Patent application number | Description | Published |
20100267054 | Measuring The Activity Of Proteases - A method and apparatuses for determining the total content of proteases by means of measuring their enzyme activity after previous deinhibition is disclosed. In biological samples, lysosomal proteases are completely (e.g. in blood serum) or partly (e.g. in tissue homogenates) inhibited. A method proposed for the deinhibition entails immersing a solid support material (e.g. nylon or nitrocellulose) as plastic strip to which is linked, covalently or by adsorption, an inhibitor-binding substance which binds the inhibitor corresponding to the protease more strongly than the protease in the sample for measurement. After the deinhibition has taken place, the plastic strip is removed from the liquid sample for measurement, and the sample for measurement is passed on for measurement of the enzyme activity. Fluorogenic substrates from which the fluorogen 7-amino-4-trifluoromethylcoumarin is eliminated proved to be particularly advantageous for the activity measurement. These substrates make it possible for the sensitivity on measurement in microtitre plates with a fluorescence reader to be at least 10 times higher compared with conventional AMC substrates in blood serum, and thus for the fluorimetric determination of such enzyme activities in blood serum to be efficient with this measuring arrangement which is widely used in clinical laboratories. | 10-21-2010 |
20130260391 | Method Of Determining The Protease Cathepsin B In A Biological Sample - A method for determination of the potentially available activity of cathepsin B in a biological sample, including the activity of the active form of cathepsin B, the form of cathepsin B which can be activated from the pro-form procathepsin B being present in the sample, and the form of cathepsin B which can be activated and which is inhibited in the sample in its activity by protease inhibitor, whereby the procathepsin B being present in the sample is converted into the active form of cathepsin B, the free protease inhibitor for cathepsin B being present in the sample is depleted from the sample or its inhibitor function is suppressed, and the protease inhibitor is withdrawn from the inhibited form of cathepsin B, and subsequently the activity of the active cathepsin B in the sample is determined. | 10-03-2013 |
Patent application number | Description | Published |
20080203341 | Electrically Controlled Valve - An electrically controlled valve, in particular for the variable adjustment of the damper characteristic curve of a vibration damper, comprising a magnetic drive for actuating a valve slide that is guided in a housing in one moving direction, as well as a passage arranged in the housing between a valve inlet and a valve outlet for the variable volume flow control, the passage cooperating with a control edge of the valve slide. The moving direction of the valve slide is electrically reversible, thereby resulting in a comparatively simple mechanical layout for the valve for variably controlling the characteristic curve of the valve. | 08-28-2008 |
20080283135 | Electrically Controllable Valve - Disclosed is an electrically controllable valve accommodating in its valve housing ( | 11-20-2008 |
20090250923 | Unit With At Least Two Hydraulic Connections Fastened To It - An electrohydraulic unit assembly for a motor vehicle comprising a receiving body defining a sealing face and at least two connectors fastened to the receiving body of the unit, oriented substantially parallel one to another and separated by a defined distance from one another. Each connector is configured for connecting a fluid conduit to the unit. Each connector includes a screw fitting for fastening the respective hydraulic connection to the receiving body of the unit such that a sealing face of the screw fitting or a sealing face of the fluid conduit is seated on the sealing face of the receiving body. Each screw fitting is rotatably connected to the body and includes two spanner flat portions having different spanner widths. | 10-08-2009 |
20100117448 | BRAKING SYSTEM FOR MOTOR VEHICLES - In order to embody an electrohydraulic brake system of the brake-by-wire type in a way which is optimized in terms of installation space, it is proposed that a booster device for boosting the activation force which is transmitted to a pressure sensor by the brake pedal is composed of a booster module, which is connected upstream of the pressure sensor, and of a hydraulic pressure source, and in that the pressure sensor forms, with the booster module, a first functionally capable assembly which can be handled independently, and a pressure source, an electronic open-loop and closed-loop control unit and a valve block which accommodates the pressure control valves form a second functionally capable assembly which can be handled independently and which is arranged spatially separate from the first assembly. | 05-13-2010 |
