Basf Corporation

Mann+hummel Gmbh

Basf Mobile Emissions Catalysts LLC

Yun Fei Qi

Jun Jiang

Attilio Siani

Weiyong Tang

Shau Lin Chen

Liang Fang Lv

Yu Lin Qiu

Weixin Jia

Yan Zhu Lei

The present invention relates to a particulate filter, in particular a particulate filter for use in an emission treatment system of an internal combustion engine. The particulate filter provides an advantageous combination of low back pressure and high fresh filtration efficiency.

Particulate filter

The present invention relates to a catalyzed particulate filter and methods comprising the filter for treatment of an exhaust gas from a gasoline engine, the catalyzed particulate filter comprising a gasoline particulate filter (GPF); a major catalytic layer coated onto or within an inlet side, an outlet side, or both sides of the GPF surfaces, the major catalytic layer comprising a first composition, wherein the first composition comprising a first support material; and a first platinum group metal (PGM); and a minor functional material layer placed onto or within an inlet side, an outlet side, or both sides of the GPF surfaces; the minor catalytic layer comprising a second composition; wherein the major catalytic layer has a higher loading than the minor functional material layer; the minor functional material layer is placed on top of the major catalytic layer, or the major catalytic material layer is placed on top of the minor functional layer. The catalyzed particulate filter provides an improved catalytic efficiency in conjunction with an efficient filter.

Catalyzed gasoline particulate filter

A catalyst for gasoline engine exhaust gas after-treatment, comprising Pt and optionally at least one other platinum group metal on a hydrothermal stable support material which is coated onto a gasoline particulate filter. The catalyst oxidizes particulate matter trapped in the gasoline particulate filter under low temperature and abates NO, CO and HC. Also a process for preparing the catalyst is disclosed, and a method for after-treatment of gasoline engine exhaust gas using the catalyst is disclosed.

Catalyst for gasoline engine exhaust gas aftertreatment

A silencer having an outer housing; and a central perforated tube through which air flows. The silencer further includes an additional perforated structure located between the central perforated tube and the outer housing, a first chamber is formed between the central perforated tube and the additional perforated structure, and the additional perforated structure is configured such that at least one second chamber is formed, which is at least partially located radially outside of the first chamber, where the second chamber is communicated with the first chamber by perforates. The disclosure further relates to a vehicle engine having the silencer. The silencer is compact in structure, and has a better broadband silencing effect.

Silencer and vehicle engine including same

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Shanghai, China

Yun Fei Qi