Patent application number | Description | Published |
20090118981 | FUEL INJECTOR WITH FUEL PRESSURE SENSOR - A fuel injector for an internal combustion engine is provided. The fuel injector is equipped with a fuel pressure sensor which is installed in a metallic injector body. The fuel injector also includes an amplifier working to amplify an output of the fuel pressure sensor and a thermal insulating member disposed between the metallic injector body and the amplifier to shield the amplifier thermally, thereby ensuring the accuracy in measuring the pressure of fuel within the fuel injector. | 05-07-2009 |
20090118982 | FUEL INJECTOR WITH ELECTRIC SHIELD - A fuel injector for an internal combustion engine is provided. The fuel injector is equipped with a fuel pressure sensor, a sensor circuit such as an amplifier, and a valve actuator such as a piezoelectric actuator. The fuel injector also includes a conductive shield which is disposed between the sensor circuit and actuator drive terminals to supply electric power to the actuator and works to shield the sensor circuit from electric noises arising from the drive terminals, thereby minimizing the addition of the noises to an output of the fuel pressure sensor, as being processed in the sensor circuit, and ensuring the accuracy in determining the pressure of fuel based on the output of the fuel pressure sensor. | 05-07-2009 |
20090118983 | FUEL INJECTOR DESIGNED TO MINIMIZE MECHANICAL STRESS ON FUEL PRESSURE SENSOR INSTALLED THEREIN - A fuel injector for an internal combustion engine is provided. The fuel injector is to be installed in a cylinder head of the engine and has a fuel pressure sensor working to measure the pressure of fuel within a injector body. The fuel pressure sensor is installed in a portion of the injector body which is to be located away from the cylinder head of the engine across a portion of the injector body on which a mechanical pressure is exerted by an external member such as a fuel supply pipe or a fuel drain pipe, thereby keeping the fuel pressure sensor free from internal stress, as arising from the mechanical pressure exerted on the injector body, to ensure the accuracy in measuring the pressure of the fuel. | 05-07-2009 |
20090241650 | FUEL PRESSURE SENSOR/SENSOR MOUNT ASSEMBLY, FUEL INJECTION APPARATUS, AND PRESSURE SENSING APPARATUS - A fuel pressure sensor/sensor mount assembly in which a fuel pressure sensor is so mounted as to exposed to a high-pressure fuel path through which fuel is supplied to a fuel injector, a fuel injection apparatus equipped with a built-in fuel pressure sensor, and a pressure sensing apparatus working to measure the pressure of fuel in a fuel injector are provided. The fuel pressure sensor/sensor mount assembly is disposed between the high-pressure fuel path and the fuel injector, thus permitting the size of the fuel injector to be minimized without sacrificing the accuracy in measuring the pressure of the fuel. The fuel injection apparatus and the a pressure sensing apparatus are designed to ensure desired accuracy in measuring the pressure of the fuel. | 10-01-2009 |
20090248276 | FUEL INJECTOR WITH BUILT-IN FUEL PRESSURE SENSOR - A fuel injector for an internal combustion engine is provided which has a fuel supply path and a nozzle chamber. The fuel supply path extends a spray hole. The nozzle chamber is defined in the fuel supply path. A nozzle is disposed within the nozzle chamber to establish or block a fluid communication between the fuel supply path and the spray hole. A fuel pressure sensor is installed in the fuel injector so as to be exposed to the fuel in the nozzle chamber. Specifically, the fuel pressure sensor is located closer to the spray hole than a prior art structure in which the fuel pressure sensor is installed in a fuel supply pipe, thus resulting in increased accuracy in measuring a change in pressure of the fuel arising from the spraying of the fuel from the spray hole. | 10-01-2009 |
20100263633 | FUEL INJECTION VALVE AND FUEL INJECTION APPARATUS - The injector body | 10-21-2010 |
20100294242 | FUEL INJECTION VALVE AND FUEL INJECTION DEVICE - It is equipped with an injector body | 11-25-2010 |
20100313850 | FUEL INJECTION VALVE AND FUEL INJECTION DEVICE - It is equipped with an injector body | 12-16-2010 |
20110006130 | FUEL PRESSURE MEASURING DEVICE, FUEL PRESSURE MEASURING SYSTEM, AND FUEL INJECTION DEVICE - It is used with a fuel injection system for an internal combustion engine which supplies fuel to an injector (fuel injection valve) from a common rail (accumulator) through a high-pressure pipe to spray the fuel from a spray hole formed in the injector. A thin-walled portion | 01-13-2011 |