• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1512134 Fuel injection pumps; starting IC engines STANADYNE Inc 27 Sept 1976 [14 Oct 1975] 40007/76 Headings F1A and F1B A fuel injection pump for an I.C. engine comprises bores 40, 40a from which, during engine starting, fuel is pumped to a distributer outlet 42 by plungers 34, 35 actuated by a common cam ring (46), a passage 48, 50 connecting the bores 40, 40a being closed by a valve 54 after start-up so that thereafter fuel is only pumped by the plungers 34. The valve 54 is loaded by a spring 58 to a position in which a ball 62 closes a passage 60 and a recess 52 completes the passage 48, 50. Fuel from an engine driven feedpump 24 is supplied to the passage 60 and acts to unseat the ball 62 when the output pressure of the pump 24 builds up to a predetermined value. Once the ball is displaced fuel enters a chamber 71 and acts on the larger surface of the valve 54 to move it leftwards thereby closing the passage 48 and opening the passage 50 to a drain chamber 76. To prevent fuel from the passage 48 from leaking into the chamber 71 and prematurely moving the valve 54, the chamber is connected to the drain chamber 76 by a passage 77 containing a throttle 74. Displacement of the valve 54 closes the passage 77 to prevent fuel loss from the chamber 71 during normal operation. Leaf springs (80 or 80a) are adjustable to control the maximum strokes of the plungers.
    公开号:SU927130A3
    申请号:SU762403510
    申请日:1976-10-01
    公开日:1982-05-07
    发明作者:Вэйд Дэвис Чарльз
    申请人:Станадайн Инк.(Фирма)；
    IPC主号:
    专利说明:

    The opening of the rotor from the expansion side of the spool spring is in communication with the control cavity through the throttle.
    FIG. 1 shows a pump, a longitudinal section; in fig. 2 shows a cross section of the pump in the area of the main injection section, section A-A in FIG. one ; in fig. 3 is a cross-section of the pump in the area of the additional injection section (section B-B in FIG. 1) i in FIG. - principle of the pump; in fig. 5 pump, the main injection section of which is provided with additional plungers, cross section.
    The pump includes a housing 1 in which a rotor 2 is installed, the main 3 and additional pressure sections, the first of which has plungers 5. and the second - plungers 6, placed respectively in the radial holes 7 and 8 of the rotor 2 and interacting with the profile protrusions 9 of the cam washer 10, injection chambers P and 12 formed by the walls of the radial holes 7 and 8 and the ends of the plungers 5 and 6, the channel TK in the rotor 2 for connecting the injection chambers 11 and 12 between themselves and with the discharge pipe I, and the booster line 15 connecting the chambers ry 11 and 12 with the feed pump 16.
    The channel 13 of the rotor 2 is provided with a control device for connecting an additional injection section k to the main 3 in fractional modes.
    The control device is designed as a spring-loaded spool 18 with a groove 19 for communicating the injection chambers 11 and 12j of the rotor 2 installed in the aperture 20, and between the spring 21-free end of the spool 18 and the walls of the aperture 20 is made the control cavity 22 booster line 15 through ball valve 23
    The radial holes 7 and 8 of the plungers 5 and 6 of the main 3 and additional C sections are located in the same plane. The plungers of the main 3 and additional C sections are driven by the same profile protrusions 9 of the cam washer 10. The opening 20 of the rotor 2 on the spring side of the spring 17 of the spool 18 communicates with the control cavity 22 through the throttle 2. In one of the variants the main section 3 is equipped additional plungers 25 The pump operates as follows.
    When starting the engine, as well as at a low frequency of rotation of its crankshaft, the fuel pressure generated by the boost pump 16 is low. Control cavity
    22 is disconnected from the booster line 15 by a ball valve 23, which is pressed to its seat by a spring 17 through the valve 18. In this position of the valve 18, its groove 19 communicates both pressure chambers 11 and 12 of the rotor 1. Therefore, the fuel supply to the pressure line 1 and. the engine is carried out by the main 3 and additional V injection sections.