20100282549 | Externally Controllable Electrohydraulic Vehicle Brake System - An externally actuable electrohydraulic vehicle brake system including an externally actuable electrohydraulic vehicle system with slip control. In order to make available a brake system which permits highly dynamic pressure build-up processes without throttling effects in the suction path, in particular through a master cylinder, being adversely affected, it is proposed that the hydraulic pump be assigned means which permit the hydraulic pump additionally to drive a hydraulic charging device which is connected to an inlet of the hydraulic pump. | 11-11-2010 |
20130008544 | PULSATION DAMPENING CAPSULE - A pulsation damping capsule for connection to the pressure side of a piston pump having a metal membrane housing that is assembled from two membrane shells joined together in a hermetically sealed manner. The metal membrane housing separates an internal space from a surrounding pressure medium. The membrane shells are connected along a circumferential seam such that the pulsation damping capsule can compress and expand in a resilient-elastic manner as an energy convertor when subjected to external pressure as a result of pressure medium pulses. A reshapeable mass is arranged in the internal space and when the membrane shells are in the resilient-elastically compressed state, the mass completely fills an intermediate space that remains between the two membrane shells, so that the mass is precisely matched to the internal contour of the reshaped membrane shells while avoiding the formation of hollow spaces. | 01-10-2013 |
20140028084 | Brake System for Motor Vehicles - A motor vehicle brake system operable in a brake-by-wire and fallback modes. The system includes a brake pedal ( | 01-30-2014 |
20140203626 | Brake System for Motor Vehicles and Method for Operating a Brake System - A brake system includes a hydraulic actuating unit, which can be actuated by way of a brake pedal, a travel simulator interacting with the hydraulic actuating unit, a pressure medium reservoir under atmospheric pressure assigned to the hydraulic actuating unit, a first electrically controllable pressure supply device, a second electrically controllable pressure supply device, an electronic control unit and an electronically controllable pressure modulation device for setting wheel-specific brake pressures. The brake system preferably operates in a “brake-by-wire” mode but can also operate in a fallback mode. The second electrically controllable pressure supply device can provide boost volume during braking in a fallback mode. | 07-24-2014 |
20140216866 | Brake Actuating Unit - A brake actuating unit ( | 08-07-2014 |
20150020520 | METHOD FOR CALIBRATING ANALOG-CONTROLLED HYDRAULIC VALVES AND BRAKE SYSTEM COMPRISING AN ELECTRONIC CONTROL AND REGULATING UNIT IN WHICH THE METHOD IS CARRIED OUT - A method for determining a driving characteristic of an analogized or analog-controlled hydraulic valve of a motor vehicle hydraulic brake system in which a brake pressure generated with the aid of an electrically controllable, electric-motor-driven pressure supply device, is conducted to a wheel brake via an inlet valve and can be conducted via an outlet valve from the wheel brake into a pressure medium container. The pressure supply device and the inlet valves, and outlet valves, can be controlled by an electronic control unit. For determining the control characteristic of an analogized or analog-controlled inlet or outlet valve, a brake pressure is generated by the control unit via the pressure supply device, and the brake pressure is determined by a pressure sensor associated with the pressure supply device. The determined brake pressure and an associated valve control variable are stored as a calibration point of the control characteristic. | 01-22-2015 |
20150021978 | METHOD FOR OPERATING A BRAKE SYSTEM, AND BRAKE SYSTEM - A method and system for operating a brake system for motor vehicles, including a plurality of wheel brakes for which wheel-individual nominal pressure includes an electrically controllable pressure supply device, to provide a brake system pressure for actuating the wheel brakes. The brake system pressure provided by the pressure supply device can be determined. An electrically controllable inlet valve and electrically controllable outlet valve per wheel brake adjust wheel-individual brake pressures. At least one outlet valve is analogized for analog-controlled and is controlled by an electric control variable, wherein at least one valve-specific control characteristic and/or a valve-specific parameter is determined for the analogized or analog-controlled outlet valve by the brake system, and wherein the analogized or analog-controlled outlet valve is controlled as a function of the valve-specific control characteristic and/or the valve-specific parameter for the degradation of the brake pressure in the wheel brake associated with the outlet valve. | 01-22-2015 |
