Arrangement comprising a pin and a crank and turbocharger with such an arrangement

Patent metadata

Field	Value
Publication number	US-12203408-B2
Application number	US-202318351678-A
Country	US
Kind code	B2
Filing date	Jul 13, 2023
Priority date	Jan 20, 2021
Publication date	Jan 21, 2025
Grant date	Jan 21, 2025

Abstract

An assembly is provided including a pin and a crank. The crank has a hole in which a connecting region of the pin is fixed by an interference fit to connect the pin and the crank. The hole has a substantially circular cross-section and the connecting portion has a circular cross-section. The cross-section of the hole deviates from the circular shape at one or more places and is larger at any such locations than the cross-section of the connecting portion.

First claim

We claim:

1. An arrangement comprising:
a pin having a connecting portion; and
a crank having a hole that receives the connecting portion to connect the pin and the crank,
wherein a cross-section of the hole has a substantially circular shape but deviates from the circular shape at one or more places and is larger at the one or more places than a cross-section of the connecting portion,
wherein when the pin is in a first configuration positioned outside the hole, the connecting portion has a cross-section defined by a first shape, and
wherein when the pin is in a second configuration positioned within the hole, the connecting portion has a cross-section defined by a second shape that is different from the first shape.

2. The arrangement according to claim 1 , wherein the cross-section of the hole deviates from the circular shape at two or more opposite places, and is larger than the cross-section of the connecting portion at the two or more opposite places.

3. The arrangement according to claim 1 , wherein the one or more deviations of the hole from the circular shape is formed by a recess in a material of the crank surrounding the hole in the crank.

4. The arrangement according to claim 1 , wherein the wall of the crank defining the hole in the crank follows a circular line, except at the one or more places where the cross-section of the hole deviates from the circular shape.

5. The arrangement according to claim 4 , wherein the wall of the crank defining the hole is free of corners or edges.

6. The arrangement according to claim 5 , wherein changes of direction of the wall of the crank defining the hole are free of edges and corners.

7. A turbocharger comprising:
at least one charge air valve having an air flow adjusting element,
an actuator for adjusting the charge air valve, and
an arrangement according to claim 1 , wherein the actuator and the adjusting element are connected to each other via the arrangement so that the actuator drives the adjusting element to adjust the charge air valve or the air flow by the arrangement.

8. The turbocharger according to claim 7 , wherein the actuator has an output shaft connected to the crank of the arrangement and with which the crank is driven.

9. The turbocharger according to claim 8 , wherein the pin of the arrangement is connected to a lever or link and the lever or link is driven by the pin.

10. The turbocharger according to claim 9 , wherein the lever or link is connected to the air flow adjusting element of the charge air valve to drive the air flow adjusting element of the charge air valve.

Assignees

• Hella Gmbh & Co Kgaa

Inventors

• Birou Florin Daniel
• Ionica Dorin Alexandru
• Rita Alexandru

Classifications

• F16C2360/24

  Turbochargers · CPC title

• F16C3/18

  Eccentric-shafts · CPC title

• F16C2226/12

  by press-fit, e.g. plug-in · CPC title

• F16C3/023

  made of several parts, e.g. by welding · CPC title

• F16C3/22

  Cranks; Eccentrics (constructional features of crank-pins F16C11/02) · CPC title