About 147 results
https://drivepatents.com/patents/1079260 · 16 Mar 2005
In an internal combustion engine (10), fuel is added to exhaust gas from a fuel adding valve (46) to increase the temperature of a catalyst bed of a PM trapping filter (26). The amount of fuel to be added to exhaust gas is corrected in accordance with the ...
https://drivepatents.com/patents/1079231 · 16 Mar 2005
In the state where an air-fuel ratio AF is equal to or lower than a reference air-fuel ratio AFr (AF ≤ AFr) ("YES" in step S204), when at least one of the condition that an upstream side exhaust gas temperature Texin of an exhaust gas control catalyst on...
https://drivepatents.com/patents/1079234 · 16 Mar 2005
An exhaust filter 38 includes a filter for trapping particulate matter contained in exhaust gas and a NOx storage reduction catalyst coated on the filter. As an S release control of the exhaust filter 38, a fuel adding valve 68 intermittently adds fuel to ...
https://drivepatents.com/patents/1079228 · 16 Mar 2005
A dynamic catalyst bed temperature Td is computed by taking the thermal capacity of an exhaust system (36,38,40) into consideration. Therefore, even when the operating condition of an engine (2) is in transition, it is possible to obtain a bed temperature ...
https://drivepatents.com/patents/1079218 · 16 Mar 2005
During the warm-up to temperature for regeneration of an automotive nitrogen oxide storage catalytic converter (5) diesel engine exhaust, a rich mixture is fed to the catalyst. Unburned hydrocarbons and carbon monoxide then react with oxygen from a storage...
https://drivepatents.com/patents/1079302 · 16 Mar 2005
There are provided a particulate filter (12) and a manual regeneration switch (28). When the manual regeneration switch (28) is operated and the vehicle is in a stop state, the engine speed is adjusted to a first target higher than a normal idle speed to r...
https://drivepatents.com/patents/1079471 · 9 Mar 2005
Emission control means of an exhaust purifying apparatus supplies fuel to exhaust gas through an exhaust passage, thereby setting the temperature of a catalyst to a temperature at which sulfur oxides occluded by the catalyst can be emitted. Based on change...
https://drivepatents.com/patents/1079483 · 9 Mar 2005
To provide an exhaust gas purifying system capable of forcibly regenerating DPF by efficiently raising the temperature of exhaust gas even when an exhaust gas temperature is very low at the time of low load and low engine speed such as an idling operation....
https://drivepatents.com/patents/1079433 · 9 Mar 2005
An exhaust purifying apparatus (11) includes regeneration control means. The control means regenerates a catalyst (32,33) by combusting and removing particulate matter deposited on the catalyst (32,33) when catalyst regeneration requirements are all satisf...
https://drivepatents.com/patents/1079449 · 9 Mar 2005
In an exhaust emission control apparatus for an internal combustion engine (10), a state where a large amount of smoke is generated is predicted on the basis of an operation state of the internal combustion engine, that is, the internal combustion engine i...