摘要:
A pick-up for the intake pressure of a combustion engine of the type with a flexible membrane and electrical translation of the displacement of the membrane, including a spring acting against the member, an adjustment mechanism for positioning the spring acting against the membrane, a guiding tube for the spring serving as a stop for the membrane, a closed magnetic casing made of ferrite including nested cylinders pierced by a hole at each end of their axes, a central ferrite magnetic core connected to the membrane and penetrating the closed magnetic casing, an insulating bobbin disposed within the casing, a single winding placed on the insulating bobbin around the core and covering a major portion of the core in its deepest position, the bobbin further including cylindrical ends extending beyond the magnetic casing on opposite sides thereof so as to form an air pocket between the core and the casing and guide the core in the casing, and an oscillating electronic circuit connected to the winding which includes a variable pressure/frequency translator.
摘要:
A device for measuring the amount of oxygen in combustion gas including succesively, a channel bordered by two plates between which exists a magnetic field, a central electrode divided in two, longitudinally, a gas discharge path, and finally a mechanism for measuring the current or ionization potential in each of the paths. This device is, accordingly, applicable to the automobile industry and automation and regulation of the operation of boilers of all kinds.
摘要:
The contactless angular displacement and/or torque pickup is characterized in that it comprises two electrically insulating coaxial disks (7a, 7b) that can turn in relation to one another by an angle to be detected and that carry on their opposing faces conductive plane coils (8) in the shape of spirally wound sectors coiled alternately in both directions and whose mutual induction varies as a function of the relative angular position of the detection disks (7a, 7b). Also included is a rotary transformer (6a, 6b) to supply one of the detection disks (7a, 7b), a circuit (18) for supplying the primary (11a) of the rotary transformer and a circuit (17, 18) for processing the signal (S) collected on one of the detection disks (7a, 7b).
摘要:
A piezoelectric sensitive element has elements for collecting charges appearing between the sides of the piezoelectric element. These elements include a flexible insulating strip having one the same face two distinct conductive layers each of which has an annular layer for contact with the piezoelectric sensitive element and connected by a connecting layer to a terminal layer. Application is to the detection of pinging in internal combustion engines.
摘要:
A process for producing pressure sensors and other similar devices in which a fluid-tight bond between a sealing glass and another material is obtained under the effect of the application of heat and an electric field.The process is characterized in that the parts to be assembled float on the surface of a molten metal bath. The bath is positioned in a chamber within which a partial vacuum prevails.
摘要:
A tachometer circuit in accordance with the invention has two or more output states dependent upon the frequency of an applied signal. The tachometer circuit is of the type comprising at least one time-measurement circuit having two discharge paths for a capacitor which forms part of a time-constant network. One of the discharge paths is controlled by the applied signal and the other path is caused to conduct after a predetermined time. In the circuit of the present invention the discharge path to which the input signal is applied includes a thyristor or like element with a high holding current which ensures a non-controllable discharge of the capacitor, and the other discharge path comprises a unijunction transistor or like element with a low holding current.
摘要:
The capacitor probe is made up of two parts, both of which are in fluid communication with the interior of the tank or pipe the liquid level of which is to be measured. One part (7) of the probe is located at the bottom of the probe and acts as a reference capacitor. The other part (4) of the probe extends upwardly to the maximum liquid level to be measured. The part (4) includes two identical measuring capacitors, one of which is connected to the reference capacitor.
摘要:
An energy exchanger for a battery driven vehicle comprising two rotatable electrical machines connected on the same shaft, one of high voltage, the other of low voltage. The electrical machines can each be operated in generator or motor modes and the machines are electrically connected together to the battery on a vehicle via an electrical control circuit such that the machines exchange energy between themselves and the battery, both to drive the vehicle by battery drain and to recharge the battery when the vehicle is decelerating. The battery can be recharged from an external power supply via the machines which then operate in generator mode.
摘要:
Device for electrical actuation of the accelerator of an internal combustion engine, particularly of a motor vehicle, comprising a reduction gear interposed between an electric motor and an element for actuating the accelerator. The reduction gear comprises a planetary gear train whose sun gear 12 is solid in rotation with the shaft of the electric motor. An internal ring gear 11 is connected to the actuation element 4 and the planet carrier 14 is pulled elastically by a return spring 15 to actuate an electric contact switch 17.
摘要:
Disclosed is an absolute pressure pick-up for the intake in an internal combustion engine. The pick-up consists of a screened magnetic circuit equipped with a mobile core placed inside an elastic bellows. A chamber (4) that receives either the pressure to measure or the reference vacuum is around the bellows.