| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Fuel injector for auto-ignition internal combustion engines | US09355775 | 1999-09-13 | US06257506B1 | 2001-07-10 | Karl Hofmann; Friedrich Boecking |
| A fuel injection nozzle for self-igniting internal combustion engines, having a nozzle body, in which a conical seat face from which injection ports originate is formed at the bottom of a blind bore. A valve needle which is guided displaceably with a guide portion in the inlet region of the blind bore counter to a closing force and counter to the fuel flow direction and on the end of a valve shaft adjoining the guide portion has a closing cone cooperating with the seat face. The valve shaft circumferentially defines an annular chamber for fuel delivery, and is characterized in that in a transitional region between the valve shaft and the closing cone, a throttle device of variable throttle cross section is disposed, by which the injection cross section can be varied as a function of the axial displacement of the valve needle. | ||||||
| 102 | Common rail injector | US09561909 | 2000-05-01 | US06244250B1 | 2001-06-12 | Jaroslaw Hlousek |
| A common rail injector having an injector housing that can be made to communicate via a high-pressure connection with a high-pressure reservoir. A nozzle needle is axially displaceable against a nozzle needle seat in order to adjust the injection onset and the injection quantity in a common rail injection system of an internal combustion engine as a function of the position of a magnet-controlled control piston that is prestressed counter to a spring. To make it possible that during operation to characterize the opening and closing operation of the nozzle needle, the nozzle needle is coupled via an intermediate piece to a servo piston that cooperates with the control piston. | ||||||
| 103 | Fuel injector assembly having a combined initial injection and a peak injection pressure regulator | US09472416 | 1999-12-27 | US06227175B1 | 2001-05-08 | He Jiang; Craig L. Savonen |
| A fuel injector assembly for an internal combustion engine including an injector body in fluid communication with a source of fuel and a nozzle assembly through which the fuel is dispersed from the fuel injector assembly during an injection event. A high pressure fuel delivery system provides high pressure fuel to the nozzle assembly. In addition, the fuel injector assembly includes a combined initial injection and peak injection pressure regulator which is operable to control the nozzle assembly to regulate the rate of fuel injection at the beginning of an injection event and is further operable to limit the maximum pressure of the fuel dispersed from the nozzle assembly. | ||||||
| 104 | Hydraulically actuated electronic fuel injection system | US09445623 | 2000-01-14 | US06213093B1 | 2001-04-10 | Sergi Yudanov; William Richard Mitchell |
| A hydraulically actuated electronically controlled fuel injection system comprises a pressure intensifier (6, 7) associated with a hydraulically controlled differential valve (4) having a poppet valve (27) opening into a working chamber (10) of the pressure intensifier (6, 7). An external groove (8) is provided on the plunger (7) of the intensifier (6, 7) for connection of the plunger's compression chamber (12) with a nozzle's locking chamber (17) during an injection cut-off period. | ||||||
| 105 | Hydraulically-actuated fuel injector with electronically actuated spill valve | US09243944 | 1999-02-04 | US06173699B1 | 2001-01-16 | Jon E. Kasen |
| A hydraulically actuated fuel injector includes an injector body that defines an actuation fluid cavity and a nozzle outlet, and further defines a low pressure area and a fuel pressurization chamber in fluid communication with a spill passage. A pumping element is positioned in the injector body and moveable between a retracted position and an advanced position. The pumping element has a first end exposed to fluid pressure in the actuation fluid cavity and a second end exposed to fluid pressure in the fuel pressurization chamber. An electronic spill valve attached to the injector body is moveable between an open position in which the spill passage fluidly connects the fuel pressurization chamber to the low pressure area, and a closed position in which the spill passage is closed. Opening and closing of the spill valve during an injection event produces various rate shaping injection effects. | ||||||
| 106 | Fuel injection device | US66452 | 1998-04-28 | US6112721A | 2000-09-05 | Susumu Kouketsu; Hitoshi Yokomura; Keiki Tanabe |
| A fuel injection system that can be used in a diesel engine is provided. The system includes a first accumulator for storing high-pressure fuel and a second accumulator for storing low-pressure fuel sufficiently lower in pressure than the fuel stored in the first accumulator. There is a first two-way electromagnetic valve disposed in a first fuel passage connecting the first accumulator with a fuel injection nozzle. A flow control apparatus controls a flow rate of fuel passing through a second fuel passage connecting a downstream side of the first two-way electromagnetic valve in the first fuel passage with the second accumulator. The flow control apparatus is placed in the second fuel passage. A second two-way electromagnetic valve is placed in a third fuel return passage which connects the fuel injection nozzle with a fuel tank. The second two-way electromagnetic valve switches the fuel injection modes of the fuel from its injection mode to its uninjection mode or vice versa. Also, there is provided a control device for controlling both the first two-way electromagnetic valve and the second two-way electromagnetic valve so that they open and close in response to operating conditions of the engine. | ||||||
