Transmission systems to control heat exchangers to manage transmission sump temperature
AssigneeAllison Transmission, Inc.
InventorsJeffrey E. Shultz, Bruno Re
Life of this patent
Estimating the term…
Abstract
Transmission systems, control systems for vehicles, and methods of operating vehicles are disclosed herein. A transmission system for a vehicle includes a transmission and a heat exchanger. The transmission is configured to receive rotational power supplied by a drive unit and provide the rotational power to a load in use of the transmission system. The heat exchanger is fluidly coupled to the transmission and configured to cool a sump of the transmission to manage transmission oil temperature in use of the transmission system. The transmission includes a control system having a plurality of sensors and a controller coupled to the plurality of sensors that has a processor and a memory device coupled to the processor.
Claims19
A transmission system for a vehicle, the transmission system comprising:
- a transmission configured to receive rotational power supplied by a drive unit and provide the rotational power to a load in use of the transmission system;
- and
- a heat exchanger fluidly coupled to the transmission and configured to cool a sump of the transmission to manage transmission oil temperature in use of the transmission system,
- wherein the transmission includes a control system having a plurality of sensors and a controller coupled to the plurality of sensors that has a processor and a memory device coupled to the processor, wherein the plurality of sensors include a first brake sensor configured to provide brake sensor data indicative of a state of a first braking device of the vehicle and a fault diagnostic sensor configured to provide fault diagnostic data indicative of a fault state of the vehicle, and wherein the memory device has instructions stored therein that are executable by the processor to cause the processor to receive the brake sensor data from the first brake sensor and the fault diagnostic data from the fault diagnostic sensor and to selectively cool the sump by the heat exchanger based on the brake sensor data and the fault diagnostic data to promote fuel economy in use of the transmission system.
A control system for a vehicle that includes a transmission configured to receive rotational power supplied by a drive unit and provide the rotational power to a load and a heat exchanger fluidly coupled to the transmission and configured to cool a sump of the transmission to manage transmission oil temperature, the control system comprising:
- a first brake sensor configured to provide brake sensor data indicative of a state of a first braking device of the vehicle;
- a fault diagnostic sensor configured to provide fault diagnostic data indicative of a fault state of the vehicle;
- and
- a controller communicatively coupled to the first brake sensor and the fault diagnostic sensor, wherein the controller includes a memory device having instructions stored therein that are executable by a processor to cause the processor to receive the brake sensor data from the first brake sensor and the fault diagnostic data from the fault diagnostic sensor and to selectively cool the sump by the heat exchanger based on the brake sensor data and the fault diagnostic data to promote fuel economy in use of the control system.
A method of operating a vehicle that includes a transmission configured to receive rotational power supplied by a drive unit and provide the rotational power to a load and a heat exchanger fluidly coupled to the transmission and configured to cool a sump of the transmission to manage transmission oil temperature, the method comprising:
- receiving, by a controller of the vehicle, brake sensor data provided by a first brake sensor of the vehicle that is indicative of a state of a first braking device of the vehicle;
- receiving, by the controller, fault diagnostic data provided by a fault diagnostic sensor of the vehicle that is indicative of a fault state of the vehicle;
- and
- selectively cooling, by the controller using the heat exchanger, the sump based on the brake sensor data and the fault diagnostic data to promote fuel economy in use of the vehicle.
Dependencies are inferred from the claim text.