| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123459000 | Bleed off valve | 13 |
| 20080210200 | Method For Controlling a Fuel Delivery Device on an Internal Combustion Engine - An internal combustion engine has a fuel delivering device with a high-pressure pump which conveys fuel into a fuel reservoir, and a volume flow control valve that is assigned to the high-pressure pump. A control difference (FUP_DIF) is determined from a difference between a predefined fuel pressure (FUP_SP) and a detected fuel pressure (FUP_AV). The control difference (FUP_DIF) is fed to a controller that encompasses at least one integral portion (I_CTRL). A corrective value (COR) for an error value of a fuel flow rate is determined in accordance with the integral portion (I_CTRL) of the controller if a sum of the integral portion (I_CTRL) exceeds a given threshold value during a predefined mode of operation of the internal combustion engine. In addition, an actuating signal (PWM) for the volume flow control valve is generated according to a controller value (FUEL_MASS_FB_CTRL) and the corrective value (COR). | 09-04-2008 |
| 20090255512 | COMPACT RELIEF VALVE HAVING DAMPING FUNCTIONALITY - A relief valve is provided for use with a fuel system. The relief valve may have a housing forming an inlet, an outlet, and a central bore fluidly connecting the inlet to the outlet. The relief valve may also have a valve element disposed within the central bore of the housing and being configured to move between a flow-passing position and a flow-blocking position. The valve element may have a passageway continuously communicating the inlet of the housing with the outlet of the housing. The relief valve may also have a resilient member situated to bias the valve element toward the flow-blocking position. | 10-15-2009 |
| 20100043755 | FUEL SUPPLY SYSTEMS - A fuel supply system includes a fuel pump for supplying fuel in a fuel tank to an engine, a pressure regulator and a three-way valve disposed in a valve chamber. The pressure regulator includes a pressure regulating chamber and a control pressure chamber and adjusts a fuel pressure in the pressure regulating chamber depending on a fuel pressure in the control pressure chamber. A control pressure passage for flowing the fuel to the control pressure chamber and the valve chamber is formed in a unit case. | 02-25-2010 |
| 20100236528 | FUEL PRESSURE CONTROL STRATEGY AT ENGINE SHUTDOWN - A fuel system control method may include determining when an engine transitions from an engine on condition to an engine off condition. The method further includes determining a first fuel pressure in a fuel system of the engine a predetermined time after the determined engine off condition. A fuel injector of the fuel system may be actuated during the engine off condition when the first determined fuel pressure is above a first predetermined pressure limit to bleed fuel from the fuel system and reduce pressure within the fuel system. | 09-23-2010 |
| 20100269792 | PRESSURE REGULATING VALVE FOR REGULATING THE PRESSURE IN A HIGH-PRESSURE RESERVOIR - The invention relates to a machine tool having working field illumination disposed in a housing, having an illumination mechanism and a transparent element which allows the light from the illumination mechanism to be led out toward the working field. A light beam can be deflected between the illumination mechanism and the transparent element. According to the invention, the transparent element forms a region of the housing. | 10-28-2010 |
| 20110011371 | PUMP UNIT FOR A FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A pump unit for a fuel injection system of an internal combustion engine is arranged along a fuel feed circuit and has a pre-feed pump and a high-pressure pump which has a pump body and a flange joined to the pump body. The feed circuit is provided with a feed branch and a delivery branch of the pre-feed pump which are formed, at least partly, in the flange of the high-pressure pump. | 01-20-2011 |
| 20110146625 | FUEL PRESSURE REGULATION SYSTEM AND AN IMPROVED FUEL PRESSURE REGULATOR FOR USE THEREIN - A fuel pressure regulation system for a compression ignition diesel engine. The system comprises a fuel supply line connected to an inlet of a transfer pump and a transfer pressure fuel line connected between the transfer pump outlet and the high pressure fuel pump inlet. A fuel filter is positioned in the transfer pressure fuel line and a fuel spill line fluidly connects a fuel pressure regulator to the transfer pressure fuel line at a point between the transfer pump outlet and the fuel filter. A fuel return line is connected between the fuel pressure regulator and the fuel supply line and a control fuel line is connected between the fuel pressure regulator and the transfer pressure fuel line. The fuel pressure regulator comprises a bore within which is located a valve member moveable from a