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Control system for vehicle transmission

A transmission and vehicle technology, applied in the field of vehicle transmission control systems, can solve the problem of not being able to know which function or which functions to adjust

Active Publication Date: 2016-09-21
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because: When an estimate is found to deviate from a testable value, the estimate will need to adjust one or more nonlinear functions in the model, but it is not possible to know which function or functions need to be adjusted

Method used

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  • Control system for vehicle transmission
  • Control system for vehicle transmission
  • Control system for vehicle transmission

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Embodiment Construction

[0025] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0026] Figure 1A A schematic diagram of a powertrain 10 of a vehicle is shown, it being understood that the powertrain of a vehicle may include ratios in Figure 1A More or fewer parts than those shown. In this figure is shown a transmission 12 consisting of a torque converter 14 and a gearbox 16 and a differential indicated by FDR18, which stands for "Final Drive Ratio". The powert...

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Abstract

A control system for a transmission of a vehicle is provided, the control system including a controller configured to: output a first torque estimate for a particular value of a transmission parameter defined according to a non-linear function of the transmission parameter value. The controller also receives a measured transmission torque at a particular value of the transmission parameter and outputs an altered torque estimate for the particular value of the transmission parameter based on the measured torque.

Description

technical field [0001] The present invention relates to a control system and method for a vehicle transmission. Background technique [0002] Knowledge of the various torque values ​​within an automatic transmission is useful for many aspects of powertrain control. For example, knowledge of the input shaft torque and output shaft torque of a transmission gearbox is particularly useful for controlling the transmission to provide consistent and robust transmission shifts. Utilizing these torque signals along with input and output shaft speeds helps in accurately estimating individual clutch torques during a gear shift. One such control system and method is described in US Patent Application Publication No. US20100318269, filed August 23, 2010, which is incorporated herein by reference. [0003] Due to cost and other considerations, it is not always feasible to directly measure every torque within the transmission, so control system experts rely on various transmission models...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/02F16H59/14
CPCF16H59/14F16H59/16F16H61/02F16H2300/02F16H2059/148F16H2059/467F16H2059/147
Inventor 黛安娜·雅娜奇维夫藤井雄二格雷戈里·迈克尔·皮尔准恩亚历山大·奥康纳·吉布森约瑟夫·F·库查尔斯基尼姆罗德·卡帕斯
Owner FORD GLOBAL TECH LLC