Method and apparatus for vehicle accessory and load management
First Claim
1. A vehicle, comprising:
- a drivetrain system including an internal combustion engine and a geartrain, wherein the geartrain is disposed to transfer power originating from the internal combustion engine to vehicle wheels;
an accessory device being disposed to transform power originating from the drivetrain;
a route monitoring system disposed to determine a projected path for the vehicle; and
a controller, in communication with the powertrain system, the accessory device and the route monitoring system, the controller including a processor and memory including an instruction set, the instruction set executable to;
monitor a parameter associated with operation of the accessory device,monitor a request to operate the accessory device, andwhen the request to operate the accessory device includes a request to activate the accessory device based upon not exceeding a limit for the parameter that is associated with the operation of the accessory device;
determine a horizon for the vehicle based upon the projected path for the vehicle,determine a projected road load and a speed constraint based upon the horizon for the vehicle,determine a projected axle torque command based upon the projected road load and the speed constraint;
execute a first routine to determine a first command for operating the accessory device, wherein the first command for operating the accessory device is determined to minimize fuel consumption and meet the projected axle torque command; and
command operation of the accessory device based upon the first command.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle is described, and includes a drivetrain system including an internal combustion engine and a geartrain, an accessory device, and a route monitoring system. A controller includes an instruction set to monitor operation of the accessory device, and a request to operate the accessory device. When the request to operate the accessory device includes a request to activate the accessory device based upon not exceeding a limit for an operating parameter of the accessory device, the instruction set executes to determine a horizon for the vehicle based upon the projected path for the vehicle, determine a projected road load and a speed constraint based upon the horizon for the vehicle, and determine a projected axle torque command based upon the projected road load. A first routine determines a first command for operating the accessory device that minimizes fuel consumption and meets the projected axle torque command.
18 Citations
19 Claims
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1. A vehicle, comprising:
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a drivetrain system including an internal combustion engine and a geartrain, wherein the geartrain is disposed to transfer power originating from the internal combustion engine to vehicle wheels; an accessory device being disposed to transform power originating from the drivetrain; a route monitoring system disposed to determine a projected path for the vehicle; and a controller, in communication with the powertrain system, the accessory device and the route monitoring system, the controller including a processor and memory including an instruction set, the instruction set executable to; monitor a parameter associated with operation of the accessory device, monitor a request to operate the accessory device, and when the request to operate the accessory device includes a request to activate the accessory device based upon not exceeding a limit for the parameter that is associated with the operation of the accessory device; determine a horizon for the vehicle based upon the projected path for the vehicle, determine a projected road load and a speed constraint based upon the horizon for the vehicle, determine a projected axle torque command based upon the projected road load and the speed constraint; execute a first routine to determine a first command for operating the accessory device, wherein the first command for operating the accessory device is determined to minimize fuel consumption and meet the projected axle torque command; and command operation of the accessory device based upon the first command. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A vehicle, comprising:
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a drivetrain system including an internal combustion engine and a geartrain, wherein the geartrain is disposed to transfer power originating from the internal combustion engine to vehicle wheels; an accessory device coupled to the internal combustion engine; a route monitoring system disposed to determine a projected path for the vehicle; and a controller, in communication with the powertrain system, the accessory device and the route monitoring system, the controller including a processor and memory including an instruction set, the instruction set executable to; monitor a parameter associated with operation of the accessory device, monitor a request to operate the accessory device, when the request to operate the accessory device includes a request to activate the accessory device based upon not exceeding a limit for the parameter that is associated with the operation of the accessory device; determine a horizon for the vehicle based upon the projected path for the vehicle, wherein the horizon for the vehicle comprises an elapsed time at which operation of the vehicle can be projected, determine a projected road load and a speed constraint based upon the horizon for the vehicle, determine a projected axle torque command based upon the projected road load and the speed constraint; and execute a first routine to determine a first command for operating the accessory device, wherein the first command for operating the accessory device is determined to minimize fuel consumption and meet the projected axle torque command, and when the request to operate the accessory device includes a request to activate the accessory device based upon exceeding the limit for the parameter that is associated with operation of the accessory device; execute a second routine to determine a second command for operating the accessory device, wherein the second command for operating the accessory device is selected to achieve a maximum efficiency while maintaining the axle torque command at a constant level with the accessory power command greater than or equal to a desired accessory power. - View Dependent Claims (13)
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14. A method for operating an accessory device of a vehicle including a drivetrain system having an internal combustion engine and a geartrain, wherein the geartrain is disposed to transfer power originating from the internal combustion engine to vehicle wheels, and wherein the vehicle includes a route monitoring system being disposed to determine a projected path for the vehicle, the method comprising:
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monitoring via a controller a parameter associated with operation of the accessory device, monitoring a request to operate the accessory device, and when the request to operate the accessory device includes a request to activate the accessory device based upon not exceeding a limit for the parameter that is associated with the operation of the accessory device; determining a horizon for the vehicle based upon the projected path for the vehicle, determining a projected road load and a speed constraint based upon the horizon for the vehicle, determining a projected axle torque command based upon the projected road load and the speed constraint, executing a first routine via the controller to determine a first command for operating the accessory device, wherein the first command for operating the accessory device is determined to minimize fuel consumption and meet the projected axle torque command, and commanding, via the controller, operation of the accessory device based upon the first command. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification