| 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 |