20150025767 | METHOD FOR OPERATING A BRAKE SYSTEM FOR MOTOR VEHICLES, AND BRAKE SYSTEM - A method and system for operating a motor vehicle brake system, including several wheel brakes, an electrically controllable pressure supply device, dispenses a pressure medium volume for actuating the brakes, and an analogized or analog-controlled inlet valve, arranged in each wheel brake between the pressure supply device and wheel brake, for adjusting wheel-individual brake pressures. A check valve is connected in parallel to each inlet valve. At the start of a wheel-individual brake pressure control, all inlet valves are closed, and a pressure build-up is carried out in a predetermined group of one or more wheel brakes by displacing a pressure medium volume into the predetermined group of wheel brakes by the pressure supply device. Each inlet valve of the predetermined group is controlled such that the inlet valve is overflowed, wherein each inlet valve of the remaining wheel brakes is controlled such that the inlet valve remains closed. | 01-22-2015 |
20150224972 | Braking System for Motor Vehicles and Method for the Operation of a Braking System - A motor vehicle braking system and method operable in a brake-by-wire mode and independently of the driver, with a master brake cylinder ( | 08-13-2015 |
Patent application number | Description | Published |
20080265805 | Method and Apparatus for Operation of a Piezo-Actuator - A piezo-actuator is actuated in a first operating mode (B | 10-30-2008 |
20100063709 | METHOD AND DEVICE FOR OFFSETTING BOUNCE EFFECTS IN A PIEZO-ACTUATED INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - The invention relates to a method and a device for offsetting bounce effects in a piezo-actuated injection system of an internal combustion engine using a control valve actuated by a piezoelectric actuator. The inventive method comprises the following steps: detecting an actual bounce behavior of the control valve, and determining and offsetting a deviation between the actual bounce behavior and a desired bounce behavior of the control valve, thereby generating an actuation information for the control valve which influences a speed characteristic of a needle of the control valve. The invention also relates to a device for carrying out the inventive method. | 03-11-2010 |
20100223985 | Method And Device For Dynamically Determining A Segment For An Angular Spread, Inside Which Fuel is Injected Into An Internal Combustion Engine - In a method and a device for dynamically determining a segment for an angular spread, fuel is injected into an internal combustion engine and the useful injection range (IRu) and/or the relative position of the segment comprising the angular spread, in which a fuel injection can be carried out especially during a multiple injection, are variable. A corresponding adaptation of the useful injection range (IRu) can advantageously trigger a subsequent injection impulse, as required, for example, for a regeneration module of a diesel particle filter. The adaptation is carried out according to an operating parameter, for example according to the rotational speed gradient. | 09-09-2010 |
20100268440 | METHOD AND DEVICE FOR THE CALIBRATION A PIEZO-ACTUATOR THAT IS ACTUATED IN A MOTOR VEHICLE FOR DRIVING A SWITCHING VALVE - In a method for calibration, a piezo-actuator ( | 10-21-2010 |
20100288238 | METHOD AND DEVICE FOR FORMING AN ELECTRIC CONTROL SIGNAL FOR AN INJECTION IMPULSE - In a method or a device for forming an electric control signal for an injection impulse of a position-controlled fuel injector, particularly of a common-rail or pump-nozzle injection system, he course of the electric control signal can be selected freely in regard to the pulse edges (injection rate changes Q), the holding period (Δt) and the injection rate (Q). This offers the advantage that the combustion process can be better optimized with respect to low emissions, low consumption and for meeting tightened legal regulations. | 11-18-2010 |
20130133748 | METHOD AND DEVICE FOR DETERMINING THE ACTUAL START OF INJECTION OF A PIEZO FUEL INJECTION VALVE - A method for determining the actual start of injection is performed by an actuating device for a piezo fuel injection valve and includes the following steps. First, a test injection is carried out with such a short actuation duration that a start of shut-off takes place at a time so early that the nozzle needle does not reach the open end position. Said time is predefined by the actuation and is therefore precisely known. Next, the closing time of the nozzle needle is then determined by measurement and evaluation of an electrical variable of the piezo direct drive. Once the closing time and the time of the start of shut-off are known, the actual start of injection is calculated back from the closing time via the start of shut-off. This permits an adequately precise determination of the actual injection quantity in almost every operating state of the internal combustion engine. | 05-30-2013 |
20130239929 | Method for Actuating a Piezo Injector of a Fuel Injection System - A method for actuating a piezoelectric actuator and a piezo injector of a fuel injection system having a nozzle needle which can be moved between the closed position and an open position by the piezoelectric actuator are disclosed. Current is applied to the piezoelectric actuator from a source for the duration of a charging time as a function of a required quantity of fuel, in order to move the nozzle needle into its opened position for a time period which is dependent on the required quantity of fuel. The charging time is selected according to the following relationships: t | 09-19-2013 |
