• 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:
    A fuel injection system for direct injection diesel engines with a depression in the tops of the pistons. A first injection pump has a regulator and accompanying first injector for each cylinder, the injectors being disposed to spray the fuel in a zone around the center axis of the respective piston depression. A second injection pump has a regulator and accompanying second injector for each cylinder, the second injectors being disposed to inject fuel obliquely from the side into the respective piston depression in a direction counter to the rotation of the intake air before the fuel from the first injectors is injected.
    公开号:SU1243635A3
    申请号:SU782688145
    申请日:1978-11-22
    公开日:1986-07-07
    发明作者:Эрнст Аксель Хольмер Хейнц
    申请人:Аб Вольво (Фирма)；
    IPC主号:
    专利说明:

    4 The invention relates to an engine for use in a high-pressure fuel system.
    The aim of the invention is to reduce exhaust emissions.
    FIG. 1 shows a diesel engine with fuel injection system, top view; on ig. 2 is a projection of the directions of fuel injection into the piston recesses, top view; in fig. 3 - the same, in the plane Y - Z, side view; FIG. the same, in plane X - Z, side view. The system contains a main injection pump 1 with a regulator 2. The pump is a conventional pd-Hbtfi pump, which, through the feed pipes 3, supplies the top piper to the main multi-nozzle 4. Pump 1. has a drive from the crankshaft of a diesel engine through the shaft 5.
    The engine is equipped with an additional pump 6 with a regulator, which is a distribution pump that feeds fuel through feed pipes 7 to an additional single-nozzle nozzle 8. Pump 6 is also driven by a crankshaft through a gear drive. A ha 9 connects the pump 6 regulator to the pump 2 regulator 2 and to the gas pedal 10.
    The nozzle of the additional nozzle is directed obliquely tangentially to the side of the notch of the piston in the direction B, and the nozzle of the main nozzle is directed along the arrows C. The nozzle of the additional nozzle is angled 10-20 ° to the central axis of the piston piston notches, while the projection of this direction on the plane of the transverse
    five
    0
    five
    0
    five
    0
    The sections of the cylindrical recess of the piston are made tangentially to its central area of a circle, the radius of which is 0.35-0.45, preferably 0.40, of radius R of the cylindrical recess of the piston.
    The system works as follows.
    The pump 6 has two adjustments of the volume of injected fuel. A larger injection volume is used only during start-up, and a smaller volume is used during main operation. The injection angle of the first pump 1 is compressed with a lag of about ten degrees of rotation of the crankshaft from the second pump 6, and the two regulators of pumps 1 and 6 are connected through the rod 9 in such a way that with a low compression ratio (idle) the fuel is only pump 6 and, when the compression ratio is increased, the pump 6 increases the injection to its full volume, and then the pump 1 starts operation and its fuel supply increases to the volume of the corresponding diesel operation mode.
    When the load of the diesel decreases, the pump 1 "reduces the fuel supply first.
    The main pump 1 injects fuel with a low dethan number, and the additional one injects fuel with a high set number.
    Thus, the proposed system reduces exhaust emissions by improving the process of mixing and fuel injection characteristics.
    FIG. g
    fzg
    Editor G. Volkova
    Compiled by V .. Pavlyukov
    Tehred N. Bonkalo Proofreader L. Piligenko
    Order 3723/60 Circulation 523 Subscription
    . VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    fig a
    权利要求:
    Claims (2)
    [1]
    1. SYSTEM OF DIRECT FUEL INJECTION IN DIESEL with a cylindrical recess in the piston head, containing the main and additional pumps with regulators and, accordingly, connected to the pumps, the main multi-nozzle nozzle with a number of nozzle openings located around the central axis of the piston and placed with an offset relative to>
    In addition to the central axis of the piston, there is an additional single nozzle nozzle, characterized in that, in order to reduce the toxicity of exhaust gases, the nozzle of the additional nozzle is directed obliquely along the tangent to the side of the piston recess.
    [2]
    2. The system according to claim 1, characterized in that the direction of the nozzle of the additional nozzle is made at an angle of 10-20 ° to the central axis of the piston, preferably 15 to the plane of the cross section of the cylindrical recess of the piston, while the projection of this direction g on the plane of the cross section of the cylindrical recess the piston is made tangent to its central zone in the form of a circle whose radius is 0.35-0.45, preferably 0.40, of the radius of the cylindrical recess of the piston.
