摘要:
A valve of a piston pump, in particular for a hydraulic vehicle brake system, includes a closing body configured to be moved in an axially guided manner against a sealing seat. The closing body is formed in two pieces, which include a damping piston and a closing element inserted in the damping piston.
摘要:
A sensor system for determining at least one parameter of a fluid medium which flows in a main flow direction, e.g., an intake air mass flowing through a flow pipe, includes at least one sensor situated in the fluid medium and at least one grating which is situated transversely to the main flow direction and which has at least one bar. On at least one surface over which the fluid medium flows, the bar has at least one shearing element which is designed to generate a region in the flow having a turbulent flow downstream from the shearing element.
摘要:
In order to ignite fuel/air mixtures in at least one combustion chamber of a spark ignition engine, the following steps arc carried out: an HF gas discharge as the main discharge (6) is ignited in order to produce a plasma channel (11) in the region of the border between an ignition element and the combustion chamber, and an HF gas discharge as an auxiliary discharge (5) is previously or, at the most, simultaneously ignited in order to generate a flow (12) oriented towards that of the plasma channel (11). The auxiliary discharge (5) is positioned, from the combustion chamber, behind the main discharge (6), such that the oriented flow (12) presses the plasma channel (11) of the main discharge into the combustion chamber.
摘要:
A device for determining at least one parameter of a medium flowing in a line, in particular for determining the air mass flow rate in the intake manifold of an internal combustion engine, which include a line component 3 and a sensor device 1 having a bypass part 6, are known. To prevent separation of the flow at the sidewalls of the bypass part, it is provided that a flow diversion element 2 be positioned in the line component 3 upstream from the bypass part 6 with respect to the main flow direction 18 and have at least one diversion surface 20 facing the main flow direction 18, which, starting from an apex line 25 located at a distance from the bypass part 6, curves evenly on both sides toward the two sidewalls 16, 17 so that the ends 38 of the diversion surface 20 facing away from the apex line are aligned with the sidewalls 16, 17.
摘要:
A composite material is shown and described in the form of a laminated material made of flat superimposed layers for production of a structural component, in particular for structural components of a motor vehicle, comprising at least one metal layer and at least one fibre-reinforced plastic layer. In order to achieve firstly a reduction in weight and secondly an increase in strength of a structural component made from the composite material, with a reduction in component costs, it is provided that the fibre-reinforced plastic layer has a matrix based on polypropylene, polyethylene, polyamide and/or mixtures thereof.
摘要:
A sensor system for determining at least one parameter of a fluid medium which flows in a main flow direction, e.g., an intake air mass flowing through a flow pipe, includes at least one sensor situated in the fluid medium and at least one grating which is situated transversely to the main flow direction and which has at least one bar. On at least one surface over which the fluid medium flows, the bar has at least one shearing element which is designed to generate a region in the flow having a turbulent flow downstream from the shearing element.
摘要:
For monitoring a combustion process in an internal combustion engine wherein a fuel-air mixture is ignited with a high-frequency plasma it is provided to determine the impedance of the plasma. A high-frequency signal is applied to the resonator with a capacity that is so low that no arcing-over forms on the electrodes and the high-frequency current and the high-frequency voltage are measured. The impedance of the ignited mixture is determined from the high-frequency current and the high-frequency voltage.
摘要:
A piston pump as a return pump of a slip-controlled, hydraulic vehicle braking system is disclosed. There is a mushroom-shaped shut-off body as a spring-loaded outlet valve, the shaft thereof extending through a center hole of a tubular damper piston. The shut-off body is movable transversely to the opening and closing direction thereof, so that said shut-off body aligns with a valve seat upon closing. Upon opening, the damper piston forces brake fluid out of a damping chamber in which it is housed so that an opening movement of the outlet valve is dampened.
摘要:
A device for detecting at least one property of a flowing fluid medium is proposed, in particular for detecting an air mass flow of an intake air mass. The device includes at least one sensor housing which may be at least partially introduced into the flowing fluid medium. At least one sensor element for detecting the property is accommodated within the sensor housing. At least one temperature sensor, which has at least one electric contact, in particular at least one contact wire, is furthermore accommodated in the sensor housing. At least one contact pad is furthermore accommodated in the sensor housing, the electric contact being electrically conductively connected to the contact pad at least one connecting point. The connecting point is protected against the fluid medium by at least one electrically insulating potting compound.
摘要:
In a method for producing a multilayer encapsulation (1) of a piezo actuator (5) such that the piezo actuator (5) is protected towards the outside without having to use an additional enveloping housing-type structure, in order to produce the multilayer encapsulation (1), an electrically insulating elastic layer (10) is first applied to the surface of the piezo actuator (5), whereupon a metallic layer is applied to the electrically insulating elastic layer (10) so as to planarly cover the same.