About 60 results
https://drivepatents.com/patents/1015216 · 9 Mar 2011
A method of controlling exhaust gas recirculation (EGR) in a turbocharged engine system (10) including an engine (12), an induction subsystem (14) in upstream communication with the engine (12), an exhaust subsystem (16) in downstream communication with th...
https://drivepatents.com/patents/1067031 · 31 May 2006
The invention refers to a method and apparatus for converting NO x and comprises the step of controlling a temperature in a NO x -converter by adsorbing NO x in the converter at a temperature below a predetermined temperature value to a predetermined value...
https://drivepatents.com/patents/1067044 · 31 May 2006
An exhaust gas emission control device of an internal combustion engine comprises: DPF (17), provided in an exhaust passage (11) of a diesel engine (1), for trapping a particulate in an exhaust gas; ECU (30) for determining whether regeneration of DPF is n...
https://drivepatents.com/patents/1067395 · 17 May 2006
The invention relates to an engine self-diagnosis system (1) capable of performing diagnosis of the light-off performance of a catalyst (50) at a low cost and high accuracy without requiring addition or improvement of a sensor, etc. The engine self-diagnos...
https://drivepatents.com/patents/1067929 · 26 Apr 2006
The invention relates to a Method of purging a lean NO x trap (LNT) of an Internal Combustuion engine with an In-Cylinder post injection for at least achieving an air to fuel (A/F) ratio close to stoichiometric. At least two seperat post injections are app...
https://drivepatents.com/patents/1070399 · 1 Feb 2006
The device has a determination unit (27) determining an increase per unit time of a mass of nitrogen oxide as a function of a mass of oxide stored in a nitrogen oxide trap, a trap temperature and oxide flowrate, when exhaust gases in the trap are lean. The...
https://drivepatents.com/patents/1071909 · 7 Dec 2005
A DPF (4) is used in an internal combustion engine for trapping PM discharged from an engine body. Presence and absence of an abnormality in the DPF (4) is evaluated using differential pressure, which is between the front and the rear of the DPF (4). The d...
https://drivepatents.com/patents/1072809 · 2 Nov 2005
The differential pressure upstream and downstream of a filter (1) which traps particulate matter contained in the exhaust gas of a diesel engine (20) is detected by a differential pressure sensor (3), and regeneration control is performed on the basis of t...
https://drivepatents.com/patents/1072859 · 2 Nov 2005
Determination of the charge in a filter for elimination of pollutants from the exhaust gases of an internal combustion engine. The process comprises the following stages (1) evaluation of the charge in the filter by a predetermined algorithm; (2) calculati...
https://drivepatents.com/patents/1075343 · 3 Aug 2005
The method involves detecting the actual catalysing temperature in dependence on reaching a predetermined oxygen storage capacity value of the oxygen reservoir. This temperature is compared with a comparison value related to the same oxygen storage capacit...