40results about How to "Low ignition energy" patented technology

A power-saving type of ignition apparatus is provided with a spark plug of which electrodes (30, 40) are regulated in their shapes to lower an amount of energy required for its ignition. To face to a tip (31) of a center electrode (30) extending from a mounting bracket (10), a cylindrical protrusion (41) is built on one surface (43) of an earth electrode (40). The protrusion extends toward the center electrode to form a discharge gap (50) between the protrusion and the tip of the center electrode. Both of the tip of the center electrode and the protrusion of the earth electrode are 2.3 [mm] or less in each diameter (D1, D2), thus an amount of energy required for ignition being limited to 17 [mJ] or less.

Described herein are fuel modifiers for natural gas reciprocating engines, while recognizing the application of the inventions herein may be applied more broadly, to other natural gas-based engine systems. The fuel modifiers are primarily free-radical initiators, and the presence of this fuel modifier allows the engine operator to operate the engine under leaner conditions because, while employing the same ignition energy, more free-radicals are formed, thus overcoming the problems associated with dilution of the pool of free-radicals in the flame.

The invention discloses a dimethyl ether compression ignition type rotor engine which comprises an oil tank. When a gasoline nozzle receives an oil injection signal and opens, an oil pump pumps out gasoline in the oil tank and injects the gasoline into a combustion chamber through a gasoline flowmeter; a spark plug type cylinder pressure sensor ignites, and a charge amplifier is connected to the spark plug type cylinder pressure sensor in series; an electronic control unit regulates and controls ignition and oil injection parameters; and an air inlet pressure sensor is connected to an air flowmeter in series, a dimethyl ether nozzle is further arranged behind the air inlet pressure sensor, dimethyl ether is sprayed into the combustion chamber through the nozzle after passing through a pressure reducing valve and the flowmeter, and a flame-retardant valve is further arranged on a dimethyl ether conveying pipeline. According to the dimethyl ether compression ignition type rotor engine, arotating speed of the engine and a pressure rise rate in a cylinder are used as trigger signals, and the electronic control unit controls a flow rate of fuel injected into the combustion chamber according to a working state of the engine, so that a control method of the compression ignition type rotor engine is realized, and the fuel economy and the heat efficiency of the rotor engine are effectively improved.

The invention discloses a micro-combustor with flame stability enhanced by gas preheating and reflux reinforcing. The micro-combustor comprises two low-speed small-cavity combustion chambers which arearranged up and down, two high-speed large-cavity combustion chambers are arranged on the left side and the right side of the low-speed small-cavity combustion chambers, and the two low-speed small-cavity combustion chambers communicates with the two high-speed large-cavity combustion chambers; the upper wall face and the lower wall face communicating with the two high-speed large-cavity combustion chambers are each provided with a gas preheating channel, and the gas preheating channels correspondingly communicate with the upper and lower low-speed small cavity combustion chambers; and firstreflux areas are formed in the communication positions of gas preheating channels and the low-speed small-cavity combustion chambers, second reflux areas are formed in the communication positions of the low-speed small-cavity combustion chambers and the high-speed large-cavity combustion chambers, and third reflux areas are formed in the positions, closes to gas inlets, of the insides of the high-speed large-cavity combustion chambers. According to the micro-combustor, combusting preheating is carried out so that the energy needed by ignition can be reduced, and the ignition delay time can beshortened; and the low-speed combustion chambers and the high-speed combustion chambers are arranged at the same time so that the ignition flameout limit can be increased, and the inlet speed can be widened.

The invention discloses an integrated thin film bridge igniter and a preparation method thereof. The integrated thin film bridge igniter sequentially comprises a base body overall element, a transition layer thin film, an ignition layer thin film and a composite bridge film layer from bottom to top. The preparation method comprises the steps that (1), the transition layer thin film and the ignition layer thin film are sequentially deposited on the surface of the base body overall element; (2), a zigzag thin film bridge area is etched on the ignition layer thin film through a laser etching process; and (3), a CuO thin film layer and an Al thin film layer are periodically and alternately deposited on the zigzag thin film bridge area to obtain the integrated thin film bridge igniter. The integrated thin film bridge igniter is free of packaging and capable of achieving low-energy reliable ignition, ignition energy can be effectively reduced, and ignition time can be effectively shortened; and the preparation method is low in cost, and batch production can be achieved.