Heat isolating VTG lever and linkage
AssigneeBorgWarner Inc.
InventorsGeorge Edward Heddy, III, Brian Edward Handlon
Life of this patent
Estimating the term…
Abstract
A heat isolating linkage (5) that includes an elongate link having first and second end portions (10, 12) and a middle portion (14) extending therebetween. A bearing opening (16) is formed in the first end portion (10) and a bearing race (18) is disposed in the bearing opening (16). A rod end ball (20) is disposed in the bearing race (18). At least one aperture (30-36) is formed through the middle portion (14). The middle portion (14) may include a plurality of apertures (30-36) each in the form of a rectangle that forms a ladder pattern. Accordingly, the middle portion (14) has a cross sectional area (A2) that is smaller than the cross sectional area of at least one of the first and second end portions (A1, A3).
Claims8
A heat isolating turbocharger VTG lever, comprising:
- a one-piece elongate member having first and second end portions and a middle portion extending therebetween;
- a rod end ball located at the first end portion;
- a bearing race secured in the first end portion and disposed around the rod end ball;
- a VTG actuation shaft clamp formed in the second end portion;
- and
- at least one aperture formed through the middle portion,
- whereby the middle portion has a cross sectional area that is smaller than the cross sectional area of at least one of the first and second end portions, whereby heat transfer along the elongate member is inhibited such that it protects the bearing race from excessive heat when the second end portion is exposed to heat.
Dependencies are inferred from the claim text.