IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0324173
(2011-12-13)
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등록번호 |
US-8602142
(2013-12-10)
|
발명자
/ 주소 |
- Books, Martin
- Muralidhar, Praveen
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
7 |
초록
▼
A method, apparatus, and system are disclosed for hybrid power system braking. In one embodiment, a vehicle weight input is received by a brake controller. In response to receiving the vehicle weight input, a maximum negative braking torque is determined. Regulation of negative braking torque accord
A method, apparatus, and system are disclosed for hybrid power system braking. In one embodiment, a vehicle weight input is received by a brake controller. In response to receiving the vehicle weight input, a maximum negative braking torque is determined. Regulation of negative braking torque according to vehicle weight is accomplished by one or both of a regenerative braking device and mechanical braking device.
대표청구항
▼
1. A method, comprising: receiving a vehicle weight input from a vehicle operator selector; in response to receiving the vehicle weight input, determining a maximum negative braking torque trajectory; and limiting negative braking torque of the vehicle without friction braking to the maximum negativ
1. A method, comprising: receiving a vehicle weight input from a vehicle operator selector; in response to receiving the vehicle weight input, determining a maximum negative braking torque trajectory; and limiting negative braking torque of the vehicle without friction braking to the maximum negative braking torque trajectory in response to a deceleration request. 2. The method of claim 1, wherein the vehicle operator selector includes a plurality of vehicle weight selections and further comprising, in response to the vehicle weight input, adjusting the maximum negative braking torque trajectory. 3. The method of claim 1, wherein the deceleration request is received from at least determining an accelerator pedal position. 4. The method of claim 1, wherein limiting negative braking torque further comprises dissipating electrical energy with a device selected from the group of devices consisting of motors, generators, and combined motor/generators. 5. The method of claim 1, wherein limiting negative braking torque further comprises dissipating mechanical energy with a mechanical energy storage device. 6. The method of claim 1, further comprising manually changing the vehicle weight input with the vehicle operator selector. 7. The method of claim 1, further comprising determining the maximum negative braking torque trajectory from a negative torque braking schedule of negative torque trajectories that vary according to vehicle weight. 8. The method of claim 1, wherein limiting negative braking torque includes generating a regenerative braking command and a mechanical braking command that are limited by the maximum negative braking torque trajectory. 9. A method, comprising: operating a vehicle having a drive system, the vehicle performing intermittent deceleration; receiving a vehicle weight input from a vehicle operator selector; receiving a deceleration input; in response at least in part to the vehicle weight input, determining a maximum negative braking torque; and in response to the deceleration input, limiting negative braking torque without friction braking to the maximum negative braking torque while decelerating the vehicle and converting a portion of kinetic energy of the drive system into stored energy. 10. The method of claim 9, wherein the deceleration input is received from determining an accelerator pedal position. 11. The method of claim 9, further comprising determining the maximum negative braking torque from a negative torque braking schedule of negative torque trajectories that vary according to vehicle weight. 12. The method of claim 9, wherein the vehicle operator selector is located in a cab of the vehicle. 13. The method of claim 9, wherein limiting negative braking torque includes generating a regenerative braking command and a mechanical braking command to decelerate the vehicle. 14. An apparatus, comprising: a controller structured to receive a vehicle weight input; means for determining a maximum negative braking torque in response to the vehicle weight input; and means for limiting negative braking torque without friction braking to the maximum negative braking torque upon receipt of a deceleration request signal. 15. The apparatus of claim 14, further comprising means for adjusting the maximum negative braking torque in response to a change in the vehicle weight input. 16. A system, comprising: a powertrain including an internal combustion engine and an electrical device; a controller in communication the engine and the electrical device structured to receive a vehicle weight signal, the controller further comprising: a negative torque module structured to receive a deceleration request signal; a target negative braking torque trajectory module structured to determine a maximum negative braking torque trajectory without friction braking in response to the vehicle weight signal; and a regeneration module structured to provide a regenerative braking torque and a mechanical braking torque that are limited by the maximum negative braking torque trajectory; and a braking control module structure to provide a regenerative braking command and a mechanical braking command based on the regenerative braking torque and the mechanical braking torque; wherein the electrical device is responsive to the regenerative braking command to dissipate electrical energy during deceleration. 17. The system of claim 16, wherein the internal combustion engine is a diesel engine and the electrical device is a motor/generator. 18. The system of claim 16, wherein the electrical device is operably coupled to an electrical energy storage device selected from the group of electrical energy storage devices consisting of lithium ion batteries, lead-acid batteries, and a nickel metal hydride batteries. 19. The system of claim 16, further comprising a system capability module structured to receive a regenerative braking capacity and a mechanical system braking capacity, wherein the regenerative braking command is limited to the minimum of the regenerative braking capacity and the maximum negative braking torque trajectory. 20. The system of claim 16, further comprising a manually operable vehicle weight selector structured to provide the vehicle weight signal. 21. The system of claim 20, wherein the powertrain comprises a portion of a vehicle with a cab for an operator of the vehicle, and vehicle weight selector is located in the cab of the vehicle.
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