claim 8 , further comprising:
receiving, by the controller, information ahead of the vehicle; and
determining, by the controller, that the vehicle is about to experience a negative road grade in a predefined distance based on the information ahead of the vehicle.
14 . The method of claim 8 , further comprising:
identifying, by the controller, an existing auxiliary brake fault; and
modifying, by the controller, the requested vehicle speed to a modified requested vehicle speed that is lower than the requested vehicle speed in response to identifying the existing auxiliary brake fault.
15 . A system comprising an automated driving system configured to enable autonomous operation of a vehicle, the system comprising:
a controller including one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
receive data regarding operation of an auxiliary brake system of the vehicle;
determine an auxiliary brake fault condition based on the received data regarding operation of the auxiliary brake system;
receive a requested vehicle speed from the automated driving system;
determine a vehicle speed is greater than the requested vehicle speed; and
control a transmission to downshift at least one setting relative to a current transmission setting.
16 . The system of claim 15 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to:
provide a prompt, via a user interface of the vehicle, to an operator to manually implement the downshift of the transmission.
17 . The system of claim 15 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to activate at least one of the following in response to determining the vehicle speed is greater than the requested vehicle speed:
an electromagnetic retarder,
a transmission retarder,
a parasitic load,
an engine brake, or
a regenerative braking system.
18 . The system of claim 15 , wherein the auxiliary brake system is an engine brake system.
19 . The system of claim 15 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to:
receive look ahead information; and
determine that the vehicle will experience a negative road grade in a predefined distance based on the look ahead information.
20 . The system of claim 15 , wherein the one or more memory devices store instructions thereon that, when executed by the one or more processors, further cause the one or more processors to:
identify an existing auxiliary brake fault; and
modify the requested vehicle speed to a modified requested vehicle speed that is lower than the requested vehicle speed in response to identifying the existing auxiliary brake fault.