31 results about "Capacitor discharge ignition" patented technology

A fuel injection device for an internal combustion engine including: an injector that injects fuel to be supplied to the internal combustion engine; a battery to which a DC converter that charges a capacitor of a capacitor discharge ignition circuit is connected as a load; a control portion that is provided to operate when a power supply voltage is provided from the battery through a power supply circuit, and generates an injection command signal when fuel injection timing is detected; and an injector drive circuit that applies a driving voltage from the battery to the injector while receiving the injection command signal, wherein the device further comprises converter operation stopping portion for stopping an operation of the DC converter during set load driving stop time when the injection command signal is generated.

A capacitor discharge ignition device is provided with a capacitor for storing charge to produce ignition energy; ignition coils that receive charge released from the capacitor on the primary side and generate a high voltage on the secondary side; a switching element for causing the capacitor to release the charge stored therein to the ignition coils; ignition timing control means that receives a signal corresponding to a crank angle of an internal combustion engine and supplies an ignition signal to the switching element; and circuit abnormality detecting means that receives a signal from the ignition timing control means, sets a capacitor voltage measurement time, and judges for a circuit abnormality on the basis of a voltage of the capacitor measured at the capacitor voltage measurement time.

A capacitor discharge ignition device for an engine including: an exciter coil provided in a magneto generator driven by the engine; a voltage increasing circuit that increases an induced voltage of the exciter coil; a capacitor charged by an output voltage of the voltage increasing circuit; and a discharge switch that is turned on at ignition timing of the engine and discharges charges in the capacitor through a primary coil of the ignition coil, wherein the ignition device further includes a voltage increasing control portion that controls the voltage increasing circuit so as to increase an output voltage of the voltage increasing circuit when a rotational speed of the engine is a set value or less, and limit the output voltage of the voltage increasing circuit when the rotational speed of the engine exceeds the set value.

A method of ion sensing in a CD ignition system for an internal combustion engine comprises: a) closing the controllable switch in synchronism with the internal combustion engine for a period of time to transfer energy to the ignition coil primary to cause a spark breakdown across the spark plug; and b) observing the current in the secondary winding circuit indicative of ionization in the vicinity of the spark plug electrodes.

A control methodology and apparatus for an engine suitable for use in capacitor discharge ignition systems for internal combustion engines or brushless DC motors is provided, which make use of a simple logic block to determine for instance an ignition timing advance angle or duty cycle signal based on actual engine speed versus engine control parameter data stored in a table, which is a read-only memory, preferably configurable. To minimize memory space, a small number of values of engine control parameter versus engine speed are stored in the table and the logic block determines the required engine control signal for a measured value of engine speed by an interpolation process, preferably linear interpolation.

A diagnosis device of a capacitor discharge ignition device for an engine that detects, as a singularity, a leading edge or a trailing edge of a voltage between output terminals of an ignition power supply portion that generates a voltage for charging an ignition capacitor, counts the number of singularities detected while a crankshaft rotates through a measurement section, which is a section of a certain crank angle determined with reference to a pulse signal obtained by a signal generator that generates a pulse signal at a specific crank angle position of an engine, and diagnoses an abnormality of the ignition device and a cause of the abnormality by comparing the count value of singularity with the number of times of normal ignition of the engine performed while the crankshaft rotates through the measurement section.

The ignition dwell angle cannot be accurately controlled yet in the prior art; and in order to guarantee ignition energy, the dwell angle is set to be larger, so that the efficiency and the equipment reliability are reduced. The energy consumption caused thereby also has a strong impact on application of inductive ignition to a motorcycle. The scheme provided by the invention comprises a control circuit, a high pressure pack, a driving circuit, a switching circuit and a detection circuit, wherein the detection circuit is used for detecting a primary current up-to-standard moment and comparing with an ignition moment to obtain dwell angle deviation and correct the dwell angle so as to keep the ignition voltage at the optimal design value constantly. A detection working condition parameter is increased and a mathematical model is referred, so that the ignition energy period and working condition requirement are accurately and quantitatively matched, collectively referring to as an optimal dwell angle ignition circuit and an optimal control method of a gasoline engine. The problem that the ignition energy is configured according to a constant value or a working condition by the gasoline engine is completely solved. The ignition energy consumption is further reduced by using development of an ignition technology and matching with a new technology of the engine. A battery and a magnetic motor cannot be increased by upgrading CDI (Capacitor Discharge Ignition) of a motorcycle to inductive ignition.

