-
公开(公告)号：US5417060A
公开(公告)日：1995-05-23
申请号：US169762
申请日：1993-12-20
CPC分类号： F02D41/1441 , F01N2550/02 , F02B1/04
摘要： An air fuel ratio controlling apparatus for an internal combustion engine, comprises: a catalytic converter, provided in an exhaust system for purifying an exhaust gas of the engine; a first oxygen density sensor, provided upstream from the catalytic converter in the exhaust system, responsive to a first oxygen density of a first exhaust gas of the engine for detecting whether an air fuel ratio of the engine is in a rich condition or a lean condition with respect to a theoretical air fuel ratio of the engine; a second oxygen density sensor, provided downstream from the catalytic converter in the exhaust system, responsive to a second oxygen density of a second exhaust gas passed through the catalytic converter for detecting whether the air fuel ratio of the engine is in a rich or a lean condition with respect to a theoretical air fuel ratio of the engine; and an air fuel ratio control portion for controlling the air fuel ratio in accordance with the detection results of the first and second oxygen sensors, wherein; the first oxygen sensor has a function for oxidizing and reducing a specific component more powerful than that of the second oxygen density sensor.
摘要翻译： 一种用于内燃机的空燃比控制装置，包括：催化转化器，设置在用于净化发动机废气的排气系统中; 第一氧浓度传感器，其设置在排气系统中的催化转化器的上游，响应于发动机的第一排气的第一氧气密度，用于检测发动机的空燃比是处于浓气条件还是贫条件 相对于发动机的理论空燃比; 第二氧浓度传感器，其设置在排气系统中的催化转化器的下游，响应于通过催化转化器的第二废气的第二氧气密度，用于检测发动机的空燃比是富或稀 相对于发动机的理论空燃比的条件; 以及空燃比控制部，其根据所述第一氧传感器和所述第二氧传感器的检测结果来控制所述空燃比，其中， 第一氧传感器具有比第二氧浓度传感器更强大的氧化和还原特定成分的功能。
-
公开(公告)号：US5168068A
公开(公告)日：1992-12-01
申请号：US369319
申请日：1989-06-20
CPC分类号： G01N1/2273 , G01N1/2214 , G01N1/405 , G01N2001/2276 , Y10T436/205831
摘要： A passive gas sampling apparatus for detecting an analyte gas, which apparatus includes (1) a shell enclosing an adsorbent and (2) a diffusion tube extending through the shell and having (a) an inlet opening means outside the shell, through which the analyte gas may enter the diffusion tube, and (b) an outlet opening imbedded in the adsorbent inside the shell; and a method for using such apparatus.
摘要翻译： 一种用于检测分析物气体的无源气体取样装置，该装置包括（1）封闭吸附剂的壳体和（2）延伸穿过壳体的扩散管，并且具有（a）外壳外的入口开口装置，分析物 气体可以进入扩散管，和（b）嵌入在壳体内的吸附剂中的出口; 以及使用这种装置的方法。
-
3.发明授权Fuel electrode of solid oxide fuel cell and process for the production of the same 失效固体氧化物燃料电池的燃料电极及其制造方法公开(公告)号：US06790474B1
公开(公告)日：2004-09-14
申请号：US09319688
申请日：1999-06-09
IPC分类号： B05D512
CPC分类号： H01M4/9066 , H01M2008/1293 , H01M2300/0074
摘要： There is disclosed a fuel electrode of solid oxide fuel cells which is made of a cermet composed of yttria-stabilized zirconia containing a transition metal dissolved therein and nickel (Ni) or a cermet composed of yttria-stabilized zirconia containing a transition metal dissolved therein, nickel (Ni) and cerium oxide containing a divalent or trivalent metal dissolved therein, and which can be obtained by adding a solution of a metallo-organic compound of yttrium (Y) and a solution of a metallo-organic transition-metal compound to a solution of a metallo-organic compound of zirconium (Zr) to prepare a mixed solution of metallo-organic compounds of Zr—Y-transition metal; adding NiO powder or a powder mixture of NiO powder with cerium oxide powder containing a divalent or trivalent metal oxide dissolved therein to the mixed solution of the metallo-organic compounds to prepare a slurry; and subjecting the slurry to hydrolysis, polycondensation, pyrolysis, annealing and reduction successively. The fuel electrode is formed on a solid electrolyte layer by a screen printing process.
摘要翻译： 公开了一种固体氧化物燃料电池的燃料电极，其由包含溶解有过渡金属的氧化钇稳定的氧化锆和由镍（Ni）构成的金属陶瓷或由其中溶解有过渡金属的氧化钇稳定的氧化锆组成的金属陶瓷制成， 可以通过将钇（Y）的金属有机化合物和金属有机过渡金属化合物的溶液加入到金属 - 有机过渡金属化合物的溶液中而获得的镍（Ni）和含有二价或三价金属的氧化铈 锆（Zr）的金属有机化合物溶液制备Zr-Y-过渡金属的金属有机化合物的混合溶液; 将NiO粉末或NiO粉末与其中溶解有二价或三价金属氧化物的氧化铈粉末的粉末混合物加入到金属有机化合物的混合溶液中以制备浆料; 并对浆料进行水解，缩聚，热解，退火和还原。 燃料电极通过丝网印刷工艺形成在固体电解质层上。
-
公开(公告)号：US5128268A
公开(公告)日：1992-07-07
申请号：US368601
申请日：1989-06-20
IPC分类号： G01N27/44
CPC分类号： G01N27/44 , Y10S436/902 , Y10T436/177692 , Y10T436/186 , Y10T436/204998 , Y10T436/205831 , Y10T436/206664
摘要： An apparatus for detecting or measuring the concentration of an analyte gas in a gas sample, which apparatus comprises a donor polymer and a halogen-containing compound positioned to contact the analyte gas and capable of reacting with the analyte gas to yield halogen; and a method for using the apparatus.
摘要翻译： 一种用于检测或测量气体样品中分析物气体的浓度的装置，该装置包括供体聚合物和定位成接触分析气体并能够与分析气体反应以产生卤素的含卤素化合物; 以及使用该装置的方法。
-
5.发明授权
公开(公告)号：US5224347A
公开(公告)日：1993-07-06
申请号：US754981
申请日：1991-09-06
CPC分类号： F02D35/003 , F01N11/007 , F02D41/1441 , F02D41/1487 , F01N2430/06 , F01N2550/02 , Y02T10/22 , Y02T10/47
摘要： A method and apparatus for controlling and improving the air-fuel ratio of a gas engine by controlling the air-fuel ratio on an exhaust purifying apparatus such as a three way catalyst in use with the gas engine. The method involves the steps of modulating a vibrational drive current for driving a bypass value with waveforms such as rectangular wave, sinusoidal wave, triangular wave, etc., with predetermined periods and amplitudes, in response to signals transmitted from a main oxygen sensor and a pressure sensor. The main oxygen sensor being installed on an up-stream side relative to the three way catalyst interposed on an exhaust line of the gas engine, and the pressure sensor being installed on an intake line in communication with a mixer; detecting distortion of responded waveforms of signals transmitted from a sub oxygen sensor, which sensor is installed on a down-stream side of the three way catalyst; and controlling the drive current so as to remove the detected distortions, in order to help optimize the air-fuel ratio of the gas engine. The invention thus helps in optimizing control of the air-fuel ratio and helps in the purification efficiency of the gas engine exhaust.
-
-
-
-
搜索结果
5 条记录 (耗时 0.019 秒)
