Patent application number | Description | Published |
20090079140 | Device for sealing sensor and sensor element - An air mass sensor arrangement is disclosed. The air mass sensor arrangement includes a duct having a recess and an outer face; a sensor comprising a main body and a baseplate extending radially outward from the main body, the sensor being releasably attached to the duct by a screw connection so that the main body is partially inserted into the recess and the baseplate faces the outer face; and a sealing arrangement disposed around the recess for sealing between the duct and the sensor. The sealing arrangement includes a first web formed on one of the baseplate and the outer face and completely surrounding the recess. | 03-26-2009 |
20100059022 | Method, Device, and System for Operating an Internal Combustion Engine - A device and a method for operating an internal combustion engine having at least one cylinder and a tank ventilation system with a line designed to provide pneumatic communication between the tank ventilation system and the at least one cylinder. The line has at least one sensor for determining a hydrocarbon content of a gas flow. A determination, as a function of a measurement signal from the sensor, of a hydrocarbon content of a gas flow flowing from the tank ventilation system to the at least one cylinder is performed. At least one characteristic variable for a fuel quantity to be metered is determined as a function of the determined hydrocarbon content. A metering of fuel into the cylinder is determined as a function of the at least one determined characteristic variable. | 03-11-2010 |
20100186482 | Sensor for Measuring Hydrocarbon Content in a Flow of Gas in a Purge Line - A sensor for the measurement of the hydrocarbon content in a flow of gas in a purge line. The sensor can measure the hydrocarbon content in the flow of gas in the purge line from a hydrocarbon storage device to an internal combustion engine. The sensor has at least one heating element and at least one thermal detector, with the heating element heating the flow of gas while the thermal detector determines the temperature of the flow of gas, which temperature is evaluated as a measurement of the hydrocarbon content in the flow of gas. | 07-29-2010 |
20110011154 | METHOD FOR THE ON-BOARD FUNCTIONAL DIAGNOSIS OF A SOOT SENSOR IN A MOTOR VEHICLE AND/OR FOR THE DETECTION OF FURTHER CONSTITUENTS IN THE SOOT - A method for on-vehicle functional diagnosis of a soot sensor and/or for detecting further components in the soot in a motor vehicle having an internal combustion engine, the soot sensor connected electrically to an evaluation circuit. To specify a method for functional diagnosis of a soot sensor and/or for detecting further components in the soot, by which it is possible to detect a faulty soot sensor and/or further components in the soot in an economical manner, the evaluation circuit measures a temperature coefficient of the soot sensor and detects the faultiness of the soot sensor and/or the presence of further components in the soot from the temperature coefficient of the soot sensor. | 01-20-2011 |
20110015824 | METHOD FOR THE ON-BOARD FUNCTIONAL DIAGNOSIS OF A SOOT SENSOR IN A MOTOR VEHICLE AND/OR FOR THE DETECTION OF FURTHER CONSTITUENTS IN THE SOOT - A method for the on-board functional diagnosis of a soot sensor and detection of further constituents in the soot in a motor vehicle having an internal combustion engine. The soot sensor is connected electrically to an evaluation circuit in the motor vehicle. A faulty soot sensor and/or further constituents in the soot can be detected in an inexpensive way. The evaluation circuit measures the voltage coefficient of the soot sensor and detects the defectiveness of the soot sensor and/or the presence of further constituents in the soot using the voltage coefficient of the soot sensor. | 01-20-2011 |
20110088450 | Method For Evaluating the State of A Soot Sensor In A Motor Vehicle - A method for performing on-board functional diagnostics on a soot sensor of a vehicle and/or for detecting further components in the soot in a motor vehicle having an internal combustion engine. The soot sensor is electrically connected to an evaluation circuit with is permanently installed in the motor vehicle. In order to specify a method for performing functional diagnostics on a soot sensor and/or for detecting further components in the soot, with which method it is possible to detect a faulty soot sensor and/or further components in the soot in a cost-effective way, the evaluation circuit measures the temperature coefficient of the soot sensor and detects the defectiveness of the soot sensor and/or the presence of further components in the soot on the basis of the temperature coefficient of the soot sensor. | 04-21-2011 |