The invention discloses a method and device for recycling heat energy in reduction exhaust in a polysilicon production process. The method comprises the following steps: reduction exhaust and chlorsilane are subjected to primary heat exchange in a tower bottom reboiler; and after heat exchange, part of the chlorsilane is vaporized and delivered into a chlorsilane purification tower to serve as a heat source for the chlorsilane purification tower, the reduction exhaust subjected to heat exchange is delivered into a condenser, and the chlorsilane in the reduction exhaust is condensed into liquid to be delivered into the chlorsilane purification tower. The device for recycling the heat energy in reduction exhaust in the polysilicon production process comprises a tower top condenser, a purification tower, a tower bottom reboiler, an exhaust condenser, a chlorsilane buffer tank and a chlorsilane delivery pump which are sequentially connected, wherein the outlet of the chlorsilane delivery pump is connected with the purification tower. By means of the technical improvement provided by the invention, the steam consumption of the reduction rectification system can be reduced by 40%, the load of the refrigerator of a CDI (capacitor discharge ignition) system can be reduced by 7% simultaneously, and the circulating water consumption is reduced by about 52.44%, thereby achieving the purposes of favorable energy conservation and consumption reduction.

The invention relates to an ignition control system of a tube furnace. The system comprises a high-energy ignition device, a burner, an automatic ignition control system and a burning control system, wherein the high-energy ignition device adopts a capacitive discharge type igniter capable of providing the safe and reliable ignition performance; the burner is provided with a flame detection deviceand can realize the regulation of burning-supporting air and fuel in certain proportion; and the automatic ignition control system has the functions of flame detection, safety protection of the furnace and self diagnosis. The invention has the advantages of high heat efficiency, safety and reliability, stable and controllable burning, energy saving and emission reduction.

The invention discloses a temperature control and energy saving system and process for polycrystalline silicon reduction furnaces. The system is characterized by comprising a trichlorosilane concentrated carburetor, a hydrogen preheater, a pipeline static mixer, a reduction furnace, a silicon powder filter and a tail gas temperature-control cooler, wherein the hydrogen preheater 2 is connected to the pipeline static mixer 3, and the trichlorosilane concentrated carburetor is connected to a tube pass of the hydrogen preheater; the pipeline static mixer is connected to the reduction furnace; the tail gas outlet of the reduction furnace 4 is connected to the shell-pass high-temperature gas phase inlet of the tail gas temperature-control cooler, and the shell-pass low-temperature gas phase outlet of the tail gas temperature-control cooler is connected to the shell-pass gas phase inlet of the hydrogen preheater. According to the system and application method disclosed by the invention, feed compositions are uniform, the feed temperature is stable and controllable, the heat energy is used fully, the power consumption of the reduction furnace and the system is reasonably reduced, and the growth quality of polycrystalline silicon is controlled better; silicon powder of a tail gas pipeline is effectively removed, thereby protecting valves of the tail gas pipeline and facilities of a CDI (Capacitor Discharge Ignition) system.

The invention discloses a high-frequency and high-energy spark discharge ignition device, which belongs to the technical field of ignition engines. The invention includes a low-voltage on-board power supply, a control module, a high-frequency discharge module, a high-energy supplementary module and a spark plug; the low-voltage on-board power supply provides power supply for the entire system; the control module includes the logic allocation of the control signals of the high-frequency discharge control module and the high-energy supplementary module , to achieve precise control of discharge frequency and discharge duration; the high-frequency discharge module includes a first capacitor, a second capacitor and a high-voltage coil for providing high-frequency breakdown voltage; the first input end of the high-voltage coil is connected to the first capacitor discharge ignition output end, The first output end of the high-voltage coil is connected to the ground wire, the second input end of the high-voltage coil is connected to the output end of the high-voltage coil, and the second output end of the high-voltage coil is connected to the spark plug and the high-energy supplementary module. The invention is applied to the ignition of an ignition type engine, improves the energy of the ignition device, and precisely controls the discharge frequency and the discharge duration.