Abstract: A system includes: a state module configured to selectively set a present state to a first state; a valve control module configured to determine first target open and closed states for valves of a suspension system based on the present state and to open and close the valves of the suspension system according to the first target open and closed states, respectively; a pump control module configured to, when the valves are in the first target open and closed states, respectively, selectively operate an electric pump of the suspension system in a first direction and increase a pressure of hydraulic fluid in a first portion of the suspension system including an accumulator, where the valve control module is configured to decrease the pressure in the first portion after the increase; and a diagnosis module configured to selectively diagnose a fault in the accumulator based on a pressure during the decrease.

Abstract: A damper assembly includes a cylinder defining a chamber. The damper assembly includes a body supported by the cylinder and having a first surface and a second surface opposite the first surface. The body defines a passage extending from the first surface to the second surface. One of the first surface or the second surface define a slope at the passage. The damper assembly includes a check disc at the slope, the check disc selectively restricting fluid flow through the passage.

Abstract: A single axle suspension system that includes right and left dampers, first and second hydraulic circuits, and a pressurizing mechanism that is connected in fluid communication with at least one of the hydraulic circuits. The pressurizing mechanism is configured to provide active heave control by adding and removing hydraulic fluid to and from at least one of the hydraulic circuits to increase and decrease pressure inside at least one of the hydraulic circuits independent of damper movements. This in turn causes a simultaneous increase in the fluid pressure inside either the first working chambers of the right and left dampers or the second working chambers of the right and left dampers to provide pitch stiffness that counters fore and aft heave of the vehicle. The pressurizing mechanism is either a bi-directional pump or a ball/screw mechanism that actuates a variable volume chamber.

Abstract: A single axle suspension system including right and left dampers, first and second hydraulic circuits, a first pressurizing mechanism connected in fluid communication with the first and second hydraulic circuits, and a second pressurizing mechanism connected in series with the first pressurizing mechanism. The first pressurizing mechanism provides roll control by generating a pressure differential between the first and second hydraulic circuits. This causes an increase in the fluid pressure inside either the first working chamber of the right damper and the second working chamber of the left damper or inside the first working chamber of the left damper and the second working chambers of the right damper to provide roll stiffness that counters vehicle roll during cornering. The second pressurizing mechanism adjusts static pressure within the first and second hydraulic circuits by adding and removing hydraulic fluid to and from the first and second hydraulic circuits.

Abstract: A damper including inner and outer tubes is provided. A piston is slidably disposed within the inner tube. An intermediate tube is positioned radially between the inner and outer tubes. An intermediate channel is disposed radially between the intermediate and inner tubes. A slanted elliptical seal is positioned at an oblique angle relative to a longitudinal axis of the inner tube and divides the intermediate channel into first and second intermediate channel portions. A first control valve is in fluid communication with the second intermediate channel portion via a first intermediate tube opening. A second control valve is in fluid communication with the first intermediate channel portion via a second intermediate tube opening.

Abstract: A shock absorber including a pressure tube, a piston assembly slidably disposed within the pressure tube, and a fluid transfer tube that extends about the pressure tube, and a reserve tube that extends about the fluid transfer tube is provided. The piston assembly divides an inner volume of the pressure tube into first and second working chambers. An intermediate chamber between the pressure tube and the fluid transfer tube is arranged in fluid communication with the first working chamber. A reservoir chamber between the fluid transfer tube is arranged in fluid communication with the intermediate chamber. An insert is disposed within the intermediate chamber, reducing the volume of the intermediate chamber and defining a fluid transfer channel between the first working chamber and the reservoir chamber.

Abstract: A quick connector is adapted to display a code that verifies that a latch member is engaged to retain an installed pipe to the quick connector. The quick connector comprises a connector body having a receiving portion surrounding an internal passage, the internal passage arranged to receive the pipe therein. A latch member retained on the receiving portion is arranged to be movable between a pipe insertion position and a latched position. In the pipe insertion position, the latch member allows the pipe to be inserted into the internal passage. A code readable by a scanning device becomes readable when the latch member is moved to the latched position verifying that the pipe is installed and latched in the connector body.

Abstract: This disclosure pertains to a device for removing air from a coolant liquid of a coolant system. The device has a body with a swirl pot at one end and a manifold extending from the swirl pot to an opposed end of the body. The swirl pot has a fluid inlet for receiving coolant fluid of a first air concentration and a fluid outlet for discharging coolant fluid of a second concentration less than the first. The manifold has a first fluid pipe connected to a plurality of outlet pipes that extend transversely to the first fluid pipe and are spaced there along.

Abstract: A quick connector includes a coupler fluidically connected by a passage to a first fluid tube. A retainer housing in axial alignment with the passage is installed on the coupler and a movable retainer is installed in the retainer housing in a first position. A second fluid tube having a raised bead formed proximate an end portion of the second fluid tube is permitted to be installed into the retainer housing cavity by the retainer when the retainer is in the first position. Moving the retainer to a second position latches the bead to the retainer housing retaining the second fluid tube to the quick connector.

