Diesel particulate filter and exhaust emission control system
First Claim
Patent Images
1. A diesel particulate filter, comprising:
- a carrier which has filter functions, wherein fine pores are formed in said carrier; and
a perovskite type complex oxide in particulate form supported by said carrier and expressed by the following formula (1);
La1-xBaxMnyFe1-yO3
(1)in which 0<
x<
0.7 and 0≦
y≦
1,wherein the particle diameter of the perovskite type complex oxide is smaller than the fine pore diameter of said carrier.
3 Assignments
0 Petitions
Accused Products
Abstract
Diesel particulate filter that can lower the particulate matter (PM) combustion start temperature and use material containing silicon (Si) for a carrier. The carrier, which has a filter function, is allowed to support a perovskite-type complex oxide expressed by formula (1) as follows, wherein 0<x<0.7 and 0≦y≦1: formula (1)=La1-xBaxMnyFe1-yO3.
43 Citations
11 Claims
-
1. A diesel particulate filter, comprising:
-
a carrier which has filter functions, wherein fine pores are formed in said carrier; and a perovskite type complex oxide in particulate form supported by said carrier and expressed by the following formula (1);
La1-xBaxMnyFe1-yO3
(1)in which 0<
x<
0.7 and 0≦
y≦
1,wherein the particle diameter of the perovskite type complex oxide is smaller than the fine pore diameter of said carrier. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An exhaust emission control system installed in an exhaust gas passage of a diesel engine, comprising:
-
a diesel particulate filter that comprises a carrier which has filter functions and a perovskite type complex oxide supported by said carrier and expressed by the following formula (1); and a carrier which supports an oxidation catalyst installed separately from the diesel particulate filter;
La1-xBaxMnyFe1-yO3 (1)(where 0<
x<
0.7 and 0≦
y≦
1 in formula (1) above).
-
-
7. An exhaust emission control system installed in an exhaust gas passage of a diesel engine, comprising:
-
a diesel particulate filter that comprises a carrier which has filter functions and a perovskite type complex oxide supported by said carrier and expressed by the following formula (1); and a carrier which supports an oxidation catalyst installed separately from the diesel particulate filter;
La1-xBaxMnyFe1-yO3
(1)(where 0.1≦
x≦
0.6 and 0≦
y≦
1 in formula (1) above).
-
-
8. An exhaust emission control system installed in an exhaust gas passage of a diesel engine, comprising:
-
a diesel particulate filter that comprises a carrier which has filter functions and a perovskite type complex oxide supported by said carrier and expressed by the following formula (1); and a carrier which supports an oxidation catalyst installed separately from the diesel particulate filter;
Lal-xBaxMnyFe1-yO3
(1)(where 0<
x<
0.7 and y=0 in formula (1) above).
-
-
9. An exhaust emission control system installed in an exhaust gas passage of a diesel engine, comprising:
-
a diesel particulate filter that comprises a carrier which has filter functions and a perovskite type complex oxide supported by said carrier and expressed by the following formula (1); and a carrier which supports an oxidation catalyst installed separately from the diesel particulate filter;
La1-xBaxMnyFe1-yO3
(1)(where 0<
x<
0.7 and y=1 in formula (1) above).
-
-
10. An exhaust emission control system installed in an exhaust gas passage of a diesel engine, comprising:
-
a diesel particulate filter that comprises a carrier which has filter functions and a perovskite type complex oxide supported by said carrier and expressed by the following formula (1), wherein the perovskite type complex oxide exists in a particulate form, fine pores are formed in the carrier, and the particle diameter of the perovskite type complex oxide is smaller than the fine pore diameter of the carrier; and a carrier which supports an oxidation catalyst installed separately from the diesel particulate filter;
La1-xBaxMnyFe1-yO3
(1)(where 0<
x<
0.7 0≦
y≦
1 and in formula (1) above).
-
-
11. An exhaust emission control system installed in an exhaust gas passage of a diesel engine, comprising:
-
a diesel particulate filter that comprises a carrier which has filter functions, a perovskite type complex oxide supported by said carrier and expressed by the following formula (1)
La1-xBaxMnyFe1-yO3
(1)in which 0<
x<
0.7 0≦
y≦
1, andan oxidation catalyst containing at least one element selected from the group consisting of Pt, Rh, and Pd, which is supported by said carrier; and a carrier which supports an oxidation catalyst installed separately from the diesel particulate filter.
-
Specification