Other

Avl List Gmbh

Avl Gesellschaft Fur Verbrennungskraftmaschinen Und Messtechnik M.b.h.

Franz Knopf

Karl Kirchweger

Gerhard Thien

Klaus-Christoph Harms

Alexander Bergmann

Wolfgang Schindler

Helmut Pongratz

Harald Grantner

A device for determination of solid particle concentration includes a primary diluter (), a downstream heated evaporator (), a secondary diluter () downstream of the evaporator () and a particle counter (). The secondary diluter () is a porous tube diluter and is mounted between the outlet of the evaporator () and a stabilization chamber (), from which the sample flow is diverted to the particle counter ().

Device for the determination of the concentration of solid particles

A measuring chamber for photo-acoustical sensors for the continuous measurement of radiation-absorbing substances, in particular of radiation-absorbing particles, in gaseous samples includes at least one entry and at least one exit for the samples, a tube section with microphone that allows for the flow-through of the sample in longitudinal direction, and at least one entry and exit point for a laser beam that is aligned with the tube section, and whereby these entry and exit points are both arranged at a distance from the measuring tube by at least one chamber with a cross-sectional area that is expanded relative to the tube section. To prevent soiling of the windows at the points of entry of the radiation into the cell and to slow down the deposition of the particles of the measured aerosol, whereby long-term, high-sensitivity operation of the measuring cell is possible, two entries () are envisioned at two ends of the tube section () that are opposite relative to each other and at least one exit () that is arranged at a location which is centered between the entries ().

Measuring chamber for photo-acoustical sensors

A water-cooled internal combustion engine powering the vehicle is mounted in an engine compartment comprising a sound-insulating capsule. Independent of and additionally to any possible blower ventilation of the capsule at least one separate inlet opening into the capsule is connected to an intake opening situated in an area which is exposed to dynamic pressure when the vehicle is in motion. The front cross-member may be provided with an intake opening open in the direction of motion as well as with a sound-absorbing lining, and the inflowing cooling air may be fed into the capsule via the adjacent longitudinal beams of the vehicle frame.

Air cooling arrangement for encapsulated vehicle engine

An axial fan, preferably for the cooling systems of water-cooled internal combustion engines, comprises an impeller and an air duct housing provided with a fan guard which is separated by an annular gap from the tips of the impeller blades and is centered on the impeller axis by a support comprising radial arms attached to the fan guard. For noise reduction, the radial arms are supported on the hub of the impeller, on the side facing the fan shaft, by means of a roller bearing held by a mounting plate, and the mounting plate is made independent of the impeller bearing.

Axial fan

In order to improve in a simple manner the ventilation of a water-cooled internal combustion engine having a sound-absorbing cover, a suction device is provided at the air inlet opening of the cover, the suction device containing a suction port in the low pressure area of the radiator/fan assembly. By specific placement of several air inlet openings a variety of cooling requirements may be met.

Water-cooled internal combustion engine with a sound-absorbing cover

In order to avoid the danger of overheating the separate exhaust jacket of a water-cooled internal combustion engine with a sound-absorbing cover whose enclosed space contains air inlet and outlet openings sealed against the penetration of sound, and is ventilated by cooling air during operation of the engine, and which has a separate exhaust jacket with air ducts of its own-with a radiator cooling fan being placed outside of the cover in the vicinity of a cover wall serving as a radial deflector for the outgoing air from the fan, and with the exhaust jacket leading substantially upwards from its outlet to its inlet opening-after the engine has been switched off and the forced ventilation has thus come to a standstill, the air inlet opening leading into the exhaust jacket is connected to the topmost part of this jacket and is positioned such as to be exposed to the flow of outgoing air from the fan.

Growing community of inventors

Graz, Austria

Franz Knopf