About 104 results
https://drivepatents.com/patents/981615 · 27 Nov 2013
This invention relates to a control device for an internal combustion engine that includes an exhaust gas sensor in which an exhaust gas-side electrode of a sensor element is covered with a catalyst layer, and that effectively corrects a sensor output devi...
https://drivepatents.com/patents/983028 · 23 Oct 2013
Whether or not an electrically heated catalyst is normal is detected by accurately detecting whether the temperature of the electrically heated catalyst has gone up. To this end, provision is made for an air fuel ratio control device (10) that adjusts an a...
https://drivepatents.com/patents/983212 · 16 Oct 2013
A method for monitoring a fluid injection system is presented, in a system comprising: - a fluid dosing pump, activated by a coil, and - an electronic module, adapted to feed the coil with a driving voltage. The method comprises monitoring the evolution of...
https://drivepatents.com/patents/983485 · 9 Oct 2013
A process for desulfation of a NOx adsorber in a diesel internal combustion engine exhaust system is disclosed, which comprises: determining an amount of post fuel ( Q 2 ) required to reach a relatively rich target exhaust air fuel ratio (AFR rich ) on the...
https://drivepatents.com/patents/987246 · 21 Aug 2013
An object of the present invention is to accurately control an air/fuel ratio and improve an exhaust gas purification rate even in an internal combustion engine that uses an alcohol-containing fuel. An exhaust emission control apparatus for an internal com...
https://drivepatents.com/patents/989152 · 3 Jul 2013
An exhaust emission control device of an internal combustion engine capable of effectively restoring an NSR catalyst from sulfur poisoning while suppressing reduction of fuel efficiency and worsening of emission, in the internal combustion engine including...
https://drivepatents.com/patents/984769 · 26 Jun 2013
In a diesel engine equipped with a system for automatic regeneration of the particulate filter, the automatic regeneration mode is inhibited in the case where there is recorded a number higher than a pre-set threshold of unfavourable events, i.e., of inter...
https://drivepatents.com/patents/990171 · 5 Jun 2013
A NOx sensor diagnosis device which can diagnose validity of a NOx sensor by considering an environmental condition and can prevent erroneous diagnosis and an SCR system are provided. In a NOx sensor diagnosis device provided in an exhaust pipe 102 of an e...
https://drivepatents.com/patents/991886 · 10 Apr 2013
It is an object of the present invention to improve a fuel consumption and avoid an engine oil dilution compatible, at a time of renewal of an exhaust gas purification device 50. An exhaust gas purification system of the present invention is provided with ...
https://drivepatents.com/patents/985443 · 27 Mar 2013
Provided is an SCR system that can rapidly cancel engine start prohibition after filling a urea aqueous solution as well as preventing improper indication of deficiency of the urea aqueous solution by variation in a solution level in a urea aqueous solutio...