Abstract:
PROBLEM TO BE SOLVED: To provide a disk brake which is lightweight, strong and simple and which is low in cost and is easy in maintenance as compared with the disk brake including a fastening tool arranged to direct in conventional longitudinal direction and simultaneously enable a technician to dispose in position capable of more easily accessing a head of the fastening tool (reaching from outside). SOLUTION: In a pneumatically driven disk brake or an electrically driven disk brake, especially, a pneumatic disk brake for a commercial vehicle, the fastening tool which fixes a mounting frame 12 to a torque plate 30 disposes the mounting frame 20 which supports a brake calliper 12 and a torque plate 30 which fixes the mounting frame 12 to an axle so as to arrange and direct to at least one surface fundamentally intersecting to longitudinal axis of the axle. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A system for automatically parking a commercial vehicle comprises a service brake system having at least one braking valve, a braking controller for controlling the service brake system, and an advanced driver assistance system (ADAS) controller. The ADAS controller communicates with the braking controller and requests activation of the service brakes of the commercial vehicle until the vehicle is stationary. The braking controller, in response to the ADAS controller requesting activation of the service brakes, determines the commercial vehicle should remain stationary and activates at least one braking valve to exhaust system pressure to mechanically park the vehicle.
Abstract:
A brake wear sensing assembly (10) for an air disc brake includes a progressive wear sensor (12), at least one lining wear sensor (16a, 16b), a control device (56), a wire harness (36) connected to the control device (56) and an adapter for joining the progressive wear sensor (12) and the lining wear sensor (16a, 16b) to the wire harness (36). The adapter (20) connects a power line to the progressive wear sensor (12), a ground line to the progressive wear sensor (12) and an input to the output of the at least one lining wear sensor (16a, 16b). An output signal from the progressive wear sensor (12) is connected to the input of the at least one lining wear sensor (16a, 16b). The signal from the progressive wear sensor (12) passes through the at least one lining wear sensor (16A, 16B) to the control device (56) such that the progressive wear sensor (12) and the at least one lining wear sensor (16A, 16B) are in series with each other.
Abstract:
A brake actuator has a plurality of actuator housing portions, a parking piston axially displaceable within one of the actuator housing portions, and a service piston axially displaceable independently of the parking piston within another of the actuator housing portions. A brake actuator rod projecting from the other of the actuator housing portions moves outward of that actuator housing portion upon at least one of fluid supply to a first substantially torus-shaped service brake bladder and fluid relief from a second substantially torus-shaped parking brake bladder. The brake actuator rod can be moved inward into the other of the actuator housing portions upon fluid relief from the first substantially torus-shaped service brake bladder, and fluid supply to the second substantially torus-shaped parking brake bladder or both.
Abstract:
A drum brake assembly for use with a wheel end electric drive motor arrangement can generate brake dust, which may accumulate on the electric motor and cause heat retention problems that are detrimental to motor performance and longevity. These issues are addressed by providing an assembly including a support attachable to a vehicle axle element, brake shoes pivotally mountable on the support, and a wheel spindle interconnected with one end of the axle element. A perforated dust shield is attachable to the support on an axial side of the brake shoes opposite the fan rotor, such that, during vehicle operation, air drawn by blades on the fan rotor through openings in a wall of the brake drum carries debris out through perforations in the dust shield and away from the wheel end motor and brake assembly.
Abstract:
A system and method are provided for integrated electrification of vehicle accessories conventionally driven by an internal combustion engine in which an electric motor is coupled to a common accessory drive that drive a plurality of accessories, such as a power steering pump, an air conditioning compressor, an air compressor, a thermodynamic heater and/or a coolant pump. The integrated electrified accessory unit preferably has the electric motor, accessory drive and accessories arranged in a common housing which is configured to be mounted to a chassis frame rail of the vehicle, the common housing including wall penetrations which facilitate rapid connection of the accessories to external lines of the vehicle.
Abstract:
A trailer control valve comprises a valve electronic control port (120) adapted to receive an electronic control signal; a valve pneumatic supply port (112) unrestrictedly fluidly communicating with a first supply of a pneumatic fluid; a valve pneumatic control port (116) normally proportionally fluidly communicating with a second supply of the pneumatic fluid based on a pressure representing a driver brake demand, the first supply of the pneumatic fluid being in an independent pneumatic circuit from the second supply of the pneumatic fluid; and a valve delivery port (114) selectively fluidly communicating with at least one of the valve pneumatic supply port and the valve pneumatic control port based on the electronic control signal, the pressure representing the driver brake demand and a pressure of the first supply of the pneumatic fluid. A first pneumatic check valve (162) includes a first check valve supply port (164) fluidly communicating with the first supply of the pneumatic fluid; and a first check valve delivery port (166) fluidly communicating with the relay valve pneumatic supply port (154). The first pneumatic check valve controls the fluid communication of the first supply of the pneumatic fluid with the relay valve pneumatic supply port based on the pressure of the first supply of the pneumatic fluid at the valve pneumatic supply port.
Abstract:
A polygonal coupling couples torque source to a torque consumer such that input and output portions of the coupling may elastically rotate relative to one another during torque transfer to accommodate rotational speed variations in delivery of torque from the torque source. In an embodiment the torque source is an internal combustion engine with an integrated switchable coupling between the engine crankshaft and a torque transfer segment supporting a motor-generator. The polygonal coupling includes axially-overlapping polygonal-shaped male and female portions which cooperate to pass torque between the output of the integrated switchable coupling and an input of the torque transfer segment. At least one of the male and female portions includes recesses which form flexible arms adjacent to the lobes of the polygonal shape that allow the portions to rotate relative to one another over small angular displacements, and thereby improve damping of crankshaft rotational vibrations.
Abstract:
A controller is configured to receive a signal representing a requested system brake application and an identified urgency. A hardware processor is capable of: determining a maximum braking pressure to be applied during the system braking application based on the identified urgency; generating a first system brake mode control signal, based on the determined maximum braking pressure, to set an associated first valve to a first valve state; generating a second system brake mode control signal, based on the determined maximum braking pressure, to set an associated second valve to a second valve state, the maximum braking pressure during the system braking application being set by the first valve state and the second valve state; determining an activation profile based on the determined maximum braking pressure; the controller transmitting the first and second system brake mode control signals and modulator control signals according to the activation profile.
Abstract:
A system on a tractor for controlling trailer service brakes comprises a manually operated trailer brake switch, a first electropneumatic valve in communication with a pressure source and a controller. The controller has an input communicating with the trailer brake switch, an output communicating with the electropneumatic valve and control logic. The control logic receives an input from the trailer brake switch indicating a driver's request to apply the trailer service brakes of the combination vehicle, determines if a predetermined condition exists and transmits a signal to the output to the electropneumatic valve. The electropneumatic valve transmits pressure to a trailer service control line to actuate the trailer service brakes in response to the trailer brake switch and existence of the predetermined condition.