non-regulating position of the fuel pressure regulator to a regulating position of the fuel pressure regulator. In use, any fuel entering the bore through a control fuel line connection acts upon a valve member thrust surface which results in a force acting to open the fuel pressure regulator. Any fuel entering the bore through the fuel spill line connection enters a region between the first end and the second end of the bore. There is provided a leak passageway connected from a point between the first and second ends and a fuel return line connection. In normal operating use, a fuel flow path from the fuel spill line connection to the fuel return line connection is kept open when the fuel pressure regulator is in the non-regulating position. | 06-23-2011 |
| 20110209687 | HIGH-PRESSURE FUEL PUMP FOR AN INTERNAL COMBUSTION ENGINE - The invention relates to a high-pressure fuel pump for an internal combustion engine with direct injection, comprising a pump housing, a low-pressure region on the intake side, and a high-pressure region on the output side. The high-pressure fuel pump comprises a purely mechanical pressure regulating device for regulating a constant pressure in the high-pressure region. | 09-01-2011 |
| 20120118269 | CONTROLLED NOZZLE INJECTION METHOD AND APPARATUS - A nozzle injection apparatus for use in internal combustion engines includes a fuel pump for intermittently pressurizing fuel, an injection conduit in fluid communication with the fuel pump, the injection conduit permitting the pressurized fuel to be communicated to a fuel injection nozzle a control valve in fluid communication with the nozzle, wherein the control valve dynamically and selectively controls a pressure of said pressurized fuel within the injection conduit. | 05-17-2012 |
| 20120298075 | PRESSURE REGULATOR - A pressure regulator is connected to a fuel pipe to which fuel is supplied by a feed pump. There is formed a fuel channel in the pressure regulator for returning fuel from within the fuel pipe to the fuel tank. In the pressure regulator, there is also formed a stopper which can come into contact with a valve body when the valve body is displaced as a result of an increase in fuel pressure within the fuel pipe. The stopper reduces the fuel flow area of the fuel channel when the valve body is displaced as a result of the increase in the fuel pressure within the fuel pipe. Thus, the fuel flow area of the fuel channel is reduced as mentioned above when the fuel pressure within the fuel pipe is high. This makes the fuel within the fuel pipe less likely to be released through the aforementioned fuel channel. For this reason, it is possible to correspondingly increase the fuel pressure within the fuel pipe in an efficient manner when an attempt is made to increase the fuel delivery rate of the feed pump by increasing operating rate of the feed pump under conditions where the fuel pressure within the fuel pipe is high. | 11-29-2012 |
| 20130306031 | Pressure Control Valve Arrangement for a Fuel Line - The present invention concerns a pressure control valve system for a fuel line with a pressure line with a pressure control valve for maintaining a fuel pressure in the fuel line and a filling line for filling the fuel line with fuel, wherein an inlet of the pressure line is connected to an outlet of the filling line using fluid technology. | 11-21-2013 |
| 20140174404 | FUEL SYSTEM - A fuel system for a dual fuel power source includes a first fuel circuit fluidly connected to the power source, a second fuel circuit separate from the first fuel circuit and fluidly connected to the power source, and a pressure regulator fluidly connected to the first fuel circuit. The pressure regulator is configured to vent a first fuel from the first fuel circuit to an aftertreatment system fluidly connected to the power source in response to a pressure difference between the first and second fuel circuits being less than or equal to a pressure difference threshold. | 06-26-2014 |
| 20160138514 | FUEL INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - In a fuel injection system a high-pressure fuel pump is arranged to deliver fuel into the fuel rail, a first valve is disposed at the inlet of the high-pressure fuel pump, and a second valve is disposed in a return line that fluidly connects the fuel rail to a fuel tank. An electronic control unit is configured to monitor a value of a parameter indicative of a fuel quantity injected into the engine, monitor a value of an engine speed, and operate the first valve to allow a first fuel flow to be delivered from the high-pressure fuel pump into the fuel rail and contemporaneously operate the second valve to discharge a second fuel flow from the fuel rail, if the monitored value of the parameter indicates that no fuel is injected into the engine and the monitored value of the engine speed exceeds a predetermined threshold value thereof. | 05-19-2016 |
