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Variable cam timing phaser

Inactive Publication Date: 2022-06-16
BORG WARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a way to make a variable cam timing phaser for an engine quickly and inexpensively. It does this by using a rotor with a special tab that fits into a retention channel in the trigger plate. This makes it easy to create the assembly and adjust the timing of the engine's camshaft.

Problems solved by technology

However, use of threaded fasteners such as bolts to attach conventional trigger wheels results in lengthy and expensive manufacturing of the variable cam timing phaser.

Method used

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  • Variable cam timing phaser
  • Variable cam timing phaser
  • Variable cam timing phaser

Examples

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Embodiment Construction

[0013]With reference to the Figures, wherein like numerals indicate like parts throughout the several views, a variable cam timing phaser 10 includes a stator 12 extending circumferentially about an axis A and an assembly 14 for the variable cam timing phaser 10 is shown in FIG. 1. The assembly 14 includes a rotor 16 extending circumferentially about the axis A. The rotor 16 is disposed within the stator 12. As shown in FIGS. 2 and 4, the rotor 16 has a rotor interior surface 18 defining a bore 20 completely therethrough. The rotor 16 also has a surface 22 extending radially away from the axis A and perpendicular to the rotor interior surface 18. The rotor 16 further has a retention tab 24 integral with the surface 22. The retention tab 24 extends axially away from the surface 22. As shown in FIG. 1, the assembly 14 further includes a control valve 26 disposed within the bore 20 of the rotor 16. Moreover, as shown in FIGS. 3 and 5, the assembly 14 further includes a trigger plate 28...

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PUM

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Abstract

An assembly for a variable cam timing phaser includes a rotor extending circumferentially about an axis. The rotor has a rotor interior surface defining a bore completely therethrough and configured to receive a control valve, has a surface extending radially away from the axis and perpendicular to the rotor interior surface, and has a retention tab integral with the surface and extending axially away from the surface. The assembly further has a trigger plate coupled to the rotor, with the trigger plate defining a retention channel completely therethrough. The retention tab of the rotor is disposed in the retention channel of the trigger plate.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The subject patent application claims priority to and all the benefits of U.S. Provisional Patent Application No. 63 / 272,429, which was filed on Oct. 27, 2021, which is herein incorporated by reference in its entirety.BACKGROUND OF THE INVENTION1. Field of the Invention[0002]The present invention relates generally to an assembly for a variable cam timing phaser.2. Description of the Related Art[0003]Conventional variable cam timing systems include a camshaft and a variable cam timing phaser configured to advance or retard a phase of the camshaft. Conventional variable cam timing phasers include a stator and a rotor disposed within the stator, with the rotor define a bore configured to receive a control valve. Conventional variable cam timing phasers further include a trigger plate used to monitor a rotational position (i.e., angle) of the camshaft during operation of the variable cam timing system. Typically, the trigger wheel is attached...

Claims

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Application Information

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IPC IPC(8): F01L1/344
CPCF01L1/344F01L1/3442F01L2001/34433
Inventor KENYON, BRIANPENNIMAN, ERIC
Owner BORG WARNER INC