A system and method for slowing a vehicle. Road conditions around the vehicle are monitored, and determined if those road conditions are hazardous. An engine control unit is informed of the hazardous road conditions and alters the operation of the engine control unit in response to the hazardous road conditions. When an operator of the vehicle desires to slow the vehicle down, an indication is received indicating the intent to slow the vehicle down. The vehicle is then slowed based upon the altered operation of the engine control unit by applying a vacuum to increase a manifold vacuum of the engine.

A braking system for a vehicle at least partially propelled by an electric traction motor electrically connected to an electric power system. The braking system comprises an electric machine configured to be electrically connected to the electric power system, the electric machine comprising a first output shaft and a second output shaft, an air blower controllably connected to the first output shaft by a clutch, the clutch being controllable between an open position in which no power is transmitted from the electric machine to the air blower, and a closed position in which power is transmitted from the electric machine to the air blower, and a fluid pump operatively connected to the electric machine via the second output shaft, wherein the fluid pump is arranged in upstream fluid communication with a fluidly operated member and in downstream fluid communication with a fluid tank.

A speed control apparatus for an inline pipeline inspection tool includes a body configured to be moved by a compressible product moving through a pipeline and a speed control mechanism supported by the body. The speed control mechanism includes a contact member that is positionable against an inner surface of the pipeline and an actuator configured to act on the contact member to adjust a speed of the body when the speed deviates from a predetermined speed. The speed control apparatus forms a drive system that provides forward propulsion to prevent the tool from slowing or stopping due to a problematic feature in the pipeline. The speed control apparatus also forms a brake system that minimizes overspeed conditions that can occur when built-up pressure initially dislodges the tool from the problematic feature in the pipeline.

An electric machine comprising a rotor, a stator, and a fluid-based brake arrangement for said rotor, said fluid-based brake arrangement having a fluid circuit for transporting a brake fluid, said fluid circuit comprising a fluid channel arrangement having at least one radial fluid channel segment extending radially through a part of said rotor so as to allow for directing brake fluid from an inner radial rotor side to an outer radial rotor side, whereby, during rotation of said rotor about an axial centre axis, acceleration of brake fluid in said at least one radial fluid channel segment causes a reaction force exerting a braking torque on the rotor.

An electric machine comprising a rotor, a stator, and a fluid-based brake arrangement for said rotor, said fluid-based brake arrangement having a fluid circuit for transporting a brake fluid, said fluid circuit comprising a fluid channel arrangement having at least one radial fluid channel segment extending radially through a part of said rotor so as to allow for directing brake fluid from an inner radial rotor side to an outer radial rotor side, whereby, during rotation of said rotor about an axial centre axis, acceleration of brake fluid in said at least one radial fluid channel segment causes a reaction force exerting a braking torque on the rotor.

A braking device and method utilizing gyroscopic braking to provide an improved braking device and method for obtaining desired amount of continuous braking power without directly converting kinetic energy into thermal energy which helps in reducing global warming and environmental pollution.

A braking device comprising a body; inner supporting means for supporting the body for rotation about a first axis; outer supporting means for supporting the inner supporting means for rotation about a second axis; means for rotating the body about the first axis; means for connecting a rotation that is desired to be braked about a fourth axis to the body so as to transmit rotation and torque to the body (2) about the second axis (102); suspension means for supporting the outer supporting means.

A parking brake fail safety control system and method for a vehicle having an electric-axle, may enable safe parking braking on a level ground, a slope, etc. By controlling the torque from a first motor configured for a rear wheel-first electric-axle and the torque from a second motor configured for a rear wheel-second electric-axle to have the same magnitude in opposite directions and by increasing/decreasing the torque from the first motor and the torque from the second motor, depending on a change of wheel speed when a parking brake fails.

A parking brake fail safety control system and method for a vehicle having an electric-axle, may enable safe parking braking on a level ground, a slope, etc. By controlling the torque from a first motor configured for a rear wheel-first electric-axle and the torque from a second motor configured for a rear wheel-second electric-axle to have the same magnitude in opposite directions and by increasing/decreasing the torque from the first motor and the torque from the second motor, depending on a change of wheel speed when a parking brake fails.

A speed control apparatus for an inline pipeline inspection tool includes a body configured to be moved by a compressible product moving through a pipeline and a speed control mechanism supported by the body. The speed control mechanism includes a contact member that is positionable against an inner surface of the pipeline and an actuator configured to act on the contact member to adjust a speed of the body when the speed deviates from a predetermined speed. The speed control apparatus forms a drive system that provides forward propulsion to prevent the tool from slowing or stopping due to a problematic feature in the pipeline. The speed control apparatus also forms a brake system that minimizes overspeed conditions that can occur when built-up pressure initially dislodges the tool from the problematic feature in the pipeline.