Hybrid vehicle drive method and related device

By calculating the powertrain efficiency and universal characteristics of hybrid electric vehicles, the engine output power and torque are optimized, solving the problem of selecting the most economical driving mode and improving the overall fuel economy of the vehicle.

CN116001769BActive Publication Date: 2026-06-09SAIC GM WULING AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SAIC GM WULING AUTOMOBILE CO LTD
Filing Date
2023-02-07
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies have not been able to effectively solve the problem of how to select the most economical driving mode, engine power, and torque for hybrid vehicles under different operating conditions.

Method used

By calculating the powertrain efficiency in parallel drive mode, the most efficient drive mode is selected, and the engine output power and torque are determined based on the universal characteristics of the powertrain, thereby optimizing the vehicle's fuel economy.

Benefits of technology

It improves the overall fuel economy of the vehicle, overcomes the problem in existing technologies where the engine's optimal output point does not match the vehicle's optimal point due to relying solely on the engine's universal characteristics, and reduces fuel consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to the field of automobile, especially to a hybrid electric vehicle driving method and related equipment, wherein the method comprises: determining whether the current driving mode is parallel driving; if yes, calculating the first powertrain efficiency corresponding to parallel direct drive mode, the second powertrain efficiency corresponding to parallel charging mode and the third powertrain efficiency corresponding to discharging torque compensation mode under the current working condition based on the energy transmission efficiency between each component in the powertrain; determining the driving mode corresponding to the maximum value of the first powertrain efficiency, the second powertrain efficiency and the third powertrain efficiency as the driving mode of the hybrid electric vehicle; if the driving mode is the parallel charging mode or the discharging torque compensation mode, determining the output power of the corresponding engine and the engine torque according to the universal characteristic of the powertrain.
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