| US 7,514,047 B2 | ||
| Exhaust gas purifying apparatus | ||
| Hirohito Hirata, Suntou-gun (Japan); Masaru Kakinohana, Susono (Japan); and Hideo Yahagi, Gotenba (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota (Japan) | ||
| Filed on Jan. 09, 2004, as Appl. No. 10/753,362. | ||
| Claims priority of application No. 2003-006989 (JP), filed on Jan. 15, 2003; application No. 2003-055756 (JP), filed on Mar. 03, 2003; and application No. 2003-058836 (JP), filed on Mar. 05, 2003. | ||
| Prior Publication US 2004/0141890 A1, Jul. 22, 2004 | ||
| Int. Cl. B01J 19/08 (2006.01) | ||
| U.S. Cl. 422—186.04 [60/275] | 21 Claims |
| 1. An exhaust gas purifying apparatus for trapping and burning particulate matter (PM), which comprises electrodes and an insulative honeycomb structure having a number of cell passages, wherein the electrodes make an electric field in said honeycomb structure, the electric field not being parallel to the direction of the cell passages of said honeycomb structure, the exhaust purifying gas apparatus further comprising an electric-discharge electrode that extends upstream of an upstream end of the honeycomb structure, the electric-discharge electrode being configured to promote an electric discharge therefrom to charge the PM before the PM enters the honeycomb structure. |