    When a certain frequency of rotation of the engine is reached, the pressure created by the boost pump 16 increases and, overcoming the resistance of the spring 17, causes the slide 18 to move in the direction of the latter. Due to the communication of the control cavity 22 with the help of throttles 2 with a hole 20 of the rotor 2 on the placement side of the spring 17, the movement of the spool 18 and uncoupling of the injection chambers 11 and 12 occurs gradually with increasing engine speed. In the mode set by the tightening of the spring 17, when the pressure in the control cavity 22 is increased, the spool 18 is mounted on the stop, the chambers 11 and 12 are uncoupled, and the groove 19 connects the chamber 12 to the aperture 20 of the rotor 2 at the location of the spring 17, which makes it difficult movement, the plungers 6, making idling.
    When the engine is installed, the spool 18 returns to its original position and the ball valve 23 separates the control cavity 22 from the booster line 15.
    Thus, supplying the pump with a control device provides an increase in cyclic feeds for engine starting conditions.
    权利要求:
    Claims (3)
    [1]
    5 claims
    1. Distribution rotary fuel pump for an internal combustion engine, containing a housing in which a rotor is installed, the main and additional injection sections, each of which have a pair of plungers placed in the radial holes of the rotor and interacting with the profile lugs of the cam disc, the pressure chambers formed the walls of the radial holes and the ends of the plungers, a channel in the rotor for connecting the injection chambers among themselves and with the discharge line and the booster line, connecting chambers with a booster pump, characterized in that, in order to increase the cycle feeds for engine starting modes, the rotor channel is provided with a control device for connecting an additional discharge section to the main one at the fractional modes.
    2. A pump according to claim 1, characterized in that the control device is designed in the form of a spring-loaded spool with a groove for communication of the pressure chambers installed in the rotor aperture, with the control cavity connected to the pumping-up valve between the spring-free end of the valve and the walls of the bore line through the ball valve.
    [2]
    3. A pump according to claim 1, characterized in that the radial holes of the plungers of the main and Additional sections are located in the same plane.
    [3]
    . Pump on PP. 1 and 3. about t l and cusious by the fact that plungers
    the main and additional sections are driven by the same profile protrusions of the cam washer.
    5. Pump on PP. 1 and 2, characterized in that the hole
    the rotor on the placement side of the spool spring is in communication with the control cavity through the throttle.
    Sources of information taken into account in the examination
    1. USSR author's certificate No. 153811, cl. F 02 M 51/12,.
    20 77
    d
    F1 / g, J
    类似技术:
    公开号 | 公开日 | 专利标题
    SU927130A3|1982-05-07|Rotary distributing fuel pump
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    US5040511A|1991-08-20|Fuel injection device for internal combustion engines, in particular unit fuel injector
    US2612842A|1952-10-07|Fuel injection pump
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    US4426983A|1984-01-24|Liquid fuel pumping apparatus
    US4879984A|1989-11-14|Fuel injection pump for internal combustion engines
    US4469069A|1984-09-04|Fuel injection device
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    US4146003A|1979-03-27|Fuel injection pumping apparatus with drain passage
    US4798189A|1989-01-17|Fuel injection pump
    US4492200A|1985-01-08|Fuel pumping apparatus
    SU909263A1|1982-02-28|Injection nozzle
    US4524737A|1985-06-25|Fuel injection apparatus with an auxiliary pump for pilot and main injection
    US4216754A|1980-08-12|Fuel injection system
    US2053312A|1936-09-08|Fuel injector for internal-combustion prime-movers
    US2922369A|1960-01-26|Fuel injection apparatus
    SU506315A3|1976-03-05|Distribution pump
    EP0821154B1|2002-01-02|Fuel pumping apparatus
