INTERNAL COMBUSTION ENGINE EXHAUST GAS CLEANING DEVICE Russian patent published in 1999 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: device has housing, inlet and outlet branch pipes in form of truncated ends, two catalyst blocks formed by corrugated and plain metal tapes with through holes arranged in alternating layers over spiral, and heat-resistant metal gauze. Thickness of catalyst layer is 10-100 μm at the following relationship of components, mass %: block 1: Fe 2.0-5.0; Ni 2.0-5.0; Zr 0.2-0.4; Pd 0.05-0.2; Ag 0.05-0.2; TiO₂ 1.0-1.5; Al₂O₃ - the rest. Block 2: Mn 1.0-2.0; Co 0.6-1.6; Cu 1.0-2.5; Cr 0.5-1.5; Pd 0.5-1.1; Zr 2.0-3.0; Al₂O₃ - the rest. EFFECT: increased catalytic activity of device and its capability of overcoming deformation changes at heat action. 3 cl, 1 dwg