Abstract: A damping control system includes: a damping chamber connected to one of (a) a body of a vehicle and (b) a wheel of the vehicle; a piston that is slidably disposed within the damping chamber and that includes: a piston rod that is connected to the other one of (a) the body of the vehicle and (b) the wheel of the vehicle; and a plunger that is connected to the piston rod and that divides the damping chamber into a first chamber and a second chamber; a first valve that regulates hydraulic fluid flow out of the first chamber; and a valve control module configured to selectively close the first valve when a position of the plunger is between (a) a first reference position within the first chamber and (b) a first end stop of the damping chamber that defines a boundary of the first chamber.

Abstract: A damper assembly includes a cylinder defining a chamber. The damper assembly includes a body supported by the cylinder and having a first surface and a second surface opposite the first surface. The body defines a passage extending from the first surface to the second surface. One of the first surface or the second surface define a slope at the passage. The damper assembly includes a check disc at the slope, the check disc selectively restricting fluid flow through the passage.

Abstract: A rinsing system includes: a pump control module configured to, when a hydraulic line is connected to a port that is fluidly connected to a hydraulic line of a suspension system, selectively operate a hydraulic fluid pump of the suspension system and pump hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the hydraulic line; and a valve control module configured to, when the hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, open valves of the suspension system and fluidly connect the hydraulic fluid pump with the hydraulic line.

Abstract: A pump assembly and method is disclosed comprising, a pump including a pump housing having a fluid inlet and at least one fluid outlet extending from the pump housing. A magnetic body of a brushless DC motor is submerged in the fluid and drives an impeller that moves the fluid from the fluid inlet to the at least one fluid outlet. A valve rotatably mounted between the impeller and the at least one fluid outlet selectively directs the flow of fluid through the at least one fluid outlet.

Abstract: A push-on fastener for engagement on a cylindrical stud includes a body having oppositely facing first and second exterior surfaces and an outer marginal periphery. A central opening extends axially through the body between the oppositely facing exterior surfaces defining an inner periphery. A first resilient tab includes a first engagement edge and a second resilient tab includes a second engagement edge. The first engagement edge defining an inner periphery of the central opening and the second engagement edge defining a periphery that is outwardly of the inner periphery of the central opening.

Abstract: An assembly comprising a housing having a first and a second fluid inlet for directing fluid to a pump cavity. A valve switch located in the housing is arranged to selectively switch the flow of the fluid between the second fluid inlet and the pump cavity. A fluid outlet is fluidically connected to the pump cavity and an impeller contained in the pump cavity is arranged to be rotated on demand by an electrical motor that accelerates the fluid in the pump cavity out of the fluid outlet.

Abstract: A single axle suspension system including right and left dampers, first and second hydraulic circuits, one or more pressurizing mechanisms with a variable volume chamber that is connected in fluid communication with the first or second hydraulic circuits, and a bi-directional pump with a first impeller that is arranged in fluid communication with the first hydraulic circuit, a second impeller that is arranged in fluid communication with the second hydraulic circuit, and a motor that is configured to drive rotation of the first and second impellers to simultaneously pump the hydraulic fluid through the first and second hydraulic circuits in opposite directions. Each pressurizing mechanism includes a driven piston that is moveable in first and second directions to increase and decrease the volume of the variable volume chamber and therefore increase and decrease static pressure within the first and/or second hydraulic circuits independent of damper movements.

Abstract: A method for assembling a damper assembly includes securing a damper interface to an external surface of a pressure tube. The method includes securing an accumulator interface to an external surface of an accumulator tube. The method includes, after the damper interface is secured to the pressure tube and the accumulator interface is secured to the accumulator tube, securing the pressure tube to the accumulator tube by press fitting the damper interface to the accumulator interface.

Abstract: A single axle suspension system that includes right and left dampers, first and second hydraulic circuits, a first pressurizing mechanism that is connected in fluid communication with the first hydraulic circuit, and a second pressurizing mechanism that is connected in fluid communication with the second hydraulic circuit. The first and second pressurizing mechanisms are configured to provide active roll control by adding and removing hydraulic fluid to and from the first and second hydraulic circuits to increase and decrease pressure inside the first and second hydraulic circuits independent of damper movements. This in turn causes a simultaneous increase in the fluid pressure inside either the first working chamber of the right and the second working chamber of the left damper or the first working chamber of the left damper and the second working chambers of the right damper to provide roll stiffness that counters vehicle roll during cornering.

Abstract: A pump assembly is disclosed comprising, a pump including a pump housing having a fluid inlet. At least one fluid outlet extends from the pump housing. An impeller driven by a motor is mounted in the pump housing arranged to move a fluid from the fluid inlet to the at least one fluid outlet. A valve rotatably mounted between the impeller and the at least one fluid outlet selectively controls the flow of fluid through the at least one fluid outlet.