Abstract: The present disclosure relates to internal combustion engines. The teachings thereof may be embodied in methods and devices for controlling the combustion processes taking place in the cylinders of an internal combustion engine. A method for controlling a combustion process in an internal combustion engine may include: measuring an actual camshaft position; measuring the actual rail pressure; calculating a phase correction value based on the measured actual rail pressure and a mass of fuel to be injected; calculating corrected actual camshaft positions based on the measured actual camshaft position and the respective phase correction value; calculating a mass of air depending on the determined corrected actual camshaft position; and calculating a fuel injection mass based on the mass of air determined for each cylinder.

Abstract: An automated process is provided for debundling carbon fiber tow that includes feeding a carbon fiber tow into a chopper. The carbon fiber tow is cut to form lengths of chopped tow portions. The lengths of chopped tow portions are distributed on a moving conveyor. The lengths of chopped tow portions are exposed to a first plasma discharge from a first plasma source on the moving conveyor to create debundled carbon fibers. Alternatively, the carbon fiber tow is exposed to the first plasma discharge prior to being cut into lengths. A system for applying chopped fibers to a sheet of molding compound includes a chopper for cutting a carbon fiber tow into lengths of chopped tow portions. A conveyor belt receives the lengths of chopped tow portions. At least one plasma generating source is arrayed across of the conveyor.

Abstract: A beam steering capability is proposed for a ladar sensor operating with limited laser transmit power, as may be typical of an airborne or automotive application. The ladar system also makes use of optical gain elements in the receiver which act to increase the signal to noise ratio at the receiver when the laser transmit power available is restricted by power, size, and/or cost limitations. In one embodiment, the calibration of each pixel in the ladar sensor is provided for by an electrical amplifier array with a number of pixel amplifiers. Each pixel amplifier may be individually calibrated to a mating detector element so as to eliminate the variations in dark current and gain between all pixels in the detector array. A number of new detector array designs are described which may lower cost and improve performance, and new low cost and high performance packaging for the detector array, amplifier array, and readout integrated circuit is introduced.

Abstract: The disclosed method checks the state of degradation of the suspension of a vehicle without having to carry out tests that immobilize the vehicle or to use non-objective expertise. The method processes data provided by at least one front camera in an on-board visual system. The checking method includes steps for periodically acquiring images provided by the camera or cameras, followed by storage of the positional data of the three-dimensional road in relation to a flat road and basic positional parameter data for the path of the vehicle. The error between the ideal values of the suspension parameters of a chosen suspension model and the values of these parameters corresponding to the stored path data from the positional data is then minimized. By iteration, the accuracy ? of the error reaches a predetermined value sufficient to diagnose a state of the suspension.

Abstract: A system for processing sensor data in a vehicle has a processor and a chassis sensor in communication with the processor. The processor is configured to record driving dynamics data and chassis sensor data for the vehicle, and filter driving dynamics data or the chassis sensor data on the basis of the chassis sensor data or the driving dynamics data.

Abstract: The invention relates to a high-pressure fuel pump (10) having a housing (12) in which a pressure-limiting valve (38) is arranged in a bore (36), wherein the bore (36) leads into an inflow volume (30) of a low-pressure inflow (22).

Abstract: The invention relates to a high-pressure fuel pump having a pump piston and having a piston rotation inducing device which induces a rotation of the pump piston about a movement axis, along which the pump piston moves in translational fashion, during the operation of the pump piston

Abstract: A method for controlling a voltage step-down converter (20) including an inductive component (21), one terminal of which is connected to an electrical source (50) via a regulating switch (24), while its other terminal is connected to a capacitive component (22), the output of the voltage step-down converter being regulated by alternating connection intervals, during which the regulating switch is in an on state, with disconnection intervals, during which the regulating switch is in an off state, the regulating switch being switched from the on state to the off state when the value of the output voltage reaches a disconnection threshold. The disconnection threshold has a variable value which decreases progressively, during each connection interval, from a maximum value of the disconnection threshold.

Abstract: A method (45) for determining the total pressure in a cylinder (Pcyl) of an engine as a function of the angular position (crk) of a crankshaft (14) and from a quantity of fuel to be injected in possibly several injections, includes: determining the pressure in the cylinder when there is no combustion, the pressure being called the pressure without combustion (Pcyl_m), determining, for each injection (inji), a curve of sub-variation of pressure (?Pcomb_i) caused by the combustion of the fuel quantity injected during the such injection (inji), the shape of the curve being estimated as a function of the quantity of fuel to be injected (MFi) and of the angular position for start of injection (SOIi) of the corresponding injection, determining the total pressure in the cylinder (Pcyl) by adding together the pressure without combustion (Pcyl_m) and the pressures given by the pressure sub-variation curves (?Pcomb_i) of each injection (inji).

Abstract: An injector includes an actuator arranged in an actuator space, a piston guide having a bore hole, and a piston arranged in the bore hole. The piston has a first end face facing the actuator and delimiting a first space in and/or on the bore hole, and a second end face lying opposite the first space and delimiting an adjoining second space in and/or on the bore hole. The piston is arranged between the first and second spaces, and a gap extends around the circumference of the piston between the piston and the bore hole. The piston includes a first material and the piston guide includes a second material, the first and second materials having different thermal expansion properties such that when the piston guide and/or piston are heated, the gap width of the gap decreases to limit fuel leakage between the first space and second spaces.

Abstract: Disclosed is a method for estimating the flow rate QEGR of exhaust gases recirculated through an exhaust gas recirculation valve connecting an exhaust circuit and an intake circuit of a combustion engine, the method including the steps: —of determining a difference in pressure ?P between the upstream and downstream sides of the valve, determining a density ?EGR of the recirculated exhaust gases passing through the valve, determining a corrected effective area Seff_cor of the valve, estimating the flow rate QEGR of the recirculated exhaust gases from these three parameters.

