Patent application number | Description | Published |
20090064758 | METHOD FOR DETERMINING A GAS CONCENTRATION IN A MEASURING GAS BY MEANS OF A GAS SENSOR - The invention relates to a method for determining a gas concentration in a measuring gas by means of a gas sensor. In a first mode of operation of an internal combustion engine, in which the gas concentration in the measuring gas is known, a gas concentration signal and a pressure signal are detected. A compensation parameter of the gas sensor is determined from said signals. The thus determined compensation parameter is taken into account in at least one of the two modes of operation of the internal combustion engine for determining the gas concentration. | 03-12-2009 |
20110106409 | METHOD AND DEVICE FOR THE PRESSURE WAVE COMPENSATION DURING CONSECUTIVE INJECTIONS IN AN INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A method and a device for controlling an injection system of an internal combustion engine are described, in which at least two consecutive partial injections are compensated for using pressure wave compensation, it is provided in particular that two test injections having a specified time interval to one another are triggered in a cylinder of the internal combustion engine, the total injection quantity of the at least two partial injections is ascertained, and a deviation between the ascertained total injection quantity and an expected total injection quantity is assumed as the error of the pressure wave compensation and a correction value for the pressure wave compensation is determined therefrom. | 05-05-2011 |
20130325300 | Method for operating an internal combustion engine - A method for operating an internal combustion engine, in particular of a motor vehicle, is described. The internal combustion engine includes an injector for metering fuel into a combustion chamber. According to the method, the injector is opened during a control period for metering a fuel quantity. A change in a rotary motion of the internal combustion engine, which results from the fuel quantity, is ascertained. A function is ascertained which links the control period to the change in the rotary motion. A minimum control period during which the injector does not open just yet is ascertained with the aid of the function. An operating point-dependent control period of the injector is ascertained as a function of the minimum control period. | 12-05-2013 |
20150034048 | METHOD AND DEVICE FOR ZERO-FUEL QUANTITY CALIBRATION OF A FUEL INJECTOR - In a method for calibrating a fuel metering system including an injector of an internal combustion engine performing a pilot injection chronologically prior to a main injection, at least two test injections chronologically prior to the pilot injection are provided for the injector, the first test injection being carried out using a first activation duration, in which the injector does not yet open, at least one second test injection being carried out in a subsequent injection cycle using an activation duration which is progressively increased in each case in relation to the first test injection until a change of an operating variable of the fuel metering system or the internal combustion engine results, which activation duration corresponds to a minimum activation duration of the injector. | 02-05-2015 |
20150053179 | METHOD FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE - A method for controlling an internal combustion engine includes: using the pressure sensor method, determining for a first injector a first control period during which a desired quantity of fuel is injected into a lead cylinder; controlling the first injector with the first control period and entering a quantity replacement signal resulting therefrom into a training characteristic field as a function of the drive train parameters; and using null quantity calibration, varying for all further cylinders a control period of the injectors assigned to the cylinders until the quantity replacement signal is reached. | 02-26-2015 |
Patent application number | Description | Published |
20090046148 | Method for Identifying Soiling On a Transparent Screen - Camera for identifying soiling on a protective screen. The camera is focused on a scene behind the protective screen and can be used to identify soiling and for other applications, e.g. to identify driving lanes and/or to identify objects. Soiling is identified merely by evaluating frames recorded in succession, artificial reference frames or reference objects are not required. A prerequisite for a successful measurement is that the relative speed v | 02-19-2009 |
20090089002 | Method for the Calibration of a Yaw Rate Measurement - The invention relates to a method for the calibration of yaw rate measurement in a motor vehicle, wherein the motor vehicle features at least one device for determining the yaw rate, a camera system which is in the forward-position, and, if applicable, a steering angle sensor. At least one initial calibration is carried out at a standstill and at least one second calibration is carried out when the motor vehicle is moving. | 04-02-2009 |
20100295705 | METHOD FOR DISTINGUISHING BETWEEN REFLECTORS ARRANGED ON THE ROADSIDE AND VEHICLE LIGHTS IN THE DARK - A method and a device for distinguishing between reflectors arranged on the roadside and vehicle lights and for identifying said reflectors and vehicle lights for use in an automatic light control system in a vehicle with a camera sensor oriented towards the surroundings of the vehicle. The method includes recording a sequence of images of the surroundings of the vehicle. Light spots are found and subjected to temporal tracking within the sequence of images. Afterwards, for each light spot, a decision is made whether the light source of the light spot is a vehicle light or a reflector. A statistical map for the entire camera image is determined from the position of the light spots found with the statistical map comprising regions that are predominantly occupied by reflectors and regions that are predominantly occupied by vehicles driving ahead or by oncoming vehicles. All light sources that are found within the regions occupied by reflectors are identified as potential reflectors and all light sources within the regions occupied by vehicle lights are identified as potential vehicle lights. | 11-25-2010 |
