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Method and apparatus to reprofile input speed during speed phase during constrained conditions for a hybrid powertrain system

A technology of input speed and powertrain, applied in the direction of power unit, electric power unit, hybrid vehicle, etc., can solve the problem of reducing the influence of shifting maneuverability and other problems

Active Publication Date: 2012-10-10
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Orderly management of output torque variations reduces the impact of shifting on drivability when output torque variations or interruptions due to clutch unloading versus loading are a normal part of transmission operating range state transitions

Method used

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  • Method and apparatus to reprofile input speed during speed phase during constrained conditions for a hybrid powertrain system
  • Method and apparatus to reprofile input speed during speed phase during constrained conditions for a hybrid powertrain system
  • Method and apparatus to reprofile input speed during speed phase during constrained conditions for a hybrid powertrain system

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Embodiment Construction

[0030] Turning now to the drawings, the objects shown therein are only intended to illustrate certain exemplary embodiments of the invention and are not intended to limit the scope of protection. figure 1 with figure 2 Indicates a typical electric-mechanical hybrid powertrain. A typical electro-mechanical hybrid powertrain according to the invention is figure 1 As shown in , a dual-mode, compound split electro-mechanical hybrid transmission 10 including a first electric machine 56 ('MG-A') and a second electric machine 72 ('MG-B') operably connected to an engine 14 . The engine 14 and the first and second electric machines 56 and 72 each generate power that can be transmitted to the transmission 10 . The power generated by the engine 14 and the first and second electric machines 56 and 72 and transmitted to the transmission 10 is described as input torque, referred to herein as T I , T A and T B , and the speeds are called N I , N A and N B .

[0031] A typical en...

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Abstract

The invention provides a method and apparatus for a hybrid powertrain system, used for reprofiling the input acceleration profiles in a speed period under constraint condition . A method to control a powertrain including a transmission, an engine, and an electric machine includes monitoring an input speed, monitoring an output speed, upon initiation of a transmission shift, determining a plurality of input acceleration profiles for controlling the engine and electric machine during the shift, identifying an input acceleration constraint affecting one of the input acceleration profiles, reprofiling the input acceleration profiles based upon the identified input acceleration constraint, and controlling operation of the engine and electric machine based upon the reprofiled input acceleration profiles.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application Serial No. 60 / 984,957, filed November 2, 2007, which is hereby incorporated by reference in its entirety. technical field [0003] The present application relates to control systems for electro-mechanical transmissions. Background technique [0004] The statements in this section merely provide background information related to the present application and may not constitute prior art. [0005] Known powertrain architectures include torque-generative devices, including internal combustion engines and electric machines, that transmit torque through a transmission to an output member. A typical powertrain includes a dual-mode, compound split electro-mechanical transmission and an output member, wherein the transmission utilizes an input member to receive drive torque from a prime mover power source, preferably an internal combustion engine. The output me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/00B60W10/10B60W10/06B60W10/08B60W10/02F16H61/00
CPCY02T10/6239Y02T10/6286F16H2037/102F16H61/0204F16H2061/6603B60W10/06F16H2037/0866F16H2037/106B60K6/365B60K6/445B60W20/00F16H63/502B60W10/115B60K1/02F16H2302/00F16H2037/104B60W30/19B60W10/08Y02T10/62B60W20/40
Inventor L·A·卡明斯基J·-J·F·萨
Owner GM GLOBAL TECH OPERATIONS LLC
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