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Method for position control and calibration of an actuator shaft for an electric phaser

A phaser and control ground technology, applied to non-mechanically actuated valves, machines/engines, valve devices, etc., can solve the problem of increasing the cost of motor initialization

Inactive Publication Date: 2019-01-01
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the disclosed configuration is suitable for the intended purpose, the complexity of the sensor configuration increases the cost of the motor and potentially causes problems with the simplicity of the components and / or initialization of the assembled motor system

Method used

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  • Method for position control and calibration of an actuator shaft for an electric phaser
  • Method for position control and calibration of an actuator shaft for an electric phaser
  • Method for position control and calibration of an actuator shaft for an electric phaser

Examples

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Embodiment Construction

[0019] now refer to Figure 1-Figure 3C , shows an apparatus and method for controlling the angular position of a camshaft 12 in an internal combustion engine having a camshaft phaser 14 for controllably varying the phase relationship between the engine crankshaft and the camshaft. The camshaft phaser 14 may be actuated by an electric motor 16 having an actuator shaft 18 operated by a gear reduction drive train 20 having a fixed adjusting member 22 that is required for a phase change Rotate to adjust. The method may comprise the steps of: generating a signal by the sensor 30 corresponding to the angular position of the fixed adjustment member 22 of the gear reduction drive train 20; and adjusting the camshaft by the operation of the electric motor 16 by the engine control unit 40 based on the generated signal 12 to rotate the fixed adjustment member 22, the signal generated corresponds to the angular position of the fixed adjustment member 22. Such as figure 2 As shown, th...

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PUM

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Abstract

An apparatus (10) and method for controlling the angular position of a camshaft (12) in an internal combustion engine having a camshaft phaser (14) for controllably changing the crankshaft of the internal combustion engine and camshaft (12). The camshaft phaser (14) may be actuated by an electric motor (16) having an actuator shaft (18) operated through a gear reduction drive train (20) having a fixed adjustment member (22), which The fixed adjustment member (22) rotates when phase change adjustment is required. A sensor (30) may generate a signal corresponding to the angular position of the stationary adjustment member (22) of the gear reduction drive train (20). The engine control unit (40) may adjust the position of the camshaft (12) through operation of the electric motor (16) to rotate the stationary adjustment member (22) based on the generated signal corresponding to the stationary adjustment member (22) angular position.

Description

technical field [0001] The present invention relates to detecting the position of a camshaft in an internal combustion engine including an electrically variable cam phaser, and more particularly to a position control system and calibration method for an actuator shaft of an electrically operated cam phaser with a feedback loop. Background technique [0002] The operation of an electric phaser for a cam phasing system is such that the sun gear or planet carrier is fixed and the ring gear and other components rotate with the camshaft, which is driven by the crankshaft through a system of gears, belts or chains. One control method is to use a first position sensor mounted on the crankshaft and a second position sensor mounted on the camshaft. After the cam is rotated, the angular position of the cam can be calculated by an electronic control unit (ECU), and a signal can be sent to move the stationary member, thereby adjusting the phaser angle of the cam, see eg US Patent No. 5,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/34F01L13/00F01L1/047F01L9/20
CPCF01L1/352F01L2013/103F01L2250/02F01L2250/04F01L2250/06F01L2800/09F01L2820/041F01L2820/042F01L9/20F01L1/047F01L1/344
Inventor R·T·辛普森
Owner BORGWARNER INC