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    • 21. 发明授权
    • Emission control system for an automobile
    • 汽车排放控制系统
    • US5816214A
    • 1998-10-06
    • US622372
    • 1996-03-27
    • Yukio KinugasaToru KidokoroTakaaki Itou
    • Yukio KinugasaToru KidokoroTakaaki Itou
    • F02M33/00B08B15/00F02F7/00F02M25/00F02M35/024F02M35/10
    • B08B15/00F02M25/00F02F7/006F05C2225/08
    • The emission control system of the present invention removes the small amounts of polluting gases released from various parts of the automobile. These polluting gases are released from, for example, fuel oozing out from connections of the pipes in the fuel system, lubricating oil oozing out from engine body, and solvents and adhesives remaining in the interior and exterior parts of the automobile. In the emission control system of the present invention, collectors and suction pipes are provided. The collectors are disposed at the parts of the automobile from where the polluting gases are released in such a manner that the collectors enclose these parts. The suction pipes connect the respective collectors to an intake nose of an air cleaner disposed in an intake air passage of the engine. Therefore, the polluting gases released from various parts of the automobile are drawn into the engine through the respective suction pipes before they diffuse into the atmosphere, and are burned in the engine. Thus, according to the present invention, the polluting gases released from various parts of the automobile are prevented from diffusing into the atmosphere.
    • 本发明的排放控制系统除去从汽车各部分释放的少量污染气体。 这些污染气体例如从燃料系统中的管道的连接处渗出的燃料,从发动机主体渗出的润滑油以及残留在汽车的内部和外部的溶剂和粘合剂释放出来。 在本发明的排放控制系统中,设置有收集器和抽吸管。 收集器被布置在汽车的部分处,其中污染气体被释放,使得收集器围绕这些部件。 抽吸管将各个收集器连接到设置在发动机的进气通道中的空气滤清器的进气口。 因此,从汽车各部分释放的污染气体在扩散到大气中之前通过各个吸入管被吸入发动机,并在发动机中燃烧。 因此,根据本发明,防止从汽车的各个部分释放的污染气体扩散到大气中。
    • 22. 发明授权
    • Method for purifying combustion exhaust gas
    • 燃烧废气净化方法
    • US5783160A
    • 1998-07-21
    • US590714
    • 1996-01-24
    • Yukio KinugasaKouhei IgarashiTakaaki ItouToshifumi TakaokaMichihiro OhashiKoji Yokota
    • Yukio KinugasaKouhei IgarashiTakaaki ItouToshifumi TakaokaMichihiro OhashiKoji Yokota
    • B01D53/94F01N3/08F01N3/20F01N3/22F01N13/02B01D53/58
    • B01D53/9481B01D53/9409B01D53/9436B01D53/9495F01N13/009F01N3/0842F01N3/0871F01N3/206F01N3/22F01N3/222F01N2230/04F01N2240/25F01N2250/12F01N2610/02Y02T10/22
    • The method for purifying combustion exhaust gas according to the present invention utilizes a NH.sub.3 decomposing catalyst. The NH.sub.3 decomposing catalyst in the present invention is capable of converting substantially all of the NH.sub.3 in the combustion exhaust gas to N.sub.2 when the air-fuel ratio of the exhaust gas is lean and the temperature of the catalyst is within a predetermined optimum temperature range. Further, when the exhaust gas contains NO.sub.x in addition to NH.sub.3, the NH.sub.3 decomposing catalyst is capable of reducing the NO.sub.x in the optimum temperature range even though the air-fuel ratio of the exhaust gas is lean. In the present invention, the conditions of the exhaust gas containing NO.sub.x are adjusted before it is fed to the NH.sub.3 decomposing catalyst in such a manner that the temperature of the exhaust gas is within the optimum temperature range and the air-fuel ratio of the exhaust gas is lean. Further, NH.sub.3 is added to the exhaust gas before it is fed to the NH.sub.3 decomposing catalyst. Therefore, a lean air-fuel ratio exhaust gas, at a temperature within the optimum temperature range, which contains both the NO.sub.x and NH.sub.3 is fed to the NH.sub.3 decomposing catalyst, and the NO.sub.x, as well as the NH.sub.3, in the exhaust gas is completely resolved by the NH.sub.3 decomposing catalyst.
    • 根据本发明的用于净化燃烧废气的方法利用NH 3分解催化剂。 本发明中的NH 3分解催化剂能够在排气的空燃比稀薄且催化剂的温度在预定的最佳温度范围内时将燃烧废气中的NH 3基本上全部转化成N2。 此外,当排气中含有除NH 3之外的NOx时,NH 3分解催化剂即使在排气的空燃比较稀的情况下也能够将NOx还原到最佳温度范围。 在本发明中,在将废气的温度设定在最佳温度范围内并排气的空燃比的方式调节含有NOx的废气的条件,然后送入NH 3分解催化剂 气体很瘦 此外,在将其输入到NH 3分解催化剂之前,将NH 3加入到废气中。 因此,在含有NOx和NH 3的最佳温度范围内的温度下,贫空燃比废气被供给到NH 3分解催化剂中,排气中的NOx以及NH 3是 完全由NH3分解催化剂分解。