    RU2071572C1|1997-01-10|High-pressure fuel injection pump
    同族专利:
    公开号 | 公开日
    BR7606842A|1977-08-30|
    CA1056240A|1979-06-12|
    AR211620A1|1978-02-15|
    ES452380A1|1977-11-01|
    ZA765232B|1977-08-31|
    IT1068789B|1985-03-21|
    SE436061B|1984-11-05|
    US4083345A|1978-04-11|
    AU501973B2|1979-07-05|
    GB1512134A|1978-05-24|
    YU252976A|1982-02-28|
    FR2328117B1|1982-11-05|
    DE2643466A1|1977-04-28|
    SE7610391L|1977-04-15|
    FR2328117A1|1977-05-13|
    DE2643466C2|1989-03-02|
    JPS6112107B2|1986-04-07|
    JPS5248728A|1977-04-19|
    AU1852876A|1978-04-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2765741A|1953-01-19|1956-10-09|Bosch Arma Corp|Fuel injection pump|
    CH324307A|1953-11-17|1957-09-15|Bosch Gmbh Robert|Fuel injection pump on an internal combustion engine|
    FR1125708A|1955-06-02|1956-11-06|Adjustment device for injection pumps|
    US3000319A|1957-08-07|1961-09-19|Gen Motors Corp|Pump control|
    FR1253180A|1960-04-06|1961-02-03|Maschf Augsburg Nuernberg Ag|Fuel injection pump|
    US3105441A|1960-04-22|1963-10-01|Thompson Ramo Wooldridge Inc|Dual flow means for gear fuel pumps|
    DE1526711A1|1966-01-29|1969-12-04|Maschf Augsburg Nuernberg Ag|Fuel injection pump for large quantities in internal combustion engines|
    US3692432A|1970-12-22|1972-09-19|Ford Motor Co|Two-stage positive displacement pump|
    FR2221625B2|1971-12-22|1976-04-30|Roto Diesel Sa|
    FR2166746A5|1972-01-07|1973-08-17|Ustav Pro Vyzkum Motorovych Vo|
    US3771506A|1972-06-07|1973-11-13|Stanadyne Inc|Fuel injection pump and automatic timing means therefor|US4275865A|1977-08-24|1981-06-30|Lucas Industries Limited|Fluid control valves|
    GB1603415A|1977-04-30|1981-11-25|Lucas Industries Ltd|Liquid fuel injection pumps|
    ES481775A1|1978-08-03|1980-02-16|Lucas Industries Ltd|Liquid fuel pumping apparatus|
    FR2437502B1|1978-09-29|1983-06-17|Cav Roto Diesel|
    US4381182A|1979-07-27|1983-04-26|Lucas Industries Limited|Fuel injection pump|
    GB2102890B|1981-06-26|1984-09-12|Lucas Ind Plc|Fuel pumping apparatus|
    JPS598434U|1982-07-08|1984-01-19|
    GB2132705B|1982-12-21|1986-01-08|Lucas Ind Plc|Fuel injection pumps|
    JPH0652067B2|1983-08-17|1994-07-06|日産自動車株式会社|Injection rate control device for distributed fuel injection pump|
    US4793311A|1986-02-03|1988-12-27|Stanadyne, Inc.|Fuel injection pump with multi-state load/speed control system|
    DE3870956D1|1987-03-26|1992-06-17|Automotive Diesel Gmbh|INJECTION DEVICE FOR DIESEL ENGINES.|
    DE3816508A1|1988-05-14|1989-11-23|Bosch Gmbh Robert|FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE|
    GB8823846D0|1988-10-11|1988-11-16|Lucas Ind Plc|Fuel pumping apparatus|
    DE3844363A1|1988-12-30|1990-07-05|Bosch Gmbh Robert|Electrically controlled fuel injection pump|
    GB8902860D0|1989-02-09|1989-03-30|Lucas Ind Plc|Fuel injection pump|
    EP0643220B1|1993-09-14|1998-04-22|Lucas Industries Public Limited Company|Fuel System|
    GB9411054D0|1994-06-02|1994-07-20|Lucas Ind Plc|Variable rate pump|
    JPH09151823A|1995-11-28|1997-06-10|Denso Corp|Fuel feeding device|
    JP2000310171A|1999-04-27|2000-11-07|Mitsubishi Electric Corp|Fuel supply device|
    US6866025B1|1999-11-18|2005-03-15|Siemens Vdo Automotive Corp.|High pressure fuel pump delivery control by piston deactivation|
    US6973921B2|2003-12-12|2005-12-13|Caterpillar Inc.|Fuel pumping system and method|
    JP4148145B2|2004-01-22|2008-09-10|株式会社デンソー|Fuel supply device for internal combustion engine|
    US7398763B2|2005-11-09|2008-07-15|Caterpillar Inc.|Multi-source fuel system for variable pressure injection|
    US7353800B2|2006-05-24|2008-04-08|Caterpillar Inc.|Multi-source fuel system having grouped injector pressure control|
    US7431017B2|2006-05-24|2008-10-07|Caterpillar Inc.|Multi-source fuel system having closed loop pressure control|
    US7392791B2|2006-05-31|2008-07-01|Caterpillar Inc.|Multi-source fuel system for variable pressure injection|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/621,945|US4083345A|1975-10-14|1975-10-14|Fuel injection pump|
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