Abstract: The invention relates to a liquid separator, particularly an oil separator for compressed air systems. The liquid separator comprises a housing (15), which can be detachably connected by means of a bayonet-type connector (11) to a counterpart (12).

Abstract: An active intake manifold system includes at least one flap cartridge assembly having a unitary cartridge housing including one or more flap valve housings. A flap valve is rotatable in the aperture of the flap valve housing between an open state and a closed state. A shaft is provided extending through the mounting ear apertures of the flap valves so that the flap valves change state in unison. A plurality of air intake runners provides air flow communication between the outlets of the flap valve housings and the cylinder intake valves of the engine. Each intake runner includes a main runner portion that then splits into a plurality of tracts of differing lengths with each tract tuned to a different predetermined engine speed and having a length and volume selected to optimize engine performance at the predetermined speed. The flap valves may be automatically operated by an actuator under control of an engine control system.

Abstract: A tunable sound transmission device for transmitting an engine rumble sound into an interior of a motor vehicle includes a transmission line having a first end in acoustic communication with an air intake tract of an engine. A flexible membrane is positioned to sealably close off a portion of the transmission line thereby dividing the transmission line into two portions that are airflow isolated from each other. A receptacle is arranged at the second end of the transmission line and a user changeable sound characterization device is replaceably installed into the receptacle. The sound characterization device is configured and adapted to provide an intended frequency dependent sound attenuation characteristic and an overall sound dampening level for the transmitted engine sound.

Abstract: A tuned acoustic attenuation device includes a housing defining a chamber within with air inlet and outlet channels opening into the chamber. An acoustic chamber or chambers are arranged on an exterior wall of or alternately within the housing and positioned to extend in a substantially lateral parallel relationship to the inlet or outlet channel and are configured as quarter wave tuners. The acoustic chambers may be realized within the housing by adapting housing stiffening support ribs of the housing. The acoustic attenuation characteristics of individual acoustic chambers cooperate to broaden the sound attenuation bandwidth or increase the attenuation at selected noise frequencies.

Abstract: A device for the precipitation of liquid from a gas stream includes a preseparator chamber in a first housing portion arranged to flow a gas stream laterally centrally to rebound from an opposing sidewall and deflect upwards to a main separator in a second housing portion. The main separator includes a drainage element separating oil from the gas stream. A guide element is arranged between the housing portions and includes an outer wall with a central opening and at least one guide part arranged on the wall to laterally deflect the gas stream. The deflected gas stream flows laterally through the main separator.

Abstract: Disclosed is a filter housing having two abutting filter housing portions with a filter element sized and configured to be installed the housing. At least one quick release retention clip is pivotally secured to the filter housing and operable between an engaged and a disengaged position. In the engaged position the retention clip retentively closes the housing. In the disengaged position the retention clip is operable to apply a separating force urge the filter housing portions to separate and release the filter element.

Abstract: The present invention provides one or more reinforcing members configured to act together with the adhesive bonding between filter media layers to further resist axial deformation forces such as induced by fluid flowing through the filter and thereby acting to retain the structural form and integrity of the filter element. Also disclosed is a method of reinforcing layers of a multilayer axial filter element against displacement of the layers.

Abstract: A filter apparatus includes a filter housing having at least one opening and a plurality of retention tabs positioned proximate to at least one of the openings and secured to the filter housing. Also included is a connection fitting having a tube segment sized and configured to be received into at least one opening of the filter housing, orientation tab or tabs secured to the connection fitting and positioned to be engageable between a portion of the plurality of retention tabs when in the installed position. A retention flange extends radially from the tube segment and is configured to retentively engage with the retention tabs to secure the connection fitting to the filter housing. The connection fitting is rotatable when the tube segment is received into the filter housing but is then rotationally locked relative to the filter housing when in the installed position.

Abstract: The present invention provides an orientation device for enforcing correct orientation of a pleated filter element during installation into a filter support frame or filter housing, for example an automotive air cleaner. The orientation device includes at least one substantially rigid orientation rib positioned and mounted to have a portion of the rib extending between adjacent pleats of the pleated filter when the pleated filter is in an installed position. The orientation rib is positioned and mounted to block against at least a portion of the pleats of the filter element when the filter element is in an incorrect orientation, thereby preventing installation of the filter element.

Abstract: A fuel filter system, particularly a diesel filter, including a housing, a particle filter arranged in the housing, and a coalescer element mounted on the particle filter. Fuel passes successively through the serially connected coalescer and particle filter. The coalescer element improves the separation of any water contained in the fuel to be filtered, while exhibiting no or no significant fuel-filtering properties.

Abstract: A plastic end disk for a hollow-cylindrical filter element has an end face plastic layer and a neighboring plastic layer. The end face plastic layer is transparent for infrared radiation. The neighboring plastic layer is absorbent for infrared radiation. The plastic end disk is connected to a folded filter medium in that the end face plastic layer is trans-irradiated with an infrared radiation source, wherein the infrared radiation is absorbed in the neighboring plastic layer so that a portion of the neighboring plastic layer and a portion of the end face plastic layer are completely melted. The infrared radiation source is removed and the filter medium is pressed into a melted area of the end face plastic layer. The filter medium is secured in the pressed-in position in the end face plastic layer until a fixed connection of filter medium and end face plastic layer has been formed.

Abstract: The invention concerns a desiccant box for dehumidifying air, with a cylindrical outer housing (10), a lid (11) that closes the outer housing, and an inner housing (12) to accommodate desiccant (13). The lid (11) features at least one inflow opening (14) and at least one outflow opening (15), the contour of the outer housing opposite the lid being curved. Moreover, another inner housing (17) is provided which is located in the area of the contour (16) and runs approximately along this contour, this inner housing being also filled with desiccant (18), and the two inner housings (12 and 17) being connected to each other.

Abstract: A liquid filter, especially oil filter for an internal combustion engine, having a cup-shaped housing with a liquid inlet and a liquid outlet, a filter element arranged with a seal between the inlet and outlet, and a one-piece barrier membrane arranged in the area of the opening of the cup-shaped housing such that the liquid inlet and/or the liquid outlet can be closed by the barrier membrane.