20110126611 | Hydrogen Sensor and A Detection Method for Hydrogen Concentration - A hydrogen sensor includes a support having a first temperature sensor, a heating element and an evaluation unit. The hydrogen sensor furthermore includes a mass flow reduction apparatus by which a gas mass flow over the first temperature sensor and the heating element is reduced. The evaluation unit determines a hydrogen concentration in a gas or gas mixture based on a first temperature detected by the first temperature sensor. A detection method for hydrogen concentration having the hydrogen sensor and a motor vehicle having a fuel cell drive having the hydrogen sensor. | 06-02-2011 |
20110137540 | Internal Combustion Engine and Method for Operating an Internal Combustion Engine of Said Type - During the operation of an internal combustion engine which has at least one sensor for measuring a hydrocarbon content and a mass flow rate of a gas flow through a line, the hydrocarbon content and the mass flow rate of the gas flow are determined. The gas flow through the line is controlled as a function of the determined values. | 06-09-2011 |
20110156727 | Soot Sensor - A soot sensor for the detection of soot particles in an exhaust gas flow, having interdigitally engaged measurement electrodes applied on a substrate. An electrical resistance between the measurement electrodes is a measure of soot load of the exhaust gas flow. The measurement electrodes are divided into two regions, a first region in which no soot particles can be deposited and a second region where soot particles are deposited from the exhaust gas flow. The first region and the second region are exposed simultaneously to the other conditions prevailing in the exhaust gas flow. | 06-30-2011 |
20110168139 | Apparatus for Measuring a Hydrocarbon Concentration and Internal Combustion Engine - An apparatus for measuring a hydrocarbon concentration of a gas stream in a line includes at least one sensor for measuring a hydrocarbon concentration, the position of said sensor being set off in relation to the line. | 07-14-2011 |
20110174276 | Internal Combustion Engine and Method for Opertating an Internal Combustion Engine of this Type - During operation of an internal combustion engine system which has at least one sensor for measuring a hydrocarbon content of a gas stream in a line, a temperature is determined at the at least one sensor. If the temperature is greater than a prespecified temperature, the flow of gas through the line is interrupted. | 07-21-2011 |
20110226804 | Method for rapidly emptying the activated carbon filter while using an HC sensor (concentration change) - A method for rapidly emptying an activated carbon filter while using an HC sensor (concentration change). A device for a tank system, for a motor vehicle having the device for a tank system and to a method for emptying an activated carbon filter for a tank system. The concentration of volatile components which are flushed from the activated carbon filter is detected by a concentration sensor. The concentration sensor is used as an early warning sensor to prevent any disturbances of mixture production of an engine. | 09-22-2011 |
20110289999 | Method and Device for Calibrating a Sensor - A tank ventilation system having an intake tract, the tank ventilation system including a hydrocarbon reservoir, a sensor, and a valve. The valve and the sensor are arranged in a fluid line that couples the hydrocarbon reservoir to the intake tract. The sensor captures a hydrocarbon concentration of a fluid in the fluid line. A captured value of the hydrocarbon concentration is measured using the sensor. When the open valve, a mass flow of the fluid flowing through the fluid line into the intake tract is captured or determined. An air/fuel ratio of an air/fuel mixture fed to the internal combustion engine is determined. An estimated value of the hydrocarbon concentration in the fluid line is determined according to the mass flow of the fluid and the air/fuel ratio. The sensor is calibrated according to the captured value of the hydrocarbon concentration and the estimated value of the hydrocarbon concentration. | 12-01-2011 |
20110300787 | Tank Ventilation System - A tank ventilation system includes a flushing line, off which a bypass branches and into which the bypass opens out. A sensor is arranged in the flushing line bypass to determine a concentration of hydrocarbons in a fluid in the flushing line. A hydrocarbon tank is coupled via a first connector to a first end of the flushing line and designed for coupling, via a second coupling, to a tank. | 12-08-2011 |
