About 147 results
https://drivepatents.com/patents/1079618 · 2 Mar 2005
When sulfur components accumulate on an exhaust gas control catalyst (36a, 38a), a PM accumulation amount PMsm is increased and the frequency with which a lean-burn temperature increase routine is executed under fine particle regeneration control is increa...
https://drivepatents.com/patents/1079810 · 23 Feb 2005
In a process to operate a lean-burn automotive piston engine with a NOx storage catalytic converter, the NOx capacity and O 2capacity are determined and adapted for the converter in a given condition, and compared with the capacity in fresh condition, trig...
https://drivepatents.com/patents/1083435 · 6 Oct 2004
In a small-type vehicle including a cylinder head possessed by an engine main body mounted on a vehicle body frame, an intake passage portion extending rectilinearly so as to guide cleaned air from an air cleaner disposed on the upper side of the cylinder ...
https://drivepatents.com/patents/1083353 · 6 Oct 2004
On starting an internal combustion motor (1), it is ensured that there is a sufficient amount of oxygen in the exhaust gas flow path (7) for the oxidation of hydrocarbons and carbon monoxide emissions through the oxidation catalysts (6,8,9,10), and especia...
https://drivepatents.com/patents/1085282 · 4 Aug 2004
An NOx occluding and reducing catalyst is disposed in an exhaust gas passage of an internal combustion engine that operates at a lean air-fuel ratio. When the engine is operating at a lean air-fuel ratio, the NOx occluding and reducing catalyst absorbs NOx...
https://drivepatents.com/patents/1085768 · 7 Jul 2004
Process for operating a lean-burn I.C. engine involves selecting a theoretical value of a NOx crude emission depending on a value for the condition signal of the NOx storage catalyst. An Independent claim is also included for a vehicle containing a lean bu...
https://drivepatents.com/patents/1085889 · 30 Jun 2004
A NOx catalyst (10) traps nitrogen oxides in the exhaust gas of a diesel engine (40), and particulate matter is trapped by a filter (20). The sulfur poisoning of the NOx catalyst (10) is eliminated using exhaust gas corresponding to a rich air-fuel ratio. ...
https://drivepatents.com/patents/1086071 · 23 Jun 2004
A fuel injection control device includes an after treatment device (30) for purifying exhaust gas by the action of a catalyst (32), an exhaust gas temperature detector (34) for detecting the exhaust gas temperature, and a controller (12) for controlling th...
https://drivepatents.com/patents/1086561 · 9 Jun 2004
The invention provides an exhaust gas purification device that can prevent deterioration of the emission during a regeneration process for a particular filter for trapping particulates contained in the exhaust gas. Particulate filter regeneration timing de...
https://drivepatents.com/patents/1086918 · 26 May 2004
Process for operating a multi-cylinder IC engine comprises not allowing a lambda degree of effectiveness of the cylinders of the engine operating with a lean or stoichiometric air-fuel ratio to exceed a prescribed gradient during the transition from the no...