Abstract: The invention relates to a monitoring system for an aircraft platform implementing a set of avionics functions using a plurality of heterogeneous hardware and software components, including: an acquisition module for operating parameters of the components, configured to implement a plurality of communication protocols adapted to query each the component; a storage module including a database, configured to collect and store operating parameters acquired by the acquisition module in the database, and; an interface module with a plurality of clients, including a query unit configured to query the database of the storage module and supply one or several of the parameters stored in the database in response to a request made by a client; the acquisition, storage and interface modules being arranged in a three-tier architecture.

Abstract: An automatic calibration method for a motor vehicle camshaft sensor, the vehicle having at least one camshaft, a toothed encoded target (or magnetic encoder) associated with this camshaft, and a magnetic field sensor placed near the target to detect magnetic field variations caused by the passage of the teeth of the target near the sensor, the sensor delivering signals corrected by a predetermined detection threshold K, the method including: continuously measuring the value of the magnetic field during at least one revolution of the target, determining the maximum amplitude Amax of the field measured during this revolution, determining the minimum amplitude Amin of the field measured during this revolution, finding the ratio of the amplitudes A min A max and determining an auto-adaptive correction coefficient K? to be applied to the signal received from the magnetic sensor, with allowance for the geometrical imperfections of the target, according to the following formula: K ? = A min A

Abstract: The invention relates to a monitoring system for an aircraft platform implementing a set of avionics functions using a plurality of heterogeneous hardware and software components, including: an acquisition module for operating parameters of the components, configured to implement a plurality of communication protocols adapted to query each the component; a storage module including a database, configured to collect and store operating parameters acquired by the acquisition module in the database, and; an interface module with a plurality of clients, including a query unit configured to query the database of the storage module and supply one or several of the parameters stored in the database in response to a request made by a client; the acquisition, storage and interface modules being arranged in a three-tier architecture.

Abstract: An automatic calibration method for a motor vehicle camshaft sensor, the vehicle having at least one camshaft, a toothed encoded target (or magnetic encoder) associated with this camshaft, and a magnetic field sensor placed near the target to detect magnetic field variations caused by the passage of the teeth of the target near the sensor, the sensor delivering signals corrected by a predetermined detection threshold K, the method including: continuously measuring the value of the magnetic field during at least one revolution of the target, determining the maximum amplitude Amax of the field measured during this revolution, determining the minimum amplitude Amin of the field measured during this revolution, finding the ratio of the amplitudes A min A max and determining an auto-adaptive correction coefficient K? to be applied to the signal received from the magnetic sensor, with allowance for the geometrical imperfections of the target, according to the following formula: K ? = A min A

Abstract: A method for determining the phasing of the angular position of a four-stroke internal combustion engine with indirect injection and time-controlled sequential reinjection/sequential injection cutoff, characterized in that it includes, with the engine running, the following steps: observing the curve (3, 4) of engine speed (1) as a function of time (2) during a phase of sequential reinjection and/or sequential injection cutoff, performed in accordance with the expected oscillations of the transmission, discriminating, according to the shape of the curve (3, 4), a substantially linear shape (3) being indicative of correct phasing, whereas a substantially sinusoidal shape (4) is indicative of incorrect phasing.

Abstract: In a method relating to an engine with n cylinders, fuel is injected in a predetermined order into the cylinders in a manner which is synchronized with the position of the pistons of the engine. The method includes the following steps after start-up: injection into m cylinders in a predetermined order of injection; measurement of engine speed and/or acceleration; continuation of injection in a predetermined order of injection if engine speed and/or acceleration exceed(s) a predetermined threshold; continuation of injection with a delay in the event of the contrary. The method can be used with respect to the start-up of a direct injection engine.

Abstract: A method for determining the phasing of the angular position of a four-stroke internal combustion engine with indirect injection and time-controlled sequential reinjection/sequential injection cutoff, characterized in that it includes, with the engine running, the following steps: observing the curve (3, 4) of engine speed (1) as a function of time (2) during a phase of sequential reinjection and/or sequential injection cutoff, performed in accordance with the expected oscillations of the transmission, discriminating, according to the shape of the curve (3, 4), a substantially linear shape (3) being indicative of correct phasing, whereas a substantially sinusoidal shape (4) is indicative of incorrect phasing.

Abstract: A method of determining the “phasing” of an internal combustion engine includes two banks of cylinders each supplied by its own intake manifold. This determining method consists, on the one hand, in equipping each intake manifold with an air flow meter and in measuring the air flow rate in each of the manifolds so as to detect an increase in the air flow rate in one of the manifolds representative of an intake of air into the bank of cylinders supplied by the manifold, and, on the other hand, in equipping one of the rotary members, crankshaft or camshaft associated with each bank of cylinders with a target that rotates as one with the rotary member and is able to determine which cylinder of the bank of cylinders determined to be in the intake phase is in the air intake phase.

