Patent application number | Description | Published |
20090019832 | EXHAUST PURIFICATION SYSTEM FOR INTERNAL COMBUSTION ENGINE AND CONTROL METHOD OF THE EXHAUST PURIFICATION SYSTEM - An exhaust purification system for an internal combustion engine has a hydrogen concentration sensor ( | 01-22-2009 |
20090277160 | EXHAUST GAS CONTROL APPARATUS AND METHOD FOR AN INTERNAL COMBUSTION ENGINE - An exhaust gas control apparatus for an internal combustion engine, including a three-way catalyst, a NO | 11-12-2009 |
20100004847 | INTERNAL COMBUSTION ENGINE CONTROL APPARATUS AND METHOD - An internal combustion engine control apparatus controls an internal combustion engine including: an exhaust passage including branch portions provided for the left and right banks and a common portion in which an exhaust gas purification device is provided; and a fuel supply system that supplies fuel to the respective engine cylinders. In the internal combustion engine, in order to recover the exhaust gas purification device, a bank control is executed in which the air-fuel ratio of the cylinders of the left bank is made rich while the air-fuel ratio of the cylinders of the right bank is made lean. The internal combustion engine is capable of running on alcohol-containing fuel and has an alcohol concentration sensor. The amount of unburned fuel to be supplied to the exhaust gas purification device during the bank control is adjusted based on the alcohol concentration in fuel. | 01-07-2010 |
20100005873 | CATALYST DETERIORATION JUDGMENT DEVICE - A catalyst deterioration judgment device that can accurately perform a catalyst deterioration judgment by considering an oxygen density at downstream of an exhaust purification catalyst. The system reads outputs of an oxygen sensor and an ammonia sensor that are installed in downstream of an NSR catalyst when the catalyst is in an activate condition. When this read oxygen sensor output is equal to or more than a reference value and the ammonia sensor output is equal to or more than a reference value, it is estimated that ammonia oxidizing reaction does not occur under existence of oxygen in the NSR catalyst. In this case, the NSR catalyst is judged to be deteriorated. | 01-14-2010 |
20100111794 | INTERNAL COMBUSTION ENGINE EXHAUST GAS PURIFICATION APPARATUS AND METHOD FOR CONTROLLING SAME - An internal combustion engine exhaust gas purification apparatus purifies exhaust gas using a NOx storage-reduction catalyst unit and a NOx selective reduction catalyst unit. The NOx selective reduction catalyst unit is provided downstream of the NOx storage-reduction catalyst unit in an exhaust gas passage. An urea injecting mechanism, for example an injection valve, injects urea into the exhaust gas passage. An urea injection controller prohibits urea injection from the urea injecting mechanism if at least one of the temperatures of the NOx storage-reduction catalyst unit and the NOx selective reduction catalyst unit is equal to or lower than a reference temperature. As such, production of cyanic acid is minimized, and therefore leaks of cyanic acid from the NOx storage-reduction catalyst unit and/or the NOx selective reduction catalyst unit can be suppressed. | 05-06-2010 |
20100294252 | EXHAUST GAS CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - An exhaust pipe is connected to an intake branch pipe downstream of a throttle valve by an EGR passage. An EGR control valve that controls an EGR gas amount is arranged in the EGR passage. An EGR catalyst is arranged in the EGR passage downstream of the EGR control valve. An ozone supply apparatus is provided which supplies ozone to oxidize and remove particulate matter. An ozone supply end of the ozone supply apparatus is connected to the EGR passage upstream of the EGR catalyst. If an EGR gas supply operation is being performed and an EGR catalyst temperature is within a set temperature range that is set beforehand, an ozone supply operation is performed. If the EGR gas supply operation is not being performed or the EGR catalyst temperature is outside of the set temperature range, the ozone supply operation is prohibited from being performed. | 11-25-2010 |
20110079001 | EXHAUST PURIFYING DEVICE OF INTERNAL COMBUSTION ENGINE - An upstream catalyst and a downstream catalyst are arranged in series and are housed in a common casing disposed in an engine exhaust passage. The upstream catalyst including a NOx storage-reduction catalyst that adsorbs NOx contained in incoming exhaust gas when the air-fuel ratio of the incoming exhaust gas is lean, and releases and reduces the adsorbed NOx when the air-fuel ratio of the incoming exhaust gas becomes rich, and the downstream catalyst includes a three-way catalyst. The upstream catalyst has a higher oxidizing capability than the downstream catalyst, and the downstream catalyst has a higher reducing capability than the upstream catalyst. The upstream catalyst has a multi-layer structure including an upper layer and a lower layer, and is prepared such that the upper layer has a higher oxidizing capability than the lower layer, and the lower layer has a higher reducing capability than the upper layer. | 04-07-2011 |
Patent application number | Description | Published |
20100028658 | Hihgly corrosion-resistant, rust-prevention coating material, highly corrosion-resistant steel, and steel structure - A highly corrosion-resistant, rust-prevention coating material comprising:
| 02-04-2010 |
20100247956 | ZN ALLOY PARTICLES FOR HIGH CORROSION RESISTANCE RUST PROTECTION PAINT, METHOD OF PRODUCTION OF PARTICLES, HIGH CORROSION RESITANCE RUST PROTECTION PAINT CONATINING PARTICLES, HIGH CORROSION RESISTANCE STEEL MATERIAL COATED WITH PAINT, AND STEEL STRUCTURE HAVING STEEL MATERIAL - Zn alloy particles for high corrosion resistance rust prevention paint containing, by mass %, Mg: 0.01 to 30% and having a balance of Zn and unavoidable impurities, having physical fracture facets and/or cracks of a length of 0.01 μm or more or cracks of a depth of 0.01 μm or more, having an average particle size of 0.05 to 200 μm, and having an aspect ratio of maximum size and minimum size (maximum size/minimum size) of an average value of 1 to 1.5. Also, a high corrosion resistance rust prevention paint containing these Zn alloy particles and a high corrosion resistance steel material and steel structure coated with that paint. | 09-30-2010 |
20110217566 | CORROSION-RESISTANT STEEL FOR CHIMNEY/FLUE USE IN NATURAL GAS-FIRED OR LIQUEFIED PETROLEUM GAS-FIRED PLANTS - Corrosion-resistant steel for chimney/flue use in natural gas-fired or liquefied petroleum gas-fired plants, containing C: 0.005% to 0.030%, Si: 0.18% to 0.50%, Mn: 1.50% to less than 3.00, P: 0.030% or less, S: 0.0050% or less, Cr: 4.0% to 9.0%, Al: 0.20% to 1.50%, and N: 0.020% or less and able to prevent advanced pitting or other localized corrosion and the resultant hole formation and rust aerial dispersal is provided. | 09-08-2011 |