20140034747 | Method For Detecting A Nozzle Chamber Pressure In An Injector And Injection System - A method is disclosed for detecting a nozzle chamber pressure in an injector that includes a closure element for opening and closing an injection opening, at least one actuator which directly actuates the closure element, and at least one sensor for measuring a state, which is dependent on the nozzle chamber pressure, of the closure element, wherein at least one measurement variable which is dependent on the state is detected by means of the sensor, and wherein a deviation of the measurement value from a predefined value is determined. An injection system for carrying out such method is also disclosed. | 02-06-2014 |
20140263692 | Method for Monitoring an Injection Fluid Quantity and Injection System for Injecting an Injection Fluid Quantity - A method for monitoring an injection fluid quantity, which is injected through an injection nozzle, includes opening and closing said injection nozzle by a closure element guided in one movement, detecting at least three characteristic points of the movement of the closure element at which the closure element is located at a certain position, and calculating the injection quantity from the at least three detected characteristic points. | 09-18-2014 |
20140346244 | Control Method For An Injection Valve And Injection System - A control method for a fuel injection valve for an internal combustion engine is disclosed, wherein at least one control signal for actuating a drive of the injection valve is generated in recurring injection cycles and as a function of a target stroke height of a closing element of the injection valve, wherein the drive is actuated by the control signal to lift the closing element to the target stroke height and the closing element is lifted to an actual stroke height by means of the drive, wherein at least one measured parameter correlated with the actual stroke height is captured and the actual stroke height is determined as a function of said at least one measured parameter, wherein the control signal is generated in at least one of the subsequent injection cycles as a function of a deviation of the actual stroke height from the target stroke height. | 11-27-2014 |
Patent application number | Description | Published |
20100063709 | METHOD AND DEVICE FOR OFFSETTING BOUNCE EFFECTS IN A PIEZO-ACTUATED INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - The invention relates to a method and a device for offsetting bounce effects in a piezo-actuated injection system of an internal combustion engine using a control valve actuated by a piezoelectric actuator. The inventive method comprises the following steps: detecting an actual bounce behavior of the control valve, and determining and offsetting a deviation between the actual bounce behavior and a desired bounce behavior of the control valve, thereby generating an actuation information for the control valve which influences a speed characteristic of a needle of the control valve. The invention also relates to a device for carrying out the inventive method. | 03-11-2010 |
20100223985 | Method And Device For Dynamically Determining A Segment For An Angular Spread, Inside Which Fuel is Injected Into An Internal Combustion Engine - In a method and a device for dynamically determining a segment for an angular spread, fuel is injected into an internal combustion engine and the useful injection range (IRu) and/or the relative position of the segment comprising the angular spread, in which a fuel injection can be carried out especially during a multiple injection, are variable. A corresponding adaptation of the useful injection range (IRu) can advantageously trigger a subsequent injection impulse, as required, for example, for a regeneration module of a diesel particle filter. The adaptation is carried out according to an operating parameter, for example according to the rotational speed gradient. | 09-09-2010 |
20100268440 | METHOD AND DEVICE FOR THE CALIBRATION A PIEZO-ACTUATOR THAT IS ACTUATED IN A MOTOR VEHICLE FOR DRIVING A SWITCHING VALVE - In a method for calibration, a piezo-actuator ( | 10-21-2010 |
20100288238 | METHOD AND DEVICE FOR FORMING AN ELECTRIC CONTROL SIGNAL FOR AN INJECTION IMPULSE - In a method or a device for forming an electric control signal for an injection impulse of a position-controlled fuel injector, particularly of a common-rail or pump-nozzle injection system, he course of the electric control signal can be selected freely in regard to the pulse edges (injection rate changes Q), the holding period (Δt) and the injection rate (Q). This offers the advantage that the combustion process can be better optimized with respect to low emissions, low consumption and for meeting tightened legal regulations. | 11-18-2010 |