    * 1243 635 2
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1243635A3|1986-07-07|System for direct injection of fuel to diesel engine
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    同族专利:
    公开号 | 公开日
    AU534505B2|1984-02-02|
    NL190084C|1993-10-18|
    AU4167178A|1979-05-31|
    CH640918A5|1984-01-31|
    FR2410145B1|1983-04-15|
    US4399786A|1983-08-23|
    DE2849778A1|1979-05-31|
    GB2009317A|1979-06-13|
    NL190084B|1993-05-17|
    GB2009317B|1982-04-21|
    US4273084A|1981-06-16|
    IT1107657B|1985-11-25|
    BR7807637A|1979-07-31|
    NL7811473A|1979-05-28|
    JPS6261766B2|1987-12-23|
    IT7852019D0|1978-11-22|
    SE7713231L|1979-05-24|
    SE409492B|1979-08-20|
    FR2410145A1|1979-06-22|
    DE2849778C2|1985-10-24|
    JPS5482517A|1979-06-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1543638A|1920-03-15|1925-06-23|Int Harvester Co|Automatic fuel switch|
    US1767701A|1924-10-25|1930-06-24|Maschf Augsburg Nuernberg Ag|Internal-combustion engine of the solid-fuel injection type|
    US2030086A|1931-11-13|1936-02-11|Packard Motor Car Co|Internal combustion engine|
    DE680957C|1936-10-02|1939-09-11|Kloeckner Humboldt Deutz Akt G|Self-igniting, air-compressing internal combustion engine intended for operation with tar oil|
    US2269104A|1938-05-13|1942-01-06|Jarvis C Marble|Internal combustion engine|
    DE733128C|1938-05-29|1943-03-19|Werke Kiel Ag Deutsche|Jet injection machines operating on hard-to-burn synthetic fuels with a main nozzle and a pre-spraying auxiliary nozzle|
    DE851570C|1940-03-02|1952-10-06|Daimler Benz Ag|Pre-chamber diesel engine|
    US2606538A|1946-12-03|1952-08-12|Texas Co|Fuel injection internal-combustion engine|
    US2484009A|1948-02-25|1949-10-11|Texas Co|Internal-combustion engine and method of operating same|
    US3022425A|1956-07-11|1962-02-20|Midland Ross Corp|Dual fuel control systems for engines burning diesel-type fuels|
    DE1260858B|1964-04-30|1968-02-08|Daimler Benz Ag|Internal combustion engine with direct fuel injection|
    CA981998A|1972-06-21|1976-01-20|Everett M. Barber|Internal combustion engine|
    JPS50132310A|1974-04-05|1975-10-20|
    DE2513587A1|1975-03-27|1976-10-07|Daimler Benz Ag|AIR COMPRESSING FOUR-STROKE COMBUSTION ENGINE WITH DIRECT INJECTION|
    SE409492B|1977-11-23|1979-08-20|Volvo Ab|FUEL INJECTION SYSTEM FOR DIESEL ENGINES|SE409492B|1977-11-23|1979-08-20|Volvo Ab|FUEL INJECTION SYSTEM FOR DIESEL ENGINES|
    DE2901211C2|1979-01-13|1983-12-01|Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen|Method for operating an air-compressing, self-igniting internal combustion engine and device for carrying out the method|
    DE2901210C2|1979-01-13|1984-01-12|Klöckner-Humboldt-Deutz AG, 5000 Köln|Method for operating an air-compressing, self-igniting internal combustion engine|
    DE3151293A1|1981-12-24|1983-07-07|Robert Bosch Gmbh, 7000 Stuttgart|FUEL INJECTION SYSTEM FOR DIRECT FUEL INJECTION IN COMBUSTION ENGINES|
    DE3243176C2|1982-11-23|1989-03-02|Deutsche Forschungs- Und Versuchsanstalt Fuer Luft- Und Raumfahrt Ev, 5000 Koeln, De|
    DE3243175C2|1982-11-23|1986-06-19|Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln|Fuel injector|
    US4548172A|1983-06-22|1985-10-22|Caterpillar Tractor Co.|Ignition-assisted fuel combustion system|
    US4543930A|1983-11-17|1985-10-01|Southwest Research Institute|Staged direct injection diesel engine|
    IT1183174B|1984-04-18|1987-10-05|Hatz Motoren|INTERNAL COMBUSTION INJECTION MACHINE WITH MULTIPLE CYLINDERS|
    US4539948A|1984-05-11|1985-09-10|General Motors Corporation|Two-cycle diesel engine and method for methanol and like fuel operation|
    FR2663084B1|1990-06-07|1992-07-31|Semt Pielstick|INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE.|
    US5365902A|1993-09-10|1994-11-22|General Electric Company|Method and apparatus for introducing fuel into a duel fuel system using the H-combustion process|
    US6378487B1|2000-09-01|2002-04-30|International Truck And Engine Corporation|Method and apparatus for pre-pilot fuel injection in diesel internal combustion engines|
    CN112879147A|2021-01-25|2021-06-01|华中科技大学|Oil injection system suitable for high power density diesel engine|
    DE102021005318A1|2021-10-26|2022-01-27|FEV Europe GmbH|Injection system for an internal combustion engine with a first and a second injector|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7713231A|SE409492B|1977-11-23|1977-11-23|FUEL INJECTION SYSTEM FOR DIESEL ENGINES|
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