| 107 | Hydraulically-actuated fuel injector with rate shaping spool control valve | US81253 | 1998-05-19 | US6053421A | 2000-04-25 | Scott A. Chockley |
| A hydraulically-actuated fuel injector includes an injector body that defines an actuation fluid inlet, a first actuation fluid cavity, a second actuation fluid cavity and a nozzle outlet. A piston is positioned in the injector body and is moveable between a retracted position and an advanced position. The piston has a primary hydraulic surface exposed to fluid in the first actuation fluid cavity, and an opposing hydraulic surface exposed to fluid in the second actuation fluid cavity. A control valve includes a spool valve member that is moveable a distance between a first position and a second position. The first actuation fluid cavity is closed to the actuation fluid inlet when the spool valve member is in its first position. The first actuation fluid cavity is open, but the second actuation fluid cavity is closed, to the actuation fluid inlet when the spool valve member is moving through a first portion of the distance. The first actuation fluid cavity and the second actuation fluid cavity are open to the actuation fluid inlet when the spool valve member is moving through a second portion of the distance. The first actuation fluid cavity is open to the actuation fluid inlet when the spool valve member is in its second position. | ||||||
| 108 | Fuel injection rate shaping apparatus for a unit injector | US421645 | 1995-04-13 | US5632444A | 1997-05-27 | Fred A. Camplin; Michael A. Flinn; Lianghe Zuo |
| A multipiece fuel pump plunger assembly for controlling the fuel injection rate and delivery during the initial injection portion of a fuel injection cycle for an internal combustion engine. The injector includes a two piece plunger assembly including a plunger and a plunger sleeve. The plunger having a small predetermined diameter and being slidably positioned within a plunger sleeve having a diameter greater than the diameter of the plunger. The multipiece plunger is advantageous because it allows for shaping of the rate of fuel injected into the combustion process thereby reducing the excess fuel flow in the early portion of the injection cycle. Elimination of the excess fuel flow results in lower oxides of nitrogen and particulate exhaust emission levels and less engine noise. | ||||||
| 109 | Dimethyl ether powered engine | US563800 | 1995-11-28 | US5626294A | 1997-05-06 | James C. McCandless |
| An internal combustion engine that is driven by dimethyl ether (DME) and a storage and delivery system for the DME that will reduce considerably the emissions of NO.sub.x and particulate. Existing internal combustion engines, fueled by conventional fuels can be economically converted to the use of DME as a fuel. | ||||||
| 110 | Fuel injector | US705317 | 1991-05-24 | US5176120A | 1993-01-05 | Takeshi Takahashi |
| A fuel injector comprising a restricted opening arranged between the pressure chamber and the pressure control chamber, a check valve for permitting fuel to flow only from the pressure control chamber to the pressure chamber, and an opening and closing valve opening when the fuel pressure in the pressure control chamber becomes lower than the fuel pressure in the pressure chamber, by a predetermined pressure. The restricted opening, the check valve and the opening and closing valve are arranged in parallel to each other, and by controlling the fuel pressure in the pressure control chamber by a fuel pressure control unit, a first pattern in which the fuel injection rate is gradually raised, and a second pattern in which the fuel injection rate is quickly raised, can be obtained. | ||||||
| 111 | Rate control in accumulator type fuel injectors | US316255 | 1989-02-24 | US4948049A | 1990-08-14 | Eric S. Brisbon; John B. Cavanaugh; Jeffrey P. DiCarlo; Rous S. Karlson |
| The invention provides means for controlling the rate of fuel injection of an accumulator injector of the type employing a pressure amplifying piston assembly. In one form of the invention, the injection rate is controlled by restricting the pressure decay in the amplifier chamber. In another form of the invention, means are provided for delaying the full opening of the injector valve needle after an initial valve opening. | ||||||
| 112 | Fuel injection device for internal combustion engines | US936396 | 1986-12-01 | US4826080A | 1989-05-02 | Marco A. Ganser |
| The opening and closing movement of a injector valve member (32) which closes and temporarily opens discharge orifices (52) communicating with the combustion chamber of an internal combustion engine, for example a diesel engine, is controlled by the fuel pressure in a control chamber (42) arranged at one end of the injector valve member (32). The fuel pressure in said control chamber (42) is controlled by two orifices (26,38) communicating with one another. One of the orifices (38) is connected to a high pressure fuel inlet (12). The other orifice (26) is closed at one end by a solenoid operated pilot valve (72). Opening of the latter results in a single fuel jet passing through the orifices (26,38) which causes the opening of the injector valve member (32). | ||||||
| 113 | Distributor type fuel injection pump | US480129 | 1983-03-29 | US4449504A | 1984-05-22 | Yasuhiro Furuhashi; Yukinori Miyata; Osamu Hishinuma |
| A distributor type fuel injection pump has an accumulator. When an internal combustion engine is in low-speed rotation or in low-load operation, the accumulator accumulates part of the fuel pressurized within a fuel compression chamber, thereby lowering the fuel injection rate. Also, the fuel injection pump is provided with compensator which operates simultaneously with the accumulator. While the injection rate is lowered by operation of the accumulator, the compensator extends the injection period to compensate for the reduction of injection quantity attributed to reduction of the injection rate. | ||||||
