Method for controlling a hybrid powertrain for a motor vehicle

CN115916568BActive Publication Date: 2026-08-28MERCEDES BENZ GRP
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Patent Information

Application Number
CN202180043381.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-06-17
Filing Date
2021-06-02
Publication Date
2026-08-28
Estimated Expiration
2041-06-02

AI Technical Summary

Benefits of technology

[0018]在本发明中，所述极限力矩或极限力矩特性曲线可以被直接确定。但所述极限力矩或极限力矩特性曲线也可以被间接确定，即，通过确定与极限力矩物理关联的其它参数。

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Abstract

The invention relates to a method for controlling a hybrid powertrain (10) for a motor vehicle, wherein the hybrid powertrain (10) comprises an internal combustion engine (12), an electric machine (14), a hybrid transmission (16) and a drive wheel, wherein the hybrid transmission (16) has several shift elements (S1; S2; S3; S4) by means of which at least a first gear stage (G1c), a second gear stage (G2) and a third gear stage (G3) can be assumed, wherein the transmission ratio between the crankshaft of the internal combustion engine (12) and the output shaft (AW) of the hybrid transmission continuously decreases from the first gear stage (G1c) via the second gear stage (G2) to the third gear stage (G3), wherein a third limit torque (G3R) for the third gear stage (G3) is set in a first mode and a second limit torque (G2H) for the second gear stage (G2) is set in a second mode when operating in such a way that both the internal combustion engine (12) and the electric machine (14) transmit a drive torque into the hybrid transmission for driving the drive wheel, wherein the maximum third limit torque (G3Rm) of the first mode is greater than the maximum second limit torque (G2Hm) of the second mode.
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Citation Information

Patent Citations

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    DE102009021456A1

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    DE102013005252A1

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    DE102017006082A1

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    US20190061737A1

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