About 199 results
https://drivepatents.com/patents/939423 · 10 Aug 2016
When a catalyst temperature T of a catalyst device 31a is at or below a lower limit catalyst temperature Tc, the air-fuel ratio richness control is prohibited. When a first timing ti1 where an estimated value V of a NOx storage amount has reached an enrich...
https://drivepatents.com/patents/942183 · 8 Jun 2016
The present invention pertains to a sensor output value estimation device that effectively estimates sensor output values reflecting a response delay of a temperature sensor. The sensor output value estimation device includes an estimated gas temperature c...
https://drivepatents.com/patents/942145 · 8 Jun 2016
The invention relates to a diagnosis device that effectively diagnoses a cooler without providing a temperature sensor upstream of the cooler. The diagnosis device diagnoses the cooler (16, 22) adapted to cool a fluid flowing through intake and exhaust sys...
https://drivepatents.com/patents/942119 · 8 Jun 2016
The invention relates to an exhaust system state detection device that has a simple configuration and can effectively detect an exhaust gas temperature. The exhaust system state detection device includes an intake air oxygen concentration sensor (32) that ...
https://drivepatents.com/patents/943777 · 4 May 2016
An EGR control unit (34S), in accelerating an engine, closes an EGR valve (19) to stop EGR, in a case where an increased amount (Q) of a fuel injection amount (Q) detected by a fuel injection detection unit (31S) is larger than a preset first threshold val...
https://drivepatents.com/patents/943759 · 4 May 2016
The invention pertains to a control device for a common rail fuel injection device that avoids simultaneous driving of a pressurized fuel feed pump and a pressure reducing valve and enables proper regulations to a common rail pressure. The common rail fuel...
https://drivepatents.com/patents/944433 · 20 Apr 2016
Provided is a mixed fuel supply system configured by providing a DME tank (a liquefied gas fuel storage tank) 14 which stores DME and a DME supply path (a liquefied gas fuel supply path) 15 which supplies the DME in addition to a configuration of a light o...
https://drivepatents.com/patents/944835 · 13 Apr 2016
The invention relates to an exhaust gas purification device that effectively detects an amount of ash collected and accumulated in a DPF. The exhaust gas purification device includes the DPF (16) for collecting PM contained in an exhaust gas, forced regene...
https://drivepatents.com/patents/953229 · 24 Feb 2016
Provided is an exhaust injection control method for an exhaust gas aftertreatment device that can perform optimal exhaust pipe injection in accordance with a catalyst temperature and a degree of catalyst deterioration when exhaust pipe injection is perform...
https://drivepatents.com/patents/946378 · 10 Feb 2016
Provided is an exhaust gas purification system which can suppress a decrease in engine torque during a desulfurization process applied to a NOx storage reduction catalyst. The exhaust gas purification system includes a NOx storage reduction catalyst (3) pr...