Abstract: The invention relates to a valve arrangement (2) for an exhaust gas recirculation device of an internal combustion engine, especially in a motor vehicle. Said valve arrangement (2) comprises a first valve (9) which is used to control a first gas path (7) and is mobile between an open position, a closed position, and at least one intermediate position. The inventive valve arrangement (2) also comprises a second valve (10) for controlling a second gas path (8) which is separate from the first gas path (7), said second valve being mobile between an open position, a closed position and at least one intermediate position independently from the first valve (9). The valve arrangement (2) also comprises a common housing (6) which contains both valves (9, 10) and through which the two gas paths (7, 8) are guided.

Abstract: The invention relates to an exhaust gas recirculation device (5) for an internal combustion engine (1), especially in a motor vehicle, said device comprising an exhaust gas recirculation line (6) and an exhaust gas cooler (7) which is built into the exhaust gas recirculation line (6) and connected to a cooling circuit (8) operating by means of a liquid coolant. The exhaust gas recirculation cooler (7) comprises a cooler housing (9) which comprises at least one exhaust gas inlet (10), an exhaust gas outlet (11), a coolant inlet (12) and a coolant outlet (13), and through which a coolant flows. In order to be able to improve the adjustment of the cooling power, the exhaust gas recirculation cooler (7) contains, in the cooler housing (9) thereof, a first cooling tube arrangement (14) and a second cooling tube arrangement (15) which enables a larger heating flow between the exhaust gas and the coolant than the first cooling tube arrangement (14).

Abstract: The invention relates to a valve arrangement (2) for an exhaust gas recirculation device of an internal combustion engine, especially in a motor vehicle. Said valve arrangement (2) comprises a first valve (9) which is used to control a first gas path (7) and is mobile between an open position, a closed position, and at least one intermediate position. The inventive valve arrangement (2) also comprises a second valve (10) for controlling a second gas path (8) which is separate from the first gas path (7), said second valve being mobile between an open position, a closed position and at least one intermediate position independently from the first valve (9). The valve arrangement (2) also comprises a common housing (6) which contains both valves (9, 10) and through which the two gas paths (7, 8) are guided.

Abstract: The invention relates to a valve device (2) in a flow line (1) of an internal combustion engine, in particular in a cooling or an oil circuit. Pertinent to the invention is that the valve device (2) is designed in such a manner that it exhibits, at least in an open state, no or only very minimal flow resistance.

Abstract: The invention relates to an exhaust gas recirculation device (5) for an internal combustion engine (1), especially in a motor vehicle, said device comprising an exhaust gas recirculation line (6) and an exhaust gas cooler (7) which is built into the exhaust gas recirculation line (6) and connected to a cooling circuit (8) operating by means of a liquid coolant. The exhaust gas recirculation cooler (7) comprises a cooler housing (9) which comprises at least one exhaust gas inlet (10), an exhaust gas outlet (11), a coolant inlet (12) and a coolant outlet (13), and through which a coolant flows. In order to be able to improve the adjustment of the cooling power, the exhaust gas recirculation cooler (7) contains, in the cooler housing (9) thereof, a first cooling tube arrangement (14) and a second cooling tube arrangement (15) which enables a larger heating flow between the exhaust gas and the coolant than the first cooling tube arrangement (14).

Abstract: The invention relates to an exhaust gas recirculation device (1) for an internal combustion engine, in particular in a motor vehicle, having an exhaust gas recirculation line (2) for introducing exhaust gas into a primary intake line (4), with an exhaust gas recirculation valve (3) for controlling the exhaust gas recirculation line (2). The exhaust gas recirculation line (2) has an end section (7) which runs into the primary intake line (4) with an orifice opening (8).

Abstract: The invention relates to a filter-cooler combination for liquids, especially for the lubricating oil of an automotive internal combustion engine. The aim of the invention is to provide a combination of the aforementioned kind that can be produced economically and that can be screwed to a base as an alternative to a screw-type filter cartridge with the screw conditions on the base remaining unchanged.

Abstract: A cooling cell, cabinet or chamber having hollow walls which have fitting at top and bottom which can be alternatively used as inlet and outlet for the fresh cooling medium and the depleted cooling medium and collected gas. In a first phase the fresh cooling medium is forced into the bottom of the hollow wall surface to drive out collected gas above the lighter phase of the previously used medium whereupon the fillings are functionally switched so that the fresh medium is introduced from above and the heavy phase of the depleted medium is discharged from the bottom to complete displacement of the latent cooling medium.

Abstract: In heat transfer devices, which are constructed as plate oil coolers for motor vehicles, an adapter plate is provided in order to achieve a compact construction with a joint fastening and with feeding openings which are accessible only from one side. The adapter plate is configured such that at least two, but preferably four different plate coolers can be supplied with the same coolant flow. This results in a particularly simple and compact construction.

Abstract: A heat exchanger has flat tubes arranged in parallel to one another and at a distance from one another. The flat tubes are provided in the area of their ends with connection openings to adjacent flat tubes to avoid difficulties with respect to the tight closing of the open front ends, massive slide-in parts are introduced into the open tube ends. The walls of the flat tubes at least on the narrow sides against the slide-in parts. The slide-in parts therefore act as adapting pieces which determine the final form of the tubes. They cause a tight and pressure-resistant connection after the soldering.