Abstract: A nozzle assembly for a fluid injector includes a nozzle body with a central axis, the nozzle body having a nozzle body recess, at least one injection opening and an outer wall facing away from the nozzle body recess. The nozzle assembly further includes a nozzle tension nut for coupling the nozzle body to an injector body, the nozzle tension nut having an inner wall facing the outer wall of the nozzle body. The nozzle body and the nozzle tension nut are formed such that, under the effect of an operational pressure exerted in ordinary operation by a metered fluid onto the nozzle body recess, the outer wall of the nozzle body rests, at least in part, against the inner wall of the nozzle tension nut in the radial direction.

Abstract: An actuating drive for an injection valve may comprise: a sleeve-shaped actuator housing; an actuator unit disposed in the housing; at least one actuator feed line; at least one connector contact; a housing unit; a cover; and a first sealing unit. The at least one actuator feed line may protrude from an end-side opening of the actuator housing. The at least one connector contact may be coupled electrically to the at least one actuator feed line and configured to be coupled electrically to a system-side connector. The housing unit may be arranged along a circumference of the actuator housing in an end-side shell surface section of the actuator housing and configured to fix the at least one connector contact in a predefined position. The cover may close a cavity defined by the housing unit and be coupled mechanically to the housing unit. The first sealing element may be arranged between the housing unit and the cover to prevent penetration of solid, liquid, or gaseous media into the cavity.

Abstract: A method for locating, via ultra high frequency, a mobile device (T) for “hands-free” access to a vehicle (V), via a locating device (D?) on board the vehicle (V), the locating device (D?) including an ultra high frequency transceiver (10?), an electrical power supply source (Vcc) and an antenna (A?), the locating method being noteworthy in that the transceiver (10?) is disconnected from the antenna (A?), and that the transceiver (10?) is connected to an attenuation module (M1, M2, M3) located at a predetermined distance (L1, L2, L3) from the transceiver (10?) and including an impedance (Z1, Z2, Z3) of predetermined value connected to ground, the predetermined distance (L1, L2, L3) between the transceiver (10?) and the attenuation module (M1, M2, M3) and the predetermined value of the impedance (Z1, Z2, Z3) defining an area (A1, A2, A3) for locating the mobile device (T) around the vehicle (V).

Abstract: A method for determining atmospheric pressure AMP during operation in a partial load state of a turbocharged engine (1) including an air intake line (2) incorporating a butterfly valve (16), and an exhaust line (3) including a bypass duct (20) incorporating an exhaust gas discharge valve (21), the method includes measuring the air pressure PUT upstream of the butterfly valve (16), and for a given speed of N rpm of the engine (1), when the boost pressure PUT corresponds substantially to the natural boost pressure, determining the atmospheric pressure AMP=AMP(0)+PUT?PUT(0), wherein AMP(0) is the atmospheric pressure previously measured, and PUT(0) is boost pressure naturally obtained for the speed N rpm of the engine (1) for the atmospheric pressure AMP(0).

Abstract: A fluid level sensor may include a first sound transducer, a second sound transducer, a reference element, a first deflection element, and a control unit. The reference element may be disposed at a predetermined distance from the second sound transducer and arranged in a fluid space of the fluid container. The first deflection element may be arranged in the fluid space to deflect the second sound signals by a first predetermined angle toward the fluid surface. The control unit may establish a speed of sound within a fluid in the fluid space based at least in part on the second sound signals and establish the level of the fluid surface over a base portion of the fluid container based at least in part on the first sound signals, the second sound signals, and the speed of sound within the fluid.

Abstract: The present disclosure teaches methods for digitally transmitting data. An example method may include: receiving a modulated signal containing at least one useful signal or noise or interference signals; repeatedly estimating at least one parameter of the received signal relevant to the demodulation of the useful signal; monitoring changes in the repeatedly estimated parameters; and detecting a useful signal based at least in part on whether one or more changes in the repeatedly estimated parameters satisfy at least one particular, predefined condition.

Abstract: A channel selector for a frequency modulation radio frequency receiver, including a band-pass filter, of which the frequency band is centered on the central frequency of the channel to be selected, and has a width that is automatically variable between a minimum value and a maximum value, the minimum value being determined dynamically proportional to a weighted sum of the field level and the modulation level of the channel, according to a formula MinBW=k1×C+k2×M, in which MinBW is the minimum value, C the field level, k1 the weight associated with the field level, M the modulation level, and k2 the weight associated with the modulation level. The weight associated with the field level is less than the weight associated with the modulation level, preferably in a ratio of 1:3.

Abstract: The disclosure relates to a fuel injection system having a valve arrangement for connecting a pressure chamber of a high-pressure fuel pump to a high-pressure accumulator. The valve arrangement has an outlet valve and a pressure-limiting valve. An outlet valve seat and a pressure-limiting valve seat are formed on a common valve seat element which is formed in one piece, and are arranged eccentrically with respect to one another.

Abstract: The present disclosure relates to an injection valve. The valve may comprise a fluid inlet tube with a recess, a valve body, a valve needle, a spring element, and an elastic body. The valve body may have a central longitudinal axis and a cavity with a fluid outlet portion. The valve needle may be arranged in the recess of the fluid inlet tube and movable in the cavity. The spring element and elastic body may be arranged in the recess and interact with a portion of the valve body on one side and with a spring rest fixed to the valve needle on another side. The elastic body and the spring element are compressed as the valve needle is moved along the longitudinal axis away from its closing position. The elastic body, in the presence of a fluid pressure in the recess, exerts a fluid-pressure-dependent longitudinal force on the valve needle.