20120102924 | Method And Device For Measuring The Soot Load In The Exhaust Gas Systems Of Diesel Engines - A method and device for measuring the soot load in the exhaust gas systems of diesel engines using a sensor which is mounted downstream of a particulate filter and comprises a sensor element, to measure the operability of the particulate filter. According to the method, the soot load of the sensor element is measured resistively or capacitively using electrodes. The measuring voltage of the sensor element is controlled depending on at least one actual operating parameter of the diesel engine. | 05-03-2012 |
20120255340 | Method And Device For Operating A Particle Sensor - A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes. | 10-11-2012 |
20130090866 | DIAGNOSTIC METHOD FOR A SOOT SENSOR - A diagnostic method for a soot sensor that lies in an exhaust gas system of an internal combustion engine. First, a first temperature in the exhaust gas system is detected, and it is determined whether the detected first temperature is below a 100° C. If this is the case, a first measured value is then detected with the soot sensor and compared with a specifiable threshold value. If the first measured value exceeds the specifiable threshold value, the soot sensor is determined to be operating properly. | 04-11-2013 |
20130145844 | SENSOR MODULE AND PRODUCTION METHOD OF A SENSOR MODULE - A sensor module and method for producing the sensor module including a chip carrier and a sensor chip disposed thereon. The sensor module includes at least one partial cover having a recess on a second face of the chip carrier, such that heat from the chip carrier and/or the sensor chip can be dissipated to the recess. | 06-13-2013 |
20130187295 | SENSOR MODULE, PRODUCTION METHOD OF A SENSOR MODULE, AND INJECTION MOLD FOR ENCAPSULATING A SENSOR MODULE - A sensor module an injection mold for covering the sensor module, and to a production method for a covered sensor module including a chip carrier and a sensor chip disposed thereon. A channel is formed between the chip carrier and the sensor chip, by which a medium can be fed to the sensor chip. | 07-25-2013 |
20130283887 | METHOD FOR OPERATING A SOOT SENSOR - A method for operating a soot sensor in the exhaust gas tract of an internal combustion engine. The soot sensor includes an inter-digital electrode structure to which a measurement voltage is applied. Soot particles from the exhaust gas flow deposit themselves on the inter-digital electrode structure and an measuring current is evaluated as a measurement for the soot concentration of the soot sensor. A heating element for burning clean the inter-digital electrode structure is provided. The method for operating the soot sensor has good measurement results and the shortest possible idle time. To this end, a point in time for burning clean the soot sensor is determined in accordance with the operational state of the internal combustion engine and then, the burning clean of the inter-digital electrode structure starts by heating the soot sensor by the heating element. | 10-31-2013 |
20130298640 | METHOD FOR OPERATING A SOOT SENSOR - A method for operating a soot sensor that has an interdigital electrode structure, to which a measurement voltage is applied. Soot particles from an exhaust gas flow are deposited onto the interdigital electrode structure and the measurement current is evaluated as a measure of the soot load of the soot sensor. The interdigital electrode structure is burned clean at or above a predetermined soot load, which is detected by means of an upper current threshold. The method includes burning the interdigital electrode structure clean by heating up the soot sensor after the upper current threshold has been reached; monitoring the measurement current while the interdigital electrode structure is being burned clean; and stopping the burning clean when the value of the measurement current has reached a lower current threshold. | 11-14-2013 |
20140053642 | METHOD AND DEVICE FOR MEASURING THE ROTATIONAL SPEED OF A TURBOCOMPRESSOR, AND MOTOR VEHICLE - A method and a device for measuring the rotational speed of a turbocompressor, in particular a turbocharger of a motor vehicle. A frequency of pressure pulses generated in the medium the blades or by the shaft of the turbocompressor is measured using high-frequency signal portion of a pressure sensor, and the turbocompressor rotational speed is ascertained from the measured pressure pulse frequency. Furthermore, the charge pressure of the turbocompressor can be ascertained from the low-frequency signal of the pressure sensor so that a single sensor is sufficient for both measurements. The pressure sensor can be arranged in the intake system downstream of the compressor, upstream or downstream of an intercooler. | 02-27-2014 |