APPARATUS AND METHOD OF USE OF APPARATUS FOR LOCATING COMPONENTS OF A SYSTEM

• US 20180149110A1
• Filed: 05/31/2016
• Published: 05/31/2018
• Est. Priority Date: 06/01/2015
• Status: Abandoned Application

• Current Assignee: Jaguar Land Rover Limited (TATA Motors Limited)
• Original Assignee: Jaguar Land Rover Limited (TATA Motors Limited)
• Inventors: IQBAL, Junaid
• Application Number:
  US15/578,329
• Publication Number:
  US 20180149110A1
• Time in Patent Office: Days
• CPC Class Codes: F02F 7/0053 Crankshaft bearings fitted in the crankcase

Abstract

A bearing cap for attachment to a cylinder block, the bearing cap comprising: receiving means for receiving a crankshaft bearing; contact means for contacting the cylinder block, and at least two projection means extending from the contact means for positioning the bearing cap on the cylinder block for attachment, wherein each of the projection means comprises an externally facing contact surface each of which is dimensioned to simultaneously contact a different receptacle of the cylinder block when positioning the bearing cap on the cylinder block for attachment, and an internally facing non-contact surface each of which is dimensioned to simultaneously not contact the respective receptacle of the cylinder block when positioning the bearing cap on the cylinder block for attachment.

Claims

1-30. -30. (canceled)

31. A bearing cap for attachment to a cylinder block, the bearing cap comprising:

receiving means for receiving a crankshaft bearing;

contact means for, in use, contacting the cylinder block, and

at least two projection means extending from the contact means for, in use, positioning the bearing cap on the cylinder block for attachment,

wherein each of the projection means comprises an externally facing contact surface and an internally facing non-contact surface,

wherein the externally facing contact surface comprises at least a first face of the projection means which is configured to face away from the receiving means, and the internally facing non-contact surface comprises at least a second and distinct face of the projection means which is configured to face toward the receiving means, and

the externally facing contact surface is dimensioned to, in use, contact a different receptacle of the cylinder block when positioning the bearing cap on the cylinder block for attachment, and the internally facing non-contact surface is dimensioned such that, in use, it does not contact a respective receptacle of the cylinder block when positioning the bearing cap on the cylinder block for attachment, and

the externally facing contact surface comprises at least a first portion and a second portion such that, for any two projection means separated by the receiving means, the separation of at least the first portion of each externally facing contact surface is smaller than the separation of outer extremities of the receptacles in which, in use, the projection means are received, and separation of at least the second portion of each externally facing contact surface is larger than separation of the outer extremities of the receptacles in which, in use, the projection means are received.

32. A bearing cap according to claim 31, wherein the receiving means comprises a crankshaft bearing receiving portion, the contact means comprises a bearing cap contact surface and the projection means comprises pegs.

33. A bearing cap according to claim 31, wherein each of the externally facing contact surfaces is dimensioned to, in use, simultaneously contact a different receptacle of the cylinder block when positioning the bearing cap on the cylinder block for attachment, and each of the internally facing non-contact surfaces is dimensioned such that, in use, the internally facing non-contact surfaces simultaneously do not contact the respective receptacle of the cylinder block when positioning the bearing cap on the cylinder block for attachment.

34. A bearing cap according to claim 31, wherein the first portion is distal from the contact means and the second portion is proximal to the contact means.

35. A bearing cap according to claim 31, wherein the projection means are tapered from a larger cross section at an interface with the contact means, to a smaller cross section at a free end of the projection means.

36. A bearing cap according to claim 31, wherein the projection means are integral with the contact means.

37. A bearing cap according to claim 31, wherein a contact point between each of the projection means and the respective receptacle, when positioning the bearing cap on the cylinder block for attachment, is at a point on each of the projection means, between a base of the projection means at an interface with the contact surface and a free end of the projection means.

38. A bearing cap according to claim 31, comprising a void which, in use, receives material displaced from a contact point on the cylinder block.

39. An assembly comprising one or more bearing caps according to claim 31 and a cylinder block, wherein the cylinder block comprises:

a cylinder block contact surface for abutment to the contact means, and

for each of the one or more bearing caps, at least two receptacles in the cylinder block contact surface, for receiving at least two of the projection means extending from the contact means.

40. An assembly according to claim 39, wherein the at least two receptacles each comprise a stepped recess having a first section extending into the cylinder block from the cylinder block contact surface to a first depth and a second section extending further into the cylinder block from a base of the first section, the second section having a smaller cross section than the first section.

41. An assembly according to claim 40, wherein the first section and the second section are circular in cross section.

42. An assembly according to claim 40, wherein the stepped recess is substantially orthogonal to the cylinder block contact surface.

43. An assembly according to claim 40, wherein the second section is coaxial with the first section.

44. An assembly according to claim 40, wherein the externally facing contact surface of each of the at least two projection means contacts a respective one of the receptacles at an interface contact point comprising a lip between the first section and the second section.

45. An assembly according to claim 31, wherein the bearing cap comprises a harder material than a material of the cylinder block.

46. An assembly according to claim 39, wherein a material of the bearing cap has a lower thermal expansion coefficient than a material of the cylinder block.

47. A method of assembling the assembly of claim 39, the method comprising:

locating the at least two projection means extending from the contact means into the respective receptacles of the cylinder block such that each of the externally facing contact surfaces of the at least two projection means contact the respective receptacle of the cylinder block at a contact point and that each of the internally facing contact surfaces of the at least two projection means are separated from the respective receptacle of the cylinder block, and

applying force to the bearing cap to cause the contact means and cylinder block contact surface to abut such that each of the at least two projection means are forced further into the respective receptacle of the cylinder block, causing displacement of material from the receptacle at the contact point.

48. A method of assembling the assembly according to claim 47, wherein the material displaced from the contact point is displaced to a void adjacent to the contact point.

49. A method of assembling the assembly according to claim 47, wherein the contact point is below the cylinder block contact surface.

50. A vehicle comprising a bearing cap as claimed in claim 31.