31 results about "Capacitor discharge ignition" patented technology

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.

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.