Abstract: A method for determining the exhaust pressure (Pr) of a turbocharged internal combustion engine, including a solenoid by-pass valve for the exhaust gas, characterized in that an exhaust pressure (Pi) is determined as a function of the inlet air flow to the engine, (Ar), the engine speed (Rr) and the degree of opening of the solenoid exhaust by-pass valve (Tr), by interpolation from a reference map having exhaust gas pressure values (Pc) for given inlet air flow values (Ac), the engine speed (Rc) and the degree of opening of the solenoid exhaust by-pass valve (Tc), and the exhaust pressure determined by the interpolation (Pi) is corrected as a function of ambient pressure values (Pa, Po).

Abstract: A method of controlling the startup of an engine using a sensor having a reference index, commanding the rotation of the crankshaft, detecting the rotation of the crankshaft, selecting a group of cylinders for which the reference index is detected less than a half-turn of the crankshaft before the piston reaches the top dead center, before the inlet valves of the selected group of cylinders closes, commanding the injectors of the selected group of cylinders, detecting the reference index, and commanding the ignition element.

Abstract: This method is intended for a turbocharged internal combustion engine having an electrically controlled throttle valve. The turbocharger has a waste gate for regulating its pressure. The position of the valve and the extent to which the gate is open are controlled according to two distinct modes of operation. In the first mode, the position of the valve is predetermined as a function of engine control and operating parameters, and the position of the gate is used to regulate the air flow rate. In the second mode, the extent to which the gate is open is predetermined as a function of engine control and operating parameters, and the position of the valve is used to regulate the air flow rate. Which mode is used is gauged by an electronic device which chooses the mode of operation to be implemented as a function of predetermined conditions stored in memory.

Abstract: A method of controlling the start-up of an engine in which: an engine is used including: a plurality of cylinders in each of which a piston slides, a crankshaft linked with the pistons, inlet valves and exhaust valves, injectors, ignition element, there is used a sensor having a reference index, the rotation of the crankshaft is commanded, the rotation of the crankshaft is detected, a group of cylinders is selected for which the reference index is detected less than a half-turn of the crankshaft before the piston reaches the top dead center, before the inlet valves of the selected group of cylinders closes, the injectors of the selected group of cylinders are commanded, the reference index is detected, the ignition element is commanded.

Abstract: A method for determining the exhaust pressure (Pr) of a turbocharged internal combustion engine, including a solenoid bypass valve for the exhaust gas, characterised in that an exhaust pressure (Pi) is determined as a function of the inlet air flow to the engine, (Ar), the engine speed (Rr) and the degree of opening of the solenoid exhaust by-pass valve (Tr), by interpolation from a reference map having exhaust gas pressure values (Pc) for given inlet air flow values (Ac), the engine speed (Rc) and the degree of opening of the solenoid exhaust bypass valve (Tc), and the exhaust pressure determined by the interpolation (Pi) is corrected as a function of ambient pressure values (Pa, Po)

Abstract: In a method relating to an engine with n cylinders, fuel is injected in a predetermined order into the cylinders in a manner which is synchronized with the position of the pistons of the engine. The method includes the following steps after start-up: injection into m cylinders in a predetermined order of injection; measurement of engine speed and/or acceleration; continuation of injection in a predetermined order of injection if engine speed and/or acceleration exceed(s) a predetermined threshold; continuation of injection with a delay in the event of the contrary. The method can be used with respect to the start-up of a direct injection engine.

Abstract: This method is intended for a turbocharged internal combustion engine having an electrically controlled throttle valve. The turbocharger has a waste gate for regulating its pressure. The position of the valve and the extent to which the gate is open are controlled according to two distinct modes of operation. In the first mode, the position of the valve is predetermined as a function of engine control and operating parameters, and the position of the gate is used to regulate the air flow rate. In the second mode, the extent to which the gate is open is predetermined as a function of engine control and operating parameters, and the position of the valve is used to regulate the air flow rate. Which mode is used is gauged by an electronic device which chooses the mode of operation to be implemented as a function of predetermined conditions stored in memory.

Abstract: A method for controlling a valve lift device associated with an internal combustion engine includes determining, according to maps, a relative timing angle to be applied to a camshaft and crankshaft. The determined timing angle is processed with a PID-type control. Each time an engine enters a stabilized low idle speed, a reference value of the timing angle is determined when a valve lift device is inactivated. The reference value is taken into consideration when any later timing angle command is given. At least one further step is included. For example, a map of a duty cycle for an opening of a hydraulic valve controlled by the PID of the valve lift device is pre-established on a test bed as a function of an engine water temperature, and/or the timing angle to be applied as a function of the engine water temperature is adjusted by modifying the reference value.