System and method for operating a hybrid vehicle

A hybrid vehicle and power technology, applied in the direction of hybrid vehicles, motor vehicles, vehicle parts, etc.

Inactive Publication Date: 2013-01-02
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Certain driving conditions, such as the steep inclines and descents some...

Method used

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  • System and method for operating a hybrid vehicle
  • System and method for operating a hybrid vehicle
  • System and method for operating a hybrid vehicle

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Embodiment Construction

[0016] Referring to the drawings, in which like reference numerals are used to identify similar or identical components in the several views, figure 1 A hybrid vehicle 10 is schematically shown having a primary power source 20 , an auxiliary power source 22 and a control system 24 . As used herein, a "hybrid vehicle" broadly includes any vehicle having two or more sources of power that may be used for vehicle propulsion purposes. Some examples of suitable hybrid vehicles include, but are not limited to, hybrid electric vehicles (HEV), plug-in hybrid electric vehicles (PHEV), extended-range electric vehicles (EREV), two-mode hybrids, full hybrids, power-assist hybrids Electric, mild hybrid, series hybrid, parallel hybrid, series-parallel hybrid, power split hybrid, BAS or BAS-plus hybrid, hydro hybrid, pneumatic hybrid, or any other type of hybrid vehicle . This includes passenger cars, cross-over vehicles, sport utility vehicles, recreational vehicles, trucks, buses, commerc...

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Abstract

A method of modifying the charging target for the state-of-charge (SOC) of a hybrid vehicle battery in response to a sudden power draw includes determining that the hybrid vehicle has entered a steep grade environment, adjusting a power management scheme of the hybrid vehicle from a standard charging mode to an aggressive charging mode, and operating the hybrid vehicle operated using the adjusted power management scheme. The charging target may include both an immediate charging target and an ultimate charging target, where the immediate charging target is less than the ultimate charging target, and where adjusting a power management scheme from a standard charging mode to an aggressive charging mode includes increasing the immediate charging target.

Description

technical field [0001] The present invention relates generally to hybrid vehicles, and more particularly to methods for operating hybrid vehicles in hilly or other environments where roads have significant grades or slopes. Background technique [0002] Some hybrid vehicles use a primary power source for the vehicle's primary propulsion needs, and an auxiliary power source to supplement the propulsion needs when needed. Certain driving conditions, such as the steep inclines and descents sometimes found on mountain roads, can present unique challenges to hybrid vehicles. [0003] For example, when a hybrid vehicle attempts to climb a mountain road with a significant grade, the electric motor can drain or at least reduce the charge stored in the bulk battery. If the state of charge of the battery drops below a certain threshold, a hybrid vehicle may have to rely on the internal combustion engine to provide supplemental propulsion. In order to accomplish this without causing ...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W10/26B60W10/08
CPCB60W2550/142B60W50/082B60W20/108B60W10/26B60W40/076B60W20/00B60W10/08B60W2710/244B60W20/15B60W2552/15
Inventor B.P.巴塔莱K.A.迪特里希D.W.赖特K.Y.金
Owner GM GLOBAL TECH OPERATIONS LLC
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