Patent application number | Description | Published |
20090000585 | Camshaft Support Structure of an Internal Combustion Engine and Assembly Method Thereof - A lash adjuster support portion is integrally formed with a lower cam carrier. The lower cam carrier is fixed onto a cylinder head into which an intake valve and an exhaust valve have been fitted. After a lash adjuster is set in the lash adjuster support portion, a rocker arm is placed on the intake side and a rocker arm is placed on the exhaust side. Camshafts are then placed on the lower cam carrier such that the rocker arm contacts an intake cam and the rocker arm contacts an exhaust cam. An upper cam carrier is then assembled to the lower cam carrier, thus completing the camshaft support structure. | 01-01-2009 |
20090000591 | Camshaft Support Structure for Internal Combustion Engine - A cylinder head of an internal combustion engine is fitted with rocker arms. Camshafts are disposed so that the rocker arms and cams will be brought into contact with each other. The camshafts are rotatably supported by lower bearings, which supports the camshafts from below, and by upper bearings integrated with a head cover. The head cover is provided with visual observation windows that make it possible to see valve system parts through the head cover. A visual observation window covers for covering the visual observation windows are fixed to the head cover. | 01-01-2009 |
20090013949 | Camshaft Support Structure of an Internal Combustion Engine - A camshaft support structure of an internal combustion engine ( | 01-15-2009 |
20090013958 | Camshaft Support Structure For an Internal Combustion Engine - A lower cam carrier is disposed over a cylinder head and a head cover is disposed thereover. The lower cam carrier has, formed as one therewith, an outer frame superposed with the edge peripheral edge of the cylinder head, and a bridging part provided between opposing sides of the outer frame part. The bridging part has a lower bearing for supporting an intake camshaft and an exhaust camshaft. The head cover has, formed as one therewith, a flange part superposed with the outer frame part and a bearing part opposing the bridging part inside the flange part | 01-15-2009 |
20100101303 | GAS CONCENTRATION DETECTION APPARATUS - It is an object of the present invention to provide a gas concentration detection apparatus that is capable of forming an accurate activity judgment when a gas concentration detection cell begins to detect gas concentration with high accuracy. When warm-up begins at time t | 04-29-2010 |
20110016949 | GAS CONCENTRATION DETECTION APPARATUS - The present invention relates to a gas concentration detection apparatus for detecting the concentration of a specific gas component in an exhaust gas emitted from an engine, and forms a deterioration judgment about the gas concentration detection apparatus accurately and immediately. After excess oxygen is discharged by an oxygen pump cell | 01-27-2011 |
20130019651 | ABNORMALITY DETECTION APPARATUS FOR FUEL PROPERTY DETECTION APPARATUS - An object of the present invention is to accurately diagnose an abnormality of a fuel property detection apparatus that detects a fuel property based on a capacitance between electrodes. The abnormality detection apparatus for a fuel property detection apparatus of the present invention detects an abnormality of a fuel property detection apparatus that detects a fuel property based on a measurement value of a capacitance between a pair of electrodes installed on a fuel supply channel of an internal combustion engine that can use a fuel that includes a predetermined fuel component that has a characteristic such that a permittivity thereof changes according to a frequency of an electric field. The abnormality detection apparatus for a fuel property detection apparatus includes frequency switching means that switches a frequency of an alternating voltage applied between both electrodes to a plurality of frequencies, measuring means that measures a capacitance at each of the plurality of frequencies, storing means that stores frequency characteristics information that is information relating to a relationship between a fuel property and frequency characteristics of capacitances when the fuel property detection apparatus is normal, and diagnosing means that diagnoses an abnormality of the fuel property detection apparatus based on a measurement result of the measuring means and the frequency characteristics information. | 01-24-2013 |
20130062200 | ABNORMALITY DIAGNOSTIC APPARATUS FOR GAS SENSOR - An abnormality diagnostic apparatus for a gas sensor includes a NOx sensor includes a main pump cell, an auxiliary pump cell, and a detection cell. The apparatus diagnoses at least one of the detection cell, the main pump cell, and the auxiliary pump cell for an abnormality, based on at least one of a rising characteristic of a NOx output of the detection cell immediately after a start of detection of the NOx output, its peak value, and its subsequent falling characteristic. An abnormality of the detection cell is determined if a speed with which the NOx output rises is small; an abnormality of at least one of the main pump cell and the auxiliary pump cell is determined if a speed with which the NOx output falls is small; and an abnormality of the detection cell is determined if the peak value of the NOx output is small. | 03-14-2013 |
20130291521 | CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - In a control device for an internal combustion engine including an air-fuel ratio sensor that includes a catalyst layer that covers an exhaust gas-side electrode, an oxygen storage capacity of the catalyst layer is acquired based on a sensor output of the air-fuel ratio sensor. The sensor output is corrected if the oxygen storage capacity is higher than a predetermined value and the sensor output is in a predetermined range in the vicinity of the theoretical air-fuel ratio. Preferably, the oxygen storage capacity is calculated by integrating the product of a deviation amount ΔA/F of the sensor output with respect to the theoretical air-fuel ratio and a dwell time thereof. A correction period in which a correction operation is performed is set based on the oxygen storage capacity. | 11-07-2013 |
20140005882 | SENSOR CHARACTERISTIC CORRECTION DEVICE | 01-02-2014 |
20140075924 | CORRECTION DEVICE FOR AIR/FUEL RATIO SENSOR - A correction device for an air/fuel ratio sensor in the present invention, the sensor issuing an output according to an air/fuel ratio and installed on the downstream from catalyst of the exhaust passage, has air/fuel ratio control means for controlling an air/fuel ratio of an exhaust gas on the upstream side from a catalyst to switch between a rich air/fuel ratio which is richer and a lean air/fuel ratio which is leaner than a stoichiometric air/fuel ratio. Moreover, correction means for correcting an output of the sensor in accordance with a difference between the output of the sensor during a predetermined period during air/fuel ratio control by the air/fuel ratio control means, and a reference output corresponding to a stoichiometric air/fuel ratio, is provided. | 03-20-2014 |
20140250993 | CATALYST-DEGRADATION DETECTION DEVICE - An oxygen amount (an oxygen storage amount OSA) stored by metal cerium during a storage cycle is obtained based on an output value of an A/F sensor in a time period immediately before an exhaust air-fuel ratio (a downstream side A/F) detected by the A/F sensor shifts to a lean region, and degradation relating to OSC of the three-way catalyst is detected. In the storage cycle, a target air-fuel ratio is set so that an air-fuel ratio of exhaust emission flowing into an S/C changes from rich to lean. Therefore, the downstream side A/F shifts from stoichiometry to the lean region at a time after reaching stoichiometry. When the three-way catalyst degrades, the downstream side A/F shifts to the lean region from stoichiometry at a time. Therefore, the calculated oxygen storage amount OSA becomes extremely smaller as compared with that at a normal time. | 09-11-2014 |