| 114 | Control member for fuel injection devices | US133410 | 1980-03-24 | US4389987A | 1983-06-28 | Gerhard Frankle; Friedrich-Wilhelm Hase |
| A control member for regulating a flow of fuel to fuel injection devices of an air-compressing internal combustion engine. The control member is adapted to be arranged in one of a zone of the injection valve or within the injection valve. The control member includes a flow-controlling axially movable control piston having an axial bore with the control piston being urged, by a compression spring, into an end position for preventing a full flow of fuel through the control member. A spring chamber is provided for accommodating the compression spring with a throttle being arranged in an end face of the control piston, which throttle communicates the inlet line means with the spring chamber through the axial bore in the control piston. An arrangement is provided for minimizing an open volume of the spring chamber and at least one first bore is provided in the control piston for selectively communicating the axial bore with the outlet duct. A control edge arrangement is provided for controlling an opening and closing of the first bore with the control edge being arranged so as to close the first bore after the control piston is axially displaced over a predetermined portion of a working stroke. A throttle bore, in communication with the axial bore, is provided in the control means at a position offset in a longitudinal direction of the control piston with respect to the first bore. At least one second bore is provided in the control piston in a position offset in a longitudinal direction of the control piston with respect to a further throttle bore in a direction toward an end face of the control piston. | ||||||
| 115 | Fuel injection nozzle | US766300 | 1977-02-07 | US4165838A | 1979-08-28 | Kenji Nakayama; Kazuo Uchida |
| A fuel injection nozzle proper comprises a spring-loaded valve which is opened by fuel pressure in a fuel supply passageway to inject fuel directly into an engine cylinder when the fuel pressure is above a first predetermined value. A check valve is provided in the fuel supply passageway which is opened when the fuel pressure is above a second predetermined value which is higher than the first predetermined value to allow fuel flow through the check valve. A longitudinal passageway having an orifice formed through the check valve element allows fuel flow therethrough even when the fuel pressure is below the second predetermined value so that fuel flows through the check valve to a lesser extent when the check valve is closed than when the check valve is opened so that the fuel flow is constricted and fuel injection is prolonged at low engine speeds thereby reducing combustion noise. | ||||||
| 116 | Variable orifice fuel injection nozzle | US642962 | 1975-12-22 | US4034917A | 1977-07-12 | John M. Bailey |
| There is disclosed a fuel injection nozzle of variable orifice design including a check valve to control fluid to the orifice from the fluid pressure supply to the nozzle assembly. The valve is operative together with a piston to control the relationship between the fluid pressure adjacent to the variable orifice and the effective open flow area of said variable orifice in a manner such as to cause a finely atomized fluid spray to be delivered from the orifice over a wide range of fluid flow rates. | ||||||
| 117 | FUEL INJECTOR HAVING THREE STAGES | US15335907 | 2016-10-27 | US20180119599A1 | 2018-05-03 | Xiaogang Zhang |
| An engine, fuel injector, and method are disclosed. The method may include aligning an exhaust gas passage with an exhaust gas source to allow exhaust gas to enter a pre-chamber for a first duration; aligning a fuel passage with a fuel source to allow fuel to enter the pre-chamber for a second duration; and aligning injector nozzle connectors with injector nozzles, for a third duration, to allow a mixture of the fuel and the exhaust gas to be injected from the pre-chamber to the combustion chamber. | ||||||
| 118 | Fuel injection device | US15364846 | 2016-11-30 | US09726127B2 | 2017-08-08 | Yoshihito Yasukawa; Hideharu Ehara; Tohru Ishikawa; Motoyuki Abe; Ryo Kusakabe |
| A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body. | ||||||
| 119 | Fuel Injection Device | US15364846 | 2016-11-30 | US20170082078A1 | 2017-03-23 | Yoshihito YASUKAWA; Hideharu EHARA; Tohru ISHIKAWA; Motoyuki ABE; Ryo KUSAKABE |
| A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body. | ||||||
| 120 | Fuel injection device | US14763029 | 2014-01-10 | US09541046B2 | 2017-01-10 | Yoshihito Yasukawa; Hideharu Ehara; Tohru Ishikawa; Motoyuki Abe; Ryo Kusakabe |
| A fuel injection valve having a variable stroke mechanism is constructed. A valve body provided to be slidable; a first movable element for cooperating with the valve body; an inner fixed iron core provided at a position to oppose a second movable element; an outer fixed iron core; and a coil are included. A lift amount of the second movable element is set larger than a lift amount of the first movable element, and a portion of the second movable element is projected into the first movable element. In this way, large and small lifts are constituted by using a difference between magnetic attractive forces that are generated in the first movable element and the second movable element by a current supplied to the coil. | ||||||
QQ群二维码
意见反馈
意见反馈