TEMPERATURE-BASED EMISSIONS STABILITY FLAG FOR HYBRID TORQUE HANDOFF

A system and method to implement a torque handoff between and electric machine and an internal combustion engine in a motor vehicle are provided. To implement the torque handoff without undue delay, temperature of the exhaust gas is taken into consideration to determine whether an emissions stabilit...

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Bibliographische Detailangaben
Hauptverfasser: WENDLING TIMOTHY, DIMOSKI DANIEL S, HANNON BRIAN P
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:A system and method to implement a torque handoff between and electric machine and an internal combustion engine in a motor vehicle are provided. To implement the torque handoff without undue delay, temperature of the exhaust gas is taken into consideration to determine whether an emissions stability criterium is met for handing off torque, and if the emissions stability criterium is met, the system and method are configured to handoff torque from the electric machine to the internal combustion engine. When the exhaust gas is sufficiently warm, it may be determined that the engine is operatingwith sufficiently low levels of hydrocarbons in accordance with emissions regulations, such that torque handoff may be made with confidence of maintaining emissions standards. 提供了一种用于在机动车辆中的电机与内燃发动机之间执行扭矩传递的系统和方法。为了在没有不适当延迟的情况下执行扭矩传递,考虑排气的温度以判定是否符合排放稳定性标准以便进行传递扭矩,并且如果符合排放稳定性标准该系统和方法配置为将扭矩从电机传递到内燃发动机。当排气足够热时,可判定根据排放法规发动机正在用足够低水平的烃化合物而工作,因而可在确保继续符合排放标准的情况下完成扭矩传递。