Abstract: A vehicle understructure includes a hydrogen tank that is disposed along a longitudinal axis of a vehicle. At least an upper portion of the hydrogen tank is enclosed in a floor tunnel. The hydrogen tank includes dome portions that are disposed at both ends of a cylindrical center body portion of the tank, and at least one valve portion that protrudes from at least one of the dome portions. The vehicle understructure also includes a brace that extends along a transverse axis of the vehicle and is secured to transversely outer side portions of the floor tunnel. The brace is at least partially overlapped with at least one of the dome portions when viewed from the front or rear of the vehicle.

Abstract: A vehicle understructure includes a hydrogen tank that is disposed along a longitudinal axis of a vehicle. At least an upper portion of the hydrogen tank is enclosed in a floor tunnel. The hydrogen tank includes dome portions that are disposed at both ends of a cylindrical center body portion of the tank, and at least one valve portion that protrudes from at least one of the dome portions. The vehicle understructure also includes a brace that extends along a transverse axis of the vehicle and is secured to transversely outer side portions of the floor tunnel. The brace is at least partially overlapped with at least one of the dome portions when viewed from the front or rear of the vehicle.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at width direction sides of a rear floor pan; a rear suspension member extending along the vehicle front-rear direction, and attached to front portions of left and right rear side members; a load bearing section projecting upwardly from the rear suspension member; left and right reinforcement members extending along the vehicle front-rear direction, and disposed at a vehicle width direction inner side of rear portions of the left and right rear side members and at a vehicle rear side of the rear suspension member, a rear end portion of the reinforcement member partially overlapping a rear bumper reinforcement in a vehicle front-rear direction view; and a rear cross member linking the left and right rear side members together and partially overlapping the load bearing section in the vehicle front-rear direction view.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at width direction sides of a rear floor pan; a rear suspension member extending along the vehicle front-rear direction, and attached to front portions of left and right rear side members; a load bearing section projecting upwardly from the rear suspension member; left and right reinforcement members extending along the vehicle front-rear direction, and disposed at a vehicle width direction inner side of rear portions of the left and right rear side members and at a vehicle rear side of the rear suspension member, a rear end portion of the reinforcement member partially overlapping a rear bumper reinforcement in a vehicle front-rear direction view; and a rear cross member linking the left and right rear side members together and partially overlapping the load bearing section in the vehicle front-rear direction view.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at both width direction sides of a rear floor pan; a rear suspension member that includes left and right side sections disposed along the front-rear direction, both front-rear end portions thereof being attached to respective front portions of the rear side members; and left and right reinforcement members extending along the front-rear direction, and being disposed at a width direction inner side of rear portions of the side members and at a rear side of the rear suspension member, each including a straight ridgeline section extending along the front-rear direction from a front end portion across to a rear end portion of the reinforcement member, at least part of the respective front end portion of the reinforcement member overlapping the respective side section of the rear suspension member in a front-rear direction view.

Abstract: A vehicle rear section structure includes: left and right rear side members disposed along a front-rear direction at both width direction sides of a rear floor pan; a rear suspension member that includes left and right side sections disposed along the front-rear direction, both front-rear end portions thereof being attached to respective front portions of the rear side members; and left and right reinforcement members extending along the front-rear direction, and being disposed at a width direction inner side of rear portions of the side members and at a rear side of the rear suspension member, each including a straight ridgeline section extending along the front-rear direction from a front end portion across to a rear end portion of the reinforcement member, at least part of the respective front end portion of the reinforcement member overlapping the respective side section of the rear suspension member in a front-rear direction view.