Abstract:
An ion current detection apparatus for an internal combustion engine includes a voltage limiting device for limiting an amount of counterelectromotive force of a primary coil of ignition coil applied to switching elements, a capacitor for applying an ion current detection voltage to a spark plug, and an ion current detection circuit for detecting an ion current wherein the capacitor is connected to the voltage limiting device.
Abstract:
A cadmium rare gas discharge lamp of the short arc type that has a high power of the spectra in a wavelength range of 210 nm to 230 nm and a stable lamp voltage in lighting operation for a long period. An arc tube 1 is provided within which are disposed opposed, spaced apart electrodes 2, 3 and thermal insulation films 6, 7. A rare gas is encapsulated together with metal cadmium and a quartz glass is used for the material of the arc tube whose OH radical has a weight content of no more than 200 ppm. Electrodes 4 and 5 are spaced apart no more than 10 mm, so that with a lamp current at least 20 amperes, an arc of the electrode-stable type is formed and radiant light of Cd ions obtained. For the encapsulated rare gas, in one embodiment at least one of the rare gases neon, argon or krypton, are used and are encapsulated at a gas pressure of 35 kPa to 2.5 MPa at a standard temperature of 25.degree. C. The arc tube 1 is formed of quartz glass, electrodes 2 and 3 are placed opposite one another. In another embodiment, a halogen gas is encapsulated in the arc to in an amount from 4.5.times.10.sup.-10 mol/cm.sup.3 of arc tube volume to 2.1.times.10.sup.-7 mol/cm.sup.3 of are tube volume.
Abstract translation:一种短弧型的镉稀释气体放电灯,其在210nm至230nm的波长范围内具有高功率的光谱,并且在长时间的照明操作中具有稳定的灯电压。 设置有电弧管1,其中设置相对的间隔开的电极2,3和绝热膜6,7,稀有气体与金属镉一起被密封,并且石英玻璃用于电弧管的材料,其OH 自由基的重量含量不超过200ppm。 电极4和5的间隔不超过10毫米,使得灯电流至少为20安培,形成电极稳定型弧,并获得Cd离子的辐射光。 对于包封的稀有气体,在一个实施方案中,使用至少一种稀有气体氖,氩或氪,并在25℃的标准温度下以35kPa至2.5MPa的气体压力包封。电弧管1 由石英玻璃形成,电极2和3彼此相对放置。 在另一个实施方案中,将卤素气体以弧形管体积的4.5×10 -10 mol / cm 3封装到管体积的2.1×10 -7 mol / cm 3的量。
Abstract:
A discharge lamp uses resonance lines which are emitted by ions in an excitation state and has a high short wave ultraviolet ray output. The lamp is provided with a pair of electrodes, having a reciprocal spacing of equal to or smaller than 12 mm, and is of the electrode-stable type. As the major emission material, cadmium is encapsulated in a quantity permitting a partial pressure P in operation of 3.times.10.sup.3 Pa to 1.3.times.10.sup.5 Pa. The lighting operation is performed in a state in which a lamp current J.sub.L fulfills the following condition (a):0.7