Method and system for engine torque control

Abstract

Methods and systems are provided for improving vehicle torque control accuracy. Data points of an engine torque data set are adjusted en masse by an on-board vehicle controller while also being adjusted individually by an off-board controller. By adjusting engine operation based on a torque data set that is updated by each of the on-board and off-board controllers, engine torque errors can be reliably determined and compensated for.

Description

【Technical field】 [0001] The present invention relates to systems and methods for providing more precise torque control. 【Background technique】 [0002] Engine control systems may use various torque estimation methods (e.g., output from one or more torque sensors) in combination with various torque control methods (e.g., adaptive open-loop and closed-loop control methods) to provide reliable torque estimation and actuation ). In particular, such control systems aim to improve torque accuracy by combining reliable engine torque output measurement with adaptive loop correction. [0003] However, the inventors herein have recognized potential problems with this approach. As one example, engine torque measurements may not give enough information in raw form to accurately correct features of the multiple degrees of freedom of the control system that affect engine torque. For example, an error between the torque produced by the engine and the torque commanded through the engine...

AI Technical Summary

Problems solved by technology

However, such analysis methods can be computation intensive

The processing power and storage required for such analysis methods may not be met by the control systems currently deployed on vehicles

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