Patent application number | Description | Published |
20080237519 | Terminal structure of coil system - A terminal structure of a coil system includes a coil and a terminal having a fusing portion. The coil includes a rectangular conductive wire covered with a dielectric film, and a bobbin around which the conductive wire is wound. The conductive wire includes a coil lead wire taken out from the coil. The fusing portion is connected electrically by fusing to an end portion of the lead wire, and includes a first planar portion contacting a surface of the end portion. The fusing portion is folded from the first planar portion in a thickness direction of the first planar portion to form a folded piece having a second planar portion and opposed to the first planar portion. The end portion is placed between the first and second planar portions such that a predetermined crushing allowance of the end portion is crushed entirely in a width direction of the end portion. | 10-02-2008 |
20080237520 | SOLENOID VALVE AND FUEL INJECTION VALVE HAVING THE SAME - A solenoid valve includes a movable core, a magnetic opposed portion opposed to the movable core, a nonmagnetic cylindrical portion, a first magnetic cylindrical portion axially close to the movable core, and a second magnetic cylindrical portion located radially outside of the magnetic opposed portion. The nonmagnetic cylindrical portion surrounds radially outside of a gap between the magnetic opposed portion and the movable core. A coil is provided radially outside of the nonmagnetic cylindrical portion. A thickness t of the nonmagnetic cylindrical portion, a cross-sectional area S | 10-02-2008 |
20090241904 | FUEL SUPPLY PIPE DEVICE AND FUEL INJECTION DEVICE HAVING THE SAME - An internal combustion engine has multiple cylinders each provided with multiple injectors. A fuel supply pipe device includes multiple fuel passages, which receive fuel through multiple fuel paths and supply the fuel correspondingly to the multiple injectors. The multiple fuel passages are separated respectively from the multiple fuel passages. | 10-01-2009 |
20090248275 | FUEL SUPPLY SYSTEM AND METHOD FOR SUPPLYING FUEL - A fuel supply system supplies composite fuel containing alcohol and gasoline to multiple cylinders of an internal combustion engine. The composite fuel includes main-fuel and sub-fuel. The sub-fuel is lower than main-fuel in concentration of alcohol. Each of multiple first fuel injection valves is provided to each of the cylinders for injecting fuel. Each of multiple second fuel injection valves is provided to each of the cylinders for injecting fuel. A fuel inlet portion supplies at least sub-fuel to each of the first fuel injection valves and each of the second fuel injection valves. A selector control unit selects one of main-fuel and sub-fuel supplied through the fuel inlet portion to each of the first fuel injection valves. | 10-01-2009 |
Patent application number | Description | Published |
20090063020 | Fuel injection system with injection characteristic learning function - A fuel injection system designed to determine a correction value for correcting the quantity of fuel sprayed from a fuel injector into an internal combustion engine. The fuel injection system instructs the fuel injector to inject the fuel into the engine a plurality of times cyclically to learn an injection characteristic unique to the fuel injector and changes an injection duration for which the fuel is to be sprayed in each of injection events to disperse the injection durations evenly around a target injection quantity, thereby enabling the correction value to be determined in a decreased number of injections of fuel for a decreased amount of time. | 03-05-2009 |
20090063022 | FUEL INJECTION SYSTEM WITH LEARNING CONTROL TO COMPENSATE FOR ACTUAL-TO-TARGET INJECTION QUANTITY - A fuel injection system designed to execute a learning operation to spray fuel through fuel injectors at each of given pressures of the fuel to determine the quantity of fuel sprayed actually from each of the fuel injectors (i.e., an actual injection quantity) into an internal combustion engine. The system calculates a deviation of each of the actual injection quantities from a target quantity to determine an injection correction value required to eliminate such a deviation. The system determines whether each of the injection correction values has an error or not and analyzes the mode in which the errors appear at the injection correction values to specify types of malfunction occurring in the system. The system relearns ones of the injection correction values as determined to have the errors. | 03-05-2009 |
20090076707 | FUEL INJECTION SYSTEM WITH INJECTION QUANTITY LEARNING FUNCTION - A fuel injection system for an internal combustion engine which is designed to determine an instantaneous engine speed in a cycle of, for example, 30° CA of the engine to learn an actual injection quantity that is the quantity of fuel actually sprayed from a fuel injector. The system filters the instantaneous engine speed using a band-pass filter to extract a cyclic component which varies in synchronism with an engine operating cycle to produce an engine speed change which has arisen from the spraying of fuel into the engine from which unwanted noise components are removed and uses it to determine the actual injection quantity. | 03-19-2009 |
20090082943 | ENGINE CONTROL SYSTEM DESIGNED TO MANAGE SCHEDULE OF ENGINE CONTROL TASKS - An engine control system for managing a schedule of execution of engine control tasks is provided. The system works to schedule execution of the engine control tasks upon receipt of requests to initiate the engine control tasks. The system determines a sequence of execution of the engine control tasks and allocates execution times for which the engine control tasks are to be executed so as to provide chances of execution of the engine control task as evenly as possible. The system may determine required time-sharing ratios of the engine control tasks based on statuses of execution of the engine control tasks. | 03-26-2009 |
20090082946 | FUEL INJECTION SYSTEM LEARNING AVERAGE OF INJECTION QUANTITIES FOR CORRECTING INJECTION CHARACTERISTIC OF FUEL INJECTOR - A fuel injection system designed to execute a learning operation to spray fuel through a fuel injector in a cycle to calculate an average of actual injection quantities for correcting an injection duration so as to minimize a deviation of the average from a target quantity. The system samples the actual injection quantities for a given period of time made up of a first and a second time section. In each of the first and second time sections, the system decides whether each of the actual injection quantities is suitable for use in calculating the average or not. When a desired number of the actual injection quantities decided to be suitable for the calculation of the average has been derived in the first time section, the system proceeds to the second time section to calculate the average. This enhances the accuracy in determining the quantity of fuel actually sprayed from the fuel injector. | 03-26-2009 |
20120215422 | FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINE - A fuel injection system for an internal combustion engine is provided which calculates the quantity of fuel required to bring the pressure in a fuel accumulator into agreement with a target pressure and then control an operation of a high-pressure pump based on the required quantity. Even in the absence of a change in pressure in the accumulator, the system controls the high-pressure pump based on the required quantity. Specifically, the system calculates a feedback fuel quantity required to compensate for a difference between the required quantity and a quantity of the fuel actually supplied to the accumulator, in other words, leans such a quantity difference to correct the required quantity, thus resulting in an enhanced response of the system to control the high-pressure pump to a change in pressure in the accumulator. | 08-23-2012 |