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Torque converter clutch dynamic control

A torque converter clutch, dynamic control technology, applied in transmission control, transmission, fluid transmission, etc., can solve problems such as accelerating vehicles

Active Publication Date: 2009-09-09
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the current vehicle speed exceeds the desired vehicle speed and a downshift is entered, the engine will remain at a low RPM and lockup will prevent the torque converter from effectively accelerating the vehicle

Method used

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  • Torque converter clutch dynamic control
  • Torque converter clutch dynamic control
  • Torque converter clutch dynamic control

Examples

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Embodiment Construction

[0016] The following is merely exemplary in nature and does not limit the disclosure, practice or application of the invention. The same or related reference numerals in the drawings indicate the same or related components and technical features. The term module is used herein to refer to: an application-specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated or grouped) and memory for executing one or more software or firmware programs, a combinational logic circuit And / or other suitable elements that provide the described functionality.

[0017] figure 1 A vehicle 10 is shown including a conventional torque converter system. The engine 12 generates drive torque by combusting a mixture of air and fuel. Air enters an intake manifold 14 through a throttle valve 16 . Throttle valve 16 regulates mass air flow into intake manifold 14 . Air within the intake manifold 14 is distributed to the cylinders 18 . Although six cylinders 18 are shown,...

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Abstract

The present invention provides a method of dynamically controlling pressure to a torque converter clutch (TCC) of a torque converter coupled to a transmission. The method includes: monitoring throttle position; monitoring engine speed; controlling pressure to the torque converter clutch for increased slip after throttle position indication has abruptly occurred and when engine speed is low; adjusting transmission steady state for the transmission At least one of pressure for the torque converter and pressure for the torque converter to maintain increased slip; and controlling pressure to the torque converter to reduce slip by engaging the torque converter clutch.

Description

technical field [0001] The present invention relates to systems and methods for controlling torque converter clutches. Background technique [0002] This section only provides background information related to the present invention and may not constitute prior art to the present invention. [0003] Automatic transmissions transfer engine torque from the engine to the transmission through a hydraulic clutch called a torque converter. The torque converter works by hydraulic pressure provided by pressurized fluid from the automatic transmission. The torque converter amplifies engine torque and directs it through the transmission. [0004] A conventional torque converter includes a sealed chamber filled with hydraulic fluid. The chamber includes a pump wheel (or impeller) driven by the engine, a turbine connected to the output shaft, and a guide wheel for increasing torque. As the impeller rotates, centrifugal force causes the pressurized fluid to flow outward, which turns t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/14F16H59/14F16H59/18F16H59/68
CPCF16H61/143F16H59/141F16H59/24F16H63/50F16H2061/145F16H59/36F16H2059/366
Inventor V·霍尔茨J·西菲尔特L·托圣特R·卡斯特兰C·J·特拉什
Owner GM GLOBAL TECH OPERATIONS LLC