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    63.
    发明专利
    未知

    公开(公告)号：DE3772363D1

    公开(公告)日：1991-09-26

    申请号：DE3772363

    申请日：1987-12-02

    Applicant: BOSCH GMBH ROBERT

    Inventor： FEHLMANN WOLFGANG ,  HOEFER GERALD ,  JUNGER DIETER ,  STUMPP GERHARD

    IPC: F02M41/12 ,  F02M45/12

    Abstract: The fuel injection pump piston (4) contains a relief duct (14) from the pump chamber to a first relief outlet (16) controlled to vary the amounts injected by the upper face (19) of a bush (18) slidable on the piston by a regulator (40). The relief duct connects, via a radial bore (50), to a second outlet (52) operating in conjunction with a duct (57) in the bush, connecting to the relief chamber. The bore (53) of the bush contains an annular groove (54) connecting to limited length, axial grooves (55) in the piston, which are connectable to the second outlet after an initial piston stroke (sx) determined by the load-dependent axial bush position. The connection sets up a throttled relief connection, as long as one of grooves registers with a control port (58), connecting to the bush duct. The duration of this connection may be variable by the bush rotation.

    Method for using a motor vehicle with the greatest possible safety
    64.
    发明专利
    Method for using a motor vehicle with the greatest possible safety 未知

    公开(公告)号：FR2649787A1

    公开(公告)日：1991-01-18

    申请号：FR9008158

    申请日：1990-06-28

    Applicant: BOSCH GMBH ROBERT

    Inventor： BARTKE RALF-MICHAEL ,  STUMPP GERHARD ,  SEHER DIETER ,  KULL HERMANN

    IPC: B60K28/00 ,  G01D18/00 ,  G01P21/02

    Abstract: Method, characterised in that, for sensors which supply a basic signal s.1.2 when the parameter (quantity, magnitude) which they measure takes a basic value, the basic signal being identical to the signal of a malfunctioning sensor s.1.1, the procedure is as follows: - as soon as the sensor emits the basic signal s.1.2, a first replacement/back-up function is started; - then, only after this use, an assessment is made as to whether the sensor can operate reliably. The invention applies to the method for using a motor vehicle with the greatest possible safety.

    66.
    发明专利
    未知

    公开(公告)号：FR2618849A1

    公开(公告)日：1989-02-03

    申请号：FR8806937

    申请日：1988-05-25

    Applicant: BOSCH GMBH ROBERT

    Inventor： SCHMITT ALFRED ,  STUMPP GERHARD ,  TRACHTE DIETRICH ,  WESSEL WOLF

    IPC: F02D1/12 ,  F02D17/00 ,  F02D17/04 ,  F02D1/02 ,  F02D41/22 ,  F02M63/02

    Abstract: A fuel injection pump for internal combustion engines having a hydraulic control mechanism includes a control cylinder with a control piston actuating a control member, a hydraulic work chamber and one switching valve each for an input and an output controlled by a valve control unit. The inflow to and return from the work chamber is provided with the control valves in order to shut down the engine upon a shutoff or a malfunction in the hydraulic control mechanism. The fuel feed pump is electrically driven, and the hydraulic work chamber communicates with the fuel tank via a relief device. The supply of current to the valve control unit and the feed pump is switched on and off, along with the rest of the current supply to the engine, via a driving switch. Additionally, the valve control unit is embodied such that upon the appearance of a persistent control deviation of the control member, the valve control unit shuts off the feed pump. The relief device includes various variant embodiments operative upon shutoff of the current supply or the occurrence of a malfunction and enables the restoration of the control mechanism to its zero or stopping position.

    67.
    发明专利
    未知

    公开(公告)号：DE3644147A1

    公开(公告)日：1988-07-07

    申请号：DE3644147

    申请日：1986-12-23

    Applicant: BOSCH GMBH ROBERT

    Inventor： FEHLMANN WOLFGANG ,  HOEFER GERALD ,  JUNGER DIETER ,  STUMPP GERHARD

    IPC: F02M41/12 ,  F02M45/12 ,  F02M41/00

    Abstract: A fuel injection pump of the distributor type in which to attain low injection rates in the idling range, longitudinal slits or longitudinal conduits are provided in the jacket face of the pump piston in accordance with the number of supply strokes of the pump piston. The slits or conduits are in continuous communication with an annular groove and the adjoining annular slide which is the quantity adjusting device of the fuel injection pump. The slits on conduits come in turn into communication with a control opening during the supply stroke of the pump piston via which opening the pump work chamber can be relieved whenever in the course of the pump piston stroke movement a second outlet opening of a relief conduit extending in the pump piston and communicating with the pump work chamber, comes into communication with the annular groove. From this point on, in order to attain quiet idling of the engine, the supply rate of the pump piston is reduced by the outflow rate, determined by a throttle of the pumped fuel into the suction chamber. By rotating the annular slide relative to the pump piston, the control opening can be moved out of the operating range of the longitudinal conduits and the quiet-idle device is shut off.

    68.
    发明专利
    未知

    公开(公告)号：FR2539815B1

    公开(公告)日：1986-05-16

    申请号：FR8318423

    申请日：1983-11-18

    Applicant: BOSCH GMBH ROBERT

    Inventor： KULL HERMANN ,  WESSEL WOLF ,  STUMPP GERHARD

    IPC: F02B3/06 ,  F02D17/04 ,  F02D41/22 ,  F02D35/00 ,  F02D41/40 ,  F02D45/00 ,  F02B77/08 ,  G05B11/00

    Abstract: The invention is directed to a safety arrangement for an internal combustion engine with self-ignition such as a diesel engine or the like wherein the operational signals of throttle position, rack travel and rotational speed are continuously monitored and compared with upper and lower limit values for these signals. From this comparison, comparison signals are generated and are combined with each other to provide an overall monitoring of the operation of the diesel engine so that the latter can be shut off when impermissible ranges of operation are present or, if conditions permit, the engine can be switched to an emergency mode of operation so that the motor vehicle may be driven to the next service station for repair.

    69.
    发明专利
    未知

    公开(公告)号：DE3301743A1

    公开(公告)日：1984-07-26

    申请号：DE3301743

    申请日：1983-01-20

    Applicant: BOSCH GMBH ROBERT

    Inventor： KULL HERMANN DR ,  WESSEL WOLF ,  STUMPP GERHARD

    IPC: F02D41/22 ,  F02B3/06 ,  F02D17/04 ,  F02D35/00 ,  F02D41/40 ,  F02D45/00 ,  F02B77/08 ,  F02D5/00 ,  G05B23/02

    Abstract: The invention is directed to a safety arrangement for an internal combustion engine with self-ignition such as a diesel engine or the like wherein the operational signals of throttle position, rack travel and rotational speed are continuously monitored and compared with upper and lower limit values for these signals. From this comparison, comparison signals are generated and are combined with each other to provide an overall monitoring of the operation of the diesel engine so that the latter can be shut off when impermissible ranges of operation are present or, if conditions permit, the engine can be switched to an emergency mode of operation so that the motor vehicle may be driven to the next service station for repair.

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