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    • 3. 发明申请
    • FUEL-INJECTION SYSTEM FOR A TWO-STROKE INTERNAL-COMBUSTION ENGINE
    • 燃料喷射装置,用于二冲程内燃机
    • WO1996008644A1
    • 1996-03-21
    • PCT/DE1995001063
    • 1995-08-11
    • ROBERT BOSCH GMBHREMBOLD, HelmutHAAG, GottlobBRITSCH, HeinzSTUTZENBERGER, HeinzMUELLER, Uwe
    • ROBERT BOSCH GMBH
    • F02D01/06
    • F02D1/06F02B2075/025F02D1/025F02D1/065F02M69/10
    • With prior art two-stroke fuel-injection systems, which inject the fuel directly into the combustion chamber by means of a fuel-injection valve, the engine operating parameters which affect the amount of fuel delivered by the fuel-injection pump can only be modified with difficulty and this requires additional equipment to be fitted. The fuel-injection system (1) proposed for a two-stroke engine (4) has a fuel-injection pump (2) with an adjustment device (90) to which the pulsating pressure in the interior (10) of the engine crankcase (11) is fed through an impulse pressure line (100) in order to meter the amount of fuel delivered by the pump in dependence on the pressure in the crankcase, thus ensuring that the optimum amount of fuel is delivered for combustion and hence reducing the exhaust-gas emission and fuel consumption of the engine. This fuel injection system is intended for use in two-stroke internal-combustion engines.
    • 在已知的燃料喷射器用于两冲程内燃机,其喷射通过燃料喷射阀的装置中的燃料直接喷入燃烧室,是复杂的,仅由附加的装置的燃料喷射泵的输送速率适应不断变化的二冲程内燃机可能的操作参数的装置。 本发明的燃料喷射器(1),用于二冲程内燃机(4)具有二冲程内燃发动机的曲轴箱(11)的在其内部(10)的燃料喷射泵(2)与通过脉冲压力管线(100)的调节装置(90) (2)脉动的内部压力被提供给计根据燃料喷射泵(2)的输送速度的内部压力,减少,使得通过最佳地适应于燃烧流动的废气排放和二冲程内燃机的消耗的(4)。 本发明的燃料喷射装置适用于使用用于二冲程内燃机。
    • 4. 发明申请
    • ELECTRO-HYDRAULIC CONTROL DEVICE FOR AN INTERNAL-COMBUSTION ENGINE VALVE
    • 用于内燃机阀门的电液控制装置
    • WO1991008383A1
    • 1991-06-13
    • PCT/DE1990000818
    • 1990-10-26
    • ROBERT BOSCH GMBHSTUTZENBERGER, Heinz
    • ROBERT BOSCH GMBH
    • F01L01/34
    • F01L9/025
    • The invention concerns a valve-control device in which the tappet volume between a piston (3) operated by a drive cam (6) and a piston (9) operated by the engine-cylinder valve (11, 12) can be decreased by means of a magnetically operated valve (21) mounted in an outlet channel (17). Located in this outlet channel (17) is a hydraulically controlled shut-off valve (18) which is operated only when the valve piston (9) has covered a certain minimum distance. This minimum distance corresponds to the camshaft rotation sector ( DEG NW), when the cam is acting on the shut-off valve (18), over which control by the magnetically operated valve (21) is impossible owing to the shut-off valve. Thus even if the opening times of the cylinder valves in a multi-cylinder engine overlap, the pre-determined control times of the outlet channels (17) of the individual cylinder valves are prevented from overlapping by the magnetically operated valve (21).
    • 本发明涉及一种阀控制装置,其中由驱动凸轮(6)操作的活塞(3)和由发动机气缸阀(11,12)操作的活塞(9)之间的挺杆容积可以通过装置减小 安装在出口通道(17)中的磁力操作阀(21)。 位于该出口通道(17)中的是液压控制截止阀(18),仅在阀活塞(9)已经被覆盖一定的最小距离时才被操作。 当凸轮作用在截止阀(18)上时,该最小距离对应于凸轮轴旋转扇区(DEG NW),由于截止阀,不可能通过磁力操作阀(21)进行控制。 因此,即使多缸发动机中的气缸阀的打开时间重叠,也能够防止各气缸阀的出口通路17的预定控制时间被磁力作用的阀21重叠。