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Kleinknecht
Harald Kleinknecht, Alzey DE
| Patent application number | Description | Published |
|---|---|---|
| 20100263156 | WIPER RUBBER FOR WINDSHIELD WIPERS - The invention relates to a wiper rubber for windshield wipers, which contains at least one rubber component that is cured by vulcanization, the material of the wiper rubber containing, at least in the unvulcanized state, a combination of a cross-linking agent with sulfur and/or with a sulfur donor. | 10-21-2010 |
| 20110092358 | VULCANIZATION-ACCELERATING MIXTURE - The present invention relates to a mixture which can be used as vulcanization accelerator, to a process for producing the mixture and to use of the mixture, to vulcanizates which comprise the said mixtures or which comprise corresponding individual constituents of the mixture, and also to vulcanizates which are produced with use of the said mixture. | 04-21-2011 |
Horst Kleinknecht, Fichtenberg DE
| Patent application number | Description | Published |
|---|---|---|
| 20090077949 | PROCEDURE FOR OPERATING A REDUCING AGENT METERING VALVE OF A SCR-EXHAUST GAS PURIFYING SYSTEM - A procedure for dosing a reducing agent into the exhaust gas of an combustion engine with a valve is presented, which shows a solenoid and a movable seal body for adjusting a percolation profile, whose value is depending on the current through the solenoid, whereby the valve is triggered by a current profile, which shows two consecutive sectors. The procedure distinguishes itself in that it is checked in the first sector whether the valve is frozen or whether a danger of freezing exists, and that an electric energy that has been fed into the solenoid with the electric current is set in the second sector depending on the result of the checking. Furthermore a controller is introduced, which is customized for controlling the process of such a procedure. | 03-26-2009 |
| 20100106300 | DEVICE FOR CONTROLLING AN ELECTROMAGNETIC VALVE - In a device for controlling an electromagnetic valve, input device(s) write a multitude of measured values for the current and/or the voltage into a first memory to represent a characteristic. Analysis device(s) perform a state analysis and/or a change-over-time analysis. On the basis of the state analysis and/or the change-over-time analysis, evaluation device(s) correct at least one control variable, which characterizes the control, and write it into a second memory. Control device(s) control an output stage on the basis of the control variables. | 04-29-2010 |
| 20100134120 | PROCEDURE FOR CHECKING THE FUNCTIONALITY OF AN ELECTRIC HEATING DEVICE - A procedure for checking the functionality of an electric heating device ( | 06-03-2010 |
| 20110120559 | Device and method for controlling an electromagnetic valve - In a method for controlling an electromagnetic valve, the temperature of the valve is detected, and activation of and/or the current feed to the valve are performed as a function of the temperature of the valve. | 05-26-2011 |
Horst Kleinknecht, Fichtenburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20090199540 | METHOD FOR OPERATING A REAGENT METERING VALVE AND APPARATUS FOR CARRYING OUT THE METHOD - A method is proposed for operating a metering valve which is realized as a solenoid valve which is actuated by an electromagnet that interacts with an armature which is connected fixedly to a valve needle and, furthermore, is loaded with a pulse-width modulated metering signal which defines the metering of a reagent which is to be introduced into the exhaust-gas region of an internal combustion engine or of a preliminary stage of a reagent, as is an apparatus for carrying out the method. The opening duration of the metering valve is limited to a minimum opening duration, for which the metering valve is opened completely and which is fixed in such a way that a spray mist is always produced during the metering. The procedure according to this invention prevents the reagent from crystallizing and, as a result, firstly ensures exact metering of the reagent and secondly counteracts clogging of the metering valve, in particular if a urea/water solution is provided as preliminary stage of the reagent. | 08-13-2009 |