The invention relates to a method for determining a loading of a soot filter with soot particles from an exhaust gas mass flow of an internal combustion engine in a motor vehicle, a control device for an internal combustion engine having a soot filter, and a computer program product for carrying out the method. In the first step 100 of the method a characteristic curve for the relationship between the exhaust gas mass flow, exhaust gas temperature, ambient pressure, and pressure drop across the soot filter without loading is determined; in the second step 200 a second exhaust gas mass flow and a second pressure drop that occurs during loading of the soot filter are determined; in the third step 300, from the characteristic curve the first pressure drop is determined for which the first and second exhaust gas mass flows have the same value; in the fourth step 400 an estimated value for the loading of the soot filter is computed via a real-time parameter estimation, preferably by use of the gradient method, based on the previously determined parameters. The method allows a reliable determination of the instantaneous loading of a particulate filter, regardless of the type of measuring signals used in each case for characterizing the loading behavior of the soot filter.

A module for measuring and monitoring an inlet and outlet pressure is described herein. The module includes an inlet pressure port for fluid communication to a fluid line before a filter and the inlet pressure port comprising a first pressure sensor. The module includes an outlet pressure port for fluid communication to a fluid line after the filter and the outlet pressure port comprising a second pressure sensor. At least one signal port is disposed in the module. The first pressure sensor and the second pressure sensor during operation are in signal communication with the at least one signal port.

A module for measuring and monitoring an inlet and outlet pressure is described herein. The module includes an inlet pressure port for fluid communication to a fluid line before a filter and the inlet pressure port comprising a first pressure sensor. The module includes an outlet pressure port for fluid communication to a fluid line after the filter and the outlet pressure port comprising a second pressure sensor. At least one signal port is disposed in the module. The first pressure sensor and the second pressure sensor during operation are in signal communication with the at least one signal port.

A motor casing and a combination of a motor casing and a plug connection, the motor casing being designed for a drive of movable components of a vehicle, in particular sunroofs, blinds or roofs of convertible. A plug is inserted in the motor casing and a gap is provided between the motor casing and the plug connection. According to the disclosure, at least one projection is provided in the area of the gap and avoids play between the motor casing and the plug connection.

A temperature compensated differential pressure system is provided. The system includes a pair of flanges affixed together each having a flange diaphragm therein, wherein a plurality of capillary tubes extends between the pair of flanges and a pair of opposed remote diaphragm housings. The remote diaphragm housings include a remote diaphragm therein, wherein the remote diaphragm displaces a fill fluid in pressure capillaries to displace each flange diaphragm to detect a differential pressure between each location of the remote diaphragm housings. A compensating capillary extends from the remote diaphragm housings to an opposing flange diaphragm, wherein the compensating capillary is not in operable communication with the remote diaphragms. As such, any fluctuation in fill fluid volume of the compensating capillaries due to temperature fluctuations is applied to an opposing flange diaphragm to cancel temperature effects from the differential pressure determination.

A temperature compensated differential pressure system is provided. The system includes a pair of flanges affixed together each having a flange diaphragm therein, wherein a plurality of capillary tubes extends between the pair of flanges and a pair of opposed remote diaphragm housings. The remote diaphragm housings include a remote diaphragm therein, wherein the remote diaphragm displaces a fill fluid in pressure capillaries to displace each flange diaphragm to detect a differential pressure between each location of the remote diaphragm housings. A compensating capillary extends from the remote diaphragm housings to an opposing flange diaphragm, wherein the compensating capillary is not in operable communication with the remote diaphragms. As such, any fluctuation in fill fluid volume of the compensating capillaries due to temperature fluctuations is applied to an opposing flange diaphragm to cancel temperature effects from the differential pressure determination.

Methods and apparatuses for indicating the presence of a directional differential pressure between separated adjacent spaces are provided. A differential pressure set point indicator may be configured to correlate multiple potential angles of inclination of an elongated conduit to respective threshold differential pressures between two spaces which generate net flow of fluid sufficient to cause a lightweight ball to move from one region of the conduit to an opposing region. The elongated conduit may be adjustable in length so as to accommodate installation of the device into walls of varying thickness. The device may include a sound attenuator that reduces noise upon impact of the ball with either end of the conduit. The device may also include a sealing material that is flexible yet firm enough to provide both a seal with the exterior surface of the conduit and support for the conduit when oriented in a tilted configuration.

Methods and apparatuses for indicating the presence of a directional differential pressure between separated adjacent spaces are provided. A differential pressure set point indicator may be configured to correlate multiple potential angles of inclination of an elongated conduit to respective threshold differential pressures between two spaces which generate net flow of fluid sufficient to cause a lightweight ball to move from one region of the conduit to an opposing region. The elongated conduit may be adjustable in length so as to accommodate installation of the device into walls of varying thickness. The device may include a sound attenuator that reduces noise upon impact of the ball with either end of the conduit. The device may also include a sealing material that is flexible yet firm enough to provide both a seal with the exterior surface of the conduit and support for the conduit when oriented in a tilted configuration.

Devices, systems and methods for obtaining data representative of the condition of an air filter media of an air filter installed in a powered air-handling system, and for using such data to present an indication of the air filter media condition to a user. The devices, systems and methods use pressure information representative of at least a downstream pressure of the powered air-handling system.

Devices, systems and methods for obtaining data representative of the condition of an air filter media of an air filter installed in a powered air-handling system, and for using such data to present an indication of the air filter media condition to a user. The devices, systems and methods use pressure information representative of at least a downstream pressure of the powered air-handling system.