Abstract: Described is an igniter comprising an arrangement composed of an ignition electrode, an outer conductor coaxially enclosing the ignition electrode, and an electric insulator disposed between the ignition electrode and the outer conductor, via which insulator the ignition electrode and the outer conductor are interconnected, for igniting a fuel/air mixture in a combustion chamber, in particular in an internal combustion engine comprising one or more combustion chambers which are delimited by walls that are at ground potential, by creating a corona discharge in an area surrounding the tip of the ignition electrode. According to the invention, the ratio of the outer diameter d of the ignition electrode and the inner diameter D of the outer conductor is in the range of 0.3 to 0.44.

Abstract: The invention relates to a glow plug comprising a housing in which an inner conductor is disposed, a metal sleeve which is inserted into the housing, and a ceramic glow pin which is disposed in the metal sleeve, wherein the two ends of the glow pin protrude from the metal sleeve and the rear end of the pin is connected to the inner conductor, and wherein the metal sleeve has a tapering section at the rear end, the section enclosing a tapering section of the glow pin. According to the invention, the glow pin is pressed into the metal sleeve. The invention further relates to a method for connecting a pin made of functional ceramic to a metal sleeve.

Abstract: The invention relates to a pencil-type glow plug, in particular for a self-igniting internal combustion engine. The plug includes at least one plug base with at least one essentially bar-shaped heating element, which projects on one end from the plug base, and at least one measurement element, the heating element and the measurement element being integrally bonded and/or force-locked and/or form-locked.

Abstract: The invention describes a method for generating corona discharges in two combustion chambers of a combustion engine, into each of which a high-frequency igniter (HFZ3, HFZ4) protrudes which is part of a high-frequency resonant circuit, by providing only one single transformer (TR4), which has a primary side and a secondary side, at least one primary winding on the primary side and a secondary winding on the secondary side, connecting the secondary winding of the transformer (TR3, TR4) to both resonant circuits and feeding into both resonant circuits the high frequency alternate current flowing through the secondary winding.

Abstract: A device for directing combustion anomalies of an internal combustion engine, comprising at least one power supply, at least one ion current amplifier, at least one signal filter, at least one ion current signal output, at least one ignition coil actuating electronic system, at least one ignition coil, at least one ion current adapter, and at least one ion current sensor.

Abstract: The invention relates to a device and a method for determining combustion chamber pressure, having at least one glow filament, at least one measuring element, at least two spring membranes, and at least one tubular base.

Abstract: The invention relates to a glow plug for Diesel engines, comprising a housing, a heater rod, which is movable in the housing in axial direction and projects from the housing at a forward end, and a pressure measuring device for measuring a combustion chamber pressure exerted on the heater rod. It is provided according to the invention that a housing chamber is filled with a substance having or achieving liquid to paste-like consistency at temperatures occurring during operation and conducting heat generated by the heater rod to the housing.

Abstract: The invention relates to a method for operating a glow plug with running engine, with the engine having a crankshaft and at least one cylinder. An effective voltage is generated from a vehicle electrical system voltage, with the effective voltage being applied to the glow plug. A plurality of measurement values of the combustion chamber pressure prevalent in the cylinder is measured during each working cycle of the cylinder, with the angular position of the crankshaft being determined for each individual measurement value. A characteristic value of the combustion process is determined from the evolution of the combustion chamber pressure measured in relation to the angular position of the crankshaft, and the determined characteristic value is compared with a setpoint value, and the effective voltage is set to a minimum value required for reaching the setpoint value.

Abstract: A device for measuring tire pressure in a pneumatic tire of a motor vehicle using a sensor on the rim well of a rim which accommodates a tire valve for the pneumatic tire and a receiver outside of the pneumatic tire being assigned to the sensor, wherein an electronics housing or signal housing assigned to the rim well is connected to the tire valve, said housing containing transmission electronics as the tire pressure sensor, and is connected to the tire valve by a fastening element substantially in the region of the valve base part.

Abstract: The invention relates to a motor vehicle heating system comprising a heater (1) that has a heater core (2), through which a fluid flow to be heated can flow and which comprises a plurality of heating elements, and a top part (6) which is placed on the heater core (2) and forms a receptacle for a plug-in connector (10), and comprising a plug-in connector (10) that fits the top part and is used to connect the heater (1) to the electrical system of a motor vehicle, wherein the plug-in connector (10) includes a plurality of contacts, which are situated in a row, for contacting contacts (7) of the heater (1). According to the invention, the plug-in connector (10) includes a plurality of housings (12), each of which encloses one or two contacts of the plug-in connector (10), wherein the housings (12) are interconnected by mechanical adapter elements (13) which enable adjacent housings (12) to be moved toward one another or away from one another to adapt to the position of the contacts (7) of the heater (1).

Abstract: A method for producing a spark plug which contains an inner conductor, an insulator surrounding the inner conductor, a spark plug body surrounding the insulator, and two electrodes forming an ignition gap. The first electrode is a center electrode connected to the inner conductor in an electrically conducting manner and the second electrode is a ground electrode connected to the spark plug body in an electrically conducting manner. An iridium component which contains more than 95 percent by weight of iridium is welded onto one of the electrodes. An iridium component that is punched out of an iridium sheet and has a thickness that is less in size than its diameter is also employed.

