Vehicle engine cradle structure

Patent metadata

Field	Value
Publication number	US-11718352-B2
Application number	US-202117339667-A
Country	US
Kind code	B2
Filing date	Jun 4, 2021
Priority date	Jun 4, 2021
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

A vehicle engine cradle structure includes a front member, a rear assembly and a side member. The front member extends in a vehicle lateral direction and has a first outboard end and a second outboard end. The rear assembly extends in the vehicle lateral direction and has a first outboard area and a second outboard area opposite the first outboard area. The first side member has a first forward end, a first rearward end and a first forward outboard portion all being formed as a single monolithic unitary element. The first forward end is fixedly attached to the first outboard end of the front member. The first rearward end is fixedly attached to the first outboard area of the rear assembly. The first forward outboard portion extends in an outboard direction from the first outboard end of the front member defining an off-center impact area.

First claim

What is claimed is:

1. A vehicle engine cradle structure, comprising:
a front member extending in a vehicle lateral direction perpendicular to a vehicle longitudinal direction and having a first outboard end and a second outboard end opposite the first outboard end;
a rear assembly extending in the vehicle lateral direction and having a first outboard area and a second outboard area opposite the first outboard area; and
a first side member having a first forward end, a first rearward end and a first forward outboard portion all being formed as a single monolithic unitary element, the first forward end being fixedly attached to the first outboard end of the front member, the first rearward end being fixedly attached to the first outboard area of the rear assembly and the first forward outboard portion extending in an outboard direction from the first outboard end of the front member defining an off-center impact area.

2. The vehicle engine cradle structure according to claim 1 , wherein
the front member and the rear assembly define a vehicle longitudinal centerline, the first outboard end of the front member being defined at a first lateral distance from the vehicle longitudinal centerline, and
the first forward outboard portion having an outboard-most section that is a second lateral distance from the first outboard end of the front member, the second lateral distance being at least 35 percent of the first lateral distance.

3. The vehicle engine cradle structure according to claim 2 , wherein
the second lateral distance is less than 45 percent of the first lateral distance.

4. The vehicle engine cradle structure according to claim 1 , wherein
the first side member defines a first frame attachment location dimensioned and positioned to attach to a first frame element of a vehicle, the first frame attachment location being adjacent to the first outboard end of the front member.

5. The vehicle engine cradle structure according to claim 4 , further comprising:
a second side member having a second forward end, a second rearward end and a second forward outboard portion all being formed as a single monolithic unitary element, the second forward end being fixedly attached to the second outboard end of the front member, the second rearward end being fixedly attached to the second outboard area of the rear assembly and the second forward outboard portion extending in an outboard direction from the second outboard end of the front member further defining another off-center impact area.

6. The vehicle engine cradle structure according to claim 5 , wherein
the second outboard end of the front member is defined at a third lateral distance from the vehicle longitudinal centerline, the third lateral distance and the first lateral distance being equal to one another, and
the second forward outboard portion having an outboard-most section a fourth lateral distance from the second outboard end of the front member, the fourth lateral distance being equal to the second lateral distance.

7. The vehicle engine cradle structure according to claim 6 , wherein
the second side member defines a second frame attachment location dimensioned and positioned to attach to a second frame element of a vehicle, the second frame attachment location being adjacent to adjacent to the second outboard end of the front member.

8. The vehicle engine cradle structure according to claim 1 , wherein
the first side member is further formed with a downwardly extending outboard side and a downwardly extending inboard side with an inboard extending flange, the downwardly extending outboard side, the downwardly extending inboard side, the first forward end, the first rearward end and the first forward outboard portion all being formed as a single monolithic unitary element.

9. The vehicle engine cradle structure according to claim 8 , further comprising:
a first lower side member having a first lower forward end, a first lower rearward end, a first lower forward outboard portion, an inboard extending flange and an outboard upwardly extending flange all being formed as a single monolithic unitary element,
the first lower forward end being fixedly attached to the first outboard end of the front member, the first lower rearward end being fixedly attached to the first outboard area of the rear assembly, the inboard extending flange being fixedly attached to an inboard extending flange of the downwardly extending inboard side of the first side member and the outboard upwardly extending flange being fixedly attached to the downwardly extending outboard side of the first side member.

10. The vehicle engine cradle structure according to claim 9 , wherein
the first side member and first lower side member define a first side structure of the engine cradle, and
the first lower forward outboard portion of the first lower side member and the first forward outboard portion of the first side member together define the off-center impact area with the first forward outboard portion of the first side member.

11. The vehicle engine cradle structure according to claim 9 , wherein
the first lower side member and the first side member are made of a high strength steel that includes no more than 0.14% by weight of titanium and chromium.

12. A vehicle engine cradle structure, comprising:
a front member having a first outboard end and a second outboard end opposite the first outboard end;
a rear assembly having a first outboard area and a second outboard area opposite the first outboard area;
a first side member having a first forward end fixedly attached to first outboard end of the front member and a first rearward end fixedly attached to the first outboard area of the rear assembly, the first side member defining a first frame attachment location dimensioned and positioned to attach to a first frame element of a vehicle, the first frame attachment location being adjacent to the first outboard end of the front member, the first side member having a first forward outboard portion that extends in an outboard direction from the first frame attachment location, with the first forward end, the first rearward end the first frame attachment location, the first forward outboard portion all being defined on a single monolithic unitary element that defines the first side member; and
a second side member having a second forward end fixedly attached to second outboard end of the front member and a second rearward end fixedly attached to second outboard area of the rear assembly, the second side member defining a second frame attachment location dimensioned and positioned to attach to a frame element of a vehicle, the second frame attachment location being adjacent to the first outboard end of the front member, the second side member having a second forward outboard portion that extends in an outboard direction from the second frame attachment location, with the second forward end, the second rearward end the second frame attachment location, the second forward outboard portion all being defined on a single monolithic unitary element that defines the second side member, and
with a first distance being defined between the first frame attachment location and the second frame attachment location, and a second distance being defined between an outboard end of the first forward outboard portion and the first frame attachment location, the second distance being greater than 10 percent of the first distance and less than 15 percent of the first distance.

13. The vehicle engine cradle structure according to claim 12 , wherein
a third distance being defined between the outboard end of the second forward outboard portion and th

Assignees

• Nissan North America Inc
• Nissan Motor

Inventors

• Fekete Stephen
• Corby Ryan
• Strean Adam
• Yamada Yunosuke
• Eba Seiichiro
• Furuta Toshio

Classifications

• B62D25/082 Primary

  Engine compartments · CPC title

• B62D21/152

  Front or rear frames · CPC title

• B62D21/11 Primary

  with resilient means for suspension {, e.g. of wheels or engine; sub-frames for mounting engine or suspensions} · CPC title