Fuel jet for diesel with air compressor

专利摘要:
A fuel injector for internal combustion engines having an axially slidable nozzle needle capable of being lifted off its sealing seat by pressure of fuel against at least one spring and having a control pintle below the sealing seat sliding in a blind-hole recess is provided with the improvement comprising a cavity starting immediately below the sealing seat and formed as an eccentric widening extending parallel to the blind-hole type recess, said spray holes opening into said blind-hole type recess and the cross sectional areas of the nozzle seat gap and the cavity at each position of the needle nozzle are greater than the cross sectional area of the at least one spray hole uncovered at any time by the movement of the control pintle.
公开号:SU818498A3
申请号:SU782624902
申请日:1978-06-09
公开日:1981-03-30
发明作者:Урлауб Альфред；Мюллер Экарт
申请人:Машиненфабрик Аугсбург-Нюрнбергаг (Фирма)；
IPC主号:

专利说明:

(54) FUEL JET FOR DIESEL WITH AIR COMPRESSOR
When the lifting height of the needle needle 1 is low, only parts, nozzle holes, such as a nozzle hole 7, are opened with an inlet 11 located at the bottom 10 of the well 8, or a nozzle hole 5 with the inlet 13. The introduction of expansion 9 makes it possible to reduce the process of throttling when the needle 1 is raised and thereby to ensure the total pressure at the nozzle entrance, holes 5-7, as they open.
Thus, the proposed nozzle provides improved atomization due to the increased pressure at nozzle openings.

权利要求:
Claims (3)
[1]
1. Diesel fuel nozzle with an air compressor, a spring loaded locking needle with an Itift and a nozzle with a sealing seat, nozzle holes and a well for accommodating a Shtilt from the sealing seat to the bottom of the well, the expansion cross-section being larger than the cross-section of the nozzle holes.
[2]
2. The choke of POP.1, characterized in that part of the matching holes are made with entrances located at the bottom of the well.
[3]
3. The injector according to claim 1, is distinguished by the fact that the pin is provided with an annular groove, and at least one nozzle opening has an inlet,
combined with an annular groove, and the input of at least one other nozzle orifice is located between the annular groove and the end face of the pin.
Sources of information taken into account in the examination
1. Japanese patent number 13889, cl. 51 E 43, 1971.
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类似技术:

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同族专利:

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IT7824364D0|1978-06-09|

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SE7806697L|1978-12-11|

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FR2393946A1|1979-01-05|

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CH628957A5|1982-03-31|

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DE2726074A1|1978-12-21|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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US1833080A|1931-01-14|1931-11-24|Worthington Pump & Mach Corp|Fuel injection or spray valve|

---

DE767886C|1941-07-11|1954-05-31|Maschf Augsburg Nuernberg Ag|Closed multi-hole nozzle for injection internal combustion engines, especially diesel engines|

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US2625435A|1948-09-10|1953-01-13|Voive Ab|Fuel valve and nozzle for internal combustion engines|

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US3442451A|1967-06-14|1969-05-06|Gen Motors Corp|Dual stage accumulator type fuel injector|

---

US3559892A|1968-06-18|1971-02-02|Ambac Ind|Fuel injection nozzle with auxiliary spray orifice|

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US3612407A|1968-09-20|1971-10-12|Komatsu Mfg Co Ltd|Multiorifice-type airless injection nozzle|

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FR2050592A5|1969-06-18|1971-04-02|Ffsa|DE2930716C2|1979-07-28|1988-09-08|Daimler-Benz Ag, 7000 Stuttgart, De|

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JPS631351B2|1979-12-13|1988-01-12|Nippon Paint Co Ltd|

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DE3032735A1|1980-08-30|1982-04-22|Robert Bosch Gmbh, 7000 Stuttgart|Fuel injector for IC engine - has orifice area varied to keep discharge pressure independent of quantity injected|

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DE3502642A1|1985-01-26|1986-07-31|Daimler-Benz Ag, 7000 Stuttgart|FUEL INJECTION VALVE FOR AN AIR-COMPRESSING INJECTION COMBUSTION ENGINE|

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US4796816A|1987-09-21|1989-01-10|Gregory Khinchuk|Impinging-jet fuel injection nozzle|

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JPH025753A|1988-06-23|1990-01-10|Aisan Ind Co Ltd|Fuel injection valve and nozzle thereof|

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JPH03117673A|1989-09-29|1991-05-20|Hino Motors Ltd|Fuel injection device|

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JP2765178B2|1990-04-11|1998-06-11|株式会社デンソー|Fuel injection nozzle|

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US5285755A|1993-03-08|1994-02-15|Chrysler Corporation|Open chamber diesel engine having a piston with recesses therein|

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DE19645900A1|1996-11-07|1998-05-14|Bosch Gmbh Robert|Fuel injection valve for internal combustion engine|

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US5899389A|1997-06-02|1999-05-04|Cummins Engine Company, Inc.|Two stage fuel injector nozzle assembly|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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DE19772726074|DE2726074A1|1977-06-10|1977-06-10|FUEL INJECTOR|

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