Abstract: The invention relates to a method for operating a heating element in a motor vehicle by pulse width modulation, wherein fluctuations in the supply voltage are compensated for by adapting the duty cycle so as to achieve a desired heating output. According to the invention, during a voltage pulse the voltage that is present at the heating element and/or the current flowing through the heating element are measured at specified intervals, and the measured values or values determined therefrom are added to calculate a sum value, which rises with the energy that is fed into the heating element by the voltage pulse, and the voltage pulse is ended at the latest when the sum value has reached a target value. The invention furthermore relates to a glow plug controller for carrying out the method according to the invention.

Abstract: A tire pressure control system includes a tire valve and wheel electronics including a pressure measuring device and a transmission device in a housing, wherein the housing has two base elements on a bottom for attaching the same to a rim well of a wheel, and a contact surface seated on a valve spud of the tire valve in the mounted state. The surface has an elongated hole through which the tire valve projects in the mounted state. The invention provides that the contact surface can be linearly displaced in the direction of the elongated hole on the valve spud during installation.

Abstract: Method for allocating identification codes which are contained in signals transmitted by components of a tire pressure monitoring system, said components being attached to wheels of the vehicle, to the wheel positions. A plurality of sensors to the tire pressure, to the rolling direction of the wheel, to the shocks, as well as a memory for the identification code, and a transmitter which supplies signals with the identification code, the rolling direction and the occurrence of a shock on a wheel to a receiver which, based on the supplied rolling direction information, distinguishes identification codes pertaining to wheels on the left-hand or right-hand side of the vehicle from shocks which occur on the left-hand or right-hand side of the vehicle, measures the time interval elapsing between shock signals on one side of the vehicle, multiplies this time interval by the velocity of the vehicle measured within the same time interval.

Abstract: The invention relates to an ignition device for igniting fuel in an internal combustion engine by means of a corona discharge, comprising an ignition electrode, an outer conductor which surrounds the ignition electrode and has a forward end and a rear end, and an electrical insulator which is arranged between the ignition electrode and the outer conductor, wherein the insulator and the ignition electrode project beyond the forward end of the outer conductor in longitudinal direction and the ignition electrode comprises a plurality of electrode branches which each start from a base point, wherein the insulator extends beyond the base points in longitudinal direction. According to the invention an end surface of the electrode branches is uncovered.

Abstract: An igniter for igniting a fuel/air mixture using a corona discharge, generated by a high-frequency electric high voltage, in an internal combustion engine having one or more combustion chambers delimited by walls at ground potential, comprising an ignition electrode, which traverses in an electrically insulated manner one of the walls delimiting the particular combustion chamber and constitutes in cooperation with the walls of the combustion chamber, that are at ground potential, an electrical capacitance. Comprising a metallic or metallized outer member and an elongate passage extending through the outer member, through which extends the ignition electrode, and comprising an insulator which encloses the ignition electrode and insulates it electrically from the outer member, wherein the ignition electrode, the insulator, and the passage have a common longitudinal direction.

Abstract: Allocates identifiers of units of a tire pressure monitoring system to the positions of ABS-sensors which are each assigned to the wheels of the vehicle. The identifiers are contained in signals that are emitted by the units. Each unit, which is called a wheel electronic, has a pressure sensor, which is sensitive to the tire pressure of the wheel, a motion sensor, which provides information on the rotation speed of the wheel, a memory with the individual identifier of the wheel stored therein, and a transmitter, which transmits signals only containing information on the rotation speed of the respective wheel, to a receiver. An evaluation device receives the transmitted identifier and compares the information on the rotation speed of the wheel transmitted along with the identifier, with rotation speed information, which were acquired by the ABS sensors for the same time span and transferred to the evaluation device.

Abstract: An igniter for igniting a fuel-air-mixture in a combustion chamber, in particular in a combustion engine with one or several combustion chambers, by generating a high frequency corona discharge, said ignitiger comprising an assembly comprising an ignition electrode, an outer conductor surrounding the ignition electrode, which has a front end and a rear end, and an electrical insulator arranged between the ignition electrode and the outer conductor, wherein the ignition electrode is part of an electrical high-frequency resonant circuit, protrudes over the front end of the outer conductor, and is connected to an alternate current source or alternate voltage source which feeds the HF-resonant circuit, and delivers a high frequency alternate current or a high frequency alternate voltage, respectively. The ignition electrode is branched into more than four electrode branches extending away from the outer conductor, in different directions.

Abstract: The invention relates to a method for monitoring air pressure in vehicle tires using wheel electronics, which comprise a pressure sensor for measuring the air pressure present in the tire, a transmitter for transmitting pressure information, and a receiver for receiving interrogation signals, wherein a transmission activity of the wheel electronics is triggered by the reception of an interrogation signal, which is transmitted as a pulse train comprising a command section that encodes a transmission instruction for the wheel electronics. According to the invention, the pulse train comprises an adjustment section having several pulses before the command section.

Abstract: The invention relates to a method for igniting a fuel/air mixture in one or more combustion chambers which are delimited by walls that are at ground potential, wherein an electric resonant circuit is excited in which an ignition electrode, which is guided through one of the walls delimiting the combustion chamber in an electrically insulated manner and which extends into the combustion chamber, in cooperation with the walls of the combustion chamber that are at ground potential constitutes a capacitance, and in which the excitation of the resonant circuit is controlled such that a corona discharge igniting the fuel/air mixture is created in the combustion chamber at the ignition electrode.