20100296700 | METHOD AND DEVICE FOR DETECTING THE COURSE OF A TRAFFIC LANE - A method for detecting the course of a traffic lane, including the following steps: | 11-25-2010 |
Patent application number | Description | Published |
20110196648 | Multiturn Rotary Encoder - A multiturn rotary encoder includes a singleturn code disk which is joined in rotatably fixed manner to a shaft and which has a code track that is scannable by a singleturn scanning unit to ascertain the absolute position within one revolution of the shaft, a multiturn unit for measuring revolution data which are suitable for ascertaining the number of revolutions performed by the shaft, and an evaluation unit which is connected to the multiturn unit via at least two digital interfaces for transmitting the revolution data. The revolution data include at least two data words which have a different rate of change during rotation of the shaft, the interface for transmitting the data word having the highest rate of change to the evaluation unit is a parallel interface, and the interface for transmitting the data word having the lowest rate of change to the evaluation unit is a serial interface. | 08-11-2011 |
20110213586 | Device and Method for Transmitting Data Between a Position-Measuring Device and Sequential Electronics - In a device and a method for transmitting data between a position-measuring device and sequential electronics via a data-transmission channel, the position-measuring device includes an interface unit and a processing unit, the interface unit being connected first of all to the data-transmission channel, and secondly, to the processing unit for the purpose of an internal data exchange with the aid of a request channel and a response channel. The interface unit includes a command interpreter by which, using conversion rules, commands which arrive via the data-transmission channel are convertible into internal requests and are able to be fed via the request channel to the processing unit, and response data which arrives from the processing unit via the response channel is convertible into output data. The interface unit further includes a rules memory for storing the conversion rules, which is at least partially modifiable. | 09-01-2011 |
20140344479 | METHOD FOR TRANSFERRING DATA BETWEEN A POSITION-MEASURING DEVICE AND AN ASSOCIATED PROCESSING UNIT AND POSITION-MEASURING DEVICE THEREFOR - A method for transferring data between a position-measuring device and an associated processing unit includes transferring first data having a first priority in successive cycles from the position-measuring device to the processing unit. The successive cycles are in each case initiated by a request command by the processing unit requesting the first data from the position-measuring device. Second data having a second, lower priority is transferred from the position-measuring device to the processing unit in at least a portion of the successive cycles with the first data. Types of the second data being transferred in a respective one of the successive cycles are variable. At least one particular type, of the types of the second data to be transferred, is assigned to individual cycles of the successive cycles using information stored in the position-measuring device without involvement of the processing unit. | 11-20-2014 |
20150088450 | POSITION-MEASURING DEVICE AND METHOD FOR TESTING A CLOCK SIGNAL - A position-measuring device includes a position-sensing unit, a processing unit, an interface unit, a clock generator and a time measurement unit position-sensing unit configured to generate digital position values. The processing unit processes instructions from subsequent electronics. The interface unit communicates with the subsequent electronics, according to rules of an interface protocol, via at least one interface line that transmits interface signals having a temporal behavior that is determined by the interface protocol so as to transmit the instructions from the subsequent electronics to the processing unit. The clock generator generates a clock signal that serves as a time base for functions of the position-sensing unit and the processing unit. The time measurement unit uses the clock signal as a time base, receives at least one interface signal and measures a time interval between a start event and a stop event of the at least one interface signal. | 03-26-2015 |
Patent application number | Description | Published |
20110304734 | METHOD AND APPARATUS FOR OPERATING A VIDEO-BASED DRIVER ASSISTANCE SYSTEM IN A VEHICLE - Disclosed herein is a method for operating a video-based driver assistance system in a vehicle (F), wherein, by using image data recorded by an imaging unit and processed by an image processing unit, a vehicle environment and/or at least one object (O) in the vehicle environment and/or status data are determined. In the determination of the vehicle environment, of the object (O) in the vehicle environment and/or of the status data, a pixel offset (P) present in the image data of consecutive images is determined and compensated for. Also disclosed is an apparatus for operating a video-based driver assistance system in a vehicle (F). | 12-15-2011 |
20120099766 | METHOD AND DEVICE FOR LANE DETECTION - A lane detection method wherein a digitized image of a lane is evaluated, including the following steps: detecting edges in the image, determining the angles of the detected edges with respect to a reference edge, removing the edges from the plurality of detected edges, the angle of which lies within a predetermined angle sector, and detecting the lane based on the remaining edges of the plurality of detected edges. | 04-26-2012 |
20130004067 | METHOD AND DEVICE FOR LANE DETECTION - A method for lane detection, wherein a digitized color image of a roadway is processed using the following steps:
| 01-03-2013 |