The invention relates to a crossmember for motor vehicle construction, having at least two modules that can be arranged one above the other, wherein each module has an inner side wall and an outer side wall, which are connected to one another at their upper ends by an upper wall and at their lower ends by a lower wall, wherein the upper wall of the lower module has, over the longitudinal extent thereof, a raised portion or depression, which engages in a complementary depression or raised portion of the lower wall of the upper module.

A modular chassis is provided for an off-road vehicle to improve assembly, servicing, and repairing of a drivetrain of the off-road vehicle. The modular chassis includes a chassis to support components of the off-road vehicle. A front frame module couples with a front of the chassis, and a rear frame module couples with a rear of the chassis. The front frame module supports lower suspension arms of the off-road vehicle by way of inboard bushing joints. The front frame module supports at least a steering gear and a front differential of the off-road vehicle. The rear frame module is a tube-frame structure that supports components of the off-road vehicle. A lower portion of the rear frame module extends rearward and acutely upward to a top frame member that couples with upper side portions of the chassis. Several cross-members impart structural integrity to the rear frame module.

A modular chassis is provided for an off-road vehicle to improve assembly, servicing, and repairing of a drivetrain of the off-road vehicle. The modular chassis includes a chassis to support components of the off-road vehicle. A front frame module couples with a front of the chassis, and a rear frame module couples with a rear of the chassis. The front frame module supports lower suspension arms of the off-road vehicle by way of inboard bushing joints. The front frame module supports at least a steering gear and a front differential of the off-road vehicle. The rear frame module is a tube-frame structure that supports components of the off-road vehicle. A lower portion of the rear frame module extends rearward and acutely upward to a top frame member that couples with upper side portions of the chassis. Several cross-members impart structural integrity to the rear frame module.

A low suspension arm strut coupling is provided for a suspension of an off-road vehicle. The suspension comprises a lower suspension arm that is hingedly coupled between a chassis of the off-road vehicle and a spindle assembly that is coupled with a front wheel. An upper suspension arm is hingedly coupled between the chassis and the spindle assembly. A strut is coupled between the lower suspension arm and the chassis. A lower pivot couples the strut to the lower suspension, and an upper pivot couples the strut to the chassis. The upper and lower pivots provide a lower center of gravity of the off-road vehicle and a relatively smaller shock angle. The lower suspension arm is reinforced to withstand forces due to movement of the front wheel and operation of the strut in response to travel over terrain.

A method for manufacturing an automobile includes placing a body on a pre-assembled underside part set, and then assembling the underside part set onto the body. The underside part set includes a rear suspension in which a spring and a shock absorber are arranged side by side, and the spring is brought into a compressed state in the underside part set before the body is placed on the underside part set.

A method for manufacturing an automobile includes placing a body on a pre-assembled underside part set, and then assembling the underside part set onto the body. The underside part set includes a rear suspension in which a spring and a shock absorber are arranged side by side, and the spring is brought into a compressed state in the underside part set before the body is placed on the underside part set.

A suspension is provided for coupling a front wheel with a chassis of an off-road vehicle. The suspension comprises upper and lower suspension arms that each includes two inboard mounting points to the chassis and one outboard rod-end joint to a spindle assembly coupled with the front wheel. A ball comprising each outboard rod-end joint is fastened by way a bolt between a pair of parallel prongs extending from the spindle assembly. The upper suspension arm is configured to facilitate coupling a strut between the lower suspension arm and the chassis. A steering rod is coupled with the spindle assembly by way of a steering rod-end joint that is disposed forward of a drive axle, thereby decreasing leverage of the front wheel on the steering rod and substantially eliminating bump steer that may occur due to rough terrain.

A suspension is provided for coupling a front wheel with a chassis of an off-road vehicle. The suspension comprises upper and lower suspension arms that each includes two inboard mounting points to the chassis and one outboard rod-end joint to a spindle assembly coupled with the front wheel. A ball comprising each outboard rod-end joint is fastened by way a bolt between a pair of parallel prongs extending from the spindle assembly. The upper suspension arm is configured to facilitate coupling a strut between the lower suspension arm and the chassis. A steering rod is coupled with the spindle assembly by way of a steering rod-end joint that is disposed forward of a drive axle, thereby decreasing leverage of the front wheel on the steering rod and substantially eliminating bump steer that may occur due to rough terrain.

A method, device, and computer-readable medium for checking whether a rolling chassis on which a vehicle body is arranged, is being used admissibly is provided. A first specification signal is received which represent a first specification of the rolling chassis. The first specification comprises stipulations for admissible use of the rolling chassis in a motor vehicle. A motor vehicle state signal is received which represent a motor vehicle state. The rolling chassis is checked to determine whether the rolling chassis is being used in accordance with the stipulations for admissible use based on the first specification and the motor vehicle state. A result signal is generated which represent a result of the check, and the generated result signal is output.

A method of creating a configurable, uni-member, bended frame chassis comprising the steps of having a single sheet of material; forming holes at predetermined locations in said single sheet of material; using the single sheet of material and forming a base, a first side, a second side, a first top plate and a second top plate by; bending the material lengthwise and upwardly and forming the first side; bending the material lengthwise and upwardly and forming the second side; and having the base formed between the first side and the second side; bending the material lengthwise at a top of the first side and forming the first top plate; and bending the material lengthwise at a top of the second side and forming the second top plate.