Patent application number | Description | Published |
20090240422 | INTERNAL EGR CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An internal EGR control device for an internal combustion engine, which is capable of properly controlling an internal EGR amount, while causing conditions of burned gases to be reflected thereon in controlling the internal EGR by changing valve-closing timing of an exhaust valve. An internal EGR control device sets a target internal EGR amount EGRINCMD as a target of the internal EGR amount according to detected operating conditions of an internal combustion engine, and a target internal EGR amount EGRINC is determined by correcting the target internal EGR amount based on a gas state equation, using obtained temperature and pressure of exhaust gases, and a calculated gas constant R. Then, according to the corrected target internal EGR amount EGRINC, the valve-closing timing of an exhaust valve is calculated, and a variable valve mechanism is controlled based on the calculated valve-closing timing of the exhaust valve. | 09-24-2009 |
20100242930 | INTERNAL EGR CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - There is provided an internal EGR control system for an internal combustion engine, which is capable of ensuring an excellent combustion state by properly controlling an internal EGR amount. The internal EGR control system is comprised of a variable valve operating mechanism | 09-30-2010 |
20100269801 | CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - To provide a control system for an internal combustion engine, which is capable of providing a stable intake air amount through reduction of pumping loss and blow-back of combustion gases by appropriately controlling the valve-opening timing of the intake valves, and thereby being capable of securing excellent drivability. In the control system | 10-28-2010 |
20100274463 | IGNITION TIMING CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - To provide an ignition timing control system for an internal combustion engine, which is capable of ensuring stable combustion without causing a misfire or knocking, by properly setting ignition timing in the compression stroke injection mode, thereby making it possible to improve drivability. The ignition timing control system for the engine | 10-28-2010 |
Patent application number | Description | Published |
20090133466 | ACCELERATION MEASURING DEVICE - A reference point defined on a two dimensional or three dimensional orthogonal coordinate space and scale reference of respective axes are estimated based on a distribution on the three dimensional orthogonal coordinate space at the time when respective axial components of an acceleration data group comprised of plural acceleration data including multi-axial components and a importance group pertaining to the acceleration data group, and the respective acceleration data are corrected based on the estimated reference point and scale reference of the respective axes. | 05-28-2009 |
20090143972 | Traveling Direction Measuring Apparatus and Traveling Direction Measuring Method - The present invention relates to a traveling direction measuring apparatus usable as a pedestrian navigation system in locations where it is difficult to obtain high positioning accuracy such as inside buildings or around multistory buildings where a GPS cannot be used. An acceleration detecting section ( | 06-04-2009 |
20090271142 | PHYSICAL QUANTITY MEASURING INSTRUMENT AND SIGNAL PROCESSING METHOD THEREOF - The present invention relates to a physical quantity measuring instrument and signal processing method thereof capable of reducing noise components and improving reliability without increasing size or cost of the circuit. A physical quantity detecting unit ( | 10-29-2009 |
20100161272 | PHYSICAL AMOUNT MEASURING DEVICE AND PHYSICAL AMOUNT MEASURING METHOD - Even if a measurement data group is not a measurement data group that is obtained in a space where the magnitude of a vector physical quantity to be measured is uniform, an offset with high reliability is estimated. The reliability of the estimated offset is further improved. A vector physical quantity comprised of a plurality of components is repeatedly detected and vector physical quantity data group is obtained, and a difference vector group is calculated from the obtained vector physical quantity data group. A reference point included in the vector physical quantity data group is estimated based on a predetermined evaluation formula using the calculated difference vector group. Whether the calculated difference vector group is suitable for the estimation of the reference point is determined. Only a predetermined difference vector group is output for the estimation of the reference point based on the determination result. | 06-24-2010 |
20100191501 | Traveling direction measuring apparatus and traveling direction measuring method - The present invention relates to a traveling direction measuring apparatus usable as a pedestrian navigation system in locations where it is difficult to obtain high positioning accuracy such as inside buildings or around multistory buildings where a GPS cannot be used. An acceleration detecting section (1) detects 3-axes acceleration of the traveling direction measuring apparatus, which varies with the walking of the pedestrian. An acceleration data acquiring section (2) obtains 3-axes acceleration data repeatedly by the number of prescribed times or more, said 3-axes acceleration data varies with the walking of the pedestrian. A first gravity acceleration calculating section (3) calculates, when the pedestrian is walking with holding the traveling direction measuring apparatus in a generally fixed attitude, gravity acceleration by averaging acceleration data sets during several steps obtained by the acceleration data acquiring section (2). A first moving direction estimating section (4) estimates the moving direction of the pedestrian from frequency components corresponding to the duration of one step of the acceleration data sets projected on a plane perpendicular to the gravity acceleration calculated by the first gravity acceleration calculating section (3). | 07-29-2010 |
20130103364 | SHIP DESIGN SUPPORTING SYSTEM - A ship design supporting system includes a storage section for storing general arrangement model data describing a general arrangement model which contains a hull structure model as a 3-dimensional model of a hull structure and an equipment apparatus model as a 3-dimensional model of equipment apparatus; and a model producing and changing section for changing the general arrangement model based on a final line plan data which shows a shape of a ship to be built. Because the general arrangement design and the ship shape design can be carried forward in parallel, a time from start of the design to completion can be reduced. | 04-25-2013 |