Patent application number | Description | Published |
20080265190 | Electromagnetic Pressure Regulating Valve Device Having an Integrated Pressure Sensor - An electromagnetic pressure regulating valve device for regulating a hydraulic pressure including at least one pressure regulating valve which includes a solenoid part having at least one bobbin holding an electric coil, a coil core and a movably guided armature; a valve part having at least one supply connection, one return connection, one load connection and one actuating element operated by the armature and cooperating with a valve seat; and an electronic part having at least one pressure sensor for measuring the hydraulic pressure present at the load connection. At least the pressure sensor is situated on an end of the solenoid part facing the valve part upstream from the electronic part. Positioning the pressure sensor close to the valve part may substantially reduce the filter effect of the transmission link, and the hydraulic pressure to be measured is therefore transmittable free of errors up to a much higher cutoff frequency. This may result in a higher measurement accuracy, and therefore also a higher regulation accuracy, of the pressure regulating valve. | 10-30-2008 |
20090072181 | HYDRAULIC BLOCK - The invention relates to a hydraulic block ( | 03-19-2009 |
20090090881 | ELECTROMAGNETIC PRESSURE VALVE - An electromagnetic pressure regulating valve has a valve portion for conducting and regulating the pressure of an operating medium, such as oil, a magnet portion for actuating the valve portion for regulating the pressure of the operating medium and having a magnet housing, in which a magnet core is located that as needed exerts magnetic force on an armature, located in the magnet housing, a spring with a spring force generating a pressure activation threshold to be overcome upon regulation and located between the armature and an adjusting ball that is located in a pole piece of the magnet housing, and the spring has regions of different diameter. | 04-09-2009 |
20100084589 | SLIDE VALVE FOR HYDRAULIC CONTROL IN A MOTOR VEHICLE AUTOMATIC TRANSMISSION - A slide valve is used for controlling the hydraulic system in a motor vehicle automatic transmission. It includes a housing, a valve slide that is guided in the housing, which has a plurality of adjacent sections having different diameters. Furthermore, an electromagnetic operating device is provided, which is able to impinge upon the valve slide at least in a first effective direction. An impingement device impinges upon the valve slide counter to the first effective direction. It is provided that the housing has a plurality of axially set-apart passages, and that the type of functioning of the slide valve depends on the configuration of the hydraulic connections of the passages, in one configuration of the hydraulic connections, the slide valve having the functioning of a pressure control valve and/or in one configuration of the hydraulic connections, the slide valve having the functioning of a pressure reducing valve and/or in one configuration of the hydraulic connections, the slide valve having the functioning of a differential pressure valve. | 04-08-2010 |
20100090142 | PRESSURE REGULATING VALVE - The invention relates to a pressure control valve ( | 04-15-2010 |
20100127197 | PRESSURE-REGULATING VALVE - A pressure-regulating valve includes a magnetic actuator and a housing. Accommodated in the housing is an armature, which is movable in a pole tube. The pole tube is encompassed by a magnetic coil. The armature is supported in the pole tube in a film structure. | 05-27-2010 |
20120104293 | PRESSURE CONTROL VALVE, IN PARTICULAR FOR AN AUTOMATIC TRANSMISSION IN A MOTOR VEHICLE - A pressure control valve for an automatic transmission in a motor vehicle includes a housing, a valve slide which is guided in the housing and which has multiple adjacent sections, a first section having a first diameter, a second section adjacent thereto having a second diameter smaller than the first diameter, and a third section having the first diameter adjacent to the second section. An inflow pressure opening is assigned to the first section, a control pressure opening is assigned to the second section and a return flow opening is assigned to the third section. An electromagnetic actuating device acts upon the valve slide via a piston, which is guided pressure-tight in the housing. | 05-03-2012 |