摘要:
The invention relates to a windshield wiper drive (1) for a motor vehicle, in particular a windshield wiper drive (1), with a reverse-operating drive motor (3), for driving a wiper shaft (6) connected non-rotatably to a wiper arm (18), and with a fastening board (7) for attaching the windshield wiper drive (1) to a vehicle body or to a body-mounted component (29). The invention provides that a first end stop surface (22) for delimiting the rotary movement of the wiper shaft (6) in a first direction of rotation is provided on the fastening board (7) or on a component (29) affixed to the fastening board (7).
摘要:
A method and a circuit for protecting an electric motor and/or its trigger circuit against overload in the emergency-operation mode in a motor vehicle direct-current fan motor operated by means of pulse width modulation, in which the trigger circuit is designed as an emergency-operation controller, with a microcontroller preceding the motor end stage and with a comparator assembly for detecting overvoltages. Overload protection is assured at elevated battery voltage and at the same time when the emergency-operation controller is activated in response to malfunctions in the normal triggering of the electric motor. To that end, at least one overvoltage threshold (Us1, Us2) is defined; when it is exceeded, the power supplied to the motor is reduced or switched off.
摘要翻译:一种用于在通过脉冲宽度调制操作的机动车辆直流风扇马达中的紧急操作模式下保护电动机和/或其触发电路免于过载的方法和电路,其中触发电路被设计为 紧急操作控制器,微控制器位于电机末级之前,并具有用于检测过电压的比较器组件。 在电池电压升高的同时确保过载保护,同时当紧急操作控制器响应电动机正常触发时的故障而被激活时。 为此,定义了至少一个过电压阈值(U S 1,U 2 S 2); 当超过时,提供给电机的电源减少或关闭。
摘要:
The present invention discloses a microreactor for performing heterogeneous catalytic reactions, being of plate or stack construction for industrial use, with provision made for chambers between the plates for the chemical reaction and for the heat removal. Inside the reaction chambers, catalyst material is applied to the internal walls or filled into recesses, and in all chambers there are spacers. In particular the slot-shaped reaction chambers have channels with a hydraulic diameter smaller than 1500 μm and a ratio of free slot width to free slot height in the range of 10 to 450.
摘要:
The invention relates to a windshield wiper device, in particular for a motor vehicle, with a molded tube (10) that is connected to the bodywork (13) and/or a mounting plate that is connected to the bodywork (13), which is particularly a mounting plate for a wiper motor. The windshield wiper device is located in a region, which is often an impact zone in a collision between a vehicle and a pedestrian. As a result, the components of the windshield wiper device often represent a high risk of injury to pedestrians. The objective of the invention is to improve the windshield wiper device so that the risk of injury to pedestrians is reduced during a collision with the vehicle. In the case of the windshield wiper device in accordance with the invention, the molded tube (10) and/or the mounting plate are detachably fastened to the bodywork (13) in accordance with the invention in such a way that the molded tube (10) and/or the mounting plate can be detached from the bodywork (13) during a collision with the windshield wiper device.
摘要:
A fuel-injection valve, in particular, a high-pressure injection valve, for injecting fuel directly into a combustion chamber of a mixture-compressing internal combustion engine with externally supplied ignition is distinguished by the fact that a guide and seating area formed by three disc-shaped elements is provided at a downstream end of the valve. A swirl element is embedded between a guide element and a valve seat element. The guide element is used to guide a valve needle which passes through it and can move in the axial direction, while a valve closing segment of the valve interacts with a valve seat surface of the valve seat element. The swirl element has an inner opening area with multiple swirl channels. The three disc-shaped elements are permanently connected to each other, forming a positive-locking joint.