| Patent application number | Description | Published |
|---|
| 20090107462 | FUEL SYSTEM HAVING A ONE-PIECE HOLLOW TUBE CONNECTION - A fuel system for an engine including a cylinder head having a first bore and a second bore intersecting the first bore is disclosed. The fuel system includes a common rail and a fuel injector coupled to the cylinder head and at least partially received within the first bore. The fuel system also includes a one-piece hollow tube, extending linearly from the common rail to the fuel injector through the second bore. The one-piece hollow tube is configured to communicate high pressure fuel from the common rail to the fuel injector. | 04-30-2009 |
| 20090114189 | High pressure pump and method of reducing fluid mixing within same - Mixing a pumped fluid with a lubrication fluid within a pump can undermine the lubricity of the lubrication fluid. In order to reduce mixing of fluids within a pump of the present disclosure, a pump is provided that comprises a housing, a piston, a first annulus, and a second annulus. The housing includes an inlet for the pumped fluid, an inlet for the lubrication fluid provided at a first pressure, and a piston bore fluidly coupled to the inlet for the pumped fluid. The piston is moveable within the piston bore. The first annulus is fluidly coupled to the inlet for the lubrication fluid. The second annulus is configured to be fluidly coupled to a drain circuit provided at a second pressure less than the first pressure. The first annulus and the second annulus are located along the length of the piston bore. | 05-07-2009 |
| 20090134240 | Method of making piezoelectrically actuated device - A method of making a piezoelectrically actuated device includes the steps of compressing a piezoelectric element toward a compression state which is based on a target preload for the piezoelectric element, and elastically deforming a casing for the piezoelectric element toward a spring state which is also based on the target preload for the piezoelectric element. The method further includes plastically deforming the casing about the subassembly when the piezoelectric element and the casing are at their respective compression state and spring state to set a preload of the piezoelectric element at the target preload | 05-28-2009 |
| 20090159053 | Pumping element for a fluid pump and method - A pumping element for pressurizing a fluid within a fluid pump includes a plunger reciprocally disposed within a bore defined in a barrel. The plunger and barrel at least partially define a pressurization chamber into which fluid is pressurized. A flow path is defined between the plunger and the bore, the flow path permitting fluid to pass from the pressurization chamber during pressurization of fluid disposed therein. A collection chamber is formed between the plunger and the bore, the collection chamber being disposed adjacent to the bore and being part of a cooling circuit for the pumping element. A plurality of weep openings is defined in the barrel and is fluidly connected to the collection chamber. A reduced diameter portion of the barrel forms an annular reservoir that receives fluid from the weep openings. | 06-25-2009 |
| 20100276520 | INDIRECT LASER INDUCED RESIDUAL STRESS IN A FUEL SYSTEM COMPONENT AND FUEL SYSTEM USING SAME - A metallic fuel system component includes an internal surface and an external surface. The metallic fuel system component is made by inducing compressive residual stress in only a portion of the internal surface of the metallic fuel system component by transmitting a laser shock wave through the metallic fuel system component from the external surface to the internal surface. | 11-04-2010 |
| 20110030343 | SCR REDUCTANT DEPOSIT REMOVAL - An engine exhaust aftertreatment system including a selective catalytic reduction (SCR) system. The SCR system includes a reductant injection system configured to introduce a reductant into a exhaust stream of a engine, a SCR catalysts configured to reduce NOx in the presence of a reductant, and a SCR monitoring system configured to determine temperatures associated with the SCR system. The SCR system also includes a heat source configured to raise the temperature of the exhaust stream and a controller configured to operate the heat source to reach exhaust stream temperatures in the SCR system of at least about 400 degrees Celsius based on the temperature associated with the SCR system. | 02-10-2011 |
| 20110064588 | INLET THROTTLE CONTROLLED LIQUID PUMP WITH CAVITATION DAMAGE AVOIDANCE FEATURE - A liquid pump includes an electronically controlled throttle inlet valve to control pump output. With each reciprocation cycle, a plunger displaces a fixed volume of fluid. When less than this fixed volume is desired as the output from the pump, the electronically controlled throttle inlet valve throttles flow past a passive inlet check valve to reduce output. As a consequence, cavitation bubbles are generated during the intake stroke. Cavitation damage to surfaces that define the inlet port passage are avoided by a specifically shaped and sized cavitation flow adjuster extending from the valve member of the passive inlet check valve. By positioning the cavitation flow adjuster in the inlet port passage, a flow pattern is formed in a way to encourage cavitation bubble collapse away from surfaces that could result in unacceptable cavitation damage to the pump. | 03-17-2011 |
| 20110146600 | METHOD OF COOLING A HIGH PRESSURE PLUNGER - A pumping element for pressurizing a fluid within a fluid pump includes a plunger reciprocally disposed within a bore defined in a pump housing. The plunger and housing at least partially define a pressurization chamber into which fluid is pressurized. A flow path is defined between the plunger and the bore, the flow path permitting fluid to pass from the pressurization chamber during pressurization of fluid disposed therein. A weep annulus is formed between the plunger and the bore, the weep annulus being disposed adjacent to the bore and being part of a cooling circuit for the pumping element. The housing further defines cooling and drain passages which are in fluid communication with one another via the weep annulus. The plunger an bore are convectively cooled when cooling fluid is supplied to the weep annulus via the cooling passage and drained away via the drain passage. | 06-23-2011 |
