A load based tire pressure regulation system for trucks or trailers employing an air spring maintained at a variable pressure P.sub.AS depending upon the load on the truck or trailer, includes an air pilot pressure regulator receiving air at pressure P.sub.AS and air at the pressure of at least one tire of a truck or trailer, and configured to feed air to and bleed air from the at least one tire of the truck or trailer as a function of the load on the truck or trailer. The pressure regulator is configured to feed air to and bleed air from the at least one tire of the truck or trailer based upon the pressure of the air spring P.sub.AS as a function of the load on the air spring (F.sub.AS), and further upon the recommended pressure P.sub.T of the at least one tire as a function of the load on the tire (F.sub.T).

Systems, methods, and computer readable storage media provide dynamic chassis and tire status indications associated with a vehicle. Lift axle status data may be graphically represented by a lift axle indicator dynamically provided in a shared notification/messaging space positioned within the driver's line of sight during a lift axle transition. The lift axle indicator may include a side-view representation of the vehicle including a plurality of axle sections indicating the status of each axle. The lift axle indicator may be suppressed when air pressure is stabilized. Additionally, a graphical representation of data associated with statuses (e.g., air pressure, temperature) of each tire may be provided in a top-down view representation of the vehicle including its associated tire/axle configuration and the tire pressure for each tire. The graphical representation may be configured to reflect the correct number of axles and tires per position, and may further include a tractor versus trailer designation.

A method and apparatus for lowering the height of a wheeled vehicle for cargo height constraints during transportation. The rear leaf spring shackle on each side of the vehicle is connected to a sliding frame mount. In the transport configuration, fasteners are removed from the sliding frame mount, and the mount slides forward, rotating the rear leaf spring shackle from a near vertical to a near horizontal position, effectively lowering the height of the vehicle. To return the vehicle to the ride configuration, a screw jack member is attached to the sliding frame mount and a rear attachment point on the vehicle, pulling the sliding frame mount back, aligning attachment points of the mount with the frame member in the original position. The fasteners are reinstalled to lock the sliding frame mount into the ride configuration.

A heavy-duty vehicle may include a vehicle frame, a plurality of rear-wheel assemblies, and a plurality of front-wheel assemblies. The wheel assemblies are mounted to the vehicle frame. Each of the front-wheel assemblies may include a rim, a spindle, a brake assembly, a motor, and a transmission assembly. The spindle may be at least partially disposed within the rim. The brake assembly may be disposed within the rim and may extend around the spindle. The motor may be disposed within the cavity in the spindle. At least a portion of the motor is disposed between first and second axial ends of the rim. The transmission assembly may be disposed within the rim. The transmission assembly may transmit rotary motion of the motor to the rim to rotate the rim relative to the spindle.

A working machine includes a first side, a second side arranged opposite to the first side. a dump body, a working machine frame, and at least one tilting actuator. The at least one tilting actuator may arrange the working machine in a load dumping state. The working machine further includes a first propulsion axle arranged in the first side, a second propulsion axle arranged in the second side, a first propulsion axle suspension arrangement arranged between the first propulsion axle and the working machine frame; and a second propulsion axle suspension arrangement arranged between the second propulsion axle and the working machine frame. In the load dumping state the second propulsion axle suspension arrangement is stiff.

A drive system of an electric vehicle is disclosed. The vehicle has an arrangement optimized for characteristics of a hydrogen electric truck so as to ensure an available space inside vehicle body frames, thereby allowing a battery, high-voltage electric parts, a hydrogen tank, and the like to be arranged inside the vehicle body frames and increasing space utilization in the vehicle. The drive system includes a motor configured to drive the vehicle, a reducer or a transmission connected to an output side of the motor so as to change a rotational speed of the motor, and a rear axle configured to transmit rotating power output from the reducer or the transmission to vehicle wheels. The motor and the reducer or the transmission together with the rear axle are mounted on a suspension.

The present invention relates to a method for determining aging of a vehicle suspension arrangement (100) arranged between a frame and a wheel axle of a vehicle, said suspension arrangement (100) comprising a flexible bellows (102) for damping motions from said wheel axle, the method comprising the steps of determining a distance moved by a portion of the flexible bellows (102) when the suspension arrangement is exposed to an external load; determining a gas pressure level within said flexible bellows (102) when the portion of said flexible bellows (102) has moved said distance; determining a relationship between the determined gas pressure level within said flexible bellows and said distance moved by the portion of the flexible bellows; comparing the relationship with a predetermined threshold level; and determining that said flexible bellows is aged if a difference between the relationship and the predetermined threshold level is outside a predetermined threshold range.

A front upper suspension connection for a space frame comprises a bottom surface fixedly attachable to a front lower suspension connection; a top rear mounting surface fixedly attachable to a front upper frame connection; a top front mounting surface fixedly attachable to a first elongate support member; a front strut attachment point located below the top rear mounting surface and the top front mounting surface to pivotably attach a front strut; and a lower rear mounting surface located below the top rear mounting surface fixedly attachable to a second elongate support member. The front strut attachment point can include a hole passing through the top rear mounting surface, a coaxial hole passing through the top front mounting surface, and a front strut attachment pin configured to pass through the top rear mounting surface, the top front mounting surface, and a top mounting hole integral to the front strut.

A front lower suspension connection for a space frame comprises a U-shaped base and upper suspension control arm support sections on the U-shaped base. The U-shaped base can have a cross-beam section and suspension column support beam sections positioned at opposite ends of the cross-beam section, where each suspension column support beam section may include lower suspension control arm pivot joint supports located at opposite ends of the suspension column support beam sections. Each upper suspension control arm support section can have a first support column and a second support column spaced from the first support column, where the first support column may include a first upper suspension control arm pivot joint support, and the second support column may include a second upper suspension control arm pivot joint support and a front mounting surface. A rear mounting may be provided on a rear surface of the front lower suspension connection.

A chassis system for commercial vehicles includes a trailing arm and a plunger piston which are connected or can be connected to one another via a connecting region, the connecting region having an adjusting device which includes an engagement element and a guide element, and it being possible for the engagement element to be moved relative to the guide element in such a way that a displacement, in particular a translational movement, of the plunger piston relative to the trailing arm is made possible.