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    • 12. 发明授权
    • System for reduction of harmful exhaust emissions from diesel engines
    • 减少柴油发动机有害废气排放的系统
    • US6422008B2
    • 2002-07-23
    • US83579701
    • 2001-04-16
    • ENGELHARD CORP
    • VOSS KENNETH EWILDMAN TIMOTHY DNORRIS MICHAEL GRICE GARY W
    • B01D53/94C23C30/00F01N3/28F01N13/10F01N13/14F02B3/06F02B51/02F01N3/20
    • F01N13/14B01D53/944C23C30/00F01N3/2807F01N13/102F02B3/06F02B51/02Y02T10/126Y10T428/12056
    • Methods and apparatus for reducing the TPM level of a diesel engine exhaust stream by providing a suitable oxidation catalyst into the exhaust train. The oxidation catalyst may be incorporated into a thermal insulative coating on the inner surface of the exhaust train, particularly the exhaust manifold and exhaust pipes prior to the turbocharger. Alternatively, when the exhaust train includes a turbocharger, the catalyst can be in a separate monolithic unit between the engine and the turbocharger. The system may also include an improved diesel oxidation catalyst unit having a metal monolithic substrate. The oxidation catalyst can also be incorporated into a thermal insulative coating inside the cylinders, particularly on non-rubbing surfaces such as The invention also includes the use of a protective mullite top coat on the thermal coating. A further embodiment is the use of a stainless steel bond coat to bind the thermal coating to a metallic substrate, particularly an aluminum substrate.
    • 通过在排气系中提供合适的氧化催化剂来降低柴油发动机废气流的TPM水平的方法和装置。 氧化催化剂可以结合到排气系统的内表面上的绝热涂层中,特别是在涡轮增压器之前的排气歧管和排气管。 或者,当排气系统包括涡轮增压器时,催化剂可以在发动机和涡轮增压器之间的分离的单体单元中。 该系统还可以包括具有金属整体式基底的改进的柴油氧化催化剂单元。 氧化催化剂也可以结合到气缸内的绝热涂层中,特别是在非摩擦表面上,例如本发明还包括在热涂层上使用保护莫来石顶涂层。 另一个实施例是使用不锈钢粘合涂层将热涂层结合到金属基底,特别是铝基底。