20130133748 | METHOD AND DEVICE FOR DETERMINING THE ACTUAL START OF INJECTION OF A PIEZO FUEL INJECTION VALVE - A method for determining the actual start of injection is performed by an actuating device for a piezo fuel injection valve and includes the following steps. First, a test injection is carried out with such a short actuation duration that a start of shut-off takes place at a time so early that the nozzle needle does not reach the open end position. Said time is predefined by the actuation and is therefore precisely known. Next, the closing time of the nozzle needle is then determined by measurement and evaluation of an electrical variable of the piezo direct drive. Once the closing time and the time of the start of shut-off are known, the actual start of injection is calculated back from the closing time via the start of shut-off. This permits an adequately precise determination of the actual injection quantity in almost every operating state of the internal combustion engine. | 05-30-2013 |
20130239929 | Method for Actuating a Piezo Injector of a Fuel Injection System - A method for actuating a piezoelectric actuator and a piezo injector of a fuel injection system having a nozzle needle which can be moved between the closed position and an open position by the piezoelectric actuator are disclosed. Current is applied to the piezoelectric actuator from a source for the duration of a charging time as a function of a required quantity of fuel, in order to move the nozzle needle into its opened position for a time period which is dependent on the required quantity of fuel. The charging time is selected according to the following relationships: t | 09-19-2013 |
Patent application number | Description | Published |
20090162658 | Process for the preparation of nanocrystalline hydrotalcite compounds - The present invention relates to a process for the preparation of nanocrystalline hydrotalcite compounds comprising the steps: introduction of one or more starting compounds into a reaction chamber by means of a carrier fluid, subjecting the starting compound(s) in a treatment zone to a pulsating thermal treatment at a temperature of 250 to 400° C., formation of nanocrystalline metal-oxide particles, discharging of the nanocrystalline hydrotalcite particles from the reactor, wherein the starting compound(s) are introduced into the reaction chamber in the form of a solution, slurry, suspension or in solid aggregate state, and a nanocrystalline hydrotalcite material obtainable by the process according to the invention and its use as an adsorption and catalyst material. | 06-25-2009 |
20090325794 | PROCESS FOR THE PREPARATION OF NANOCRYSTALLINE METAL OXIDES - The present invention relates to a process for the preparation of nanocrystalline metal oxide particles comprising the steps of a) the introduction of a starting compound into a reaction chamber by means of a carrier fluid, b) the subjecting of the starting compound in a treatment zone to a pulsating thermal treatment, c) the forming of nanocrystalline metal oxide particles, d) the removal of the nanocrystalline metal oxide particles obtained in steps b) and c) from the reactor, wherein the starting compound is introduced into the reaction chamber in the form of a solution, slurry, suspension or in solid aggregate state. Further, the present compound relates to a catalyst material, obtainable by the process according to the invention, in particular a catalyst material for use in the preparation of methanol from carbon monoxide and hydrogen. | 12-31-2009 |
20100015446 | PROCESS FOR PREPARING NANOCRYSTALLINE MIXED METAL OXIDES - The present invention relates to a process for the preparation of nanocrystalline mixed metal oxide particles from at least two different starting compounds, comprising the steps of
| 01-21-2010 |
20100137650 | SHELL CATALYST, PROCESS FOR ITS PREPARATION AND USE - The present invention relates to a shell catalyst, a process for its preparation and also the use of the shell catalyst according to the invention. | 06-03-2010 |
20110092734 | METHOD FOR THE PRODUCTION OF NANOCRYSTALLINE BISMUTH-MOLYBDENUM MIXED OXIDE - A method for the production of a nanocrystalline bismuth-molybdenum mixed oxide, the use of the bismuth-molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of propylene to acrolein and/or acrylic acid or of isobutylene to methacrolein and/or methacrylic acid, as well as a catalyst that contains the bismuth-molybdenum mixed oxide. | 04-21-2011 |
20110105790 | METHOD FOR THE PRODUCTION OF A NANOCRYSTALLINE MOLYBDENUM MIXED OXIDE - A method for the production of a nanocrystalline molybdenum mixed oxide, the use of the molybdenum mixed oxide as catalyst for chemical conversions, in particular for a conversion of acrolein to acrylic acid as well as a catalyst that contains the molybdenum mixed oxide. | 05-05-2011 |
20130041193 | METHOD FOR PRODUCING A COMPOSITE MATERIAL - A method for producing a composite material which contains a support material and an ionic liquid, as well as a composite material and its use as synthetic catalyst. | 02-14-2013 |