Piston cooling crankshaft

Patent metadata

Field	Value
Publication number	US-10690185-B2
Application number	US-201816168339-A
Country	US
Kind code	B2
Filing date	Oct 23, 2018
Priority date	Oct 23, 2018
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

A crankshaft including a plurality of journals, a plurality of crank pins; and a plurality of crank webs connecting select ones of the plurality of journals with select ones of the plurality of crank pins. One or more of the plurality of crank webs includes at least one radially outwardly exposed surface a plurality of cooling features formed thereon.

First claim

What is claimed is:

1. A crankshaft comprising:
a plurality of journals;
a plurality of crank pins; and
a plurality of crank webs connecting select ones of the plurality of journals with select ones of the plurality of crank pins, one or more of the plurality of crank webs including at least one radially outwardly exposed surface having a plurality of cooling features formed thereon, wherein the plurality of cooling features is defined by a plurality of grooves formed in the at least one radially outwardly exposed surface.

2. The crankshaft according to claim 1 , wherein the grooves extend parallel to an axis of rotation of the crankshaft.

3. The crankshaft according to claim 1 , wherein the at least one radially outwardly exposed surface includes a first radially outwardly exposed surface and a second, opposing radially outwardly exposed surface, the first radially outwardly exposed surface including a first plurality of cooling features formed thereon and the second radially outwardly exposed surface including a second plurality of cooling features formed thereon.

4. The crankshaft according to claim 1 , wherein each of the plurality of grooves includes a width of between about 1 mm and about 3 mm.

5. The crankshaft according to claim 1 , wherein each of the plurality of grooves includes a depth of between about 1 mm and about 3 mm.

6. The crankshaft according to claim 1 , wherein a spacing between a first edge of one of the plurality of grooves and a first edge of an adjacent groove is between about 3 mm and about 5 mm.

7. A motor vehicle comprising:
a vehicle body defining, at least in part, an occupant compartment;
an internal combustion engine mounted in the vehicle body, the internal combustion engine including a crankshaft comprising:
a plurality of journals;
a plurality of crank pins; and
a plurality of crank webs connecting select ones of the plurality of journals with select ones of the plurality of crank pins, one or more of the plurality of crank webs including at least one radially outwardly exposed surface having a plurality of cooling features formed thereon, wherein the plurality of cooling features is defined by a plurality of grooves formed in the at least one radially outwardly exposed surface.

8. The motor vehicle according to claim 7 , wherein the grooves extend parallel to an axis of rotation of the crankshaft.

9. The motor vehicle according to claim 7 , wherein the at least one radially outwardly exposed surface includes a first radially outwardly exposed surface and a second, opposing radially outwardly exposed surface, the first radially outwardly exposed surface including a first plurality of cooling features formed thereon and the second radially outwardly exposed surface including a second plurality of cooling features formed thereon.

10. The motor vehicle according to claim 7 , wherein each of the plurality of grooves includes a width of between about 1 mm and about 3 mm.

11. The motor vehicle according to claim 7 , wherein each of the plurality of grooves includes a depth of between about 1 mm and about 3 mm.

12. The motor vehicle according to claim 7 , wherein a spacing between a first edge of one of the plurality of grooves and a first edge of an adjacent groove is between about 3 mm and about 5 mm.

13. A crankshaft for an internal combustion engine (ICE) comprising:
a plurality of crank webs, each having a first end, and a second end; and
a plurality of cooling features formed on one of the first end and the second end, wherein the plurality of cooling features is defined by a plurality of grooves formed in the at least one radially outwardly exposed surface.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Candela Giorgio

Classifications

• F16C3/16 Primary

  Features relating to cooling · CPC title

• F16C2360/22

  Internal combustion engines · CPC title

• F16C9/02

  Crankshaft bearings · CPC title

• F16C33/1065 Primary

  Grooves on a bearing surface for distributing or collecting the liquid · CPC title